From fef0271f589c0cbb1e0467574a77c2f43d582a9e Mon Sep 17 00:00:00 2001
From: Max Lv <max.c.lv@gmail.com>
Date: Thu, 8 Sep 2016 22:22:36 +0800
Subject: [PATCH] Add missing pcre.m4

---
 m4/pcre.m4 | 151 +++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 151 insertions(+)
 create mode 100644 m4/pcre.m4

diff --git a/m4/pcre.m4 b/m4/pcre.m4
new file mode 100644
index 00000000..4123b63b
--- /dev/null
+++ b/m4/pcre.m4
@@ -0,0 +1,151 @@
+dnl -------------------------------------------------------- -*- autoconf -*-
+dnl Licensed to the Apache Software Foundation (ASF) under one or more
+dnl contributor license agreements.  See the NOTICE file distributed with
+dnl this work for additional information regarding copyright ownership.
+dnl The ASF licenses this file to You under the Apache License, Version 2.0
+dnl (the "License"); you may not use this file except in compliance with
+dnl the License.  You may obtain a copy of the License at
+dnl
+dnl     http://www.apache.org/licenses/LICENSE-2.0
+dnl
+dnl Unless required by applicable law or agreed to in writing, software
+dnl distributed under the License is distributed on an "AS IS" BASIS,
+dnl WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+dnl See the License for the specific language governing permissions and
+dnl limitations under the License.
+
+dnl
+dnl TS_ADDTO(variable, value)
+dnl
+dnl  Add value to variable
+dnl
+AC_DEFUN([TS_ADDTO], [
+  if test "x$$1" = "x"; then
+    test "x$verbose" = "xyes" && echo "  setting $1 to \"$2\""
+    $1="$2"
+  else
+    ats_addto_bugger="$2"
+    for i in $ats_addto_bugger; do
+      ats_addto_duplicate="0"
+      for j in $$1; do
+        if test "x$i" = "x$j"; then
+          ats_addto_duplicate="1"
+          break
+        fi
+      done
+      if test $ats_addto_duplicate = "0"; then
+        test "x$verbose" = "xyes" && echo "  adding \"$i\" to $1"
+        $1="$$1 $i"
+      fi
+    done
+  fi
+])dnl
+
+dnl
+dnl TS_ADDTO_RPATH(path)
+dnl
+dnl   Adds path to variable with the '-rpath' directive.
+dnl
+AC_DEFUN([TS_ADDTO_RPATH], [
+  AC_MSG_NOTICE([adding $1 to RPATH])
+  TS_ADDTO(LIBTOOL_LINK_FLAGS, [-R$1])
+])dnl
+
+dnl
+dnl pcre.m4: Trafficserver's pcre autoconf macros
+dnl
+
+dnl
+dnl TS_CHECK_PCRE: look for pcre libraries and headers
+dnl
+AC_DEFUN([TS_CHECK_PCRE], [
+enable_pcre=no
+AC_ARG_WITH(pcre, [AC_HELP_STRING([--with-pcre=DIR],[use a specific pcre library])],
+[
+  if test "x$withval" != "xyes" && test "x$withval" != "x"; then
+    pcre_base_dir="$withval"
+    if test "$withval" != "no"; then
+      enable_pcre=yes
+      case "$withval" in
+      *":"*)
+        pcre_include="`echo $withval |sed -e 's/:.*$//'`"
+        pcre_ldflags="`echo $withval |sed -e 's/^.*://'`"
+        AC_MSG_CHECKING(checking for pcre includes in $pcre_include libs in $pcre_ldflags )
+        ;;
+      *)
+        pcre_include="$withval/include"
+        pcre_ldflags="$withval/lib"
+        AC_MSG_CHECKING(checking for pcre includes in $withval)
+        ;;
+      esac
+    fi
+  fi
+],
+[
+  AC_CHECK_PROG(PCRE_CONFIG, pcre-config, pcre-config)
+  if test "x$PCRE_CONFIG" != "x"; then
+    enable_pcre=yes
+    pcre_base_dir="`$PCRE_CONFIG --prefix`"
+    pcre_include="`$PCRE_CONFIG --cflags | sed -es/-I//`"
+    pcre_ldflags="`$PCRE_CONFIG --libs | sed -es/-lpcre// -es/-L//`"
+  fi
+])
+
+if test "x$pcre_base_dir" = "x"; then
+  AC_MSG_CHECKING([for pcre location])
+  AC_CACHE_VAL(ats_cv_pcre_dir,[
+  for dir in /usr/local /usr ; do
+    if test -d $dir && ( test -f $dir/include/pcre.h || test -f $dir/include/pcre/pcre.h ); then
+      ats_cv_pcre_dir=$dir
+      break
+    fi
+  done
+  ])
+  pcre_base_dir=$ats_cv_pcre_dir
+  if test "x$pcre_base_dir" = "x"; then
+    enable_pcre=no
+    AC_MSG_RESULT([not found])
+  else
+    enable_pcre=yes
+    pcre_include="$pcre_base_dir/include"
+    pcre_ldflags="$pcre_base_dir/lib"
+    AC_MSG_RESULT([$pcre_base_dir])
+  fi
+else
+  AC_MSG_CHECKING(for pcre headers in $pcre_include)
+  if test -d $pcre_include && test -d $pcre_ldflags && ( test -f $pcre_include/pcre.h || test -f $pcre_include/pcre/pcre.h ); then
+    AC_MSG_RESULT([ok])
+  else
+    AC_MSG_RESULT([not found])
+  fi
+fi
+
+pcreh=0
+pcre_pcreh=0
+if test "$enable_pcre" != "no"; then
+  saved_ldflags=$LDFLAGS
+  saved_cppflags=$CFLAGS
+  pcre_have_headers=0
+  pcre_have_libs=0
+  if test "$pcre_base_dir" != "/usr"; then
+    TS_ADDTO(CFLAGS, [-I${pcre_include}])
+    TS_ADDTO(LDFLAGS, [-L${pcre_ldflags}])
+    TS_ADDTO_RPATH(${pcre_ldflags})
+  fi
+  AC_SEARCH_LIBS([pcre_exec], [pcre], [pcre_have_libs=1])
+  if test "$pcre_have_libs" != "0"; then
+    AC_CHECK_HEADERS(pcre.h, [pcre_have_headers=1])
+    AC_CHECK_HEADERS(pcre/pcre.h, [pcre_have_headers=1])
+  fi
+  if test "$pcre_have_headers" != "0"; then
+    AC_DEFINE(HAVE_LIBPCRE,1,[Compiling with pcre support])
+    AC_SUBST(LIBPCRE, [-lpcre])
+  else
+    enable_pcre=no
+    CFLAGS=$saved_cppflags
+    LDFLAGS=$saved_ldflags
+  fi
+fi
+AC_SUBST(pcreh)
+AC_SUBST(pcre_pcreh)
+])