From cd9e814fc88a9d2c2ba427fef950cebbae2f6edb Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Jannik=20Gl=C3=BCckert?= <jannik.glueckert@gmail.com>
Date: Wed, 22 Jun 2022 13:15:39 +0200
Subject: [PATCH] flag-o-matic.eclass: add filter-lto function
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Bug: https://bugs.gentoo.org/618550
Closes: https://github.com/gentoo/gentoo/pull/26036
Signed-off-by: Jannik Glückert <jannik.glueckert@gmail.com>
Signed-off-by: Sam James <sam@gentoo.org>
---
 eclass/flag-o-matic.eclass | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/eclass/flag-o-matic.eclass b/eclass/flag-o-matic.eclass
index 50caa401bacfb..0e15d7423547c 100644
--- a/eclass/flag-o-matic.eclass
+++ b/eclass/flag-o-matic.eclass
@@ -218,6 +218,14 @@ filter-lfs-flags() {
 	filter-flags -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE -D_TIME_BITS=64
 }
 
+# @FUNCTION: filter-lto
+# @DESCRIPTION:
+# Remove flags that enable LTO and those that depend on it
+filter-lto() {
+	[[ $# -ne 0 ]] && die "filter-lto takes no arguments"
+	filter-flags '-flto*' -fwhole-program-vtables '-fsanitize=cfi*'
+}
+
 # @FUNCTION: filter-ldflags
 # @USAGE: <flags>
 # @DESCRIPTION: