mirror of
git://git.sv.gnu.org/autoconf
synced 2024-12-15 02:20:10 +08:00
845 lines
25 KiB
Plaintext
845 lines
25 KiB
Plaintext
changequote()changequote([, ])include(m4sugar/m4sugar.m4)# -*- Autoconf -*-
|
|
# This file is part of Autoconf.
|
|
# M4 sugar for common shell constructs.
|
|
# Requires GNU M4 and M4sugar.
|
|
# Copyright 2000, 2001 Free Software Foundation, Inc.
|
|
#
|
|
# This program is free software; you can redistribute it and/or modify
|
|
# it under the terms of the GNU General Public License as published by
|
|
# the Free Software Foundation; either version 2, or (at your option)
|
|
# any later version.
|
|
#
|
|
# This program is distributed in the hope that it will be useful,
|
|
# but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
# GNU General Public License for more details.
|
|
#
|
|
# You should have received a copy of the GNU General Public License
|
|
# along with this program; if not, write to the Free Software
|
|
# Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
|
|
# 02111-1307, USA.
|
|
#
|
|
# As a special exception, the Free Software Foundation gives unlimited
|
|
# permission to copy, distribute and modify the configure scripts that
|
|
# are the output of Autoconf. You need not follow the terms of the GNU
|
|
# General Public License when using or distributing such scripts, even
|
|
# though portions of the text of Autoconf appear in them. The GNU
|
|
# General Public License (GPL) does govern all other use of the material
|
|
# that constitutes the Autoconf program.
|
|
#
|
|
# Certain portions of the Autoconf source text are designed to be copied
|
|
# (in certain cases, depending on the input) into the output of
|
|
# Autoconf. We call these the "data" portions. The rest of the Autoconf
|
|
# source text consists of comments plus executable code that decides which
|
|
# of the data portions to output in any given case. We call these
|
|
# comments and executable code the "non-data" portions. Autoconf never
|
|
# copies any of the non-data portions into its output.
|
|
#
|
|
# This special exception to the GPL applies to versions of Autoconf
|
|
# released by the Free Software Foundation. When you make and
|
|
# distribute a modified version of Autoconf, you may extend this special
|
|
# exception to the GPL to apply to your modified version as well, *unless*
|
|
# your modified version has the potential to copy into its output some
|
|
# of the text that was the non-data portion of the version that you started
|
|
# with. (In other words, unless your change moves or copies text from
|
|
# the non-data portions to the data portions.) If your modification has
|
|
# such potential, you must delete any notice of this special exception
|
|
# to the GPL from your modified version.
|
|
#
|
|
# Written by Akim Demaille, Pavel Roskin, Alexandre Oliva, Lars J. Aas
|
|
# and many other people.
|
|
|
|
|
|
# We heavily use m4's diversions both for the initializations and for
|
|
# required macros (see m4_require), because in both cases we have to
|
|
# issue high in `configure' something which is discovered late.
|
|
#
|
|
# KILL is only used to suppress output.
|
|
#
|
|
# - BINSH
|
|
# AC_REQUIRE'd #! /bin/sh line
|
|
# - HEADER-REVISION
|
|
# RCS keywords etc.
|
|
# - HEADER-COMMENT
|
|
# Purpose of the script etc.
|
|
# - HEADER-COPYRIGHT
|
|
# Copyright notice(s)
|
|
# - M4SH-INIT
|
|
# M4sh's initializations
|
|
|
|
|
|
|
|
# _m4_divert(DIVERSION-NAME)
|
|
# --------------------------
|
|
# Convert a diversion name into its number. Otherwise, return
|
|
# DIVERSION-NAME which is supposed to be an actual diversion number.
|
|
# Of course it would be nicer to use m4_case here, instead of zillions
|
|
# of little macros, but it then takes twice longer to run `autoconf'!
|
|
m4_define([_m4_divert(BINSH)], 0)
|
|
m4_define([_m4_divert(HEADER-REVISION)], 1)
|
|
m4_define([_m4_divert(HEADER-COMMENT)], 2)
|
|
m4_define([_m4_divert(HEADER-COPYRIGHT)], 3)
|
|
m4_define([_m4_divert(M4SH-INIT)], 4)
|
|
|
|
# Aaarg. Yet it starts with compatibility issues... Libtool wants to
|
|
# use NOTICE to insert its own LIBTOOL-INIT stuff. People should ask
|
|
# before diving into our internals :(
|
|
m4_copy([_m4_divert(M4SH-INIT)], [_m4_divert(NOTICE)])
