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1999-09-22 Akim Demaille <akim@epita.fr>

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* install.texi: Give emore details on envvar handling.
        * acgeneral.m4 (AC_HELP_STRING): Add a third argument to tune the
        width of the first column.
        (AC_INIT_NOTICE): Initialize ac_arg_enable_help, ac_arg_with_help,
        and ac_arg_var_help.
        * acgeneral.m4 (AC_INIT_PARSE_ARGS): Remove the handling of
        --env-var=.  After debate, the solution chosen to specify envvars
        to configure is a` la make: ./configure VAR=VAL.
        (AC_INIT_PARSE_ARGS, --help): Output ac_arg_enable_help,
        ac_arg_with_help, and ac_arg_var_help.
        * acgeneral.m4 (AC_ARG_VAR): New macro, to register and document
        influent envvars.
        * acspecific.m4 (AC_PROG_CC): Document CFLAGS.
        This is mainly to test AC_ARG_VAR.  Var to document are to be
        defined.
This commit is contained in:
Akim Demaille 1999-09-23 09:49:56 +00:00
parent e819cbd112
commit 76906a83b0
11 changed files with 214 additions and 121 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

18
ChangeLog
View File

@ -1,3 +1,21 @@
1999-09-22 Akim Demaille <akim@epita.fr>
* install.texi: Give emore details on envvar handling.
* acgeneral.m4 (AC_HELP_STRING): Add a third argument to tune the
width of the first column.
(AC_INIT_NOTICE): Initialize ac_arg_enable_help, ac_arg_with_help,
and ac_arg_var_help.
* acgeneral.m4 (AC_INIT_PARSE_ARGS): Remove the handling of
--env-var=. After debate, the solution chosen to specify envvars
to configure is a` la make: ./configure VAR=VAL.
(AC_INIT_PARSE_ARGS, --help): Output ac_arg_enable_help,
ac_arg_with_help, and ac_arg_var_help.
* acgeneral.m4 (AC_ARG_VAR): New macro, to register and document
influent envvars.
* acspecific.m4 (AC_PROG_CC): Document CFLAGS.
This is mainly to test AC_ARG_VAR. Var to document are to be
defined.
1999-09-22 Akim Demaille <akim@epita.fr>
* acgeneral.m4 (m4_default): New macro.

15
INSTALL
View File

@ -55,12 +55,19 @@ Compilers and Options
=====================
Some systems require unusual options for compilation or linking that
the `configure' script does not know about. You can give `configure'
initial values for variables by setting them in the environment. Using
a Bourne-compatible shell, you can do that on the command line like
this:
the `configure' script does not know about. Run `./configure --help'
for details on some of the pertinent environment variables.
You can give `configure' initial values for variables by setting
them in the environment. You can do that on the command line like this:
./configure CC=c89 CFLAGS=-O2 LIBS=-lposix
Please, note that the former interface:
CC=c89 CFLAGS=-O2 LIBS=-lposix ./configure
or
env CC=c89 CFLAGS=-O2 LIBS=-lposix ./configure
is deprecated and should be avoided.
Compiling For Multiple Architectures
====================================

