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rewrite AC_DEFINE

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This commit is contained in:
David MacKenzie 1994-08-24 06:41:01 +00:00
parent 4ec739aeee
commit f7371685eb
18 changed files with 488 additions and 713 deletions
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16
Makefile.in
View File

@ -57,8 +57,7 @@ DISTFILES = COPYING ChangeLog ChangeLog.1 ChangeLog.0 INSTALL \
acconfig.h acfunctions acgeneral.m4 acheaders acidentifiers \
acmakevars acoldnames.m4 acprograms acspecific.m4 autoconf.info* \
autoconf.m4 autoconf.sh autoconf.texi install.texi \
autoheader.sh autoreconf.sh autoscan.pl autoupdate.sh \
shindent.sh ifnames.sh \
autoheader.sh autoreconf.sh autoscan.pl autoupdate.sh ifnames.sh \
config.guess config.sub configure configure.in \
install.sh mkinstalldirs texinfo.tex \
testsuite/Makefile.in testsuite/config/*.exp \
@ -86,10 +85,6 @@ autoupdate: autoupdate.sh
rm -f $@ $@.tmp
$(editsh) $(srcdir)/autoupdate.sh > $@.tmp && mv $@.tmp $@ && chmod +x $@
shindent: shindent.sh
rm -f $@ $@.tmp
$(editsh) $(srcdir)/shindent.sh > $@.tmp && mv $@.tmp $@ && chmod +x $@
ifnames: ifnames.sh
rm -f $@ $@.tmp
$(editsh) $(srcdir)/ifnames.sh > $@.tmp && mv $@.tmp $@ && chmod +x $@
@ -141,9 +136,6 @@ install: all acgeneral.m4 acoldnames.m4 acspecific.m4 acconfig.h \
$(INSTALL_DATA) $(srcdir)/acconfig.h $(acdatadir)/acconfig.h
-if test -f autoscan; then \
$(INSTALL_PROGRAM) autoscan $(bindir)/autoscan; \
else :; fi
-if test -f shindent; then \
$(INSTALL_PROGRAM) shindent $(bindir)/shindent; \
$(INSTALL_DATA) $(srcdir)/acfunctions $(acdatadir)/acfunctions; \
$(INSTALL_DATA) $(srcdir)/acheaders $(acdatadir)/acheaders; \
$(INSTALL_DATA) $(srcdir)/acidentifiers $(acdatadir)/acidentifiers; \
@ -163,8 +155,7 @@ install-info: info installdirs
uninstall:
rm -f $(bindir)/autoconf $(bindir)/autoheader $(bindir)/autoscan
rm -f $(bindir)/autoreconf $(bindir)/autoupdate
rm -f $(bindir)/shindent $(bindir)/ifnames
rm -f $(bindir)/autoreconf $(bindir)/autoupdate $(bindir)/ifnames
rm -fr $(acdatadir)
cd $(infodir); rm -f autoconf.info*
if test -f standards.info || test -f $(srcdir)/standards.info; \
@ -188,8 +179,7 @@ clean mostlyclean distclean realclean::
done
clean mostlyclean distclean realclean::
rm -f autoconf autoheader autoscan autoreconf autoupdate
rm -f shindent ifnames *.tmp
rm -f autoconf autoheader autoscan autoreconf autoupdate ifnames *.tmp
rm -f *.aux *.cp *.cps *.dvi *.fn *.fns *.ky *.kys *.log
rm -f *.pg *.pgs *.toc *.tp *.tps *.vr *.vrs *.ma *.mas

3
NEWS
View File

@ -37,6 +37,7 @@ Major changes in release 2.0:
* AC_OUTPUT and AC_CONFIG_HEADER allow you to override the input-file names.
* AC_PROG_INSTALL looks for install.sh in the directory specified by
AC_CONFIG_AUXDIR, or srcdir or srcdir/.. or srcdir/../.. by default.
* AC_DEFINE and AC_DEFINE_UNQUOTED are more robust and smaller.
* AC_DEFINE no longer prints anything, because of the new result reporting
mechanism (AC_MSG_CHECKING and AC_MSG_RESULT).
* AC_VERBOSE pays attention to --quiet/--silent, not --verbose.
@ -51,8 +52,6 @@ Major changes in release 2.0:
* autoreconf to recursively remake configure and configuration header
files in a source tree.
* autoupdate to update a configure.in to use the new macro names.
* shindent to produce consistent indentation in shell scripts, such as
configure.
* ifnames to list the symbols used in #if and #ifdef directives in a
source tree.

4
README
View File

@ -14,8 +14,8 @@ Autoconf, so that Autoconf's configure script can find it. The
configuration scripts produced by Autoconf are self-contained, so
their users do not need to have Autoconf (or GNU m4).
Also, some optional utilities that come with Autoconf use Perl, Bash,
TCL, and the TCL packages Expect and DejaGNU. However, none of those
Also, some optional utilities that come with Autoconf use Perl, TCL,
and the TCL packages Expect and DejaGNU. However, none of those
are required in order to use the main Autoconf program. If they are
not present, the affected Autoconf utilities will not be installed.

7
TODO
View File

@ -10,7 +10,7 @@ Required for 2.0:
------------------------------------------------------------------------------
* Fix up quoting for AC_DEFINE; understand and integrate Jim Avera's patches.
* Split up AC_SUBST substitutions using a loop to accomodate old seds.
------------------------------------------------------------------------------
@ -21,6 +21,7 @@ Required for 2.0:
* Fix AC_ARG_{ENABLE,WITH}, and AC_REQUIRE interrupting messages.
------------------------------------------------------------------------------
Other things:
@ -38,10 +39,6 @@ functions (POSIX, NIS) that do everything necessary, instead.
------------------------------------------------------------------------------
* Add a --indent option to autoconf to call shindent.
------------------------------------------------------------------------------
* Doc: Add indexes of concepts, env vars.
------------------------------------------------------------------------------