|
|
|
|
|
|
|
|
## ------------------------- ##
|
|
## 1. Sanitizing the shell. ##
|
|
## ------------------------- ##
|
|
|
|
# AS_SHELL_SANITIZE
|
|
# -----------------
|
|
# Try to be as Bourne and/or POSIX as possible.
|
|
m4_defun([AS_SHELL_SANITIZE],
|
|
[
|
|
## --------------------- ##
|
|
## M4sh Initialization. ##
|
|
## --------------------- ##
|
|
|
|
# Be Bourne compatible
|
|
if test -n "${ZSH_VERSION+set}" && (emulate sh) >/dev/null 2>&1; then
|
|
emulate sh
|
|
NULLCMD=:
|
|
elif test -n "${BASH_VERSION+set}" && (set -o posix) >/dev/null 2>&1; then
|
|
set -o posix
|
|
fi
|
|
|
|
# Name of the executable.
|
|
as_me=`AS_BASENAME($[0])`
|
|
|
|
_AS_ECHO_N_PREPARE
|
|
_AS_EXPR_PREPARE
|
|
_AS_LN_S_PREPARE
|
|
_AS_PATH_SEPARATOR_PREPARE
|
|
_AS_TEST_PREPARE
|
|
_AS_TR_PREPARE
|
|
_AS_UNSET_PREPARE
|
|
|
|
# NLS nuisances.
|
|
AS_UNSET([LANG], [C])
|
|
AS_UNSET([LC_ALL], [C])
|
|
AS_UNSET([LC_TIME], [C])
|
|
AS_UNSET([LC_CTYPE], [C])
|
|
AS_UNSET([LANGUAGE], [C])
|
|
AS_UNSET([LC_COLLATE], [C])
|
|
AS_UNSET([LC_NUMERIC], [C])
|
|
AS_UNSET([LC_MESSAGES], [C])
|
|
|
|
# IFS
|
|
# We need space, tab and new line, in precisely that order.
|
|
as_nl='
|
|
'
|
|
IFS=" $as_nl"
|
|
|
|
# CDPATH.
|
|
AS_UNSET([CDPATH], [$PATH_SEPARATOR])
|
|
])
|
|
|
|
|
|
## ----------------------------- ##
|
|
## 2. Wrappers around builtins. ##
|
|
## ----------------------------- ##
|
|
|
|
# This section is lexicographically sorted.
|
|
|
|
|
|
# AS_EXIT([EXIT-CODE = 1])
|
|
# ------------------------
|
|
# Exit and set exit code to EXIT-CODE in the way that it's seen
|
|
# within "trap 0".
|
|
#
|
|
# We cannot simply use "exit N" because some shells (zsh and Solaris sh)
|
|
# will not set $? to N while running the code set by "trap 0"
|
|
# So we set $? by executing "exit N" in the subshell and then exit.
|
|
# Other shells don't use `$?' as default for `exit', hence just repeating
|
|
# the exit value can only help improving portability.
|
|
m4_define([AS_EXIT],
|
|
[{ (exit m4_default([$1], 1)); exit m4_default([$1], 1); }])
|
|
|
|
|
|
# AS_IF(TEST, [IF-TRUE], [IF-FALSE])
|
|
# ----------------------------------
|
|
# Expand into
|
|
# | if TEST; then
|
|
# | IF-TRUE
|
|
# | else
|
|
# | IF-FALSE
|
|
# | fi
|
|
# with simplifications is IF-TRUE and/or IF-FALSE is empty.
|
|
#
|
|
# FIXME: Be n-ary, just as m4_if.
|
|
m4_define([AS_IF],
|
|
[m4_ifval([$2$3],
|
|
[if $1; then
|
|
m4_ifval([$2], [$2], :)
|
|
m4_ifvaln([$3],
|
|
[else
|
|
$3])dnl
|
|
fi
|
|
])dnl
|
|
])# AS_IF
|
|
|
|
|
|
# _AS_UNSET_PREPARE
|
|
# -----------------
|
|
# AS_UNSET depends upon $as_unset: compute it.
|
|
m4_defun([_AS_UNSET_PREPARE],
|
|
[# Support unset when possible.
|
|
if (FOO=FOO; unset FOO) >/dev/null 2>&1; then
|
|
as_unset=unset
|
|
else
|
|
as_unset=false
|
|
fi
|
|
])
|
|
|
|
|
|
# AS_UNSET(VAR, [VALUE-IF-UNSET-NOT-SUPPORTED = `'])
|
|
# --------------------------------------------------
|
|
# Try to unset the env VAR, otherwise set it to
|
|
# VALUE-IF-UNSET-NOT-SUPPORTED. `as_unset' must have been computed.
|
|
m4_defun([AS_UNSET],
|
|
[m4_require([_AS_UNSET_PREPARE])dnl
|
|
$as_unset $1 || test "${$1+set}" != set || { $1=$2; export $1; }])
