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package/linux-tools/perf: add dependency on 32-bit sync builtins

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Sync builtins ops are strictly required by perf utility as it uses
atomic_xxx() functions.

Otherwise building fails like that:
|.../output/host/opt/ext-toolchain/bin/../lib/gcc/arc-snps-linux-uclibc/8.2.1/../../../../arc-snps-linux-uclibc/bin/ld:
|.../output/build/linux-5.0.7/tools/perf/libperf.a(libperf-in.o): in function `atomic_cmpxchg':
|.../output/build/linux-5.0.7/tools/include/asm-generic/atomic-gcc.h:69: undefined reference to `__sync_val_compare_and_swap_4'

Signed-off-by: Alexey Brodkin <abrodkin@synopsys.com>
Cc: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
[Thomas: drop Config.in comment]
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
This commit is contained in:
Alexey Brodkin 2019-04-18 20:38:45 +03:00 committed by Thomas Petazzoni
parent fa7804fec4
commit d5edfa6eef
1 changed files with 1 additions and 0 deletions
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package/linux-tools/Config.in
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@ -46,6 +46,7 @@ config BR2_PACKAGE_LINUX_TOOLS_PCI
config BR2_PACKAGE_LINUX_TOOLS_PERF
bool "perf"
select BR2_PACKAGE_LINUX_TOOLS
depends on BR2_TOOLCHAIN_HAS_SYNC_4
help
perf (sometimes "Perf Events" or perf tools, originally
"Performance Counters for Linux") - is a performance