428
acgeneral.m4
View File

@ -35,7 +35,7 @@ Install it before installing Autoconf or set the
M4 environment variable to its path name.
)m4exit(2)])dnl
dnl
define(AC_ACVERSION, 1.100)dnl
define(AC_ACVERSION, 1.101)dnl
dnl This is defined by the --version option of the autoconf script.
ifdef([AC_PRINT_VERSION], [Autoconf version AC_ACVERSION
m4exit(0)])dnl
@ -53,12 +53,12 @@ divert(AC_DIVERSION_NORMAL)dnl
dnl
dnl Define a macro which automatically provides itself.
dnl Use instead of define for macros to be used as functions.
dnl
dnl AC_DEFUN(NAME, EXPANSION)
define([AC_DEFUN],
[define($1,
[define([AC_PROVIDE_$1], )][$2])])dnl
dnl
dnl AC_INIT_NOTICE()
AC_DEFUN(AC_INIT_NOTICE,
[# Guess values for system-dependent variables and create Makefiles.
# Generated automatically using autoconf version] AC_ACVERSION [
@ -79,6 +79,7 @@ AC_DEFUN(AC_INIT_NOTICE,
# Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
])dnl
dnl
dnl AC_INIT_PARSE_ARGS()
AC_DEFUN(AC_INIT_PARSE_ARGS,
[AC_BEFORE([$0], [AC_ARG_ENABLE])dnl
AC_BEFORE([$0], [AC_ARG_WITH])dnl
@ -361,12 +362,13 @@ if test -n "$ac_prev"; then
fi
])dnl
dnl
dnl Try to have only one #! line, just so it doesn't look funny.
dnl
dnl Try to have only one #! line, so the script doesn't look funny.
dnl AC_BINSH()
AC_DEFUN(AC_BINSH,
[#!/bin/sh
])dnl
dnl
dnl AC_INIT(UNIQUE-FILE-IN-SOURCE-DIR)
AC_DEFUN(AC_INIT,
[AC_REQUIRE([AC_BINSH])dnl
AC_INIT_NOTICE
@ -472,6 +474,11 @@ AC_CACHE_LOAD
AC_LANG_C
undivert(AC_DIVERSION_ARG)dnl
dnl Substitute for predefined variables.
AC_SUBST(LIBS)dnl
AC_SUBST(prefix)dnl
AC_SUBST(exec_prefix)dnl
AC_SUBST(DEFS)dnl
])dnl
dnl
dnl AC_ARG_ENABLE(FEATURE, HELP-STRING, ACTION-IF-TRUE [, ACTION-IF-FALSE])
@ -537,30 +544,33 @@ AC_DEFUN(AC_REVISION,
dnl
dnl Subroutines of AC_PREREQ.
dnl
dnl Change the dots in version number $1 into commas.
dnl Change the dots in NUMBER into commas.
dnl AC_PREREQ_SPLIT(NUMBER)
AC_DEFUN(AC_PREREQ_SPLIT,
[translit($1, ., [, ])])dnl
dnl
dnl Default the ternary version number to 0 (e.g., 1, 7 -> 1, 7, 0).
dnl AC_PREREQ_CANON(MAJOR, MINOR [,TERNARY])
AC_DEFUN(AC_PREREQ_CANON,
[$1, $2, ifelse([$3], , 0, [$3])])dnl
dnl
dnl Complain and exit if the version number in $1 through $3 is less than
dnl the version number in $4 through $6.
dnl $7 is the printable version of the second version number.
dnl Complain and exit if version number 1 is less than version number 2.
dnl PRINTABLE2 is the printable version of version number 2.
dnl AC_PREREQ_COMPARE(MAJOR1, MINOR1, TERNARY1, MAJOR2, MINOR2, TERNARY2,
dnl PRINTABLE2)
AC_DEFUN(AC_PREREQ_COMPARE,
[ifelse(builtin([eval],
[$3 + $2 * 100 + $1 * 10000 < $6 + $5 * 100 + $4 * 10000]), 1,
[errprint(Autoconf version $7 or higher is required
)m4exit(3)])])dnl
dnl
dnl Complain and exit if the Autoconf version is less than $1.
dnl Complain and exit if the Autoconf version is less than VERSION.
dnl AC_PREREQ(VERSION)
AC_DEFUN(AC_PREREQ,
[AC_PREREQ_COMPARE(AC_PREREQ_CANON(AC_PREREQ_SPLIT(AC_ACVERSION)),
AC_PREREQ_CANON(AC_PREREQ_SPLIT([$1])), [$1])])dnl
dnl
dnl Run configure in subdirectories $1.
dnl Run configure in subdirectories DIR...
dnl Not actually done until AC_OUTPUT_SUBDIRS.
dnl AC_CONFIG_SUBDIRS(DIR ...)
AC_DEFUN(AC_CONFIG_SUBDIRS,
@ -586,7 +596,7 @@ changequote(<<, >>)dnl
changequote([, ])dnl
fi
fi
undefine(AC_VAR_NAME)dnl
undefine([AC_VAR_NAME])dnl
])dnl
AC_DEFUN(AC_PREFIX,
[AC_OBSOLETE([$0], [; instead use AC_PREFIX_PROGRAM before AC_INIT])dnl
@ -597,8 +607,8 @@ dnl ### Canonicalizing the system type
dnl
dnl
dnl Find install.sh, config.sub, config.guess, and Cygnus configure
dnl in directory $1. These are auxiliary files used in configuration.
dnl $1 can be either absolute or relative to ${srcdir}.
dnl in directory DIR. These are auxiliary files used in configuration.
dnl DIR can be either absolute or relative to ${srcdir}.
dnl AC_CONFIG_AUX_DIR(DIR)
AC_DEFUN(AC_CONFIG_AUX_DIR,
[AC_CONFIG_AUX_DIRS($1 ${srcdir}/$1)])dnl
@ -738,8 +748,8 @@ AC_SUBST(build_vendor)dnl
AC_SUBST(build_os)dnl
])dnl
dnl
dnl Link each of the existing files in $2 to the corresponding
dnl link name in $1.
dnl Link each of the existing files FILE... to the corresponding
dnl link name in LINK...
dnl Not actually done until AC_OUTPUT_LINKS.
dnl AC_LINK_FILES(LINK ..., FILE ...)
AC_DEFUN(AC_LINK_FILES,
@ -750,6 +760,7 @@ dnl ### Caching test results
dnl
dnl
dnl Look for site or system specific initialization scripts.
dnl AC_SITE_LOAD()
AC_DEFUN(AC_SITE_LOAD,
[# Prefer explicitly selected file to automatically selected ones.
if test ! -r "$CONFIG_SITE"; then
@ -771,6 +782,7 @@ for ac_site_file in $CONFIG_SITE; do
done
])dnl
dnl
dnl AC_CACHE_LOAD()
AC_DEFUN(AC_CACHE_LOAD,
[if test -r "$cache_file"; then
echo "loading cache $cache_file"
@ -781,10 +793,11 @@ else
fi
])dnl
dnl
dnl AC_CACHE_SAVE()
AC_DEFUN(AC_CACHE_SAVE,
[if test -w $cache_file; then
echo "updating cache $cache_file"
cat > $cache_file <<\CEOF
cat > $cache_file <<\EOF
# This file is a shell script that caches the results of configure
# tests run on this system so they can be shared between configure
# scripts and configure runs. It is not useful on other systems.
@ -798,7 +811,7 @@ cat > $cache_file <<\CEOF
# Giving --cache-file=/dev/null disables caching, for debugging configure.
# config.status only pays attention to the cache file if you give it the
# --recheck option to rerun configure.
CEOF
EOF
changequote(, )dnl
dnl Allow a site initialization script to override cache values.
# Ultrix sh set writes to stderr and can't be redirected directly.
@ -809,8 +822,8 @@ echo "not updating unwritable cache $cache_file"
fi
])dnl
dnl
dnl AC_CACHE_VAL(CACHE-ID, COMMANDS-TO-SET-IT)
dnl The name of shell var CACHE-ID must contain `_cv_' in order to get saved.
dnl AC_CACHE_VAL(CACHE-ID, COMMANDS-TO-SET-IT)
AC_DEFUN(AC_CACHE_VAL,
[AC_REQUIRE([AC_PROG_ECHO_N])dnl
dnl We used to use the below line, but it fails if the 1st arg is a
@ -827,95 +840,22 @@ dnl
dnl ### Setting variables
dnl
dnl
dnl Several simple subroutines to do various flavors of quoting.
dnl
dnl Quote $1 against shell "s.
AC_DEFUN(AC_QUOTE_DQUOTE,
[dnl We use \1 instead of \& to avoid an m4 1.0.3 bug.
patsubst($1, changequote(, )\([$"`\\]\)changequote([, ]), \\\1)])dnl
dnl
dnl Quote $1 against shell 's.
AC_DEFUN(AC_QUOTE_SQUOTE,
[patsubst($1, ', '\\'')])dnl
dnl
dnl Quote $1 against shell here documents (<<EOF).
AC_DEFUN(AC_QUOTE_HERE,
[changequote({, })dnl
dnl We use \1 instead of \& to avoid an m4 1.0.3 bug.
patsubst(patsubst($1, \(\\[$`\\]\), \\\1), \([$`]\), \\\1){}dnl
changequote([, ])])dnl
dnl
dnl Quote $1 against the right hand side of a sed substitution.
AC_DEFUN(AC_QUOTE_SED,
[changequote({, })dnl
dnl We use \1 instead of \& to avoid an m4 1.0.3 bug.
dnl % and @ and ! are commonly used as the sed s separator character.
patsubst($1, \([&\\%@!]\), \\\1){}dnl
changequote([, ])])dnl
dnl
dnl Quote $1 against tokenization.
AC_DEFUN(AC_QUOTE_TOKEN,
[changequote({, })dnl
patsubst($1, \([ ]\), \\\1){}dnl
changequote([, ])])dnl
dnl
dnl Subroutines of AC_DEFINE. Does more quoting magic than any sane person
dnl should be able to understand. The point of it all is that what goes into
dnl Makefile et al should be verbatim what was written in configure.in.
AC_DEFUN(AC_DEFINE_QUOTE,
[AC_QUOTE_TOKEN(AC_QUOTE_SQUOTE(AC_QUOTE_DQUOTE($1)))])dnl
dnl
AC_DEFUN(AC_DEFINE_SEDQUOTE,
[AC_QUOTE_DQUOTE(AC_QUOTE_HERE(AC_QUOTE_HERE(AC_QUOTE_SED($1))))])dnl
dnl
dnl Don't compare $2 to a blank, so we can support "-Dfoo=".
dnl If creating a configuration header file, we add
dnl commands to ac_sed_defs to define the variable. ac_[due][ABCD]
dnl get defined in config.status. Here we just insert the
dnl variable parts of the string: the variable name to define
dnl and the value to give it.
dnl The newlines around the curly braces prevent sh syntax errors.
dnl Set VARIABLE to VALUE, verbatim, or 1.
dnl AC_DEFINE(VARIABLE [, VALUE])
AC_DEFUN(AC_DEFINE,
[
{
dnl Uniformly use AC_DEFINE_[SED]QUOTE, so callers of AC_DEFINE_UNQUOTED
dnl can use AC_QUOTE_* manually if they want to.
ifelse($#, 2,
[define([AC_VAL], $2)dnl],
[define([AC_VAL], 1)dnl])
dnl
echo "[#][define]" $1 "AC_QUOTE_SQUOTE(AC_VAL)" >> confdefs.h
dnl Define DEFS even if AC_LIST_HEADERS for use in user case statements.
DEFS="$DEFS -D$1=AC_QUOTE_SQUOTE(AC_VAL)"
ifdef([AC_LIST_HEADERS],
ac_sed_defs="dnl
${ac_sed_defs}\${ac_dA}$1\${ac_dB}$1\${ac_dC}AC_DEFINE_SEDQUOTE(AC_VAL)\${ac_dD}
\${ac_uA}$1\${ac_uB}$1\${ac_uC}AC_DEFINE_SEDQUOTE(AC_VAL)\${ac_uD}
\${ac_eA}$1\${ac_eB}$1\${ac_eC}AC_DEFINE_SEDQUOTE(AC_VAL)\${ac_eD}
"
)dnl
}
[cat >> confdefs.h <<\EOF
[#define] $1 ifelse($#, 2, [$2], 1)
EOF
])dnl
dnl
dnl Unsafe version of AC_DEFINE.
dnl Users are responsible for the quoting nightmare.
dnl Well, not all of it. We need to pull the identity function out to
dnl the top level, because m4 doesn't really support nested functions;
dnl it doesn't distinguish between the arguments to the outer
dnl function, which should be expanded, and the arguments to the inner
dnl function, which shouldn't yet.
AC_DEFUN(AC_QUOTE_IDENTITY,
$1)dnl
dnl Similar, but perform shell substitutions $ ` \ once on VALUE.
AC_DEFUN(AC_DEFINE_UNQUOTED,
[pushdef([AC_QUOTE_SQUOTE], defn([AC_QUOTE_IDENTITY]))dnl
pushdef([AC_DEFINE_SEDQUOTE], defn([AC_QUOTE_IDENTITY]))dnl
AC_DEFINE($1, $2)dnl
popdef([AC_DEFINE_SEDQUOTE])dnl
popdef([AC_QUOTE_SQUOTE])dnl
[cat >> confdefs.h <<EOF
[#define] $1 ifelse($#, 2, [$2], 1)
EOF
])dnl
dnl
dnl This macro protects the argument from being diverted twice
dnl This macro protects VARIABLE from being diverted twice
dnl if this macro is called twice for it.
dnl AC_SUBST(VARIABLE)
AC_DEFUN(AC_SUBST,
@ -936,6 +876,7 @@ elif test -f ${srcdir}/$2; then
AC_INSERT_FILE($1, ${srcdir}/$2)
fi
])dnl
dnl Internal subroutine of AC_SUBST_FILE.
AC_DEFUN(AC_INSERT_FILE,
[ifdef([AC_SUBST_$1], ,
[define([AC_SUBST_$1], )dnl
@ -954,6 +895,7 @@ AC_DEFUN(AC_MSG_CHECKING,
[AC_REQUIRE([AC_PROG_ECHO_N])dnl
echo $ac_n "checking $1""... $ac_c" 1>&AC_FD_MSG])dnl
dnl
dnl AC_CHECKING(FEATURE-DESCRIPTION)
AC_DEFUN(AC_CHECKING,
[echo "checking $1" 1>&AC_FD_MSG])dnl
dnl
@ -962,6 +904,7 @@ AC_DEFUN(AC_MSG_RESULT,
[AC_REQUIRE([AC_PROG_ECHO_N])dnl
echo "$ac_t""$1" 1>&AC_FD_MSG])dnl
dnl
dnl AC_VERBOSE(RESULT-DESCRIPTION)
AC_DEFUN(AC_VERBOSE,
[AC_OBSOLETE([$0], [; instead use AC_MSG_RESULT])dnl
echo " $1" 1>&AC_FD_MSG])dnl
@ -978,6 +921,7 @@ dnl
dnl ### Selecting which language to use for testing
dnl
dnl
dnl AC_LANG_C()
AC_DEFUN(AC_LANG_C,
[define([AC_LANG], [C])dnl
ac_ext=c
@ -986,6 +930,7 @@ ac_cpp='${CPP}'
ac_compile='${CC-cc} $CFLAGS $LDFLAGS conftest.${ac_ext} -o conftest $LIBS 1>&AC_FD_CC 2>&AC_FD_CC'
])dnl
dnl
dnl AC_LANG_CPLUSPLUS()
AC_DEFUN(AC_LANG_CPLUSPLUS,
[define([AC_LANG], [CPLUSPLUS])dnl
ac_ext=C
@ -995,10 +940,13 @@ ac_compile='${CXX-gcc} $CXXFLAGS $LDFLAGS conftest.${ac_ext} -o conftest $LIBS 1
])dnl
dnl
dnl Push the current language on a stack.
dnl
dnl AC_LANG_SAVE()
AC_DEFUN(AC_LANG_SAVE,
[pushdef([AC_LANG_STACK], AC_LANG)])dnl
dnl
dnl Restore the current language from the stack.
dnl AC_LANG_RESTORE()
AC_DEFUN(AC_LANG_RESTORE,
[ifelse(AC_LANG_STACK, C, [ifelse(AC_LANG, C, , [AC_LANG_C])], [ifelse(AC_LANG, CPLUSPLUS, , [AC_LANG_CPLUSPLUS])])[]popdef([AC_LANG_STACK])])dnl
dnl
@ -1029,7 +977,7 @@ dnl ### Checking for files - fundamental (caching)
dnl
dnl
dnl AC_CHECK_PROG(VARIABLE, PROG-TO-CHECK-FOR, VALUE-IF-FOUND
dnl [, VALUE-IF-NOT-FOUND])
dnl [, VALUE-IF-NOT-FOUND])
AC_DEFUN(AC_CHECK_PROG,
[# Extract the first word of "$2", so it can be a program name with args.
set dummy $2; ac_word=[$]2
@ -1121,12 +1069,12 @@ ifelse([$3], , , [test -n "[$]$1" || $1="$3"
])])dnl
dnl
dnl AC_CHECK_LIB(LIBRARY, FUNCTION, [, ACTION-IF-FOUND [, ACTION-IF-NOT-FOUND
dnl [, OTHER-LIBRARIES]]])
dnl [, OTHER-LIBRARIES]]])
AC_DEFUN(AC_CHECK_LIB,
[changequote(/, /)dnl
define(/AC_LIB_NAME/, dnl
patsubst(patsubst($1, /lib\([^\.]*\)\.a/, /\1/), /-l/, //))dnl
define(/AC_CV_NAME/, ac_cv_lib_//AC_LIB_NAME)dnl
[changequote(<<, >>)dnl
define(<<AC_LIB_NAME>>, dnl
patsubst(patsubst($1, <<lib\([^\.]*\)\.a>>, <<\1>>), <<-l>>, <<>>))dnl
define(<<AC_CV_NAME>>, ac_cv_lib_<<>>AC_LIB_NAME)dnl
changequote([, ])dnl
AC_MSG_CHECKING([for -l[]AC_LIB_NAME])
AC_CACHE_VAL(AC_CV_NAME,
@ -1145,8 +1093,8 @@ ifelse([$4], , , [else
$4
])dnl
fi
undefine(AC_LIB_NAME)dnl
undefine(AC_CV_NAME)dnl
undefine([AC_LIB_NAME])dnl
undefine([AC_CV_NAME])dnl
])dnl
dnl
dnl AC_HAVE_LIBRARY(LIBRARY, [, ACTION-IF-FOUND [, ACTION-IF-NOT-FOUND
@ -1168,7 +1116,7 @@ dnl
dnl Because this macro is used by AC_PROG_GCC_TRADITIONAL, which must