|
|
|
|
|
|
|
|
|
|
|
|
|
|
## ------------------------------------------ ##
|
|
## 3. Error and warnings at the shell level. ##
|
|
## ------------------------------------------ ##
|
|
|
|
# If AS_MESSAGE_LOG_FD is defined, shell messages are duplicated there
|
|
# too.
|
|
|
|
|
|
# AS_ESCAPE(STRING, [CHARS = $"'\])
|
|
# ---------------------------------
|
|
# Escape the CHARS in STRING.
|
|
m4_define([AS_ESCAPE],
|
|
[m4_patsubst([$1],
|
|
m4_ifval([$2], [[\([$2]\)]], [[\([\"$`]\)]]),
|
|
[\\\1])])
|
|
|
|
|
|
# _AS_QUOTE_IFELSE(STRING, IF-MODERN-QUOTATION, IF-OLD-QUOTATION)
|
|
# ---------------------------------------------------------------
|
|
# Compatibility glue between the old AS_MSG suite which did not
|
|
# quote anything, and the modern suite which quotes the quotes.
|
|
# If STRING contains `\\' or `\$', it's modern.
|
|
# If STRING contains `\"' or `\`', it's old.
|
|
# Otherwise it's modern.
|
|
# We use two quotes in the pattern to keep highlighting tools at peace.
|
|
m4_define([_AS_QUOTE_IFELSE],
|
|
[m4_match([$1],
|
|
[\\[\\$]], [$2],
|
|
[\\[`""]], [$3],
|
|
[$2])])
|
|
|
|
|
|
# _AS_ECHO_UNQUOTED(STRING, [FD = AS_MESSAGE_FD])
|
|
# -----------------------------------------------
|
|
# Perform shell expansions on STRING and echo the string to FD.
|
|
m4_define([_AS_ECHO_UNQUOTED],
|
|
[echo "$1" >&m4_default([$2], [AS_MESSAGE_FD])])
|
|
|
|
|
|
# _AS_QUOTE(STRING)
|
|
# -----------------
|
|
# If there are quoted (via backslash) backquotes do nothing, else
|
|
# backslash all the quotes.
|
|
# FIXME: In a distant future (2.51 or +), this warning should be
|
|
# classified as `syntax'. It is classified as `obsolete' to ease
|
|
# the transition (for Libtool for instance).
|
|
m4_define([_AS_QUOTE],
|
|
[_AS_QUOTE_IFELSE([$1],
|
|
[AS_ESCAPE([$1], [`""])],
|
|
[m4_warn([obsolete],
|
|
[back quotes and double quotes should not be escaped in: $1])dnl
|
|
$1])])
|
|
|
|
|
|
# _AS_ECHO(STRING, [FD = AS_MESSAGE_FD])
|
|
# --------------------------------------
|
|
# Protect STRING from backquote expansion, echo the result to FD.
|
|
m4_define([_AS_ECHO],
|
|
[_AS_ECHO_UNQUOTED([_AS_QUOTE([$1])], [$2])])
|
|
|
|
|
|
# _AS_ECHO_N_PREPARE
|
|
# ------------------
|
|
# Check whether to use -n, \c, or newline-tab to separate
|
|
# checking messages from result messages.
|
|
# Don't try to cache, since the results of this macro are needed to
|
|
# display the checking message. In addition, caching something used once
|
|
# has little interest.
|
|
# Idea borrowed from dist 3.0. Use `*c*,', not `*c,' because if `\c'
|
|
# failed there is also a new-line to match.
|
|
m4_define([_AS_ECHO_N_PREPARE],
|
|
[case `echo "testing\c"; echo 1,2,3`,`echo -n testing; echo 1,2,3` in
|
|
*c*,-n*) ECHO_N= ECHO_C='
|
|
' ECHO_T=' ' ;;
|
|
*c*,* ) ECHO_N=-n ECHO_C= ECHO_T= ;;
|
|
*) ECHO_N= ECHO_C='\c' ECHO_T= ;;
|
|
esac
|
|
])# _AS_ECHO_N_PREPARE
|
|
|
|
|
|
# _AS_ECHO_N(STRING, [FD = AS_MESSAGE_FD])
|
|
# ----------------------------------------
|
|
# Same as _AS_ECHO, but echo doesn't return to a new line.
|
|
m4_define([_AS_ECHO_N],
|
|
[echo $ECHO_N "_AS_QUOTE([$1])$ECHO_C" >&m4_default([$2],
|
|
[AS_MESSAGE_FD])])
|
|
|
|
|
|
# AS_MESSAGE(STRING, [FD = AS_MESSAGE_FD])
|
|
# ----------------------------------------
|
|
m4_define([AS_MESSAGE],
|
|
[m4_ifset([AS_MESSAGE_LOG_FD],
|
|
[{ _AS_ECHO([$as_me:__oline__: $1], [AS_MESSAGE_LOG_FD])
|
|
_AS_ECHO([$as_me: $1], [$2]);}],
|
|
[_AS_ECHO([$as_me: $1], [$2])])[]dnl
|
|
])
|
|
|
|
|
|
# AS_WARN(PROBLEM)
|
|
# ----------------
|
|
m4_define([AS_WARN],
|
|
[AS_MESSAGE([WARNING: $1], [2])])# AS_WARN
|
|
|
|
|
|
# AS_ERROR(ERROR, [EXIT-STATUS = 1])
|
|
# ----------------------------------
|
|
m4_define([AS_ERROR],
|
|
[{ AS_MESSAGE([error: $1], [2])
