Nathan Chancellor d0ee23f9d7 tools: compiler-gcc.h: Guard error attribute use with __has_attribute ... When building objtool with HOSTCC=clang, there are several errors along the lines of orc_dump.c:201:28: error: unknown attribute 'error' ignored [-Werror,-Wunknown-attributes] This occurs after commit 4e59869aa6 ("compiler-gcc.h: drop checks for older GCC versions"), which removed the GCC_VERSION gating. The removed version check just so happened to prevent __compiletime_error() from being defined with clang because it pretends to be GCC 4.2.1 for compatibility but the error attribute was not added to clang until 14.0.0. Commit 815f0ddb34 ("include/linux/compiler*.h: make compiler-*.h mutually exclusive") and commit a3f8a30f3f ("Compiler Attributes: use feature checks instead of version checks") refactored the handling of attributes in the main kernel to avoid situations like this but that refactoring has never been done for the tools directory. Refactoring is a rather large undertaking and this has never been an issue before so instead, just guard the definition of __compiletime_error() with __has_attribute() so that there are no more errors. Fixes: 4e59869aa6 ("compiler-gcc.h: drop checks for older GCC versions") Signed-off-by: Nathan Chancellor <nathan@kernel.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>		2021-09-13 15:51:41 -07:00
..
asm	tools arch: Update arch/x86/lib/mem{cpy,set}_64.S copies used in 'perf bench mem memcpy'	2021-05-10 09:01:00 -03:00
asm-generic	Merge branch 'akpm' (patches from Andrew)	2021-05-07 00:34:51 -07:00
linux	tools: compiler-gcc.h: Guard error attribute use with __has_attribute	2021-09-13 15:51:41 -07:00
nolibc	tools/nolibc: Implement msleep()	2021-07-20 13:42:26 -07:00
tools	tools: bpf: fix license for a compat header file	2018-09-19 23:49:58 +02:00
trace/events	tools/lib/lockdep: Remove private kernel headers	2017-06-05 09:28:14 +02:00
uapi	tools headers UAPI: Update tools's copy of drm.h headers	2021-09-11 16:24:10 -03:00
vdso	tools headers: Synchronize linux/bits.h with the kernel sources	2020-04-14 11:40:05 -03:00