[klibc] [klibc:master] Kbuild: Add "-fcommon" for clang builds

[klibc-bot for Bill Wendling]

Commit-ID:  cfa1174baa1cd74525484afd4a9e5840dc08dfb9
Gitweb:     http://git.kernel.org/?p=libs/klibc/klibc.git;a=commit;h=cfa1174baa1cd74525484afd4a9e5840dc08dfb9
Author:     Bill Wendling <morbo at google.com>
AuthorDate: Sun, 29 Mar 2020 04:38:32 -0700
Committer:  Ben Hutchings <ben at decadent.org.uk>
CommitDate: Sat, 25 Jul 2020 20:45:34 +0100

[klibc] Kbuild: Add "-fcommon" for clang builds

Clang defaults to "-fno-common" which causes linking errors because of
duplicate symbols in the BSS section.

Signed-off-by: Bill Wendling <morbo at google.com>
Signed-off-by: Ben Hutchings <ben at decadent.org.uk>

---
 scripts/Kbuild.klibc | 1 +
 1 file changed, 1 insertion(+)

diff --git a/scripts/Kbuild.klibc b/scripts/Kbuild.klibc
index ce646212..82c74ea7 100644
--- a/scripts/Kbuild.klibc
+++ b/scripts/Kbuild.klibc
@@ -70,6 +70,7 @@ KLIBCREQFLAGS     := $(call cc-option, -fno-stack-protector, ) \
                      $(call cc-option, -fwrapv, ) \
                      $(call cc-option, -fno-PIE, ) \
                      $(call cc-option, -fno-builtin-bcmp, ) \
+                     $(call cc-option, -fcommon, ) \
                      -ggdb
 KLIBCARCHREQFLAGS :=
 KLIBCOPTFLAGS     :=