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author | Masahiro Yamada <yamada.masahiro@socionext.com> | 2017-04-14 15:17:26 +0900 |
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committer | Masahiro Yamada <yamada.masahiro@socionext.com> | 2017-04-18 23:38:53 +0900 |
commit | 90ad4052e85cece1bbae064ff4b14088de35df29 (patch) | |
tree | d31f3811206fc4f51d1677cceb74f58f5e6a557d /scripts | |
parent | ebf003f0cfb3705e60d40dedc3ec949176c741af (diff) |
kbuild: avoid conflict between -ffunction-sections and -pg on gcc-4.7
Arnd Bergmann reported:
"When ftrace is enabled and we build with gcc-4.7 or older, we
get a warning for each file on architectures that select
CONFIG_LD_DEAD_CODE_DATA_ELIMINATION:
warning: -ffunction-sections disabled; it makes profiling impossible [enabled by default]
"
Since commit c3f0d0bc5b01 ("kbuild, LLVMLinux: Add -Werror to
cc-option to support clang"), warnings are treated as errors in
cc-option checks. CC_FLAGS_FTRACE is blindly added to KBUILD_CFLAGS,
so $(call cc-option,-ffunction-sections,) should be moved below it
in order to detect the conflict between the two options.
Reported-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Diffstat (limited to 'scripts')
0 files changed, 0 insertions, 0 deletions