From 0cd78b9ec7e4ee310c4d64d8de4195cfded1fb63 Mon Sep 17 00:00:00 2001
From: Debian BOINC Maintainers <pkg-boinc-devel@lists.alioth.debian.org>
Date: Thu, 17 May 2018 09:09:59 +0100
Subject: [PATCH] introduce_lto

===================================================================

Gbp-Pq: Name introduce_lto.patch
---
 m4/optimizations.m4 | 18 ++++++++++++++++++
 1 file changed, 18 insertions(+)

diff --git a/m4/optimizations.m4 b/m4/optimizations.m4
index 3f127c4..69120c5 100644
--- a/m4/optimizations.m4
+++ b/m4/optimizations.m4
@@ -45,6 +45,24 @@ if test x_$enable_sse = x_yes ; then
   fi
 fi
 
+AC_ARG_ENABLE([lto],
+    AC_HELP_STRING([--enable-lto],
+       [Use Link Time Optimizations])
+)
+
+if test x_$enable_lto = x_yes ; then
+  AC_DEFINE_UNQUOTED([USE_LTO],[1],
+    [Define to 1 to learn that LTO was enabled])
+# put compiler specific flags here
+  if test x_$ac_cv_c_compiler_gnu = x_yes ; then
+    CFLAGS="-flto ${CFLAGS}"
+    LD=gcc
+    LDFLAGS="-flto ${LDFLAGS}"
+    AR=gcc-ar
+    RANLIB=gcc-ranlib
+  fi
+fi
+
 AC_ARG_ENABLE([mmx],
     AC_HELP_STRING([--enable-mmx],
        [Use MMX optimizations])
-- 
2.30.2