|
|
AS_EXIT([$2]); }[]dnl
|
|
])# AS_ERROR
|
|
|
|
|
|
|
|
## -------------------------------------- ##
|
|
## 4. Portable versions of common tools. ##
|
|
## -------------------------------------- ##
|
|
|
|
# This section is lexicographically sorted.
|
|
|
|
|
|
# AS_DIRNAME(PATHNAME)
|
|
# --------------------
|
|
# Simulate running `dirname(1)' on PATHNAME, not all systems have it.
|
|
# This macro must be usable from inside ` `.
|
|
#
|
|
# Prefer expr to echo|sed, since expr is usually faster and it handles
|
|
# backslashes and newlines correctly. However, older expr
|
|
# implementations (e.g. SunOS 4 expr and Solaris 8 /usr/ucb/expr) have
|
|
# a silly length limit that causes expr to fail if the matched
|
|
# substring is longer than 120 bytes. So fall back on echo|sed if
|
|
# expr fails.
|
|
#
|
|
# FIXME: Please note the following m4_require is quite wrong: if the first
|
|
# occurrence of AS_DIRNAME_EXPR is in a backquoted expression, the
|
|
# shell will be lost. We might have to introduce diversions for
|
|
# setting up an M4sh script: required macros will then be expanded there.
|
|
m4_defun([AS_DIRNAME_EXPR],
|
|
[m4_require([_AS_EXPR_PREPARE])dnl
|
|
$as_expr X[]$1 : 'X\(.*[[^/]]\)//*[[^/][^/]]*/*$' \| \
|
|
X[]$1 : 'X\(//\)[[^/]]' \| \
|
|
X[]$1 : 'X\(//\)$' \| \
|
|
X[]$1 : 'X\(/\)' \| \
|
|
. : '\(.\)'])
|
|
|
|
m4_defun([AS_DIRNAME_SED],
|
|
[echo X[]$1 |
|
|
sed ['/^X\(.*[^/]\)\/\/*[^/][^/]*\/*$/{ s//\1/; q; }
|
|
/^X\(\/\/\)[^/].*/{ s//\1/; q; }
|
|
/^X\(\/\/\)$/{ s//\1/; q; }
|
|
/^X\(\/\).*/{ s//\1/; q; }
|
|
s/.*/./; q']])
|
|
|
|
m4_defun([AS_DIRNAME],
|
|
[AS_DIRNAME_EXPR([$1]) 2>/dev/null ||
|
|
AS_DIRNAME_SED([$1])])
|
|
|
|
|
|
# AS_BASENAME(PATHNAME)
|
|
# --------------------
|
|
# Simulate running `basename(1)' on PATHNAME, not all systems have it.
|
|
# This macro must be usable from inside ` `.
|
|
m4_defun([AS_BASENAME_SED],
|
|
[echo "$1" |sed 's,\(.*[[\\/]]\+\)\?\([[^\\/]]\+\)[[\\/]]*,\2,'])
|
|
|
|
m4_defun([AS_BASENAME],
|
|
[AS_BASENAME_SED([$1])])
