Add support for using standard regular expression library.

1 files changed, 16 insertions, 8 deletions

diff --git a/configure.in b/configure.in
index b4d83d2..fbaa423 100644
--- a/configure.in
+++ b/configure.in
@@ -19,21 +19,29 @@ AC_ARG_ENABLE(debug,
         [Compile binaries in debug mode]))
 
 if test "$enable_debug" = "yes"; then
-  CFLAGS="$CFLAGS -g -O0 -Wall"
-  AC_DEFINE_UNQUOTED(_DEBUG, 1, [In debug mode])
-  echo "enabling debug compile mode"
+    CFLAGS="$CFLAGS -g -O0 -Wall"
+    AC_DEFINE_UNQUOTED(_DEBUG, 1, [In debug mode])
+    echo "enabling debug compile mode"
 fi
 
 # Some checks for libraries
 AC_CHECK_LIB(bsnmp, snmp_close, , 
     [echo "Couldn't find the bsnmp library"; exit 1])
-AC_CHECK_LIB(pcre, pcre_compile, , 
-    [echo "Couldn't find the pcre library"; exit 1])
-    
+
 # Checks for header files.
 AC_HEADER_STDC
-AC_CHECK_HEADERS("pcre.h", , 
-    [echo "Couldn't find pcre headers"; exit 1])
+
+AC_ARG_ENABLE(pcre,
+        AC_HELP_STRING([--with-pcre],
+        [Use PCRE instead of the default regular expression library]))
+        
+if test "$enable_pcre" = "yes"; then
+    AC_CHECK_LIB(pcre, pcre_compile, , 
+        [echo "Couldn't find the pcre library"; exit 1])
+    AC_CHECK_HEADERS("pcre.h", , 
+        [echo "Couldn't find pcre headers"; exit 1])
+    AC_DEFINE_UNQUOTED(WITH_PCRE, 1, [Use PCRE regular expression library])
+fi
 
 # Checks for typedefs, structures, and compiler characteristics.
 AC_C_CONST