dnl come early, it is not included in AC_BEFORE checks.
dnl AC_EGREP_CPP(PATTERN, PROGRAM, ACTION-IF-FOUND [,
dnl ACTION-IF-NOT-FOUND])
dnl ACTION-IF-NOT-FOUND])
AC_DEFUN(AC_EGREP_CPP,
[AC_REQUIRE_CPP()dnl
cat > conftest.${ac_ext} <<EOF
@ -1198,7 +1146,7 @@ AC_TRY_LINK([$2], [$3], [$4], [$5])dnl
])dnl
dnl
dnl AC_TRY_LINK(INCLUDES, FUNCTION-BODY,
dnl ACTION-IF-FOUND [, ACTION-IF-NOT-FOUND])
dnl ACTION-IF-FOUND [, ACTION-IF-NOT-FOUND])
AC_DEFUN(AC_TRY_LINK,
[dnl We use return because because C++ requires a prototype for exit.
cat > conftest.${ac_ext} <<EOF
@ -1221,7 +1169,7 @@ rm -f conftest*]
)dnl
dnl
dnl AC_TRY_RUN(PROGRAM, ACTION-IF-TRUE [, ACTION-IF-FALSE
dnl [, ACTION-IF-CROSS-COMPILING]])
dnl [, ACTION-IF-CROSS-COMPILING]])
AC_DEFUN(AC_TRY_RUN,
[AC_REQUIRE([AC_C_CROSS])dnl
if test "$cross_compiling" = yes; then
@ -1320,7 +1268,7 @@ AC_CHECK_FUNC(${ac_func},
[changequote(, )dnl
ac_tr_func=HAVE_`echo $ac_func | tr '[a-z]' '[A-Z]'`
changequote([, ])dnl
AC_DEFINE(${ac_tr_func}) $2])dnl
AC_DEFINE_UNQUOTED(${ac_tr_func}) $2])dnl
done
])dnl
dnl
@ -1333,7 +1281,7 @@ AC_CHECK_HEADER(${ac_hdr},
[changequote(, )dnl
ac_tr_hdr=HAVE_`echo $ac_hdr | tr '[a-z]./' '[A-Z]__'`
changequote([, ])dnl
AC_DEFINE(${ac_tr_hdr}) $2])dnl
AC_DEFINE_UNQUOTED(${ac_tr_hdr}) $2])dnl
done
])dnl
dnl
@ -1366,8 +1314,8 @@ main()
}], AC_CV_NAME=`cat conftestval`)])dnl
AC_MSG_RESULT($AC_CV_NAME)
AC_DEFINE_UNQUOTED(AC_TYPE_NAME, $AC_CV_NAME)
undefine(AC_TYPE_NAME)dnl
undefine(AC_CV_NAME)dnl
undefine([AC_TYPE_NAME])dnl
undefine([AC_CV_NAME])dnl
])dnl
dnl
dnl AC_CHECK_TYPE(TYPE, DEFAULT)
@ -1397,36 +1345,19 @@ test "x$exec_prefix" = xNONE && exec_prefix='${prefix}'
# Any assignment to VPATH causes Sun make to only execute
# the first set of double-colon rules, so remove it if not needed.
# If there is a colon in the path, we need to keep it.
changequote(, )dnl
if test "x$srcdir" = x.; then
changequote(, )dnl
ac_vpsub='/^[ ]*VPATH[ ]*=[^:]*$/d'
changequote([, ])dnl
fi
# Quote sed substitution magic chars in DEFS.
cat >conftest.def <<EOF
$DEFS
EOF
ac_escape_ampersand_and_backslash='s%[&\\]%\\&%g'
DEFS=`sed "$ac_escape_ampersand_and_backslash" <conftest.def`
rm -f conftest.def
# Substitute for predefined variables.
changequote([, ])dnl
AC_SUBST(LIBS)dnl
AC_SUBST(prefix)dnl
AC_SUBST(exec_prefix)dnl
dnl Substituting for DEFS would confuse sed if it contains multiple lines.
ifdef([AC_LIST_HEADERS],
[divert(AC_DIVERSION_SED)dnl
s%@DEFS@%-DHAVE_CONFIG_H%],
[divert(AC_DIVERSION_SED)dnl
s%@DEFS@%$DEFS%
])dnl
divert(AC_DIVERSION_NORMAL)dnl
trap 'rm -f $CONFIG_STATUS conftest*; exit 1' 1 2 15
ifdef([AC_LIST_HEADERS], [DEFS=-DHAVE_CONFIG_H], [AC_OUTPUT_MAKE_DEFS()])
# Without the "./", some shells look in PATH for config.status.
: ${CONFIG_STATUS=./config.status}
trap "rm -f ${CONFIG_STATUS}; exit 1" 1 2 15
echo creating ${CONFIG_STATUS}
rm -f ${CONFIG_STATUS}
cat > ${CONFIG_STATUS} <<EOF
@ -1461,14 +1392,12 @@ do
esac
done
ac_given_srcdir=$srcdir
ifdef([AC_LIST_HEADERS],
[trap 'rm -fr $1 AC_LIST_HEADERS conftest*; exit 1' 1 2 15],
[trap 'rm -f $1; exit 1' 1 2 15])
ac_given_srcdir=$srcdir
EOF
cat >> ${CONFIG_STATUS} <<\EOF
AC_OUTPUT_FILES($1)
ifdef([AC_LIST_HEADERS], [AC_OUTPUT_HEADER(AC_LIST_HEADERS)])dnl
ifdef([AC_LIST_LINKS], [AC_OUTPUT_LINKS(AC_LIST_LINKS, AC_LIST_FILES)])dnl
@ -1477,14 +1406,49 @@ exit 0
EOF
chmod +x ${CONFIG_STATUS}
test "$no_create" = yes || ${CONFIG_SHELL-/bin/sh} ${CONFIG_STATUS}
dnl config.status should never do recursion.
dnl config.status should not do recursion.
ifdef([AC_LIST_SUBDIRS], [AC_OUTPUT_SUBDIRS(AC_LIST_SUBDIRS)])dnl
])dnl
dnl
dnl This is a subroutine of AC_OUTPUT. It is called inside a quoted
dnl This is a subroutine of AC_OUTPUT.
dnl AC_OUTPUT_MAKE_DEFS()
AC_DEFUN(AC_OUTPUT_MAKE_DEFS,
[# Transform confdefs.h into DEFS.
dnl Using a here document instead of a string reduces the quoting nightmare.
cat > conftest.defs <<\EOF
changequote(<<, >>)dnl
s%<<#define>> \([A-Za-z_][A-Za-z0-9_]*\) \(.*\)%-D\1=\2%g
# Protect against shell expansion while executing Makefile rules.
s%[ `~<<#>>$^&*(){}\\|;'"<>?]%\\&%g
s%\[%\\&%g
s%\]%\\&%g
# Protect against Makefile macro expansion.
s%\$%$$%g
# Protect against being on the right side of a sed subst in config.status.
s/[\\&%]/\\&/g
changequote([, ])dnl
EOF
DEFS=`sed -f conftest.defs confdefs.h | tr '\012' ' '`
rm -f conftest.defs
])dnl
dnl
dnl This is a subroutine of AC_OUTPUT. It is called inside an unquoted
dnl here document whose contents are going into config.status.
dnl AC_OUTPUT_FILES(FILE...)
AC_DEFUN(AC_OUTPUT_FILES,
[CONFIG_FILES=${CONFIG_FILES-"$1"}
[cat > conftest.subs <<\CEOF
dnl These here document variables are unquoted when configure runs
dnl but quoted when config.status runs, so variables are expanded once.
$ac_vpsub
dnl Shell code in configure.in might set extrasub.
$extrasub
dnl Insert the sed substitutions of variables.
undivert(AC_DIVERSION_SED)
CEOF
EOF
cat >> ${CONFIG_STATUS} <<\EOF
CONFIG_FILES=${CONFIG_FILES-"$1"}
for ac_file in .. ${CONFIG_FILES}; do if test "x$ac_file" != x..; then
# Support "outfile[:infile]", defaulting infile="outfile.in".
case "$ac_file" in
@ -1551,99 +1515,40 @@ a\\
}
" ;;
esac
sed -e "
$ac_comsub
EOF
cat >> ${CONFIG_STATUS} <<EOF
$ac_vpsub
dnl Shell code in configure.in might set extrasub.
$extrasub
dnl Insert the sed substitutions of variables.
undivert(AC_DIVERSION_SED)
s%@srcdir@%\$srcdir%g
s%@top_srcdir@%\$top_srcdir%g
ifdef([AC_PROVIDE_AC_PROG_INSTALL], [s%@INSTALL@%\$INSTALL%g
sed -e "$ac_comsub
s%@srcdir@%$srcdir%g
s%@top_srcdir@%$top_srcdir%g
ifdef([AC_PROVIDE_AC_PROG_INSTALL], [s%@INSTALL@%$INSTALL%g
])dnl
EOF
cat >> ${CONFIG_STATUS} <<\EOF
" $ac_given_srcdir/$ac_file_in > $ac_file
" -f conftest.subs $ac_given_srcdir/$ac_file_in > $ac_file
fi; done
rm -f conftest.subs
])dnl
dnl
dnl Create the header files listed in $1.
dnl This is a subroutine of AC_OUTPUT. It is called inside a quoted
dnl here document whose contents are going into config.status.
dnl AC_OUTPUT_HEADER(HEADER-FILE...)
AC_DEFUN(AC_OUTPUT_HEADER,
[changequote(<<, >>)dnl
# These sed commands are put into ac_sed_defs when defining a macro.
# They are broken into pieces to make the sed script easier to manage.
# They are passed to sed as "A NAME B NAME C VALUE D", where NAME
# is the cpp macro being defined and VALUE is the value it is being given.
# Each defining turns into a single global substitution command.
# Hopefully no one uses "!" as a variable value.
# Other candidates for the sed separators, like , and @, do get used.
# These sed commands are passed to sed as "A NAME B NAME C VALUE D", where
# NAME is the cpp macro being defined and VALUE is the value it is being given.
#
# ac_d sets the value in "#define NAME VALUE" lines.
ac_dA='s!^\([ ]*\)#\([ ]*define[ ][ ]*\)'
ac_dB='\([ ][ ]*\)[^ ]*!\1#\2'
ac_dA='s%^\([ ]*\)#\([ ]*define[ ][ ]*\)'
ac_dB='\([ ][ ]*\)[^ ]*%\1#\2'
ac_dC='\3'
ac_dD='!g'
ac_dD='%g'
# ac_u turns "#undef NAME" with trailing blanks into "#define NAME VALUE".
ac_uA='s!^\([ ]*\)#\([ ]*\)undef\([ ][ ]*\)'
ac_uB='\([ ]\)!\1#\2define\3'
ac_uA='s%^\([ ]*\)#\([ ]*\)undef\([ ][ ]*\)'
ac_uB='\([ ]\)%\1#\2define\3'
ac_uC=' '
ac_uD='\4!g'
ac_uD='\4%g'
# ac_e turns "#undef NAME" without trailing blanks into "#define NAME VALUE".
ac_eA='s!^\([ ]*\)#\([ ]*\)undef\([ ][ ]*\)'
ac_eB='<<$>>!\1#\2define\3'
ac_eA='s%^\([ ]*\)#\([ ]*\)undef\([ ][ ]*\)'
ac_eB='<<$>>%\1#\2define\3'
ac_eC=' '
ac_eD='!g'
ac_eD='%g'
changequote([, ])dnl
rm -f conftest.sed
EOF
# Turn off quoting long enough to insert the sed commands.
rm -f conftest.sh
cat > conftest.sh <<EOF
$ac_sed_defs
EOF
# Break up $ac_sed_defs (now in conftest.sh) because some shells have a limit
# on the size of here documents.
# Maximum number of lines to put in a single here document.
ac_max_sh_lines=9
while :
do
# wc gives bogus results for an empty file on some AIX systems.
ac_lines=`grep -c . conftest.sh`
if test -z "$ac_lines" || test "$ac_lines" -eq 0; then break; fi
rm -f conftest.s1 conftest.s2
sed ${ac_max_sh_lines}q conftest.sh > conftest.s1 # Like head -9.
sed 1,${ac_max_sh_lines}d conftest.sh > conftest.s2 # Like tail +10.
# Write a limited-size here document to append to conftest.sed.
echo 'cat >> conftest.sed <<CONFEOF' >> ${CONFIG_STATUS}
cat conftest.s1 >> ${CONFIG_STATUS}
echo 'CONFEOF' >> ${CONFIG_STATUS}
rm -f conftest.s1 conftest.sh
mv conftest.s2 conftest.sh
done
rm -f conftest.sh
# Now back to your regularly scheduled config.status.
cat >> ${CONFIG_STATUS} <<\EOF
# This sed command replaces #undef with comments. This is necessary, for
# example, in the case of _POSIX_SOURCE, which is predefined and required
# on some systems where configure will not decide to define it in
[#] $1.
cat >> conftest.sed <<\CONFEOF
changequote(, )dnl
s,^[ ]*#[ ]*undef[ ][ ]*[a-zA-Z_][a-zA-Z_0-9]*,/* & */,
changequote([, ])dnl
CONFEOF
rm -f conftest.h
# Break up the sed commands because old seds have small limits.
ac_max_sed_lines=20
CONFIG_HEADERS=${CONFIG_HEADERS-"$1"}
for ac_file in .. ${CONFIG_HEADERS}; do if test "x$ac_file" != x..; then
@ -1656,26 +1561,68 @@ for ac_file in .. ${CONFIG_HEADERS}; do if test "x$ac_file" != x..; then
echo creating $ac_file
cp $ac_given_srcdir/$ac_file_in conftest.h1
cp conftest.sed conftest.stm
while :
do
ac_lines=`grep -c . conftest.stm`
if test -z "$ac_lines" || test "$ac_lines" -eq 0; then break; fi
rm -f conftest.s1 conftest.s2 conftest.h2
sed ${ac_max_sed_lines}q conftest.stm > conftest.s1 # Like head -20.
sed 1,${ac_max_sed_lines}d conftest.stm > conftest.s2 # Like tail +21.
sed -f conftest.s1 < conftest.h1 > conftest.h2
rm -f conftest.s1 conftest.h1 conftest.stm
mv conftest.h2 conftest.h1
mv conftest.s2 conftest.stm
done
rm -f conftest.stm conftest.h
rm -f conftest.frag conftest.in conftest.out
cp $ac_given_srcdir/$ac_file_in conftest.in
EOF
# Transform confdefs.h into a sed script conftest.vals that substitutes
# the proper values into config.h.in to produce config.h.
rm -f conftest.vals
dnl Using a here document instead of a string reduces the quoting nightmare.
cat > conftest.hdr <<\EOF
changequote(<<, >>)dnl
# Protect against being on the right side of a sed subst in config.status.
s/[\\&%]/\\&/g
# Protect against being in an unquoted here document in config.status.
s%[\\$`]%\\&%g
s%<<#define>> \([A-Za-z_][A-Za-z0-9_]*\) \(.*\)%${ac_dA}\1${ac_dB}\1${ac_dC}\2${ac_dD}%gp
s%ac_d%ac_u%gp
s%ac_u%ac_e%gp
changequote([, ])dnl
EOF
sed -n -f conftest.hdr confdefs.h > conftest.vals
rm -f conftest.hdr
# This sed command replaces #undef with comments. This is necessary, for
# example, in the case of _POSIX_SOURCE, which is predefined and required
# on some systems where configure will not decide to define it.
cat >> conftest.vals <<\EOF
changequote(, )dnl
s%^[ ]*#[ ]*undef[ ][ ]*[a-zA-Z_][a-zA-Z_0-9]*%/* & */%
changequote([, ])dnl
EOF
# Break up conftest.vals because some shells have a limit on
# the size of here documents, and old seds have small limits too.
# Maximum number of lines to put in a single here document.
ac_max_here_lines=12
rm -f conftest.tail
while :
do
ac_lines=`grep -c . conftest.vals`
# grep -c gives empty output for an empty file on some AIX systems.
if test -z "$ac_lines" || test "$ac_lines" -eq 0; then break; fi
# Write a limited-size here document to conftest.frag.
echo ' cat > conftest.frag <<CEOF' >> ${CONFIG_STATUS}
sed ${ac_max_here_lines}q conftest.vals >> ${CONFIG_STATUS}
echo 'CEOF
sed -f conftest.frag conftest.in > conftest.out
mv conftest.out conftest.in
' >> ${CONFIG_STATUS}
sed 1,${ac_max_here_lines}d conftest.vals > conftest.tail
mv conftest.tail conftest.vals
done
rm -f conftest.vals
# Now back to your regularly scheduled config.status.
cat >> ${CONFIG_STATUS} <<\EOF
rm -f conftest.frag conftest.h
echo "/* $ac_file. Generated automatically by configure. */" > conftest.h
cat conftest.h1 >> conftest.h
rm -f conftest.h1
cat conftest.in >> conftest.h
rm -f conftest.in
if cmp -s $ac_file conftest.h 2>/dev/null; then
# The file exists and we would not be changing it.
echo "$ac_file is unchanged"
rm -f conftest.h
else
@ -1683,10 +1630,10 @@ for ac_file in .. ${CONFIG_HEADERS}; do if test "x$ac_file" != x..; then
mv conftest.h $ac_file
fi
fi; done
rm -f conftest.sed
])dnl
dnl
dnl AC_OUTPUT_LINKS(DEST..., SOURCE...)
AC_DEFUN(AC_OUTPUT_LINKS,
[ac_links="$1"
ac_files="$2"
@ -1709,6 +1656,7 @@ while test -n "${ac_files}"; do
done
])dnl
dnl
dnl AC_OUTPUT_SUBDIRS(DIRECTORY...)
AC_DEFUN(AC_OUTPUT_SUBDIRS,
[if test -z "${norecursion}"; then