108
acgeneral.m4
View File

@ -529,12 +529,14 @@ popdef([ac_width])dnl
popdef([ac_cursor])])
dnl AC_HELP_STRING(LHS, RHS)
dnl ------------------------
dnl AC_HELP_STRING(LHS, RHS[, COLUMN])
dnl ----------------------------------
dnl
dnl Format an Autoconf macro's help string so that it looks pretty when
dnl the user executes "configure --help". This macro takes two
dnl arguments, a "left hand side" (LHS), and a "right hand side" (RHS).
dnl the user executes "configure --help". This macro takes three
dnl arguments, a "left hand side" (LHS), a "right hand side" (RHS), and
dnl the COLUMN which is a string of wide spaces which leads to the
dnl the RHS column (default: 26 white spaces).
dnl
dnl The resulting string is suitable for use in other macros that require
dnl a help string (e.g. AC_ARG_WITH).
@ -570,23 +572,28 @@ dnl column 0 column 26
dnl
dnl This macro is a adhoc version of AC_WRAP.
define([AC_HELP_STRING],
[pushdef([ac_prefix], [ ])dnl 26 spaces
pushdef([ac_width], m4_eval(79 - len(ac_prefix)))dnl
pushdef([ac_cursor], 0)dnl
m4_format([ %-23s ], [$1])dnl
[pushdef([AC_Prefix], m4_default([$3], [ ]))dnl
pushdef([AC_Prefix_Len], len(AC_Prefix))dnl Default: 26
pushdef([AC_Prefix_Format], [ %-]m4_eval(len(AC_Prefix) - 3)[s])dnl [ %-23s]
pushdef([AC_Width], m4_eval(79 - AC_Prefix_Len))dnl Width of the RHS column.
pushdef([AC_Cursor], 0)dnl
m4_format(AC_Prefix_Format, [$1])dnl
dnl If the option is too wide, leave it alone on the line
ifelse(m4_eval(len(m4_format([ %-23s ], [$1])) > 26),
ifelse(m4_eval(len(m4_format(AC_Prefix_Format, [$1])) > AC_Prefix_Len),
1, [
]ac_prefix)dnl
AC_FOREACH([ac_word], $2,
[define([ac_cursor], m4_eval(ac_cursor + len(ac_word) + 1))dnl
ifelse(m4_eval(ac_cursor > ac_width),
1, [define([ac_cursor], m4_eval(len(ac_word) + 1))]
ac_prefix)dnl
ac_word ])dnl
popdef([ac_prefix])dnl
popdef([ac_width])dnl
popdef([ac_cursor])])
]AC_Prefix)dnl
AC_FOREACH([AC_Word], $2,
[define([AC_Cursor], m4_eval(AC_Cursor + len(AC_Word) + 1))dnl
ifelse(m4_eval(AC_Cursor > AC_Width),
1, [define([AC_Cursor], m4_eval(len(AC_Word) + 1))]
AC_Prefix)dnl
AC_Word ])dnl
popdef([AC_Cursor])dnl
popdef([AC_Width])dnl
popdef([AC_Prefix_Format])dnl
popdef([AC_Prefix_Len])dnl
popdef([AC_Prefix])dnl
])
@ -603,7 +610,9 @@ AC_DEFUN(AC_INIT_NOTICE,
# gives unlimited permission to copy, distribute and modify it.
# Defaults:
ac_help=
ac_arg_with_help=
ac_arg_enable_help=
ac_arg_var_help=
ac_default_prefix=/usr/local
[#] Any additions from configure.in:])
@ -738,21 +747,6 @@ changequote([, ])dnl
esac
eval "enable_${ac_feature}='$ac_optarg'" ;;
-env-* | --env-*)
ac_envvar=`echo $ac_option|sed -e 's/^-*env-//' -e 's/=.*//'`
# Reject names that are not valid shell variable names.
changequote(, )dnl
if test -n "`echo $ac_envvar| sed 's/[_a-zA-Z0-9]//g'`"; then
changequote([, ])dnl
AC_MSG_ERROR($ac_envvar: invalid variable name)
fi
case "$ac_option" in
*=*) ;;
*) AC_MSG_ERROR($ac_envvar: missing value) ;;
esac