|
|
|
|
# AS_EXECUTABLE_P
|
|
# ---------------
|
|
# Check whether a file is executable.
|
|
m4_defun([AS_EXECUTABLE_P],
|
|
[m4_require([_AS_TEST_PREPARE])dnl
|
|
$as_executable_p $1[]dnl
|
|
])# AS_EXECUTABLE_P
|
|
|
|
|
|
# _AS_EXPR_PREPARE
|
|
# ----------------
|
|
# Some expr work properly (i.e. compute and issue the right result),
|
|
# but exit with failure. When a fall back to expr (as in AS_DIRNAME)
|
|
# is provided, you get twice the result. Prevent this.
|
|
m4_defun([_AS_EXPR_PREPARE],
|
|
[if expr a : '\(a\)' >/dev/null 2>&1; then
|
|
as_expr=expr
|
|
else
|
|
as_expr=false
|
|
fi
|
|
])# _AS_EXPR_PREPARE
|
|
|
|
|
|
# _AS_LN_S_PREPARE
|
|
# ----------------
|
|
# Don't use conftest.sym to avoid filename issues on DJGPP, where this
|
|
# would yield conftest.sym.exe for DJGPP < 2.04. And don't use `conftest'
|
|
# as base name to avoid prohibiting concurrency (e.g., concurrent
|
|
# config.statuses).
|
|
m4_defun([_AS_LN_S_PREPARE],
|
|
[rm -f conf$$ conf$$.exe conf$$.file
|
|
echo >conf$$.file
|
|
if ln -s conf$$.file conf$$ 2>/dev/null; then
|
|
# We could just check for DJGPP; but this test a) works b) is more generic
|
|
# and c) will remain valid once DJGPP supports symlinks (DJGPP 2.04).
|
|
if test -f conf$$.exe; then
|
|
# Don't use ln at all; we don't have any links
|
|
as_ln_s='cp -p'
|
|
else
|
|
as_ln_s='ln -s'
|
|
fi
|
|
elif ln conf$$.file conf$$ 2>/dev/null; then
|
|
as_ln_s=ln
|
|
else
|
|
as_ln_s='cp -p'
|
|
fi
|
|
rm -f conf$$ conf$$.exe conf$$.file
|
|
])# _AS_LN_S_PREPARE
|
|
|
|
|
|
# _AS_PATH_SEPARATOR_PREPARE
|
|
# --------------------------
|
|
# Compute the path separator.
|
|
m4_define([_AS_PATH_SEPARATOR_PREPARE],
|
|
[# The user is always right.
|
|
if test "${PATH_SEPARATOR+set}" != set; then
|
|
echo "#! $SHELL" >conftest.sh
|
|
echo "exit 0" >>conftest.sh
|
|
chmod +x conftest.sh
|
|
if (PATH=".;."; conftest.sh) >/dev/null 2>&1; then
|
|
PATH_SEPARATOR=';'
|
|
else
|
|
PATH_SEPARATOR=:
|
|
fi
|
|
rm -f conftest.sh
|
|
fi
|
|
])# _AS_PATH_SEPARATOR_PREPARE
|
|
|
|
|
|
# _AS_PATH_WALK([PATH = $PATH], BODY)
|
|
# -----------------------------------
|
|
# Walk through PATH running BODY for each `as_dir'.
|
|
#
|
|
# Still very private as its interface looks quite bad.
|
|
#
|
|
# `$as_dummy' forces splitting on constant user-supplied paths.
|
|
# POSIX.2 word splitting is done only on the output of word
|
|
# expansions, not every word. This closes a longstanding sh security
|
|
# hole. Optimize it away when not needed.
|
|
m4_define([_AS_PATH_WALK],
|
|
[as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
|
|
AS_LITERAL_IF([m4_default([$1], [$PATH])],
|
|
[as_dummy="$1"
|
|
for as_dir in $as_dummy],
|
|
[for as_dir in m4_default([$1], [$PATH])])
|
|
do
|
|
IFS=$as_save_IFS
|
|
test -z "$as_dir" && as_dir=.
|
|
$2
|
|
done
|
|
])
|
|
|
|
|
|
# AS_LN_S(FILE, LINK)
|
|
# -------------------
|
|
# FIXME: Should we add the glue code to handle properly relative symlinks
|
|
# simulated with `ln' or `cp'?
|
|
m4_defun([AS_LN_S],
|
|
[m4_require([_AS_LN_S_PREPARE])dnl
|
|
$as_ln_s $1 $2
|
|
])
|
|
|
|
|
|
# AS_MKDIR_P(PATH)
|
|
# ----------------
|
|
# Emulate `mkdir -p' with plain `mkdir'.
|
|
#
|
|
# Don't set IFS to '\\/' (see the doc): you would end up with
|
|
# directories called foo\bar and foo?az and others depending upon the
|
|
# shell.
|
|
m4_define([AS_MKDIR_P],
|
|
[{ case $1 in
|
|
[[\\/]]* | ?:[[\\/]]* ) as_incr_dir=;;
|
|
*) as_incr_dir=.;;
|
|
esac
|
|
as_dummy=$1
|
|
for as_mkdir_dir in `IFS='/\\'; set X $as_dummy; shift; echo "$[@]"`; do
|
|
case $as_mkdir_dir in
|
|
# Skip DOS drivespec
|
|
?:) as_incr_dir=$as_mkdir_dir ;;
|
|
*)
|
|
as_incr_dir=$as_incr_dir/$as_mkdir_dir
|
|
test -d "$as_incr_dir" ||
|
|
mkdir "$as_incr_dir" ||
|
|
AS_ERROR([cannot create $1])
|
|
;;
