From 1c33ff5bbbbe01373fae440e92a6d7b456a1b25e Mon Sep 17 00:00:00 2001
From: Kostadin Shishmanov <kocelfc@tutanota.com>
Date: Tue, 5 Nov 2024 08:42:13 +0200
Subject: [PATCH] Fix building with LTO on Linux

This fixes the following build failure
when building with CFLAGS="-flto" on Linux

/usr/bin/ld: /tmp/cc9dX2xq.ltrans2.ltrans.o: undefined reference to symbol 'ceil@@GLIBC_2.2.5'
/usr/bin/ld: /usr/lib/libm.so.6: error adding symbols: DSO missing from command line
collect2: error: ld returned 1 exit status

Signed-off-by: Kostadin Shishmanov <kocelfc@tutanota.com>
---
 configure.ac | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/configure.ac b/configure.ac
index 9d71e956..935706f5 100644
--- a/configure.ac
+++ b/configure.ac
@@ -69,7 +69,7 @@ if test "x$ac_cv_have_endian_h" = "xno"; then
   fi
 fi
 
-GLOBAL_CFLAGS="-Wno-multichar -O2"
+GLOBAL_CFLAGS="-Wno-multichar -O2 -lm"
 AC_LDADD=""
 AC_LDFLAGS=""