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## $Id: pcre.m4,v 1.15 2004/05/30 03:56:14 daniel Exp $
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## Copyright (c) 2002 Daniel Elstner <daniel.elstner@gmx.net>
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## This program is free software; you can redistribute it and/or modify
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## it under the terms of the GNU General Public License VERSION 2 as
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## published by the Free Software Foundation. You are not allowed to
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## use any other version of the license; unless you got the explicit
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## permission from the author to do so.
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## This program is distributed in the hope that it will be useful,
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## but WITHOUT ANY WARRANTY; without even the implied warranty of
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## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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## GNU General Public License for more details.
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## You should have received a copy of the GNU General Public License
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## along with this program; if not, write to the Free Software
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## Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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## PCRE_CHECK_VERSION(min_version)
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## Run pcre-config to determine the libpcre version number and
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## bail out if it is insufficient. Also retrieve the necessary
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## compiler flags and store them in PCRE_CFLAGS rpt. PCRE_LIBS.
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AC_DEFUN([PCRE_CHECK_VERSION],
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m4_if([$1],, [AC_FATAL([argument required])])
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AC_ARG_VAR([PCRE_CONFIG], [path to pcre-config script])
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AC_PATH_PROG([PCRE_CONFIG], [pcre-config])
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AS_IF([test "x$PCRE_CONFIG" = x],
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*** pcre-config is missing. Please install your distribution's
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*** libpcre development package and then try again.
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AC_MSG_CHECKING([[for libpcre >= ]$1])
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pcre_version_string=`$PCRE_CONFIG --version 2>&5`
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d='@<:@0123456789@:>@'
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pcre_transform='s/^\('$d$d'*\)\.\('$d$d'*\)\.*\('$d'*\).*$/\1 \\* 1000000 + \2 \\* 1000 + 0\3/p'
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pcre_required=`echo "$1" | sed -n "$pcre_transform" 2>&5`
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pcre_version=`echo "$pcre_version_string" | sed -n "$pcre_transform" 2>&5`
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AS_IF([eval "expr $pcre_version \\>= $pcre_required" >/dev/null 2>&5],
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[pcre_version_ok=yes],
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AC_MSG_RESULT([${pcre_version_ok}])
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AS_IF([test "x$pcre_version_ok" = xno],
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*** libpcre ]$1[ or higher is required, but you only have
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*** version $pcre_version_string installed. Please upgrade and try again.
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AC_MSG_CHECKING([[PCRE_CFLAGS]])
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PCRE_CFLAGS=`$PCRE_CONFIG --cflags | sed 's,-I/usr/include$,,;s,-I/usr/include ,,g' 2>&5`
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AC_MSG_RESULT([${PCRE_CFLAGS}])
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AC_SUBST([PCRE_CFLAGS])
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AC_MSG_CHECKING([[PCRE_LIBS]])
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PCRE_LIBS=`$PCRE_CONFIG --libs | sed 's,-L/usr/lib$,,;s,-L/usr/lib ,,g' 2>&5`
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AC_MSG_RESULT([${PCRE_LIBS}])
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## Run a test program to determine whether PCRE was compiled with
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## UTF-8 support. If it wasn't, bail out with an error message.
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AC_DEFUN([PCRE_CHECK_UTF8],
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AC_REQUIRE([PCRE_CHECK_VERSION])
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[whether libpcre was compiled with UTF-8 support],
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[pcre_cv_has_utf8_support],
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pcre_saved_CPPFLAGS=$CPPFLAGS
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CPPFLAGS="$CPPFLAGS $PCRE_CFLAGS"
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LIBS="$LIBS $PCRE_LIBS"
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const char* errmessage = NULL;
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if (pcre_compile(".", PCRE_UTF8, &errmessage, &erroffset, NULL))
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fprintf(stderr, "%s\n", errmessage);
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[pcre_cv_has_utf8_support=yes],
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[pcre_cv_has_utf8_support=no],
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[pcre_cv_has_utf8_support="cross compile: assuming yes"])
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CPPFLAGS=$pcre_saved_CPPFLAGS
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LIBS=$pcre_saved_LIBS
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AS_IF([test "x$pcre_cv_has_utf8_support" = xno],
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*** Sorry, the PCRE library installed on your system doesn't support
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*** UTF-8 encoding. Please install a libpcre package which includes
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*** support for UTF-8. Note that if you compile libpcre from source
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*** you have to pass the --enable-utf8 flag to its ./configure script.
added
removed
macros/pcre.m4