37
acspecific.m4
View File

@ -30,7 +30,8 @@ dnl Idea borrowed from dist 3.0.
dnl Internal use only.
AC_DEFUN(AC_PROG_ECHO_N,
[if (echo "testing\c"; echo 1,2,3) | grep c >/dev/null; then
if (echo -n testing; echo 1,2,3) | grep -e -n > /dev/null; then
# Stardent Vistra SVR4 grep lacks -e, says ghazi@caip.rutgers.edu.
if (echo -n testing; echo 1,2,3) | sed s/-n/xn/ | grep xn > /dev/null; then
ac_n= ac_c='
' ac_t=' '
else
@ -87,15 +88,14 @@ if test $ac_cv_prog_gcc = yes; then
AC_MSG_CHECKING(whether -traditional is needed)
AC_CACHE_VAL(ac_cv_prog_gcc_traditional,
[ ac_pattern="Autoconf.*'x'"
ac_prog='#include <sgtty.h>
Autoconf TIOCGETP'
AC_EGREP_CPP($ac_pattern, $ac_prog,
AC_EGREP_CPP($ac_pattern, [#include <sgtty.h>
Autoconf TIOCGETP],
ac_cv_prog_gcc_traditional=yes, ac_cv_prog_gcc_traditional=no)
if test $ac_cv_prog_gcc_traditional = no; then
ac_prog='#include <termio.h>
Autoconf TCGETA'
AC_EGREP_CPP($ac_pattern, $ac_prog, ac_cv_prog_gcc_traditional=yes)
AC_EGREP_CPP($ac_pattern, [#include <termio.h>
Autoconf TCGETA],
ac_cv_prog_gcc_traditional=yes)
fi])dnl
AC_MSG_RESULT($ac_cv_prog_gcc_traditional)
if test $ac_cv_prog_gcc_traditional = yes; then
@ -547,9 +547,10 @@ AC_DEFUN(AC_TYPE_GETGROUPS,
[AC_REQUIRE([AC_TYPE_UID_T])dnl
AC_MSG_CHECKING(type of array argument to getgroups)
AC_CACHE_VAL(ac_cv_type_getgroups,
[changequote(, )dnl
dnl Do not put single quotes in the C program text!
ac_prog='/* Thanks to Mike Rendell for this test. */
[AC_TRY_RUN(
changequote(<<, >>)dnl
<<
/* Thanks to Mike Rendell for this test. */
#include <sys/types.h>
#define NGID 256
#undef MAX
@ -568,9 +569,9 @@ main()
/* Exit non-zero if getgroups seems to require an array of ints. This
happens when gid_t is short but getgroups modifies an array of ints. */
exit ((n > 0 && gidset[n] != val.gval) ? 1 : 0);
}'
}
>>,
changequote([, ])dnl
AC_TRY_RUN([$ac_prog],
ac_cv_type_getgroups=gid_t, ac_cv_type_getgroups=int)])dnl
AC_MSG_RESULT($ac_cv_type_getgroups)
AC_DEFINE_UNQUOTED(GETGROUPS_T, $ac_cv_type_getgroups)
@ -1310,9 +1311,10 @@ AC_DEFUN(AC_C_CONST,
dnl and with the result message.
AC_MSG_CHECKING([for working const])
AC_CACHE_VAL(ac_cv_c_const,
[changequote(, )dnl
dnl Do not put single quotes in the C program text!
ac_prog='/* Ultrix mips cc rejects this. */
[AC_TRY_LINK(,
changequote(<<, >>)dnl
<<
/* Ultrix mips cc rejects this. */
typedef int charset[2]; const charset x;
/* SunOS 4.1.1 cc rejects this. */
char const *const *ccp;
@ -1349,9 +1351,10 @@ ccp = (char const *const *) p;
}
{ /* ULTRIX-32 V3.1 (Rev 9) vcc rejects this */
const int foo = 10;
}'
}
>>,
changequote([, ])dnl
AC_TRY_LINK(, [$ac_prog], ac_cv_c_const=yes, ac_cv_c_const=no)])dnl
ac_cv_c_const=yes, ac_cv_c_const=no)])dnl
AC_MSG_RESULT($ac_cv_c_const)
if test $ac_cv_c_const = no; then
AC_DEFINE(const, )

103
autoconf.texi
View File

@ -6,8 +6,8 @@
@c @setchapternewpage odd
@c %**end of header
@set EDITION 1.100
@set VERSION 1.100
@set EDITION 1.101
@set VERSION 1.101
@set UPDATED August 1994
@iftex
@ -120,7 +120,6 @@ Making @code{configure} Scripts
* Invoking ifnames:: Listing the conditionals in source code.
* Invoking autoreconf:: Remaking multiple @code{configure} scripts.
* Invoking autoupdate:: Replacing old macro names in @code{configure.in}.
* Invoking shindent:: Making @code{configure} scripts more readable.
Specific Tests
@ -383,7 +382,6 @@ Makefile.in ---' `-> Makefile ---'
* Invoking ifnames:: Listing the conditionals in source code.
* Invoking autoreconf:: Remaking multiple @code{configure} scripts.
* Invoking autoupdate:: Replacing old macro names in @code{configure.in}.
* Invoking shindent:: Making @code{configure} scripts more readable.
@end menu
@node Writing configure.in, Invoking autoconf, , Making configure Scripts
@ -636,7 +634,7 @@ Print the name of each directory where @code{autoreconf} runs
Print the version number of @code{autoreconf} and exit.
@end table
@node Invoking autoupdate, Invoking shindent, Invoking autoreconf, Making configure Scripts
@node Invoking autoupdate, , Invoking autoreconf, Making configure Scripts
@section Invoking autoupdate
The @code{autoupdate} program updates a @file{configure.in} file that
@ -674,56 +672,6 @@ default installation directory.
Print the version number of @code{autoupdate} and exit.
@end table
@node Invoking shindent, , Invoking autoupdate, Making configure Scripts
@section Invoking shindent
Autoconf-generated @code{configure} scripts can be somewhat hard to
read, because they @emph{look} machine-generated---mainly because they
do not use whitespace rationally. Unfortunately, it is impossible to do
proper indentation using a macro processor like @code{m4}. However, if
you have GNU @code{bash} installed, you can use the @code{shindent}
program, which uses @code{bash} to give a Bourne shell script readable
indentation.
@code{shindent} indents each script named on the command line, backing
up the original version with the suffix @file{~} (or the value of the
environment variable @code{SIMPLE_BACKUP_SUFFIX}, if that is set).
@code{shindent} places some restrictions on its input, due to the way it
uses @code{bash} to do the indentation:
@itemize @bullet
@item
It removes comments and blank lines between cases case statements.
@item
Doing odd things in case statements might cause odd problems.
@item
The script must not define any shell functions.
@item
If any string literals or here-documents contain lines that start
with four spaces, those spaces will be removed.
@item
The script must not be @code{shindent} itself.
@end itemize
@noindent
@code{shindent} accepts the following options:
@table @code
@item --help
Print a summary of the command line options and exit.
@item --macrodir=@var{dir}
Look for the Autoconf macro files in directory @var{dir} instead of the
default installation directory. Only used to get the version number.
@item --version
Print the version number of @code{shindent} and exit.
@end table
@node Specific Tests, General Purpose Macros, Making configure Scripts, Top
@chapter Specific Tests
@ -2259,18 +2207,26 @@ variables.
@defmac AC_DEFINE (@var{variable} @r{[}, @var{value}@r{]})
@maindex DEFINE
Define C preprocessor variable @var{variable}. If @var{value} is given,
set @var{variable} to that value, otherwise set it to 1. To use a shell
variable as the value, use @code{AC_DEFINE_UNQUOTED} instead and precede
double quotes in the value with backslashes.
set @var{variable} to that value (verbatim), otherwise set it to 1.
@var{value} should not contain literal newlines, and if you are not
using @code{AC_CONFIG_HEADER} it should not contain any @samp{#}
characters, as @code{make} tends to eat them. To use a shell variable
as the value, use @code{AC_DEFINE_UNQUOTED} instead.
This macro adds to the shell variable @code{DEFS}. @code{AC_OUTPUT}
later substitutes the values in @code{DEFS} into the file(s) that it
generates (typically @file{Makefile}). Alternately, if
@code{AC_CONFIG_HEADER} has been called, @code{AC_OUTPUT} creates a
header file by substituting the correct values into @code{#define}
statements in a template file.
@code{AC_OUTPUT} substitutes the values defined by this macro as the
variable @code{DEFS} in the file(s) that it generates (typically
@file{Makefile}). Unlike in Autoconf version 1, there is no variable
@code{DEFS} defined while @code{configure} is running, so macros cannot
check its value for the results of previous tests. This difference is
because properly quoting the contents of that variable turned out to be
too cumbersome and inefficient to do every time @code{AC_DEFINE} is
called. Checking cache variable values is a cleaner way to get the
effect of checking the value of @code{DEFS}.
For example, suppose your @file{configure.in} calls
If @code{AC_CONFIG_HEADER} has been called, then instead of substituting
@code{DEFS}, @code{AC_OUTPUT} creates a header file by substituting the
correct values into @code{#define} statements in a template file. For
example, suppose your @file{configure.in} calls
@code{AC_CONFIG_HEADER(conf.h)} and @code{AC_CHECK_HEADERS(unistd.h)}.
You could have code like this in @file{conf.h.in}:
@ -2326,15 +2282,14 @@ AC_CHECK_HEADER(elf.h, AC_DEFINE(SVR4); LIBS="$LIBS -lelf")
@defmac AC_DEFINE_UNQUOTED (@var{variable} @r{[}, @var{value}@r{]})
@maindex DEFINE_UNQUOTED
Like @code{AC_DEFINE}, but it does nothing to quote @var{value} from
various shell and @code{sed} expansions it will undergo. @var{value}
will be used in many different contexts requiring different quoting, and
it is up to you to make sure it works right. Use this macro instead of
@code{AC_DEFINE} when @var{value} contains a shell variable. For
Like @code{AC_DEFINE}, but three shell expansions are performed once on
@var{value}: variable expansion (@samp{$}), command substitution
(@samp{`}), and backslash escaping (@samp{\}). Use this macro instead
of @code{AC_DEFINE} when @var{value} contains a shell variable. For
example:
@example
AC_DEFINE_UNQUOTED(config_machfile, $@{machfile@})
AC_DEFINE_UNQUOTED(config_machfile, "$@{machfile@}")
@end example
@end defmac
@ -2977,12 +2932,6 @@ AC_CHECK_FUNC(_doprnt, AC_DEFINE(HAVE_DOPRNT))
fi
@end example
@noindent
Unlike in Autoconf version 1, there is no shell variable @code{DEFS} set
while @code{configure} is running. This difference is because properly
quoting the contents of that variable turned out to be too cumbersome to
do every time @code{AC_DEFINE} is called.
@node Test Programs, Multiple Cases, Checking for Symbols, Writing Macros
@section Test Programs