|
|
esac
|
|
done; }
|
|
])# AS_MKDIR_P
|
|
|
|
|
|
# _AS_BROKEN_TEST_PREPARE
|
|
# -----------------------
|
|
# FIXME: This does not work and breaks way too many things.
|
|
#
|
|
# Find out ahead of time whether we want test -x (preferred) or test -f
|
|
# to check whether a file is executable.
|
|
m4_defun([_AS_BROKEN_TEST_PREPARE],
|
|
[# Find out how to test for executable files. Don't use a zero-byte file,
|
|
# as systems may use methods other than mode bits to determine executability.
|
|
cat >conf$$.file <<_ASEOF
|
|
@%:@! /bin/sh
|
|
exit 0
|
|
_ASEOF
|
|
chmod +x conf$$.file
|
|
if test -x conf$$.file >/dev/null 2>&1; then
|
|
as_executable_p="test -x"
|
|
elif test -f conf$$.file >/dev/null 2>&1; then
|
|
as_executable_p="test -f"
|
|
else
|
|
AS_ERROR([cannot check whether a file is executable on this system])
|
|
fi
|
|
rm -f conf$$.file
|
|
])# _AS_BROKEN_TEST_PREPARE
|
|
|
|
|
|
# _AS_TEST_PREPARE
|
|
# ----------------
|
|
m4_defun([_AS_TEST_PREPARE],
|
|
[as_executable_p="test -f"
|
|
])# _AS_BROKEN_TEST_PREPARE
|
|
|
|
|
|
|
|
|
|
|
|
|
|
## ------------------ ##
|
|
## 5. Common idioms. ##
|
|
## ------------------ ##
|
|
|
|
# This section is lexicographically sorted.
|
|
|
|
|
|
# AS_BOX(MESSAGE, [FRAME-CHARACTER = `-'])
|
|
# ----------------------------------------
|
|
# Output MESSAGE, a single line text, framed with FRAME-CHARACTER (which
|
|
# must not be `/').
|
|
m4_define([AS_BOX],
|
|
[AS_LITERAL_IF([$1],
|
|
[_AS_BOX_LITERAL($@)],
|
|
[_AS_BOX_INDIR($@)])])
|
|
|
|
# _AS_BOX_LITERAL(MESSAGE, [FRAME-CHARACTER = `-'])
|
|
# -------------------------------------------------
|
|
m4_define([_AS_BOX_LITERAL],
|
|
[cat <<\_ASBOX
|
|
m4_text_box($@)
|
|
_ASBOX])
|
|
|
|
# _AS_BOX_INDIR(MESSAGE, [FRAME-CHARACTER = `-'])
|
|
# -----------------------------------------------
|
|
m4_define([_AS_BOX_INDIR],
|
|
[sed 'h;s/./m4_default([$2], [-])/g;s/^.../@%:@@%:@ /;s/...$/ @%:@@%:@/;p;x;p;x' <<_ASBOX
|
|
@%:@@%:@ $1 @%:@@%:@
|
|
_ASBOX])
|
|
|
|
|
|
# AS_LITERAL_IF(EXPRESSION, IF-LITERAL, IF-NOT-LITERAL)
|
|
# -----------------------------------------------------
|
|
# If EXPRESSION has shell indirections ($var or `expr`), expand
|
|
# IF-INDIR, else IF-NOT-INDIR.
|
|
# This is an *approximation*: for instance EXPRESSION = `\$' is
|
|
# definitely a literal, but will not be recognized as such.
|
|
m4_define([AS_LITERAL_IF],
|
|
[m4_match([$1], [[`$]],
|
|
[$3], [$2])])
|
|
|
|
|
|
# AS_TMPDIR(PREFIX)
|
|
# -----------------
|
|
# Create as safely as possible a temporary directory which name is
|
|
# inspired by PREFIX (should be 2-4 chars max), and set trap
|
|
# mechanisms to remove it.
|
|
m4_define([AS_TMPDIR],
|
|
[# Create a temporary directory, and hook for its removal unless debugging.
|
|
$debug ||
|
|
{
|
|
trap 'exit_status=$?; rm -rf $tmp && exit $exit_status' 0
|
|
trap 'AS_EXIT([1])' 1 2 13 15
|
|
}
|
|
|
|
# Create a (secure) tmp directory for tmp files.
|
|
: ${TMPDIR=/tmp}
|
|
{
|
|
tmp=`(umask 077 && mktemp -d -q "$TMPDIR/$1XXXXXX") 2>/dev/null` &&
|
|
test -n "$tmp" && test -d "$tmp"
|
|
} ||
|
|
{
|
|
tmp=$TMPDIR/$1$$-$RANDOM
|
|
(umask 077 && mkdir $tmp)
|
|
} ||
|
|
{
|
|
echo "$me: cannot create a temporary directory in $TMPDIR" >&2
|
|
AS_EXIT
|
|
}dnl
|
|
])# AS_TMPDIR
|
|
|
|
|
|
# AS_UNAME
|
|
# --------
|
|
# Try to describe this machine. Meant for logs.
|
|
m4_define([AS_UNAME],
|
|
[{
|
|
cat <<_ASUNAME
|
|
m4_text_box([Platform.])
