From 5b62287f982be281c5d436b556051d09c1c348d2 Mon Sep 17 00:00:00 2001
From: Frank Denis <github@pureftpd.org>
Date: Sat, 5 Dec 2015 17:56:42 +0100
Subject: [PATCH] Add a --enable-opt compile-time switch

---
 configure.ac | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/configure.ac b/configure.ac
index 303fb072..ca17614d 100644
--- a/configure.ac
+++ b/configure.ac
@@ -135,6 +135,14 @@ AC_ARG_ENABLE(debug,
   ])
 ])
 
+AC_ARG_ENABLE(opt,
+[AS_HELP_STRING(--enable-opt,Optimize for the native CPU - The resulting library will be faster but not portable)],
+[
+  AS_IF([test "x$enableval" = "xyes"], [
+    CFLAGS="$CFLAGS -flto -march=native"
+    LDFLAGS="$LDFLAGS -flto -march=native"])
+])
+
 AC_SUBST([MAINT])
 
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