@@ -67,10 +67,21 @@ else

 fi

 llvmver_val=`echo "$llvmver" | sed -e 's/svn//g'`

-llvmver_sval=`echo "$llvmver_val" | sed -re 's/[[0-9]]+//' | sed -e 's/^\.//'`

-llvmver_major=`echo "$llvmver_val"  | sed -re 's/([[0-9]]+).*/\1/'`

-llvmver_minor=`echo "$llvmver_sval" | sed -re 's/([[0-9]]+).*/\1/'`

-llvmver_patch=`echo "$llvmver_sval" | sed -re 's/[[0-9]]+//' | sed -e 's/^\.//' | sed -re 's/([[0-9]]+).*/\1/'`

+AC_CANONICAL_HOST

+case $host_os in

+  darwin* )

+    llvmver_sval=`echo "$llvmver_val" | sed -Ee 's/[[0-9]]+//' | sed -e 's/^\.//'`

+    llvmver_major=`echo "$llvmver_val"  | sed -Ee 's/([[0-9]]+).*/\1/'`

+    llvmver_minor=`echo "$llvmver_sval" | sed -Ee 's/([[0-9]]+).*/\1/'`

+    llvmver_patch=`echo "$llvmver_sval" | sed -Ee 's/[[0-9]]+//' | sed -e 's/^\.//' | sed -Ee 's/([[0-9]]+).*/\1/'`

+    ;;

+  *)

+    llvmver_sval=`echo "$llvmver_val" | sed -re 's/[[0-9]]+//' | sed -e 's/^\.//'`

+    llvmver_major=`echo "$llvmver_val"  | sed -re 's/([[0-9]]+).*/\1/'`

+    llvmver_minor=`echo "$llvmver_sval" | sed -re 's/([[0-9]]+).*/\1/'`

+    llvmver_patch=`echo "$llvmver_sval" | sed -re 's/[[0-9]]+//' | sed -e 's/^\.//' | sed -re 's/([[0-9]]+).*/\1/'`

+    ;;

+esac

 dnl suffix unused as of LLVM 3.4.1

 llvmver_suffix=

 if test "x$llvmver_patch" = "x"; then

@@ -54,8 +54,17 @@ if test "x$pcreconfig" != "x"; then

     fi

     AC_MSG_RESULT([$pcre_version])

-    pcrever_major=`echo "$pcre_version" | sed -re 's/([[0-9]]+).*/\1/'`

-    pcrever_minor=`echo "$pcre_version" | sed -re 's/[[0-9]]+\.([[0-9]]+).*/\1/'`

+    AC_CANONICAL_HOST

+    case $host_os in

+      darwin* )

+        pcrever_major=`echo "$pcre_version" | sed -Ee 's/([[0-9]]+).*/\1/'`

+        pcrever_minor=`echo "$pcre_version" | sed -Ee 's/[[0-9]]+\.([[0-9]]+).*/\1/'`

+        ;;

+      *)

+        pcrever_major=`echo "$pcre_version" | sed -re 's/([[0-9]]+).*/\1/'`

+        pcrever_minor=`echo "$pcre_version" | sed -re 's/[[0-9]]+\.([[0-9]]+).*/\1/'`

+        ;;

+    esac

     dnl check for match_limit_recursion support

     if test "$pcrelib" = "pcre"; then