|
|
|
|
hostname = `(hostname || uname -n) 2>/dev/null | sed 1q`
|
|
uname -m = `(uname -m) 2>/dev/null || echo unknown`
|
|
uname -r = `(uname -r) 2>/dev/null || echo unknown`
|
|
uname -s = `(uname -s) 2>/dev/null || echo unknown`
|
|
uname -v = `(uname -v) 2>/dev/null || echo unknown`
|
|
|
|
/usr/bin/uname -p = `(/usr/bin/uname -p) 2>/dev/null || echo unknown`
|
|
/bin/uname -X = `(/bin/uname -X) 2>/dev/null || echo unknown`
|
|
|
|
/bin/arch = `(/bin/arch) 2>/dev/null || echo unknown`
|
|
/usr/bin/arch -k = `(/usr/bin/arch -k) 2>/dev/null || echo unknown`
|
|
/usr/convex/getsysinfo = `(/usr/convex/getsysinfo) 2>/dev/null || echo unknown`
|
|
hostinfo = `(hostinfo) 2>/dev/null || echo unknown`
|
|
/bin/machine = `(/bin/machine) 2>/dev/null || echo unknown`
|
|
/usr/bin/oslevel = `(/usr/bin/oslevel) 2>/dev/null || echo unknown`
|
|
/bin/universe = `(/bin/universe) 2>/dev/null || echo unknown`
|
|
|
|
_ASUNAME
|
|
|
|
_AS_PATH_WALK([$PATH], [echo "PATH: $as_dir"])
|
|
}])
|
|
|
|
|
|
|
|
## ------------------------------------ ##
|
|
## Common m4/sh character translation. ##
|
|
## ------------------------------------ ##
|
|
|
|
# The point of this section is to provide high level macros comparable
|
|
# to m4's `translit' primitive, but m4/sh polymorphic.
|
|
# Transliteration of literal strings should be handled by m4, while
|
|
# shell variables' content will be translated at runtime (tr or sed).
|
|
|
|
|
|
# _AS_CR_PREPARE
|
|
# --------------
|
|
# Output variables defining common character ranges.
|
|
# See m4_cr_letters etc.
|
|
m4_defun([_AS_CR_PREPARE],
|
|
[# Avoid depending upon Character Ranges.
|
|
as_cr_letters='abcdefghijklmnopqrstuvwxyz'
|
|
as_cr_LETTERS='ABCDEFGHIJKLMNOPQRSTUVWXYZ'
|
|
as_cr_Letters=$as_cr_letters$as_cr_LETTERS
|
|
as_cr_digits='0123456789'
|
|
as_cr_alnum=$as_cr_Letters$as_cr_digits
|
|
])
|
|
|
|
|
|
# _AS_TR_SH_PREPARE
|
|
# -----------------
|
|
m4_defun([_AS_TR_SH_PREPARE],
|
|
[m4_require([_AS_CR_PREPARE])dnl
|
|
# Sed expression to map a string onto a valid variable name.
|
|
as_tr_sh="sed y%*+%pp%;s%[[^_$as_cr_alnum]]%_%g"
|
|
])
|
|
|
|
|
|
# AS_TR_SH(EXPRESSION)
|
|
# --------------------
|
|
# Transform EXPRESSION into a valid shell variable name.
|
|
# sh/m4 polymorphic.
|
|
# Be sure to update the definition of `$as_tr_sh' if you change this.
|
|
m4_defun([AS_TR_SH],
|
|
[m4_require([_$0_PREPARE])dnl
|
|
AS_LITERAL_IF([$1],
|
|
[m4_patsubst(m4_translit([[$1]], [*+], [pp]),
|
|
[[^a-zA-Z0-9_]], [_])],
|
|
[`echo "$1" | $as_tr_sh`])])
|
|
|
|
|
|
# _AS_TR_CPP_PREPARE
|
|
# ------------------
|
|
m4_defun([_AS_TR_CPP_PREPARE],
|
|
[m4_require([_AS_CR_PREPARE])dnl
|
|
# Sed expression to map a string onto a valid CPP name.
|
|
as_tr_cpp="sed y%*$as_cr_letters%P$as_cr_LETTERS%;s%[[^_$as_cr_alnum]]%_%g"
|
|
])
|
|
|
|
|
|
# AS_TR_CPP(EXPRESSION)
|
|
# ---------------------
|
|
# Map EXPRESSION to an upper case string which is valid as rhs for a
|
|
# `#define'. sh/m4 polymorphic. Be sure to update the definition
|
|
# of `$as_tr_cpp' if you change this.
|
|
m4_defun([AS_TR_CPP],
|
|
[m4_require([_$0_PREPARE])dnl
|
|
AS_LITERAL_IF([$1],
|
|
[m4_patsubst(m4_translit([[$1]],
|
|
[*abcdefghijklmnopqrstuvwxyz],
|
|
[PABCDEFGHIJKLMNOPQRSTUVWXYZ]),
|
|
[[^A-Z0-9_]], [_])],
|
|
[`echo "$1" | $as_tr_cpp`])])
|
|
|
|
|
|
# _AS_TR_PREPARE
|
|
# --------------
|
|
m4_defun([_AS_TR_PREPARE],
|
|
[m4_require([_AS_TR_SH_PREPARE])dnl
|
|
m4_require([_AS_TR_CPP_PREPARE])dnl
|
|
])