eval "${ac_envvar}='$ac_optarg'"
export $ac_envvar ;;
-exec-prefix | --exec_prefix | --exec-prefix | --exec-prefi \
| --exec-pref | --exec-pre | --exec-pr | --exec-p | --exec- \
| --exec | --exe | --ex)
@ -783,7 +777,6 @@ Defaults for the options are specified in brackets.
Configuration:
--cache-file=FILE cache test results in FILE
[--env-]VAR=VALUE set environment variable VAR to VALUE
--help print this message
--no-create do not create output files
--quiet, --silent do not print \`checking...' messages
@ -832,9 +825,19 @@ Features and packages:
--x-libraries=DIR X library files are in DIR
EOF
changequote([, ])dnl
if test -n "$ac_help"; then
dnl It would be great to sort, unfortunately, since each entry maybe
dnl split on several lines, it is not as evident as a simple `| sort'.
if test -n "$ac_arg_enable_help"; then
echo "
--enable and --with options recognized:$ac_help"
--enable options recognized:$ac_arg_enable_help"
fi
if test -n "$ac_arg_with_help"; then
echo "
--with options recognized:$ac_arg_with_help"
fi
if test -n "$ac_arg_var_help"; then
echo "
Some of the influent environment variables:$ac_arg_var_help"
fi
exit 0 ;;
@ -1243,7 +1246,7 @@ dnl AC_ARG_ENABLE(FEATURE, HELP-STRING, ACTION-IF-TRUE [, ACTION-IF-FALSE])
dnl -----------------------------------------------------------------------
AC_DEFUN(AC_ARG_ENABLE,
[AC_DIVERT_PUSH(AC_DIVERSION_NOTICE)dnl
ac_help="$ac_help
ac_arg_enable_help="$ac_arg_enable_help
[$2]"
AC_DIVERT_POP()dnl
[#] Check whether --enable-[$1] or --disable-[$1] was given.
@ -1268,7 +1271,7 @@ dnl ### Working with optional software
dnl AC_ARG_WITH(PACKAGE, HELP-STRING, ACTION-IF-TRUE [, ACTION-IF-FALSE])
AC_DEFUN(AC_ARG_WITH,
[AC_DIVERT_PUSH(AC_DIVERSION_NOTICE)dnl
ac_help="$ac_help
ac_arg_with_help="$ac_arg_with_help
[$2]"
AC_DIVERT_POP()dnl
[#] Check whether --with-[$1] or --without-[$1] was given.
@ -1288,6 +1291,27 @@ AC_ARG_WITH([$1], [ --with-$1], [$2], [$3])dnl
dnl ### Remembering env vars for reconfiguring
dnl AC_ARG_VAR(VARNAME, DOCUMENTATION)
dnl ----------------------------------
dnl Register VARNAME as a variable configure should remember, and
dnl document it in --help.
AC_DEFUN(AC_ARG_VAR,
[AC_DIVERT_PUSH(AC_DIVERSION_NOTICE)dnl
ac_arg_var_help="$ac_arg_var_help
AC_HELP_STRING([$1], [$2], [ ])"
AC_DIVERT_POP()dnl
dnl Prepend instead of appending, so that envvars set on the cmd line
dnl win over the environment. Don't register envvars not set.
dnl Don't register several times.
case "${$1+set} $ac_configure_args" in
*" $1="* );;
"set "*) ac_configure_args="$1='[$]$1' $ac_configure_args";;
esac])
dnl ### Transforming program names.
@ -2474,8 +2498,8 @@ AC_SHELL_IFELSE(test AC_VAR_GET(ac_var) = yes,
AC_VAR_POPDEF([ac_var])dnl
])dnl AC_CHECK_DECL
dnl AC_CHECK_DECL(SYMBOL... , [, INCLUDES,
dnl [ACTION-IF-FOUND [, ACTION-IF-NOT-FOUND]]])
dnl AC_CHECK_DECLS(SYMBOL... , [, INCLUDES,
dnl [ACTION-IF-FOUND [, ACTION-IF-NOT-FOUND]]])
AC_DEFUN(AC_CHECK_DECLS,
[for ac_sym in $1
do

