From 3e4c90bbf43db5d042caf90c44853e359cb603cb Mon Sep 17 00:00:00 2001
From: Luca Boccassi <luca.boccassi@gmail.com>
Date: Wed, 11 Sep 2019 16:02:10 +0100
Subject: [PATCH] Problem: package build fails on SUSE Tumbleweed

Solution: add -ffat-lto-objects if the compiler supports it
---
 configure.ac | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

diff --git a/configure.ac b/configure.ac
index 9511bd72..2abf0a33 100644
--- a/configure.ac
+++ b/configure.ac
@@ -949,6 +949,20 @@ AX_CHECK_COMPILE_FLAG([-Wno-tautological-constant-compare],
     [],
     [-Werror])
 
+# LTO is enabled by default on SUSE Tumbleweed and RPM lint generates an error if
+# the flag is not used to compile archives:
+# E: lto-no-text-in-archive
+AC_LANG_PUSH([C])
+AX_CHECK_COMPILE_FLAG([-ffat-lto-objects],
+    [CFLAGS+=" -ffat-lto-objects"],
+    [],
+    [-Werror])
+AC_LANG_POP([C])
+AX_CHECK_COMPILE_FLAG([-ffat-lto-objects],
+    [CXXFLAGS+=" -ffat-lto-objects"],
+    [],
+    [-Werror])
+
 # Subst LIBZMQ_EXTRA_CFLAGS & CXXFLAGS & LDFLAGS
 AC_SUBST(LIBZMQ_EXTRA_CFLAGS)
 AC_SUBST(LIBZMQ_EXTRA_CXXFLAGS)