|
|
|
|
|
|
|
|
|
|
## --------------------------------------------------- ##
|
|
## Common m4/sh handling of variables (indirections). ##
|
|
## --------------------------------------------------- ##
|
|
|
|
|
|
# The purpose of this section is to provide a uniform API for
|
|
# reading/setting sh variables with or without indirection.
|
|
# Typically, one can write
|
|
# AS_VAR_SET(var, val)
|
|
# or
|
|
# AS_VAR_SET(as_$var, val)
|
|
# and expect the right thing to happen.
|
|
|
|
|
|
# AS_VAR_SET(VARIABLE, VALUE)
|
|
# ---------------------------
|
|
# Set the VALUE of the shell VARIABLE.
|
|
# If the variable contains indirections (e.g. `ac_cv_func_$ac_func')
|
|
# perform whenever possible at m4 level, otherwise sh level.
|
|
m4_define([AS_VAR_SET],
|
|
[AS_LITERAL_IF([$1],
|
|
[$1=$2],
|
|
[eval "$1=$2"])])
|
|
|
|
|
|
# AS_VAR_GET(VARIABLE)
|
|
# --------------------
|
|
# Get the value of the shell VARIABLE.
|
|
# Evaluates to $VARIABLE if there are no indirection in VARIABLE,
|
|
# else into the appropriate `eval' sequence.
|
|
m4_define([AS_VAR_GET],
|
|
[AS_LITERAL_IF([$1],
|
|
[$$1],
|
|
[`eval echo '${'m4_patsubst($1, [[\\`]], [\\\&])'}'`])])
|
|
|
|
|
|
# AS_VAR_TEST_SET(VARIABLE)
|
|
# -------------------------
|
|
# Expands into the `test' expression which is true if VARIABLE
|
|
# is set. Polymorphic. Should be dnl'ed.
|
|
m4_define([AS_VAR_TEST_SET],
|
|
[AS_LITERAL_IF([$1],
|
|
[test "${$1+set}" = set],
|
|
[eval "test \"\${$1+set}\" = set"])])
|
|
|
|
|
|
# AS_VAR_SET_IF(VARIABLE, IF-TRUE, IF-FALSE)
|
|
# ------------------------------------------
|
|
# Implement a shell `if-then-else' depending whether VARIABLE is set
|
|
# or not. Polymorphic.
|
|
m4_define([AS_VAR_SET_IF],
|
|
[AS_IF([AS_VAR_TEST_SET([$1])], [$2], [$3])])
|
|
|
|
|
|
# AS_VAR_PUSHDEF and AS_VAR_POPDEF
|
|
# --------------------------------
|
|
#
|
|
|
|
# Sometimes we may have to handle literals (e.g. `stdlib.h'), while at
|
|
# other moments, the same code may have to get the value from a
|
|
# variable (e.g., `ac_header'). To have a uniform handling of both
|
|
# cases, when a new value is about to be processed, declare a local
|
|
# variable, e.g.:
|
|
#
|
|
# AS_VAR_PUSHDEF([header], [ac_cv_header_$1])
|
|
#
|
|
# and then in the body of the macro, use `header' as is. It is of
|
|
# first importance to use `AS_VAR_*' to access this variable. Don't
|
|
# quote its name: it must be used right away by m4.
|
|
#
|
|
# If the value `$1' was a literal (e.g. `stdlib.h'), then `header' is
|
|
# in fact the value `ac_cv_header_stdlib_h'. If `$1' was indirect,
|
|
# then `header's value in m4 is in fact `$ac_header', the shell
|
|
# variable that holds all of the magic to get the expansion right.
|
|
#
|
|
# At the end of the block, free the variable with
|
|
#
|
|
# AS_VAR_POPDEF([header])
|
|
|
|
|
|
# AS_VAR_PUSHDEF(VARNAME, VALUE)
|
|
# ------------------------------
|
|
# Define the m4 macro VARNAME to an accessor to the shell variable
|
|
# named VALUE. VALUE does not need to be a valid shell variable name:
|
|
# the transliteration is handled here. To be dnl'ed.
|
|
m4_define([AS_VAR_PUSHDEF],
|
|
[AS_LITERAL_IF([$2],
|
|
[m4_pushdef([$1], [AS_TR_SH($2)])],
|
|
[as_$1=AS_TR_SH($2)
|
|
m4_pushdef([$1], [$as_[$1]])])])
|
|
|
|
|
|
# AS_VAR_POPDEF(VARNAME)
|
|
# ----------------------
|
|
# Free the shell variable accessor VARNAME. To be dnl'ed.
|
|
m4_define([AS_VAR_POPDEF],
|
|
[m4_popdef([$1])])
|
|
|
|
|
|
|
|
## ----------------- ##
|
|
## Setting M4sh up. ##
|
|
## ----------------- ##
|
|
|
|
|
|
# AS_INIT
|
|
# -------
|
|
m4_define([AS_INIT],
|
|
[m4_init
|
|
|
|
# Forbidden tokens and exceptions.
|
|
m4_pattern_forbid([^_?AS_])
|
|
])
|