3
autoheader.in
View File

@ -87,6 +87,9 @@ esac
frob='define([AC_DEFINE],[#
@@@syms="$syms $1"@@@
])dnl
define([AC_DEFINE_UNQUOTED],[#
@@@syms="$syms $1"@@@
])dnl
define([AC_SIZEOF_TYPE],[#
@@@types="$types,$1"@@@
])dnl

3
autoheader.sh
View File

@ -87,6 +87,9 @@ esac
frob='define([AC_DEFINE],[#
@@@syms="$syms $1"@@@
])dnl
define([AC_DEFINE_UNQUOTED],[#
@@@syms="$syms $1"@@@
])dnl
define([AC_SIZEOF_TYPE],[#
@@@types="$types,$1"@@@
])dnl

1
autoreconf.in
View File

@ -66,7 +66,6 @@ while read confin; do
cd $dir || exit 1
test $verbose = yes && echo running autoconf in $dir
autoconf
# FIXME maybe we should have an option to run shindent here.
if grep AC_CONFIG_HEADER configure.in > /dev/null; then
test $verbose = yes && echo running autoheader in $dir
autoheader

1
autoreconf.sh
View File

@ -66,7 +66,6 @@ while read confin; do
cd $dir || exit 1
test $verbose = yes && echo running autoconf in $dir
autoconf
# FIXME maybe we should have an option to run shindent here.
if grep AC_CONFIG_HEADER configure.in > /dev/null; then
test $verbose = yes && echo running autoheader in $dir
autoheader

3
bin/autoheader.in
View File

@ -87,6 +87,9 @@ esac
frob='define([AC_DEFINE],[#
@@@syms="$syms $1"@@@
])dnl
define([AC_DEFINE_UNQUOTED],[#
@@@syms="$syms $1"@@@
])dnl
define([AC_SIZEOF_TYPE],[#
@@@types="$types,$1"@@@
])dnl

1
bin/autoreconf.in
View File

@ -66,7 +66,6 @@ while read confin; do
cd $dir || exit 1
test $verbose = yes && echo running autoconf in $dir
autoconf
# FIXME maybe we should have an option to run shindent here.
if grep AC_CONFIG_HEADER configure.in > /dev/null; then
test $verbose = yes && echo running autoheader in $dir
autoheader

7
configure.in
View File

@ -17,13 +17,6 @@ else
AC_MSG_WARN(autoscan will not be built since perl is not found)
fi
AC_CHECK_PROG(BASH, bash, no-bash)
if test "$BASH" != no-bash; then
PROGS="$PROGS shindent"
else
AC_MSG_WARN(shindent will not be built since bash is not found)
fi
AC_PROG_INSTALL
# Work with the GNU or Cygnus source tree layout.

16
doc/Makefile.in
View File

@ -57,8 +57,7 @@ DISTFILES = COPYING ChangeLog ChangeLog.1 ChangeLog.0 INSTALL \
acconfig.h acfunctions acgeneral.m4 acheaders acidentifiers \
acmakevars acoldnames.m4 acprograms acspecific.m4 autoconf.info* \
autoconf.m4 autoconf.sh autoconf.texi install.texi \
autoheader.sh autoreconf.sh autoscan.pl autoupdate.sh \
shindent.sh ifnames.sh \
autoheader.sh autoreconf.sh autoscan.pl autoupdate.sh ifnames.sh \
config.guess config.sub configure configure.in \
install.sh mkinstalldirs texinfo.tex \
testsuite/Makefile.in testsuite/config/*.exp \
@ -86,10 +85,6 @@ autoupdate: autoupdate.sh
rm -f $@ $@.tmp
$(editsh) $(srcdir)/autoupdate.sh > $@.tmp && mv $@.tmp $@ && chmod +x $@
shindent: shindent.sh
rm -f $@ $@.tmp
$(editsh) $(srcdir)/shindent.sh > $@.tmp && mv $@.tmp $@ && chmod +x $@
ifnames: ifnames.sh
rm -f $@ $@.tmp
$(editsh) $(srcdir)/ifnames.sh > $@.tmp && mv $@.tmp $@ && chmod +x $@
@ -141,9 +136,6 @@ install: all acgeneral.m4 acoldnames.m4 acspecific.m4 acconfig.h \
$(INSTALL_DATA) $(srcdir)/acconfig.h $(acdatadir)/acconfig.h
-if test -f autoscan; then \
$(INSTALL_PROGRAM) autoscan $(bindir)/autoscan; \
else :; fi
-if test -f shindent; then \
$(INSTALL_PROGRAM) shindent $(bindir)/shindent; \
$(INSTALL_DATA) $(srcdir)/acfunctions $(acdatadir)/acfunctions; \
$(INSTALL_DATA) $(srcdir)/acheaders $(acdatadir)/acheaders; \
$(INSTALL_DATA) $(srcdir)/acidentifiers $(acdatadir)/acidentifiers; \
@ -163,8 +155,7 @@ install-info: info installdirs
uninstall:
rm -f $(bindir)/autoconf $(bindir)/autoheader $(bindir)/autoscan
rm -f $(bindir)/autoreconf $(bindir)/autoupdate
rm -f $(bindir)/shindent $(bindir)/ifnames
rm -f $(bindir)/autoreconf $(bindir)/autoupdate $(bindir)/ifnames
rm -fr $(acdatadir)
cd $(infodir); rm -f autoconf.info*
if test -f standards.info || test -f $(srcdir)/standards.info; \
@ -188,8 +179,7 @@ clean mostlyclean distclean realclean::
done
clean mostlyclean distclean realclean::
rm -f autoconf autoheader autoscan autoreconf autoupdate
rm -f shindent ifnames *.tmp
rm -f autoconf autoheader autoscan autoreconf autoupdate ifnames *.tmp
rm -f *.aux *.cp *.cps *.dvi *.fn *.fns *.ky *.kys *.log
rm -f *.pg *.pgs *.toc *.tp *.tps *.vr *.vrs *.ma *.mas

103
doc/autoconf.texi
View File

@ -6,8 +6,8 @@
@c @setchapternewpage odd
@c %**end of header
@set EDITION 1.100
@set VERSION 1.100
@set EDITION 1.101
@set VERSION 1.101
@set UPDATED August 1994
@iftex
@ -120,7 +120,6 @@ Making @code{configure} Scripts
* Invoking ifnames:: Listing the conditionals in source code.
* Invoking autoreconf:: Remaking multiple @code{configure} scripts.
* Invoking autoupdate:: Replacing old macro names in @code{configure.in}.
* Invoking shindent:: Making @code{configure} scripts more readable.
Specific Tests
@ -383,7 +382,6 @@ Makefile.in ---' `-> Makefile ---'
* Invoking ifnames:: Listing the conditionals in source code.
* Invoking autoreconf:: Remaking multiple @code{configure} scripts.
* Invoking autoupdate:: Replacing old macro names in @code{configure.in}.
* Invoking shindent:: Making @code{configure} scripts more readable.
@end menu
@node Writing configure.in, Invoking autoconf, , Making configure Scripts
@ -636,7 +634,7 @@ Print the name of each directory where @code{autoreconf} runs
Print the version number of @code{autoreconf} and exit.
@end table
@node Invoking autoupdate, Invoking shindent, Invoking autoreconf, Making configure Scripts
@node Invoking autoupdate, , Invoking autoreconf, Making configure Scripts
@section Invoking autoupdate
The @code{autoupdate} program updates a @file{configure.in} file that
@ -674,56 +672,6 @@ default installation directory.
Print the version number of @code{autoupdate} and exit.
@end table
@node Invoking shindent, , Invoking autoupdate, Making configure Scripts
@section Invoking shindent
Autoconf-generated @code{configure} scripts can be somewhat hard to
read, because they @emph{look} machine-generated---mainly because they
do not use whitespace rationally. Unfortunately, it is impossible to do
proper indentation using a macro processor like @code{m4}. However, if
you have GNU @code{bash} installed, you can use the @code{shindent}
program, which uses @code{bash} to give a Bourne shell script readable
indentation.
@code{shindent} indents each script named on the command line, backing
up the original version with the suffix @file{~} (or the value of the
environment variable @code{SIMPLE_BACKUP_SUFFIX}, if that is set).
@code{shindent} places some restrictions on its input, due to the way it
uses @code{bash} to do the indentation:
@itemize @bullet
@item
It removes comments and blank lines between cases case statements.
@item
Doing odd things in case statements might cause odd problems.
@item
The script must not define any shell functions.
@item
If any string literals or here-documents contain lines that start
with four spaces, those spaces will be removed.
@item
The script must not be @code{shindent} itself.
@end itemize
@noindent
@code{shindent} accepts the following options:
@table @code
@item --help
Print a summary of the command line options and exit.
@item --macrodir=@var{dir}
Look for the Autoconf macro files in directory @var{dir} instead of the
default installation directory. Only used to get the version number.
@item --version
Print the version number of @code{shindent} and exit.
@end table
@node Specific Tests, General Purpose Macros, Making configure Scripts, Top
@chapter Specific Tests
@ -2259,18 +2207,26 @@ variables.
@defmac AC_DEFINE (@var{variable} @r{[}, @var{value}@r{]})
@maindex DEFINE
Define C preprocessor variable @var{variable}. If @var{value} is given,
set @var{variable} to that value, otherwise set it to 1. To use a shell
variable as the value, use @code{AC_DEFINE_UNQUOTED} instead and precede
double quotes in the value with backslashes.
set @var{variable} to that value (verbatim), otherwise set it to 1.
@var{value} should not contain literal newlines, and if you are not
using @code{AC_CONFIG_HEADER} it should not contain any @samp{#}
characters, as @code{make} tends to eat them. To use a shell variable
as the value, use @code{AC_DEFINE_UNQUOTED} instead.
This macro adds to the shell variable @code{DEFS}. @code{AC_OUTPUT}
later substitutes the values in @code{DEFS} into the file(s) that it
generates (typically @file{Makefile}). Alternately, if
@code{AC_CONFIG_HEADER} has been called, @code{AC_OUTPUT} creates a
header file by substituting the correct values into @code{#define}
statements in a template file.
@code{AC_OUTPUT} substitutes the values defined by this macro as the
variable @code{DEFS} in the file(s) that it generates (typically
@file{Makefile}). Unlike in Autoconf version 1, there is no variable
@code{DEFS} defined while @code{configure} is running, so macros cannot
check its value for the results of previous tests. This difference is
because properly quoting the contents of that variable turned out to be
too cumbersome and inefficient to do every time @code{AC_DEFINE} is
called. Checking cache variable values is a cleaner way to get the
effect of checking the value of @code{DEFS}.
For example, suppose your @file{configure.in} calls
If @code{AC_CONFIG_HEADER} has been called, then instead of substituting
@code{DEFS}, @code{AC_OUTPUT} creates a header file by substituting the
correct values into @code{#define} statements in a template file. For
example, suppose your @file{configure.in} calls
@code{AC_CONFIG_HEADER(conf.h)} and @code{AC_CHECK_HEADERS(unistd.h)}.
You could have code like this in @file{conf.h.in}:
@ -2326,15 +2282,14 @@ AC_CHECK_HEADER(elf.h, AC_DEFINE(SVR4); LIBS="$LIBS -lelf")
@defmac AC_DEFINE_UNQUOTED (@var{variable} @r{[}, @var{value}@r{]})
@maindex DEFINE_UNQUOTED
Like @code{AC_DEFINE}, but it does nothing to quote @var{value} from
various shell and @code{sed} expansions it will undergo. @var{value}
will be used in many different contexts requiring different quoting, and
it is up to you to make sure it works right. Use this macro instead of
@code{AC_DEFINE} when @var{value} contains a shell variable. For
Like @code{AC_DEFINE}, but three shell expansions are performed once on
@var{value}: variable expansion (@samp{$}), command substitution
(@samp{`}), and backslash escaping (@samp{\}). Use this macro instead
of @code{AC_DEFINE} when @var{value} contains a shell variable. For
example:
@example
AC_DEFINE_UNQUOTED(config_machfile, $@{machfile@})
AC_DEFINE_UNQUOTED(config_machfile, "$@{machfile@}")
@end example
@end defmac
@ -2977,12 +2932,6 @@ AC_CHECK_FUNC(_doprnt, AC_DEFINE(HAVE_DOPRNT))
fi
@end example
@noindent
Unlike in Autoconf version 1, there is no shell variable @code{DEFS} set
while @code{configure} is running. This difference is because properly
quoting the contents of that variable turned out to be too cumbersome to
do every time @code{AC_DEFINE} is called.
@node Test Programs, Multiple Cases, Checking for Symbols, Writing Macros
@section Test Programs

