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authorGustavo A. R. Silva <gustavoars@kernel.org>2021-11-14 20:48:44 -0600
committerLinus Torvalds <torvalds@linux-foundation.org>2021-11-14 18:59:49 -0800
commit158ea2d2b2ff8fb49f39209a31b4920f13193a3d (patch)
treef5544770da5597c67196d6ca5c2c09ffca92f738 /init
parentfa55b7dcdc43c1aa1ba12bca9d2dd4318c2a0dbf (diff)
downloadlinux-158ea2d2b2ff8fb49f39209a31b4920f13193a3d.tar.bz2
kbuild: Fix -Wimplicit-fallthrough=5 error for GCC 5.x and 6.x
-Wimplicit-fallthrough=5 was under cc-option because it was only available in GCC 7.x and newer so the build is now broken for GCC 5.x and 6.x: gcc: error: unrecognized command line option '-Wimplicit-fallthrough=5'; did you mean '-Wno-fallthrough'? Fix this by moving -Wimplicit-fallthrough=5 under cc-option. Fixes: dee2b702bcf0 ("kconfig: Add support for -Wimplicit-fallthrough") Reported-by: Nathan Chancellor <nathan@kernel.org> Co-developed-by: Nathan Chancellor <nathan@kernel.org> Signed-off-by: Nathan Chancellor <nathan@kernel.org> Signed-off-by: Gustavo A. R. Silva <gustavoars@kernel.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'init')
-rw-r--r--init/Kconfig2
1 files changed, 1 insertions, 1 deletions
diff --git a/init/Kconfig b/init/Kconfig
index 036b750e8d8a..4b7bac10c72d 100644
--- a/init/Kconfig
+++ b/init/Kconfig
@@ -887,7 +887,7 @@ config CC_HAS_INT128
config CC_IMPLICIT_FALLTHROUGH
string
- default "-Wimplicit-fallthrough=5" if CC_IS_GCC
+ default "-Wimplicit-fallthrough=5" if CC_IS_GCC && $(cc-option,-Wimplicit-fallthrough=5)
default "-Wimplicit-fallthrough" if CC_IS_CLANG && $(cc-option,-Wunreachable-code-fallthrough)
#