1 From 80d086357a55b94a13e43756cf3e131f25eef0e4 Mon Sep 17 00:00:00 2001
2 From: Sam James <sam@gentoo.org>
3 Date: Mon, 28 Mar 2022 08:40:45 +0100
4 Subject: [PATCH] Fix CC logic in configure
6 In https://github.com/madler/zlib/commit/e9a52aa129efe3834383e415580716a7c4027f8d,
7 the logic was changed to try check harder for GCC, but it dropped
8 the default setting of cc=${CC}. It was throwing away any pre-set CC value as
11 The rest of the script then cascades down a bad path because it's convinced
12 it's not GCC or a GCC-like compiler.
14 This led to e.g. misdetection of inability to build shared libs
15 for say, multilib cases (w/ CC being one thing from the environment being used
16 for one test (e.g. x86_64-unknown-linux-gnu-gcc -m32 and then 'cc' used for
17 shared libs (but missing "-m32"!)). Obviously just one example of how
18 the old logic could break.
20 This restores the old default of 'CC' if nothing overrides it later
23 Bug: https://bugs.gentoo.org/836308
24 Signed-off-by: Sam James <sam@gentoo.org>
27 1 file changed, 3 insertions(+)
29 diff --git a/configure b/configure
30 index 52ff4a04e..3fa3e8618 100755
33 @@ -174,7 +174,10 @@ if test -z "$CC"; then
41 cflags=${CFLAGS-"-O3"}
42 # to force the asm version use: CFLAGS="-O3 -DASMV" ./configure