From a64a253794ac64cb40befee54db53bde17dd0d49 Mon Sep 17 00:00:00 2001
From: Daniel Baumann <daniel.baumann@progress-linux.org>
Date: Wed, 7 Nov 2018 13:19:29 +0100
Subject: New upstream version 1.11.0+dfsg

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
---
 build/m4/ax_c_lto.m4 | 21 +++++++++++++++++++++
 1 file changed, 21 insertions(+)
 create mode 100644 build/m4/ax_c_lto.m4

(limited to 'build/m4/ax_c_lto.m4')

diff --git a/build/m4/ax_c_lto.m4 b/build/m4/ax_c_lto.m4
new file mode 100644
index 000000000..7e6bc0119
--- /dev/null
+++ b/build/m4/ax_c_lto.m4
@@ -0,0 +1,21 @@
+# AC_C_LTO
+# -------------
+# Define HAVE_LTO if -flto works.
+AN_IDENTIFIER([lto], [AC_C_LTO])
+AC_DEFUN([AC_C_LTO],
+[AC_CACHE_CHECK([if -flto builds executables], ac_cv_c_lto,
+[AC_RUN_IFELSE(
+   [AC_LANG_SOURCE(
+      [[#include <stdio.h>
+        int main(int argc, char **argv) {
+          return 0;
+        }
+      ]])],
+   [ac_cv_c_lto=yes],
+   [ac_cv_c_lto=no],
+   [ac_cv_c_lto=${ac_cv_c_lto_cross_compile}])])
+if test "${ac_cv_c_lto}" = "yes"; then
+  AC_DEFINE([HAVE_LTO], 1,
+           [Define to 1 if -flto works.])
+fi
+])# AC_C_LTO
-- 
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