commit: a664bdd217c8f4fbb108d6c2585425383b749b3b
Author: Sergei Trofimovich <slyfox <AT> gentoo <DOT> org>
AuthorDate: Fri Mar 6 18:29:12 2020 +0000
Commit: Sergei Trofimovich <slyfox <AT> gentoo <DOT> org>
CommitDate: Fri Mar 6 18:35:50 2020 +0000
URL: https://gitweb.gentoo.org/repo/gentoo.git/commit/?id=a664bdd2
toolchain.eclass: always use -O2, even when no -O is passed in.
Mike noticed that CFLAGS without any optimization options
still effectively are -O0. Let's follow glibc ebuild here
and always use -O2.
Suggested-by: Mike Gilbert
Signed-off-by: Sergei Trofimovich <slyfox <AT> gentoo.org>
eclass/toolchain.eclass | 6 +++++-
1 file changed, 5 insertions(+), 1 deletion(-)
diff --git a/eclass/toolchain.eclass b/eclass/toolchain.eclass
index d69ce9503ea..05d13189d3d 100644
--- a/eclass/toolchain.eclass
+++ b/eclass/toolchain.eclass
@@ -1494,8 +1494,12 @@ downgrade_arch_flags() {
}
gcc_do_filter_flags() {
- replace-flags -O? -O2 # 701786 (-O3)
+ # Be conservative here:
+ # - don't allow -O3 and like to over-optimize libgcc # 701786
+ # - don't allow -O0 to generate potentially invalid startup code
strip-flags
+ filter-flags '-O?'
+ append-flags -O2
# dont want to funk ourselves
filter-flags '-mabi*' -m31 -m32 -m64