1
acspecific.m4
View File

@ -76,6 +76,7 @@ dnl just gives the user an opportunity to specify an alternative search
dnl list for the C compiler.
AC_DEFUN(AC_PROG_CC,
[AC_BEFORE([$0], [AC_PROG_CPP])dnl
AC_ARG_VAR([CFLAGS], [Extra flags for the C compiler])
ifelse([$1], ,
[
AC_CHECK_PROG(CC, gcc, gcc)

2
autoconf.texi
View File

@ -376,7 +376,7 @@ systems that lack them. Work is in progress to add those features in
the future.
Autoconf imposes some restrictions on the names of macros used with
@code{#ifdef} in C programs (@pxref{Preprocessor Symbol Index}).
@code{#if} in C programs (@pxref{Preprocessor Symbol Index}).
Autoconf requires GNU @code{m4} in order to generate the scripts. It
uses features that some UNIX versions of @code{m4} do not have. It also

38
configure vendored
View File

@ -8,7 +8,9 @@
# gives unlimited permission to copy, distribute and modify it.
# Defaults:
ac_help=
ac_arg_with_help=
ac_arg_enable_help=
ac_arg_var_help=
ac_default_prefix=/usr/local
# Any additions from configure.in:
@ -121,19 +123,6 @@ do
esac
eval "enable_${ac_feature}='$ac_optarg'" ;;
-env-* | --env-*)
ac_envvar=`echo $ac_option|sed -e 's/^-*env-//' -e 's/=.*//'`
# Reject names that are not valid shell variable names.
if test -n "`echo $ac_envvar| sed 's/[_a-zA-Z0-9]//g'`"; then
{ echo "configure: error: $ac_envvar: invalid variable name" 1>&2; exit 1; }
fi
case "$ac_option" in
*=*) ;;
*) { echo "configure: error: $ac_envvar: missing value" 1>&2; exit 1; } ;;
esac
eval "${ac_envvar}='$ac_optarg'"
export $ac_envvar ;;
-exec-prefix | --exec_prefix | --exec-prefix | --exec-prefi \
| --exec-pref | --exec-pre | --exec-pr | --exec-p | --exec- \
| --exec | --exe | --ex)
@ -163,7 +152,6 @@ Defaults for the options are specified in brackets.
Configuration:
--cache-file=FILE cache test results in FILE
[--env-]VAR=VALUE set environment variable VAR to VALUE
--help print this message
--no-create do not create output files
--quiet, --silent do not print \`checking...' messages
@ -211,9 +199,17 @@ Features and packages:
--x-includes=DIR X include files are in DIR
--x-libraries=DIR X library files are in DIR
EOF
if test -n "$ac_help"; then
if test -n "$ac_arg_enable_help"; then
echo "
--enable and --with options recognized:$ac_help"
--enable options recognized:$ac_arg_enable_help"
fi
if test -n "$ac_arg_with_help"; then
echo "
--with options recognized:$ac_arg_with_help"
fi
if test -n "$ac_arg_var_help"; then
echo "
Some of the influent environment variables:$ac_arg_var_help"
fi
exit 0 ;;
@ -587,7 +583,7 @@ do
# Extract the first word of "$ac_prog", so it can be a program name with args.
set dummy $ac_prog; ac_word=$2
echo $ac_n "checking for $ac_word... $ac_c" 1>&6
echo "configure:591: checking for $ac_word" 1>&5
echo "configure:587: checking for $ac_word" 1>&5
if test "${ac_cv_path_M4+set}" = set; then
echo $ac_n "(cached) $ac_c" 1>&6
else
@ -628,7 +624,7 @@ do
# Extract the first word of "$ac_prog", so it can be a program name with args.
set dummy $ac_prog; ac_word=$2
echo $ac_n "checking for $ac_word... $ac_c" 1>&6
echo "configure:632: checking for $ac_word" 1>&5
echo "configure:628: checking for $ac_word" 1>&5
if test "${ac_cv_prog_AWK+set}" = set; then
echo $ac_n "(cached) $ac_c" 1>&6
else
@ -661,7 +657,7 @@ done
# Extract the first word of "perl", so it can be a program name with args.
set dummy perl; ac_word=$2
echo $ac_n "checking for $ac_word... $ac_c" 1>&6
echo "configure:665: checking for $ac_word" 1>&5
echo "configure:661: checking for $ac_word" 1>&5
if test "${ac_cv_path_PERL+set}" = set; then
echo $ac_n "(cached) $ac_c" 1>&6
else
@ -731,7 +727,7 @@ ac_configure="$SHELL $ac_aux_dir/configure" # This should be Cygnus configure.
# SVR4 /usr/ucb/install, which tries to use the nonexistent group "staff"
# ./install, which can be erroneously created by make from ./install.sh.
echo $ac_n "checking for a BSD compatible install... $ac_c" 1>&6
echo "configure:735: checking for a BSD compatible install" 1>&5
echo "configure:731: checking for a BSD compatible install" 1>&5
if test -z "$INSTALL"; then
if test "${ac_cv_path_install+set}" = set; then
echo $ac_n "(cached) $ac_c" 1>&6

