mc/m4.include/ax_path_lib_pcre.m4

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dnl @synopsis AX_PATH_LIB_PCRE [(A/NA)]
dnl
dnl check for pcre lib and set PCRE_LIBS and PCRE_CPPFLAGS accordingly.
dnl
dnl also provide --with-pcre option that may point to the $prefix of
dnl the pcre installation - the macro will check $pcre/include and
dnl $pcre/lib to contain the necessary files.
dnl
dnl the usual two ACTION-IF-FOUND / ACTION-IF-NOT-FOUND are supported
dnl and they can take advantage of the LIBS/CFLAGS additions.
dnl
dnl @author Guido U. Draheim <guidod@gmx.de>
dnl @author Slava Zanko <slavazanko@gmail.com>
dnl @version 2009-07-06
dnl @license GPLWithACException
AC_DEFUN([AX_PATH_LIB_PCRE],[dnl
AC_MSG_CHECKING([lib pcre])
AC_ARG_WITH([pcre],
AS_HELP_STRING([--with-pcre@<:@=prefix@:>@], [Compile pcre part (via libpcre check)]),
,
[with_pcre="yes"]
)
if test x"$with_pcre" = "xno" ; then
AC_MSG_RESULT([disabled])
m4_ifval($2,$2)
else
AC_MSG_RESULT([(testing)])
if test "x$with_pcre" = "xyes" ; then
PCRE_CPPFLAGS="`pcre-config --cflags`"
PCRE_LIBS="`pcre-config --libs`"
else
test_PCRE_LIBS="-L$with_pcre/lib"
test_PCRE_CPPFLAGS="-I$with_pcre/include"
OLDLDFLAGS="$LDFLAGS" ; LDFLAGS="$LDFLAGS $test_PCRE_LIBS"
OLDCPPFLAGS="$CPPFLAGS" ; CPPFLAGS="$CPPFLAGS $test_PCRE_CPPFLAGS"
AC_CHECK_LIB(pcre, pcre_compile)
if test x"$ac_cv_lib_pcre_pcre_compile" = x"yes" ; then
AC_MSG_RESULT(setting PCRE_LIBS -L$with_pcre/lib -lpcre)
PCRE_LIBS=$test_PCRE_LIBS
PCRE_CPPFLAGS=$test_PCRE_CPPFLAGS
AC_MSG_CHECKING([lib pcre])
AC_MSG_RESULT([$PCRE_LIBS])
m4_ifval($1,$1)
else
AC_MSG_CHECKING([lib pcre])
AC_MSG_RESULT([no, (WARNING)])
m4_ifval($2,$2)
fi
CPPFLAGS="$OLDCFPPLAGS"
LDFLAGS="$OLDLDFLAGS"
fi
fi
AC_SUBST([PCRE_LIBS])
AC_SUBST([PCRE_CPPFLAGS])
])