From 7957a7652b5a3001daaac5419fbd4bb07749fb6c Mon Sep 17 00:00:00 2001
From: Yaakov Selkowitz <yselkowi@redhat.com>
Date: Tue, 6 Feb 2024 18:41:17 -0500
Subject: [PATCH] Use RHEL LTO flags in ELN builds

These constraints are needed primarily for RHEL and CS builders.
---
 clang.spec | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/clang.spec b/clang.spec
index 32fae34..ddeede0 100644
--- a/clang.spec
+++ b/clang.spec
@@ -335,6 +335,13 @@ rm test/CodeGen/profile-filter.c
 %global _lto_cflags %nil
 %endif
 
+%if 0%{?rhel}
+%ifarch %{ix86}
+# Linking libclang.so goes out of memory even with ThinLTO and a single link job.
+%global _lto_cflags %nil
+%endif
+%endif
+
 %ifarch s390 s390x aarch64 %ix86 ppc64le
 # Decrease debuginfo verbosity to reduce memory consumption during final library linking
 %global optflags %(echo %{optflags} | sed 's/-g /-g1 /')