2
doc/autoconf.texi
View File

@ -376,7 +376,7 @@ systems that lack them. Work is in progress to add those features in
the future.
Autoconf imposes some restrictions on the names of macros used with
@code{#ifdef} in C programs (@pxref{Preprocessor Symbol Index}).
@code{#if} in C programs (@pxref{Preprocessor Symbol Index}).
Autoconf requires GNU @code{m4} in order to generate the scripts. It
uses features that some UNIX versions of @code{m4} do not have. It also

21
doc/install.texi
View File

@ -67,15 +67,26 @@ other programs in order to regenerate files that came with the distribution.
@node Compilers and Options
@section Compilers and Options
Some systems require unusual options for compilation or linking that
the @code{configure} script does not know about. You can give
@code{configure} initial values for variables by setting them in the
environment. Using a Bourne-compatible shell, you can do that on the
command line like this:
Some systems require unusual options for compilation or linking that the
@code{configure} script does not know about. Run @samp{./configure
--help} for details on some of the pertinent environment variables.
You can give @code{configure} initial values for variables by setting
them in the environment. You can do that on the command line like this:
@example
./configure CC=c89 CFLAGS=-O2 LIBS=-lposix
@end example
Please, note that the former interface:
@example
CC=c89 CFLAGS=-O2 LIBS=-lposix ./configure
@end example
or
@example
env CC=c89 CFLAGS=-O2 LIBS=-lposix ./configure
@end example
is deprecated and should be avoided.
@node Multiple Architectures
@section Compiling For Multiple Architectures

21
install.texi
View File

@ -67,15 +67,26 @@ other programs in order to regenerate files that came with the distribution.
@node Compilers and Options
@section Compilers and Options
Some systems require unusual options for compilation or linking that
the @code{configure} script does not know about. You can give
@code{configure} initial values for variables by setting them in the
environment. Using a Bourne-compatible shell, you can do that on the
command line like this:
Some systems require unusual options for compilation or linking that the
@code{configure} script does not know about. Run @samp{./configure
--help} for details on some of the pertinent environment variables.
You can give @code{configure} initial values for variables by setting
them in the environment. You can do that on the command line like this:
@example
./configure CC=c89 CFLAGS=-O2 LIBS=-lposix
@end example
Please, note that the former interface:
@example
CC=c89 CFLAGS=-O2 LIBS=-lposix ./configure
@end example
or
@example
env CC=c89 CFLAGS=-O2 LIBS=-lposix ./configure
@end example
is deprecated and should be avoided.
@node Multiple Architectures
@section Compiling For Multiple Architectures

