From 917a1a92d342646bbc54444c8c7eb9626a821fa3 Mon Sep 17 00:00:00 2001
From: Radostin Stoyanov <rstoyanov@fedoraproject.org>
Date: Wed, 2 Feb 2022 11:37:03 +0000
Subject: [PATCH] Fix build with GCC 12

Signed-off-by: Radostin Stoyanov <rstoyanov@fedoraproject.org>
---
 criu.spec | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/criu.spec b/criu.spec
index b053156..275939b 100644
--- a/criu.spec
+++ b/criu.spec
@@ -385,6 +385,11 @@ This script can help to workaround the so called "PID mismatch" problem.
 # that is fixed, disable LTO.
 %define _lto_cflags %{nil}
 
+# With GCC 12 the build fails with:
+#   Unexpected undefined symbol: `strlen'. External symbol in PIE?
+# '-ffreestanding' makes the compilation work with GCC 12.
+CFLAGS+=" -ffreestanding "
+
 # %{?_smp_mflags} does not work
 # -fstack-protector breaks build
 CFLAGS+=`echo %{optflags} | sed -e 's,-fstack-protector\S*,,g'` make V=1 WERROR=0 PREFIX=%{_prefix} RUNDIR=/run/criu PYTHON=%{py_binary}