428
lib/autoconf/general.m4
View File

@ -35,7 +35,7 @@ Install it before installing Autoconf or set the
M4 environment variable to its path name.
)m4exit(2)])dnl
dnl
define(AC_ACVERSION, 1.100)dnl
define(AC_ACVERSION, 1.101)dnl
dnl This is defined by the --version option of the autoconf script.
ifdef([AC_PRINT_VERSION], [Autoconf version AC_ACVERSION
m4exit(0)])dnl
@ -53,12 +53,12 @@ divert(AC_DIVERSION_NORMAL)dnl
dnl
dnl Define a macro which automatically provides itself.
dnl Use instead of define for macros to be used as functions.
dnl
dnl AC_DEFUN(NAME, EXPANSION)
define([AC_DEFUN],
[define($1,
[define([AC_PROVIDE_$1], )][$2])])dnl
dnl
dnl AC_INIT_NOTICE()
AC_DEFUN(AC_INIT_NOTICE,
[# Guess values for system-dependent variables and create Makefiles.
# Generated automatically using autoconf version] AC_ACVERSION [
@ -79,6 +79,7 @@ AC_DEFUN(AC_INIT_NOTICE,
# Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
])dnl
dnl
dnl AC_INIT_PARSE_ARGS()
AC_DEFUN(AC_INIT_PARSE_ARGS,
[AC_BEFORE([$0], [AC_ARG_ENABLE])dnl
AC_BEFORE([$0], [AC_ARG_WITH])dnl
@ -361,12 +362,13 @@ if test -n "$ac_prev"; then
fi
])dnl
dnl
dnl Try to have only one #! line, just so it doesn't look funny.
dnl
dnl Try to have only one #! line, so the script doesn't look funny.
dnl AC_BINSH()
AC_DEFUN(AC_BINSH,
[#!/bin/sh
])dnl
dnl
dnl AC_INIT(UNIQUE-FILE-IN-SOURCE-DIR)
AC_DEFUN(AC_INIT,
[AC_REQUIRE([AC_BINSH])dnl
AC_INIT_NOTICE
@ -472,6 +474,11 @@ AC_CACHE_LOAD
AC_LANG_C
undivert(AC_DIVERSION_ARG)dnl
dnl Substitute for predefined variables.
AC_SUBST(LIBS)dnl
AC_SUBST(prefix)dnl
AC_SUBST(exec_prefix)dnl
AC_SUBST(DEFS)dnl
])dnl
dnl
dnl AC_ARG_ENABLE(FEATURE, HELP-STRING, ACTION-IF-TRUE [, ACTION-IF-FALSE])
@ -537,30 +544,33 @@ AC_DEFUN(AC_REVISION,
dnl
dnl Subroutines of AC_PREREQ.
dnl
dnl Change the dots in version number $1 into commas.
dnl Change the dots in NUMBER into commas.
dnl AC_PREREQ_SPLIT(NUMBER)
AC_DEFUN(AC_PREREQ_SPLIT,
[translit($1, ., [, ])])dnl
dnl
dnl Default the ternary version number to 0 (e.g., 1, 7 -> 1, 7, 0).
dnl AC_PREREQ_CANON(MAJOR, MINOR [,TERNARY])
AC_DEFUN(AC_PREREQ_CANON,
[$1, $2, ifelse([$3], , 0, [$3])])dnl
dnl
dnl Complain and exit if the version number in $1 through $3 is less than
dnl the version number in $4 through $6.
dnl $7 is the printable version of the second version number.
dnl Complain and exit if version number 1 is less than version number 2.
dnl PRINTABLE2 is the printable version of version number 2.
dnl AC_PREREQ_COMPARE(MAJOR1, MINOR1, TERNARY1, MAJOR2, MINOR2, TERNARY2,
dnl PRINTABLE2)
AC_DEFUN(AC_PREREQ_COMPARE,
[ifelse(builtin([eval],
[$3 + $2 * 100 + $1 * 10000 < $6 + $5 * 100 + $4 * 10000]), 1,
[errprint(Autoconf version $7 or higher is required
)m4exit(3)])])dnl
dnl
dnl Complain and exit if the Autoconf version is less than $1.
dnl Complain and exit if the Autoconf version is less than VERSION.
dnl AC_PREREQ(VERSION)
AC_DEFUN(AC_PREREQ,
[AC_PREREQ_COMPARE(AC_PREREQ_CANON(AC_PREREQ_SPLIT(AC_ACVERSION)),
AC_PREREQ_CANON(AC_PREREQ_SPLIT([$1])), [$1])])dnl
dnl
dnl Run configure in subdirectories $1.
dnl Run configure in subdirectories DIR...
dnl Not actually done until AC_OUTPUT_SUBDIRS.
dnl AC_CONFIG_SUBDIRS(DIR ...)
AC_DEFUN(AC_CONFIG_SUBDIRS,
@ -586,7 +596,7 @@ changequote(<<, >>)dnl
changequote([, ])dnl
fi
fi
undefine(AC_VAR_NAME)dnl
undefine([AC_VAR_NAME])dnl
])dnl
AC_DEFUN(AC_PREFIX,
[AC_OBSOLETE([$0], [; instead use AC_PREFIX_PROGRAM before AC_INIT])dnl
@ -597,8 +607,8 @@ dnl ### Canonicalizing the system type
dnl
dnl
dnl Find install.sh, config.sub, config.guess, and Cygnus configure
dnl in directory $1. These are auxiliary files used in configuration.
dnl $1 can be either absolute or relative to ${srcdir}.
dnl in directory DIR. These are auxiliary files used in configuration.
dnl DIR can be either absolute or relative to ${srcdir}.
dnl AC_CONFIG_AUX_DIR(DIR)
AC_DEFUN(AC_CONFIG_AUX_DIR,
[AC_CONFIG_AUX_DIRS($1 ${srcdir}/$1)])dnl
@ -738,8 +748,8 @@ AC_SUBST(build_vendor)dnl
AC_SUBST(build_os)dnl
])dnl
dnl
dnl Link each of the existing files in $2 to the corresponding
dnl link name in $1.
dnl Link each of the existing files FILE... to the corresponding
dnl link name in LINK...
dnl Not actually done until AC_OUTPUT_LINKS.
dnl AC_LINK_FILES(LINK ..., FILE ...)
AC_DEFUN(AC_LINK_FILES,
@ -750,6 +760,7 @@ dnl ### Caching test results
dnl
dnl
dnl Look for site or system specific initialization scripts.
dnl AC_SITE_LOAD()
AC_DEFUN(AC_SITE_LOAD,
[# Prefer explicitly selected file to automatically selected ones.
if test ! -r "$CONFIG_SITE"; then
@ -771,6 +782,7 @@ for ac_site_file in $CONFIG_SITE; do
done
])dnl
dnl
dnl AC_CACHE_LOAD()
AC_DEFUN(AC_CACHE_LOAD,
[if test -r "$cache_file"; then
echo "loading cache $cache_file"
@ -781,10 +793,11 @@ else
fi
])dnl
dnl
dnl AC_CACHE_SAVE()
AC_DEFUN(AC_CACHE_SAVE,
[if test -w $cache_file; then
echo "updating cache $cache_file"
cat > $cache_file <<\CEOF
cat > $cache_file <<\EOF
# This file is a shell script that caches the results of configure
# tests run on this system so they can be shared between configure
# scripts and configure runs. It is not useful on other systems.
@ -798,7 +811,7 @@ cat > $cache_file <<\CEOF
# Giving --cache-file=/dev/null disables caching, for debugging configure.
# config.status only pays attention to the cache file if you give it the
# --recheck option to rerun configure.
CEOF
EOF
changequote(, )dnl
dnl Allow a site initialization script to override cache values.
# Ultrix sh set writes to stderr and can't be redirected directly.
@ -809,8 +822,8 @@ echo "not updating unwritable cache $cache_file"
fi
])dnl
dnl
dnl AC_CACHE_VAL(CACHE-ID, COMMANDS-TO-SET-IT)
dnl The name of shell var CACHE-ID must contain `_cv_' in order to get saved.
dnl AC_CACHE_VAL(CACHE-ID, COMMANDS-TO-SET-IT)
AC_DEFUN(AC_CACHE_VAL,
[AC_REQUIRE([AC_PROG_ECHO_N])dnl
dnl We used to use the below line, but it fails if the 1st arg is a
@ -827,95 +840,22 @@ dnl
dnl ### Setting variables
dnl
dnl
dnl Several simple subroutines to do various flavors of quoting.
dnl
dnl Quote $1 against shell "s.
AC_DEFUN(AC_QUOTE_DQUOTE,
[dnl We use \1 instead of \& to avoid an m4 1.0.3 bug.
patsubst($1, changequote(, )\([$"`\\]\)changequote([, ]), \\\1)])dnl
dnl
dnl Quote $1 against shell 's.
AC_DEFUN(AC_QUOTE_SQUOTE,
[patsubst($1, ', '\\'')])dnl
dnl
dnl Quote $1 against shell here documents (<<EOF).
AC_DEFUN(AC_QUOTE_HERE,
[changequote({, })dnl
dnl We use \1 instead of \& to avoid an m4 1.0.3 bug.
patsubst(patsubst($1, \(\\[$`\\]\), \\\1), \([$`]\), \\\1){}dnl
changequote([, ])])dnl
dnl
dnl Quote $1 against the right hand side of a sed substitution.
AC_DEFUN(AC_QUOTE_SED,
[changequote({, })dnl
dnl We use \1 instead of \& to avoid an m4 1.0.3 bug.
dnl % and @ and ! are commonly used as the sed s separator character.
patsubst($1, \([&\\%@!]\), \\\1){}dnl
changequote([, ])])dnl
dnl
dnl Quote $1 against tokenization.
AC_DEFUN(AC_QUOTE_TOKEN,
[changequote({, })dnl
patsubst($1, \([ ]\), \\\1){}dnl
changequote([, ])])dnl
dnl
dnl Subroutines of AC_DEFINE. Does more quoting magic than any sane person
dnl should be able to understand. The point of it all is that what goes into
dnl Makefile et al should be verbatim what was written in configure.in.
AC_DEFUN(AC_DEFINE_QUOTE,
[AC_QUOTE_TOKEN(AC_QUOTE_SQUOTE(AC_QUOTE_DQUOTE($1)))])dnl
dnl
AC_DEFUN(AC_DEFINE_SEDQUOTE,
[AC_QUOTE_DQUOTE(AC_QUOTE_HERE(AC_QUOTE_HERE(AC_QUOTE_SED($1))))])dnl
dnl
dnl Don't compare $2 to a blank, so we can support "-Dfoo=".
dnl If creating a configuration header file, we add
dnl commands to ac_sed_defs to define the variable. ac_[due][ABCD]
dnl get defined in config.status. Here we just insert the
dnl variable parts of the string: the variable name to define
dnl and the value to give it.
dnl The newlines around the curly braces prevent sh syntax errors.
dnl Set VARIABLE to VALUE, verbatim, or 1.
dnl AC_DEFINE(VARIABLE [, VALUE])
AC_DEFUN(AC_DEFINE,
[
{
dnl Uniformly use AC_DEFINE_[SED]QUOTE, so callers of AC_DEFINE_UNQUOTED
dnl can use AC_QUOTE_* manually if they want to.
ifelse($#, 2,
[define([AC_VAL], $2)dnl],
[define([AC_VAL], 1)dnl])
dnl
echo "[#][define]" $1 "AC_QUOTE_SQUOTE(AC_VAL)" >> confdefs.h
dnl Define DEFS even if AC_LIST_HEADERS for use in user case statements.
DEFS="$DEFS -D$1=AC_QUOTE_SQUOTE(AC_VAL)"
ifdef([AC_LIST_HEADERS],
ac_sed_defs="dnl
${ac_sed_defs}\${ac_dA}$1\${ac_dB}$1\${ac_dC}AC_DEFINE_SEDQUOTE(AC_VAL)\${ac_dD}
\${ac_uA}$1\${ac_uB}$1\${ac_uC}AC_DEFINE_SEDQUOTE(AC_VAL)\${ac_uD}
\${ac_eA}$1\${ac_eB}$1\${ac_eC}AC_DEFINE_SEDQUOTE(AC_VAL)\${ac_eD}
"
)dnl
}
[cat >> confdefs.h <<\EOF
[#define] $1 ifelse($#, 2, [$2], 1)
EOF
])dnl
dnl
dnl Unsafe version of AC_DEFINE.
dnl Users are responsible for the quoting nightmare.
dnl Well, not all of it. We need to pull the identity function out to
dnl the top level, because m4 doesn't really support nested functions;
dnl it doesn't distinguish between the arguments to the outer
dnl function, which should be expanded, and the arguments to the inner
dnl function, which shouldn't yet.
AC_DEFUN(AC_QUOTE_IDENTITY,
$1)dnl
dnl Similar, but perform shell substitutions $ ` \ once on VALUE.
AC_DEFUN(AC_DEFINE_UNQUOTED,
[pushdef([AC_QUOTE_SQUOTE], defn([AC_QUOTE_IDENTITY]))dnl
pushdef([AC_DEFINE_SEDQUOTE], defn([AC_QUOTE_IDENTITY]))dnl
AC_DEFINE($1, $2)dnl
popdef([AC_DEFINE_SEDQUOTE])dnl
popdef([AC_QUOTE_SQUOTE])dnl
[cat >> confdefs.h <<EOF
[#define] $1 ifelse($#, 2, [$2], 1)
EOF
])dnl
dnl
dnl This macro protects the argument from being diverted twice
dnl This macro protects VARIABLE from being diverted twice
dnl if this macro is called twice for it.
dnl AC_SUBST(VARIABLE)
AC_DEFUN(AC_SUBST,
@ -936,6 +876,7 @@ elif test -f ${srcdir}/$2; then
AC_INSERT_FILE($1, ${srcdir}/$2)
fi
])dnl
dnl Internal subroutine of AC_SUBST_FILE.
AC_DEFUN(AC_INSERT_FILE,
[ifdef([AC_SUBST_$1], ,
[define([AC_SUBST_$1], )dnl
@ -954,6 +895,7 @@ AC_DEFUN(AC_MSG_CHECKING,
[AC_REQUIRE([AC_PROG_ECHO_N])dnl
echo $ac_n "checking $1""... $ac_c" 1>&AC_FD_MSG])dnl
dnl
dnl AC_CHECKING(FEATURE-DESCRIPTION)
AC_DEFUN(AC_CHECKING,
[echo "checking $1" 1>&AC_FD_MSG])dnl
dnl
@ -962,6 +904,7 @@ AC_DEFUN(AC_MSG_RESULT,
[AC_REQUIRE([AC_PROG_ECHO_N])dnl
echo "$ac_t""$1" 1>&AC_FD_MSG])dnl
dnl
dnl AC_VERBOSE(RESULT-DESCRIPTION)
AC_DEFUN(AC_VERBOSE,
[AC_OBSOLETE([$0], [; instead use AC_MSG_RESULT])dnl
echo " $1" 1>&AC_FD_MSG])dnl
@ -978,6 +921,7 @@ dnl
dnl ### Selecting which language to use for testing
dnl
dnl
dnl AC_LANG_C()
AC_DEFUN(AC_LANG_C,
[define([AC_LANG], [C])dnl
ac_ext=c
@ -986,6 +930,7 @@ ac_cpp='${CPP}'
ac_compile='${CC-cc} $CFLAGS $LDFLAGS conftest.${ac_ext} -o conftest $LIBS 1>&AC_FD_CC 2>&AC_FD_CC'
])dnl
dnl
dnl AC_LANG_CPLUSPLUS()
AC_DEFUN(AC_LANG_CPLUSPLUS,
[define([AC_LANG], [CPLUSPLUS])dnl
ac_ext=C
@ -995,10 +940,13 @@ ac_compile='${CXX-gcc} $CXXFLAGS $LDFLAGS conftest.${ac_ext} -o conftest $LIBS 1
])dnl
dnl
dnl Push the current language on a stack.
dnl
dnl AC_LANG_SAVE()
AC_DEFUN(AC_LANG_SAVE,
[pushdef([AC_LANG_STACK], AC_LANG)])dnl
dnl
dnl Restore the current language from the stack.
dnl AC_LANG_RESTORE()
AC_DEFUN(AC_LANG_RESTORE,
[ifelse(AC_LANG_STACK, C, [ifelse(AC_LANG, C, , [AC_LANG_C])], [ifelse(AC_LANG, CPLUSPLUS, , [AC_LANG_CPLUSPLUS])])[]popdef([AC_LANG_STACK])])dnl
dnl
@ -1029,7 +977,7 @@ dnl ### Checking for files - fundamental (caching)
dnl
dnl
dnl AC_CHECK_PROG(VARIABLE, PROG-TO-CHECK-FOR, VALUE-IF-FOUND
dnl [, VALUE-IF-NOT-FOUND])
dnl [, VALUE-IF-NOT-FOUND])
AC_DEFUN(AC_CHECK_PROG,
[# Extract the first word of "$2", so it can be a program name with args.
set dummy $2; ac_word=[$]2
@ -1121,12 +1069,12 @@ ifelse([$3], , , [test -n "[$]$1" || $1="$3"
])])dnl
dnl
dnl AC_CHECK_LIB(LIBRARY, FUNCTION, [, ACTION-IF-FOUND [, ACTION-IF-NOT-FOUND
dnl [, OTHER-LIBRARIES]]])
dnl [, OTHER-LIBRARIES]]])
AC_DEFUN(AC_CHECK_LIB,
[changequote(/, /)dnl
define(/AC_LIB_NAME/, dnl
patsubst(patsubst($1, /lib\([^\.]*\)\.a/, /\1/), /-l/, //))dnl
define(/AC_CV_NAME/, ac_cv_lib_//AC_LIB_NAME)dnl
[changequote(<<, >>)dnl
define(<<AC_LIB_NAME>>, dnl
patsubst(patsubst($1, <<lib\([^\.]*\)\.a>>, <<\1>>), <<-l>>, <<>>))dnl
define(<<AC_CV_NAME>>, ac_cv_lib_<<>>AC_LIB_NAME)dnl
changequote([, ])dnl
AC_MSG_CHECKING([for -l[]AC_LIB_NAME])
AC_CACHE_VAL(AC_CV_NAME,
@ -1145,8 +1093,8 @@ ifelse([$4], , , [else
$4
])dnl
fi
undefine(AC_LIB_NAME)dnl
undefine(AC_CV_NAME)dnl
undefine([AC_LIB_NAME])dnl
undefine([AC_CV_NAME])dnl
])dnl
dnl
dnl AC_HAVE_LIBRARY(LIBRARY, [, ACTION-IF-FOUND [, ACTION-IF-NOT-FOUND
@ -1168,7 +1116,7 @@ dnl
dnl Because this macro is used by AC_PROG_GCC_TRADITIONAL, which must