108
lib/autoconf/general.m4
View File

@ -529,12 +529,14 @@ popdef([ac_width])dnl
popdef([ac_cursor])])
dnl AC_HELP_STRING(LHS, RHS)
dnl ------------------------
dnl AC_HELP_STRING(LHS, RHS[, COLUMN])
dnl ----------------------------------
dnl
dnl Format an Autoconf macro's help string so that it looks pretty when
dnl the user executes "configure --help". This macro takes two
dnl arguments, a "left hand side" (LHS), and a "right hand side" (RHS).
dnl the user executes "configure --help". This macro takes three
dnl arguments, a "left hand side" (LHS), a "right hand side" (RHS), and
dnl the COLUMN which is a string of wide spaces which leads to the
dnl the RHS column (default: 26 white spaces).
dnl
dnl The resulting string is suitable for use in other macros that require
dnl a help string (e.g. AC_ARG_WITH).
@ -570,23 +572,28 @@ dnl column 0 column 26
dnl
dnl This macro is a adhoc version of AC_WRAP.
define([AC_HELP_STRING],
[pushdef([ac_prefix], [ ])dnl 26 spaces
pushdef([ac_width], m4_eval(79 - len(ac_prefix)))dnl
pushdef([ac_cursor], 0)dnl
m4_format([ %-23s ], [$1])dnl
[pushdef([AC_Prefix], m4_default([$3], [ ]))dnl
pushdef([AC_Prefix_Len], len(AC_Prefix))dnl Default: 26
pushdef([AC_Prefix_Format], [ %-]m4_eval(len(AC_Prefix) - 3)[s])dnl [ %-23s]
pushdef([AC_Width], m4_eval(79 - AC_Prefix_Len))dnl Width of the RHS column.
pushdef([AC_Cursor], 0)dnl
m4_format(AC_Prefix_Format, [$1])dnl
dnl If the option is too wide, leave it alone on the line
ifelse(m4_eval(len(m4_format([ %-23s ], [$1])) > 26),
ifelse(m4_eval(len(m4_format(AC_Prefix_Format, [$1])) > AC_Prefix_Len),
1, [
]ac_prefix)dnl
AC_FOREACH([ac_word], $2,
[define([ac_cursor], m4_eval(ac_cursor + len(ac_word) + 1))dnl
ifelse(m4_eval(ac_cursor > ac_width),
1, [define([ac_cursor], m4_eval(len(ac_word) + 1))]
ac_prefix)dnl
ac_word ])dnl
popdef([ac_prefix])dnl
popdef([ac_width])dnl
popdef([ac_cursor])])
]AC_Prefix)dnl
AC_FOREACH([AC_Word], $2,
[define([AC_Cursor], m4_eval(AC_Cursor + len(AC_Word) + 1))dnl
ifelse(m4_eval(AC_Cursor > AC_Width),
1, [define([AC_Cursor], m4_eval(len(AC_Word) + 1))]
AC_Prefix)dnl
AC_Word ])dnl
popdef([AC_Cursor])dnl
popdef([AC_Width])dnl
popdef([AC_Prefix_Format])dnl
popdef([AC_Prefix_Len])dnl
popdef([AC_Prefix])dnl
])
@ -603,7 +610,9 @@ AC_DEFUN(AC_INIT_NOTICE,
# gives unlimited permission to copy, distribute and modify it.
# Defaults:
ac_help=
ac_arg_with_help=
ac_arg_enable_help=
ac_arg_var_help=
ac_default_prefix=/usr/local
[#] Any additions from configure.in:])
@ -738,21 +747,6 @@ changequote([, ])dnl
esac
eval "enable_${ac_feature}='$ac_optarg'" ;;
-env-* | --env-*)
ac_envvar=`echo $ac_option|sed -e 's/^-*env-//' -e 's/=.*//'`
# Reject names that are not valid shell variable names.
changequote(, )dnl
if test -n "`echo $ac_envvar| sed 's/[_a-zA-Z0-9]//g'`"; then
changequote([, ])dnl
AC_MSG_ERROR($ac_envvar: invalid variable name)
fi
case "$ac_option" in
*=*) ;;
*) AC_MSG_ERROR($ac_envvar: missing value) ;;
esac
eval "${ac_envvar}='$ac_optarg'"
export $ac_envvar ;;
-exec-prefix | --exec_prefix | --exec-prefix | --exec-prefi \
| --exec-pref | --exec-pre | --exec-pr | --exec-p | --exec- \
