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configure: use XC_CONFIGURE_PREAMBLE early checks

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Some basic checks we make were placed early enough in generated
configure script when using autoconf 2.5X versions. Newer autoconf
versions expand these checks much further into the configure script,
rendering them useless. Using XC_CONFIGURE_PREAMBLE fixes placement
of early intended checks across all our autoconf supported versions.
This commit is contained in:
Yang Tse 2013-01-23 13:54:08 +01:00
parent 8c6c42a67f
commit 5c28a64e57
3 changed files with 2 additions and 106 deletions
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3
configure.ac
View File

@ -26,6 +26,7 @@ AC_PREREQ(2.57)
dnl We don't know the version number "statically" so we use a dash here
AC_INIT([curl], [-], [a suitable curl mailing list: http://curl.haxx.se/mail/])
XC_OVR_ZZ40
XC_OVR_ZZ50
XC_OVR_ZZ60
CURL_OVERRIDE_AUTOCONF
@ -48,8 +49,6 @@ CURL_CHECK_OPTION_CURLDEBUG
CURL_CHECK_OPTION_SYMBOL_HIDING
CURL_CHECK_OPTION_ARES
CURL_CHECK_PATH_SEPARATOR_REQUIRED
#
# save the configure arguments
#

17
m4/curl-override.m4
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@ -2,7 +2,7 @@
#***************************************************************************
# File version for 'aclocal' use. Keep it a single number.
# serial 6
# serial 7
dnl CURL_OVERRIDE_AUTOCONF
dnl -------------------------------------------------
@ -74,18 +74,3 @@ choke me
#endif
], [return $1 ();])])
dnl Override Autoconf's PATH_SEPARATOR check
dnl -------------------------------------------------
dnl This is done to ensure that the same check is
dnl used across different Autoconf versions and to
dnl allow us to use this macro early enough in the
dnl configure script.
m4_defun([_AS_PATH_SEPARATOR_PREPARE],
[CURL_CHECK_PATH_SEPARATOR
m4_define([$0],[])])
m4_defun([_LT_AC_LIBTOOL_SYS_PATH_SEPARATOR],
[CURL_CHECK_PATH_SEPARATOR
m4_define([$0],[])])

88
m4/curl-system.m4
View File

@ -1,88 +0,0 @@
#***************************************************************************
# _ _ ____ _
# Project ___| | | | _ \| |
# / __| | | | |_) | |
# | (__| |_| | _ <| |___
# \___|\___/|_| \_\_____|
#
# Copyright (C) 1998 - 2009, Daniel Stenberg, <daniel@haxx.se>, et al.
#
# This software is licensed as described in the file COPYING, which
# you should have received as part of this distribution. The terms
# are also available at http://curl.haxx.se/docs/copyright.html.
#
# You may opt to use, copy, modify, merge, publish, distribute and/or sell
# copies of the Software, and permit persons to whom the Software is
# furnished to do so, under the terms of the COPYING file.
#
# This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
# KIND, either express or implied.
#
#***************************************************************************
# File version for 'aclocal' use. Keep it a single number.
# serial 3
dnl CURL_CHECK_PATH_SEPARATOR
dnl -------------------------------------------------
dnl Check and compute the path separator for us. This
dnl path separator is the symbol used to diferentiate
dnl or separate paths inside the PATH environment var.
AC_DEFUN([CURL_CHECK_PATH_SEPARATOR], [
if test -z "$curl_cv_PATH_SEPARATOR"; then
if test -z "$PATH"; then
AC_MSG_ERROR([PATH not set. Cannot continue without PATH being set.])
fi
dnl Directory count in PATH when using a colon separator.
tst_dirs_col=0
tst_save_IFS=$IFS; IFS=':'
for tst_dir in $PATH; do
IFS=$tst_save_IFS
test -d "$tst_dir" && tst_dirs_col=`expr $tst_dirs_col + 1`
done
IFS=$tst_save_IFS
dnl Directory count in PATH when using a semicolon separator.
tst_dirs_sem=0
tst_save_IFS=$IFS; IFS=';'
for tst_dir in $PATH; do
IFS=$tst_save_IFS
test -d "$tst_dir" && tst_dirs_sem=`expr $tst_dirs_sem + 1`
done
IFS=$tst_save_IFS
if test $tst_dirs_sem -eq $tst_dirs_col; then
dnl When both counting methods give the same result we do not want to
dnl chose one over the other, and consider auto-detection not possible.
if test -z "$PATH_SEPARATOR"; then
dnl Stop dead until user provides PATH_SEPARATOR definition.
AC_MSG_ERROR([PATH_SEPARATOR not set. Cannot continue without it.])
fi
else
dnl Separator with the greater directory count is the auto-detected one.
if test $tst_dirs_sem -gt $tst_dirs_col; then
tst_auto_separator=';'
else
tst_auto_separator=':'
fi
if test -z "$PATH_SEPARATOR"; then
dnl Simply use the auto-detected one when not already set.
PATH_SEPARATOR="$tst_auto_separator"
fi
fi
curl_cv_PATH_SEPARATOR="$PATH_SEPARATOR"
fi
AC_SUBST([PATH_SEPARATOR])
AC_SUBST([PATH])
])
dnl CURL_CHECK_PATH_SEPARATOR_REQUIRED
dnl -------------------------------------------------
dnl Use this to ensure that the path separator check
dnl macro is only expanded and included once.
AC_DEFUN([CURL_CHECK_PATH_SEPARATOR_REQUIRED], [
AC_REQUIRE([CURL_CHECK_PATH_SEPARATOR])dnl
])