dnl come early, it is not included in AC_BEFORE checks.
dnl AC_EGREP_CPP(PATTERN, PROGRAM, ACTION-IF-FOUND [,
dnl ACTION-IF-NOT-FOUND])
dnl ACTION-IF-NOT-FOUND])
AC_DEFUN(AC_EGREP_CPP,
[AC_REQUIRE_CPP()dnl
cat > conftest.${ac_ext} <<EOF
@ -1198,7 +1146,7 @@ AC_TRY_LINK([$2], [$3], [$4], [$5])dnl
])dnl
dnl
dnl AC_TRY_LINK(INCLUDES, FUNCTION-BODY,
dnl ACTION-IF-FOUND [, ACTION-IF-NOT-FOUND])
dnl ACTION-IF-FOUND [, ACTION-IF-NOT-FOUND])
AC_DEFUN(AC_TRY_LINK,
[dnl We use return because because C++ requires a prototype for exit.
cat > conftest.${ac_ext} <<EOF
@ -1221,7 +1169,7 @@ rm -f conftest*]
)dnl
dnl
dnl AC_TRY_RUN(PROGRAM, ACTION-IF-TRUE [, ACTION-IF-FALSE
dnl [, ACTION-IF-CROSS-COMPILING]])
dnl [, ACTION-IF-CROSS-COMPILING]])
AC_DEFUN(AC_TRY_RUN,
[AC_REQUIRE([AC_C_CROSS])dnl
if test "$cross_compiling" = yes; then
@ -1320,7 +1268,7 @@ AC_CHECK_FUNC(${ac_func},
[changequote(, )dnl
ac_tr_func=HAVE_`echo $ac_func | tr '[a-z]' '[A-Z]'`
changequote([, ])dnl
AC_DEFINE(${ac_tr_func}) $2])dnl
AC_DEFINE_UNQUOTED(${ac_tr_func}) $2])dnl
done
])dnl
dnl
@ -1333,7 +1281,7 @@ AC_CHECK_HEADER(${ac_hdr},
[changequote(, )dnl
ac_tr_hdr=HAVE_`echo $ac_hdr | tr '[a-z]./' '[A-Z]__'`
changequote([, ])dnl
AC_DEFINE(${ac_tr_hdr}) $2])dnl
AC_DEFINE_UNQUOTED(${ac_tr_hdr}) $2])dnl
done
])dnl
dnl
@ -1366,8 +1314,8 @@ main()
}], AC_CV_NAME=`cat conftestval`)])dnl
AC_MSG_RESULT($AC_CV_NAME)
AC_DEFINE_UNQUOTED(AC_TYPE_NAME, $AC_CV_NAME)
undefine(AC_TYPE_NAME)dnl
undefine(AC_CV_NAME)dnl
undefine([AC_TYPE_NAME])dnl
undefine([AC_CV_NAME])dnl
])dnl
dnl
dnl AC_CHECK_TYPE(TYPE, DEFAULT)
@ -1397,36 +1345,19 @@ test "x$exec_prefix" = xNONE && exec_prefix='${prefix}'
# Any assignment to VPATH causes Sun make to only execute
# the first set of double-colon rules, so remove it if not needed.
# If there is a colon in the path, we need to keep it.
changequote(, )dnl
if test "x$srcdir" = x.; then
changequote(, )dnl
ac_vpsub='/^[ ]*VPATH[ ]*=[^:]*$/d'
changequote([, ])dnl
fi
# Quote sed substitution magic chars in DEFS.
cat >conftest.def <<EOF
$DEFS
EOF
ac_escape_ampersand_and_backslash='s%[&\\]%\\&%g'
DEFS=`sed "$ac_escape_ampersand_and_backslash" <conftest.def`
rm -f conftest.def
# Substitute for predefined variables.
changequote([, ])dnl
AC_SUBST(LIBS)dnl
AC_SUBST(prefix)dnl
AC_SUBST(exec_prefix)dnl
dnl Substituting for DEFS would confuse sed if it contains multiple lines.
ifdef([AC_LIST_HEADERS],
[divert(AC_DIVERSION_SED)dnl
s%@DEFS@%-DHAVE_CONFIG_H%],
[divert(AC_DIVERSION_SED)dnl
s%@DEFS@%$DEFS%
])dnl
divert(AC_DIVERSION_NORMAL)dnl
trap 'rm -f $CONFIG_STATUS conftest*; exit 1' 1 2 15
ifdef([AC_LIST_HEADERS], [DEFS=-DHAVE_CONFIG_H], [AC_OUTPUT_MAKE_DEFS()])
# Without the "./", some shells look in PATH for config.status.
: ${CONFIG_STATUS=./config.status}
trap "rm -f ${CONFIG_STATUS}; exit 1" 1 2 15
echo creating ${CONFIG_STATUS}
rm -f ${CONFIG_STATUS}
cat > ${CONFIG_STATUS} <<EOF
@ -1461,14 +1392,12 @@ do
esac
done
ac_given_srcdir=$srcdir
ifdef([AC_LIST_HEADERS],
[trap 'rm -fr $1 AC_LIST_HEADERS conftest*; exit 1' 1 2 15],
[trap 'rm -f $1; exit 1' 1 2 15])
ac_given_srcdir=$srcdir
EOF
cat >> ${CONFIG_STATUS} <<\EOF
AC_OUTPUT_FILES($1)
ifdef([AC_LIST_HEADERS], [AC_OUTPUT_HEADER(AC_LIST_HEADERS)])dnl
ifdef([AC_LIST_LINKS], [AC_OUTPUT_LINKS(AC_LIST_LINKS, AC_LIST_FILES)])dnl
@ -1477,14 +1406,49 @@ exit 0
EOF
chmod +x ${CONFIG_STATUS}
test "$no_create" = yes || ${CONFIG_SHELL-/bin/sh} ${CONFIG_STATUS}
dnl config.status should never do recursion.
dnl config.status should not do recursion.
ifdef([AC_LIST_SUBDIRS], [AC_OUTPUT_SUBDIRS(AC_LIST_SUBDIRS)])dnl
])dnl
dnl
dnl This is a subroutine of AC_OUTPUT. It is called inside a quoted
dnl This is a subroutine of AC_OUTPUT.
dnl AC_OUTPUT_MAKE_DEFS()
AC_DEFUN(AC_OUTPUT_MAKE_DEFS,
[# Transform confdefs.h into DEFS.
dnl Using a here document instead of a string reduces the quoting nightmare.
cat > conftest.defs <<\EOF
changequote(<<, >>)dnl
s%<<#define>> \([A-Za-z_][A-Za-z0-9_]*\) \(.*\)%-D\1=\2%g
# Protect against shell expansion while executing Makefile rules.
s%[ `~<<#>>$^&*(){}\\|;'"<>?]%\\&%g
s%\[%\\&%g
s%\]%\\&%g
# Protect against Makefile macro expansion.
s%\$%$$%g
# Protect against being on the right side of a sed subst in config.status.
s/[\\&%]/\\&/g
changequote([, ])dnl
EOF
DEFS=`sed -f conftest.defs confdefs.h | tr '\012' ' '`
rm -f conftest.defs
])dnl
dnl
dnl This is a subroutine of AC_OUTPUT. It is called inside an unquoted
dnl here document whose contents are going into config.status.
dnl AC_OUTPUT_FILES(FILE...)
AC_DEFUN(AC_OUTPUT_FILES,
[CONFIG_FILES=${CONFIG_FILES-"$1"}
[cat > conftest.subs <<\CEOF
dnl These here document variables are unquoted when configure runs
dnl but quoted when config.status runs, so variables are expanded once.
$ac_vpsub
dnl Shell code in configure.in might set extrasub.
$extrasub
dnl Insert the sed substitutions of variables.
undivert(AC_DIVERSION_SED)
CEOF
EOF
cat >> ${CONFIG_STATUS} <<\EOF
CONFIG_FILES=${CONFIG_FILES-"$1"}
for ac_file in .. ${CONFIG_FILES}; do if test "x$ac_file" != x..; then
# Support "outfile[:infile]", defaulting infile="outfile.in".
case "$ac_file" in
@ -1551,99 +1515,40 @@ a\\
}
" ;;
esac
sed -e "
$ac_comsub
EOF
cat >> ${CONFIG_STATUS} <<EOF
$ac_vpsub
dnl Shell code in configure.in might set extrasub.
$extrasub
dnl Insert the sed substitutions of variables.
undivert(AC_DIVERSION_SED)
s%@srcdir@%\$srcdir%g
s%@top_srcdir@%\$top_srcdir%g
ifdef([AC_PROVIDE_AC_PROG_INSTALL], [s%@INSTALL@%\$INSTALL%g
sed -e "$ac_comsub
s%@srcdir@%$srcdir%g
s%@top_srcdir@%$top_srcdir%g
ifdef([AC_PROVIDE_AC_PROG_INSTALL], [s%@INSTALL@%$INSTALL%g
])dnl
EOF
cat >> ${CONFIG_STATUS} <<\EOF
" $ac_given_srcdir/$ac_file_in > $ac_file
" -f conftest.subs $ac_given_srcdir/$ac_file_in > $ac_file
fi; done
rm -f conftest.subs
])dnl
dnl
dnl Create the header files listed in $1.
dnl This is a subroutine of AC_OUTPUT. It is called inside a quoted
dnl here document whose contents are going into config.status.
dnl AC_OUTPUT_HEADER(HEADER-FILE...)
AC_DEFUN(AC_OUTPUT_HEADER,
[changequote(<<, >>)dnl
# These sed commands are put into ac_sed_defs when defining a macro.
# They are broken into pieces to make the sed script easier to manage.
# They are passed to sed as "A NAME B NAME C VALUE D", where NAME
# is the cpp macro being defined and VALUE is the value it is being given.
# Each defining turns into a single global substitution command.
# Hopefully no one uses "!" as a variable value.
# Other candidates for the sed separators, like , and @, do get used.
# These sed commands are passed to sed as "A NAME B NAME C VALUE D", where
# NAME is the cpp macro being defined and VALUE is the value it is being given.
#
# ac_d sets the value in "#define NAME VALUE" lines.
ac_dA='s!^\([ ]*\)#\([ ]*define[ ][ ]*\)'
ac_dB='\([ ][ ]*\)[^ ]*!\1#\2'
ac_dA='s%^\([ ]*\)#\([ ]*define[ ][ ]*\)'
ac_dB='\([ ][ ]*\)[^ ]*%\1#\2'
ac_dC='\3'
ac_dD='!g'
ac_dD='%g'
# ac_u turns "#undef NAME" with trailing blanks into "#define NAME VALUE".
ac_uA='s!^\([ ]*\)#\([ ]*\)undef\([ ][ ]*\)'
ac_uB='\([ ]\)!\1#\2define\3'
ac_uA='s%^\([ ]*\)#\([ ]*\)undef\([ ][ ]*\)'
ac_uB='\([ ]\)%\1#\2define\3'
ac_uC=' '
ac_uD='\4!g'
ac_uD='\4%g'
# ac_e turns "#undef NAME" without trailing blanks into "#define NAME VALUE".
ac_eA='s!^\([ ]*\)#\([ ]*\)undef\([ ][ ]*\)'
ac_eB='<<$>>!\1#\2define\3'
ac_eA='s%^\([ ]*\)#\([ ]*\)undef\([ ][ ]*\)'
ac_eB='<<$>>%\1#\2define\3'
ac_eC=' '
ac_eD='!g'
ac_eD='%g'
changequote([, ])dnl
rm -f conftest.sed
EOF
# Turn off quoting long enough to insert the sed commands.
rm -f conftest.sh
cat > conftest.sh <<EOF
$ac_sed_defs
EOF
# Break up $ac_sed_defs (now in conftest.sh) because some shells have a limit
# on the size of here documents.
# Maximum number of lines to put in a single here document.
ac_max_sh_lines=9
while :
do
# wc gives bogus results for an empty file on some AIX systems.
ac_lines=`grep -c . conftest.sh`
if test -z "$ac_lines" || test "$ac_lines" -eq 0; then break; fi
rm -f conftest.s1 conftest.s2
sed ${ac_max_sh_lines}q conftest.sh > conftest.s1 # Like head -9.
sed 1,${ac_max_sh_lines}d conftest.sh > conftest.s2 # Like tail +10.
# Write a limited-size here document to append to conftest.sed.
echo 'cat >> conftest.sed <<CONFEOF' >> ${CONFIG_STATUS}
cat conftest.s1 >> ${CONFIG_STATUS}
echo 'CONFEOF' >> ${CONFIG_STATUS}
rm -f conftest.s1 conftest.sh
mv conftest.s2 conftest.sh
done
rm -f conftest.sh
# Now back to your regularly scheduled config.status.
cat >> ${CONFIG_STATUS} <<\EOF
# This sed command replaces #undef with comments. This is necessary, for
# example, in the case of _POSIX_SOURCE, which is predefined and required
# on some systems where configure will not decide to define it in
[#] $1.
cat >> conftest.sed <<\CONFEOF
changequote(, )dnl
s,^[ ]*#[ ]*undef[ ][ ]*[a-zA-Z_][a-zA-Z_0-9]*,/* & */,
changequote([, ])dnl
CONFEOF
rm -f conftest.h
# Break up the sed commands because old seds have small limits.
ac_max_sed_lines=20
CONFIG_HEADERS=${CONFIG_HEADERS-"$1"}
for ac_file in .. ${CONFIG_HEADERS}; do if test "x$ac_file" != x..; then
@ -1656,26 +1561,68 @@ for ac_file in .. ${CONFIG_HEADERS}; do if test "x$ac_file" != x..; then
echo creating $ac_file
cp $ac_given_srcdir/$ac_file_in conftest.h1
cp conftest.sed conftest.stm
while :
do
ac_lines=`grep -c . conftest.stm`
if test -z "$ac_lines" || test "$ac_lines" -eq 0; then break; fi
rm -f conftest.s1 conftest.s2 conftest.h2
sed ${ac_max_sed_lines}q conftest.stm > conftest.s1 # Like head -20.
sed 1,${ac_max_sed_lines}d conftest.stm > conftest.s2 # Like tail +21.
sed -f conftest.s1 < conftest.h1 > conftest.h2
rm -f conftest.s1 conftest.h1 conftest.stm
mv conftest.h2 conftest.h1
mv conftest.s2 conftest.stm
done
rm -f conftest.stm conftest.h
rm -f conftest.frag conftest.in conftest.out
cp $ac_given_srcdir/$ac_file_in conftest.in
EOF
# Transform confdefs.h into a sed script conftest.vals that substitutes
# the proper values into config.h.in to produce config.h.
rm -f conftest.vals
dnl Using a here document instead of a string reduces the quoting nightmare.
cat > conftest.hdr <<\EOF
changequote(<<, >>)dnl
# Protect against being on the right side of a sed subst in config.status.
s/[\\&%]/\\&/g
# Protect against being in an unquoted here document in config.status.
s%[\\$`]%\\&%g
s%<<#define>> \([A-Za-z_][A-Za-z0-9_]*\) \(.*\)%${ac_dA}\1${ac_dB}\1${ac_dC}\2${ac_dD}%gp
s%ac_d%ac_u%gp
s%ac_u%ac_e%gp
changequote([, ])dnl
EOF
sed -n -f conftest.hdr confdefs.h > conftest.vals
rm -f conftest.hdr
# This sed command replaces #undef with comments. This is necessary, for
# example, in the case of _POSIX_SOURCE, which is predefined and required
# on some systems where configure will not decide to define it.
cat >> conftest.vals <<\EOF
changequote(, )dnl
s%^[ ]*#[ ]*undef[ ][ ]*[a-zA-Z_][a-zA-Z_0-9]*%/* & */%
changequote([, ])dnl
EOF
# Break up conftest.vals because some shells have a limit on
# the size of here documents, and old seds have small limits too.
# Maximum number of lines to put in a single here document.
ac_max_here_lines=12
rm -f conftest.tail
while :
do
ac_lines=`grep -c . conftest.vals`
# grep -c gives empty output for an empty file on some AIX systems.
if test -z "$ac_lines" || test "$ac_lines" -eq 0; then break; fi
# Write a limited-size here document to conftest.frag.
echo ' cat > conftest.frag <<CEOF' >> ${CONFIG_STATUS}
sed ${ac_max_here_lines}q conftest.vals >> ${CONFIG_STATUS}
echo 'CEOF
sed -f conftest.frag conftest.in > conftest.out
mv conftest.out conftest.in
' >> ${CONFIG_STATUS}
sed 1,${ac_max_here_lines}d conftest.vals > conftest.tail
mv conftest.tail conftest.vals
done
rm -f conftest.vals
# Now back to your regularly scheduled config.status.
cat >> ${CONFIG_STATUS} <<\EOF
rm -f conftest.frag conftest.h
echo "/* $ac_file. Generated automatically by configure. */" > conftest.h
cat conftest.h1 >> conftest.h
rm -f conftest.h1
cat conftest.in >> conftest.h
rm -f conftest.in
if cmp -s $ac_file conftest.h 2>/dev/null; then
# The file exists and we would not be changing it.
echo "$ac_file is unchanged"
rm -f conftest.h
else
@ -1683,10 +1630,10 @@ for ac_file in .. ${CONFIG_HEADERS}; do if test "x$ac_file" != x..; then
mv conftest.h $ac_file
fi
fi; done
rm -f conftest.sed
])dnl
dnl
dnl AC_OUTPUT_LINKS(DEST..., SOURCE...)
AC_DEFUN(AC_OUTPUT_LINKS,
[ac_links="$1"
ac_files="$2"
@ -1709,6 +1656,7 @@ while test -n "${ac_files}"; do
done
])dnl
dnl
dnl AC_OUTPUT_SUBDIRS(DIRECTORY...)
AC_DEFUN(AC_OUTPUT_SUBDIRS,
[if test -z "${norecursion}"; then