| --exec | --exe | --ex)
@ -783,7 +777,6 @@ Defaults for the options are specified in brackets.
Configuration:
--cache-file=FILE cache test results in FILE
[--env-]VAR=VALUE set environment variable VAR to VALUE
--help print this message
--no-create do not create output files
--quiet, --silent do not print \`checking...' messages
@ -832,9 +825,19 @@ Features and packages:
--x-libraries=DIR X library files are in DIR
EOF
changequote([, ])dnl
if test -n "$ac_help"; then
dnl It would be great to sort, unfortunately, since each entry maybe
dnl split on several lines, it is not as evident as a simple `| sort'.
if test -n "$ac_arg_enable_help"; then
echo "
--enable and --with options recognized:$ac_help"
--enable options recognized:$ac_arg_enable_help"
fi
if test -n "$ac_arg_with_help"; then
echo "
--with options recognized:$ac_arg_with_help"
fi
if test -n "$ac_arg_var_help"; then
echo "
Some of the influent environment variables:$ac_arg_var_help"
fi
exit 0 ;;
@ -1243,7 +1246,7 @@ dnl AC_ARG_ENABLE(FEATURE, HELP-STRING, ACTION-IF-TRUE [, ACTION-IF-FALSE])
dnl -----------------------------------------------------------------------
AC_DEFUN(AC_ARG_ENABLE,
[AC_DIVERT_PUSH(AC_DIVERSION_NOTICE)dnl
ac_help="$ac_help
ac_arg_enable_help="$ac_arg_enable_help
[$2]"
AC_DIVERT_POP()dnl
[#] Check whether --enable-[$1] or --disable-[$1] was given.
@ -1268,7 +1271,7 @@ dnl ### Working with optional software
dnl AC_ARG_WITH(PACKAGE, HELP-STRING, ACTION-IF-TRUE [, ACTION-IF-FALSE])
AC_DEFUN(AC_ARG_WITH,
[AC_DIVERT_PUSH(AC_DIVERSION_NOTICE)dnl
ac_help="$ac_help
ac_arg_with_help="$ac_arg_with_help
[$2]"
AC_DIVERT_POP()dnl
[#] Check whether --with-[$1] or --without-[$1] was given.
@ -1288,6 +1291,27 @@ AC_ARG_WITH([$1], [ --with-$1], [$2], [$3])dnl
dnl ### Remembering env vars for reconfiguring
dnl AC_ARG_VAR(VARNAME, DOCUMENTATION)
dnl ----------------------------------
dnl Register VARNAME as a variable configure should remember, and
dnl document it in --help.
AC_DEFUN(AC_ARG_VAR,
[AC_DIVERT_PUSH(AC_DIVERSION_NOTICE)dnl
ac_arg_var_help="$ac_arg_var_help
AC_HELP_STRING([$1], [$2], [ ])"
AC_DIVERT_POP()dnl
dnl Prepend instead of appending, so that envvars set on the cmd line
dnl win over the environment. Don't register envvars not set.
dnl Don't register several times.
case "${$1+set} $ac_configure_args" in
*" $1="* );;
"set "*) ac_configure_args="$1='[$]$1' $ac_configure_args";;
esac])
dnl ### Transforming program names.
@ -2474,8 +2498,8 @@ AC_SHELL_IFELSE(test AC_VAR_GET(ac_var) = yes,
AC_VAR_POPDEF([ac_var])dnl
])dnl AC_CHECK_DECL
dnl AC_CHECK_DECL(SYMBOL... , [, INCLUDES,
dnl [ACTION-IF-FOUND [, ACTION-IF-NOT-FOUND]]])
dnl AC_CHECK_DECLS(SYMBOL... , [, INCLUDES,
dnl [ACTION-IF-FOUND [, ACTION-IF-NOT-FOUND]]])
AC_DEFUN(AC_CHECK_DECLS,
[for ac_sym in $1
do

1
lib/autoconf/specific.m4
View File

@ -76,6 +76,7 @@ dnl just gives the user an opportunity to specify an alternative search
dnl list for the C compiler.
AC_DEFUN(AC_PROG_CC,
[AC_BEFORE([$0], [AC_PROG_CPP])dnl
AC_ARG_VAR([CFLAGS], [Extra flags for the C compiler])
ifelse([$1], ,
[
AC_CHECK_PROG(CC, gcc, gcc)