| 1 | # pcre.m4 - check for libpcre support
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| 2 | # serial 1
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| 3 |
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| 4 | # Copyright (C) 2010-2012 Free Software Foundation, Inc.
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| 5 | # This file is free software; the Free Software Foundation
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| 6 | # gives unlimited permission to copy and/or distribute it,
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| 7 | # with or without modifications, as long as this notice is preserved.
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| 8 |
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| 9 | AC_DEFUN([gl_FUNC_PCRE],
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| 10 | [
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| 11 | AC_ARG_ENABLE([perl-regexp],
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| 12 | AC_HELP_STRING([--disable-perl-regexp],
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| 13 | [disable perl-regexp (pcre) support]),
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| 14 | [case $enableval in
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| 15 | yes|no) test_pcre=$enableval;;
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| 16 | *) AC_MSG_ERROR([invalid value $enableval for --disable-perl-regexp]);;
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| 17 | esac],
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| 18 | [test_pcre=yes])
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| 19 |
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| 20 | LIB_PCRE=
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| 21 | AC_SUBST([LIB_PCRE])
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| 22 | use_pcre=no
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| 23 |
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| 24 | if test x"$test_pcre" = x"yes"; then
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| 25 | AC_CHECK_HEADERS([pcre.h])
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| 26 | AC_CHECK_HEADERS([pcre/pcre.h])
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| 27 | if test $ac_cv_header_pcre_h = yes \
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| 28 | || test $ac_cv_header_pcre_pcre_h = yes; then
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| 29 | pcre_saved_LIBS=$LIBS
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| 30 | AC_SEARCH_LIBS([pcre_compile], [pcre],
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| 31 | [test "$ac_cv_search_pcre_compile" = "none required" ||
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| 32 | LIB_PCRE=$ac_cv_search_pcre_compile])
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| 33 | AC_CHECK_FUNCS([pcre_compile])
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| 34 | LIBS=$pcre_saved_LIBS
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| 35 | if test $ac_cv_func_pcre_compile = yes; then
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| 36 | use_pcre=yes
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| 37 | fi
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| 38 | fi
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| 39 | if test $use_pcre = no; then
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| 40 | AC_MSG_WARN([libpcre development library was not found or not usable.])
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| 41 | AC_MSG_WARN([AC_PACKAGE_NAME will be built without pcre support.])
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| 42 | fi
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| 43 | fi
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| 44 |
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| 45 | AC_DEFINE_UNQUOTED([HAVE_LIBPCRE], [`test $use_pcre != yes; echo $?`],
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| 46 | [Define to 1 if you have the `pcre' library (-lpcre).])
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| 47 | ])
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