37
lib/autoconf/specific.m4
View File

@ -30,7 +30,8 @@ dnl Idea borrowed from dist 3.0.
dnl Internal use only.
AC_DEFUN(AC_PROG_ECHO_N,
[if (echo "testing\c"; echo 1,2,3) | grep c >/dev/null; then
if (echo -n testing; echo 1,2,3) | grep -e -n > /dev/null; then
# Stardent Vistra SVR4 grep lacks -e, says ghazi@caip.rutgers.edu.
if (echo -n testing; echo 1,2,3) | sed s/-n/xn/ | grep xn > /dev/null; then
ac_n= ac_c='
' ac_t=' '
else
@ -87,15 +88,14 @@ if test $ac_cv_prog_gcc = yes; then
AC_MSG_CHECKING(whether -traditional is needed)
AC_CACHE_VAL(ac_cv_prog_gcc_traditional,
[ ac_pattern="Autoconf.*'x'"
ac_prog='#include <sgtty.h>
Autoconf TIOCGETP'
AC_EGREP_CPP($ac_pattern, $ac_prog,
AC_EGREP_CPP($ac_pattern, [#include <sgtty.h>
Autoconf TIOCGETP],
ac_cv_prog_gcc_traditional=yes, ac_cv_prog_gcc_traditional=no)
if test $ac_cv_prog_gcc_traditional = no; then
ac_prog='#include <termio.h>
Autoconf TCGETA'
AC_EGREP_CPP($ac_pattern, $ac_prog, ac_cv_prog_gcc_traditional=yes)
AC_EGREP_CPP($ac_pattern, [#include <termio.h>
Autoconf TCGETA],
ac_cv_prog_gcc_traditional=yes)
fi])dnl
AC_MSG_RESULT($ac_cv_prog_gcc_traditional)
if test $ac_cv_prog_gcc_traditional = yes; then
@ -547,9 +547,10 @@ AC_DEFUN(AC_TYPE_GETGROUPS,
[AC_REQUIRE([AC_TYPE_UID_T])dnl
AC_MSG_CHECKING(type of array argument to getgroups)
AC_CACHE_VAL(ac_cv_type_getgroups,
[changequote(, )dnl
dnl Do not put single quotes in the C program text!
ac_prog='/* Thanks to Mike Rendell for this test. */
[AC_TRY_RUN(
changequote(<<, >>)dnl
<<
/* Thanks to Mike Rendell for this test. */
#include <sys/types.h>
#define NGID 256
#undef MAX
@ -568,9 +569,9 @@ main()
/* Exit non-zero if getgroups seems to require an array of ints. This
happens when gid_t is short but getgroups modifies an array of ints. */
exit ((n > 0 && gidset[n] != val.gval) ? 1 : 0);
}'
}
>>,
changequote([, ])dnl
AC_TRY_RUN([$ac_prog],
ac_cv_type_getgroups=gid_t, ac_cv_type_getgroups=int)])dnl
AC_MSG_RESULT($ac_cv_type_getgroups)
AC_DEFINE_UNQUOTED(GETGROUPS_T, $ac_cv_type_getgroups)
@ -1310,9 +1311,10 @@ AC_DEFUN(AC_C_CONST,
dnl and with the result message.
AC_MSG_CHECKING([for working const])
AC_CACHE_VAL(ac_cv_c_const,
[changequote(, )dnl
dnl Do not put single quotes in the C program text!
ac_prog='/* Ultrix mips cc rejects this. */
[AC_TRY_LINK(,
changequote(<<, >>)dnl
<<
/* Ultrix mips cc rejects this. */
typedef int charset[2]; const charset x;
/* SunOS 4.1.1 cc rejects this. */
char const *const *ccp;
@ -1349,9 +1351,10 @@ ccp = (char const *const *) p;
}
{ /* ULTRIX-32 V3.1 (Rev 9) vcc rejects this */
const int foo = 10;
}'
}
>>,
changequote([, ])dnl
AC_TRY_LINK(, [$ac_prog], ac_cv_c_const=yes, ac_cv_c_const=no)])dnl
ac_cv_c_const=yes, ac_cv_c_const=no)])dnl
AC_MSG_RESULT($ac_cv_c_const)
if test $ac_cv_c_const = no; then
AC_DEFINE(const, )