1 files changed, 69 insertions, 0 deletions
diff --git a/m4.include/ax_path_lib_pcre.m4 b/m4.include/ax_path_lib_pcre.m4
new file mode 100644
index 0000000..5355dd7
--- /dev/null
+++ b/m4.include/ax_path_lib_pcre.m4
@@ -0,0 +1,69 @@
+# ===========================================================================
+#     https://www.gnu.org/software/autoconf-archive/ax_path_lib_pcre.html
+# ===========================================================================
+#
+# SYNOPSIS
+#
+#   AX_PATH_LIB_PCRE [(A/NA)]
+#
+# DESCRIPTION
+#
+#   check for pcre lib and set PCRE_LIBS and PCRE_CFLAGS accordingly.
+#
+#   also provide --with-pcre option that may point to the $prefix of the
+#   pcre installation - the macro will check $pcre/include and $pcre/lib to
+#   contain the necessary files.
+#
+#   the usual two ACTION-IF-FOUND / ACTION-IF-NOT-FOUND are supported and
+#   they can take advantage of the LIBS/CFLAGS additions.
+#
+# LICENSE
+#
+#   Copyright (c) 2008 Guido U. Draheim <guidod@gmx.de>
+#
+#   Copying and distribution of this file, with or without modification, are
+#   permitted in any medium without royalty provided the copyright notice
+#   and this notice are preserved.  This file is offered as-is, without any
+#   warranty.
+
+#serial 9
+
+AC_DEFUN([AX_PATH_LIB_PCRE],[dnl
+AC_MSG_CHECKING([lib pcre])
+AC_ARG_WITH(pcre,
+[  --with-pcre[[=prefix]]    compile xmlpcre part (via libpcre check)],,
+     with_pcre="yes")
+if test ".$with_pcre" = ".no" ; then
+  AC_MSG_RESULT([disabled])
+  m4_ifval($2,$2)
+else
+  AC_MSG_RESULT([(testing)])
+  AC_CHECK_LIB(pcre, pcre_study)
+  if test "$ac_cv_lib_pcre_pcre_study" = "yes" ; then
+     PCRE_LIBS="-lpcre"
+     AC_MSG_CHECKING([lib pcre])
+     AC_MSG_RESULT([$PCRE_LIBS])
+     m4_ifval($1,$1)
+  else
+     OLDLDFLAGS="$LDFLAGS" ; LDFLAGS="$LDFLAGS -L$with_pcre/lib"
+     OLDCPPFLAGS="$CPPFLAGS" ; CPPFLAGS="$CPPFLAGS -I$with_pcre/include"
+     AC_CHECK_LIB(pcre, pcre_compile)
+     CPPFLAGS="$OLDCPPFLAGS"
+     LDFLAGS="$OLDLDFLAGS"
+     if test "$ac_cv_lib_pcre_pcre_compile" = "yes" ; then
+        AC_MSG_RESULT(.setting PCRE_LIBS -L$with_pcre/lib -lpcre)
+        PCRE_LIBS="-L$with_pcre/lib -lpcre"
+        test -d "$with_pcre/include" && PCRE_CFLAGS="-I$with_pcre/include"
+        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
+  fi
+fi
+AC_SUBST([PCRE_LIBS])
+AC_SUBST([PCRE_CFLAGS])
+])