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c2bd08ba20
In Makefiles, $(error ), $(warning ), and $(info ) expand to the empty string, as explained in the GNU Make manual [1]: "The result of the expansion of this function is the empty string." Therefore, they are no-op except for logging purposes. $(shell ...) expands to the output of the command. It expands to the empty string when the command does not print anything to stdout. Hence, $(shell mkdir ...) is no-op except for creating the directory. Remove meaningless assignments. [1]: https://www.gnu.org/software/make/manual/make.html#Make-Control-Functions Signed-off-by: Masahiro Yamada <masahiroy@kernel.org> Reviewed-by: Arnaldo Carvalho de Melo <acme@redhat.com> Reviewed-by: Ian Rogers <irogers@google.com> Link: https://lore.kernel.org/r/20240221134201.2656908-1-masahiroy@kernel.org Signed-off-by: Namhyung Kim <namhyung@kernel.org> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Arnaldo Carvalho de Melo <acme@kernel.org> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Ingo Molnar <mingo@redhat.com> Cc: linux-kbuild@vger.kernel.org Cc: linux-kernel@vger.kernel.org Cc: linux-perf-users@vger.kernel.org
29 lines
714 B
Makefile
29 lines
714 B
Makefile
# SPDX-License-Identifier: GPL-2.0
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ifndef NO_DWARF
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PERF_HAVE_DWARF_REGS := 1
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endif
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HAVE_KVM_STAT_SUPPORT := 1
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PERF_HAVE_ARCH_REGS_QUERY_REGISTER_OFFSET := 1
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PERF_HAVE_JITDUMP := 1
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###
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# Syscall table generation
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#
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generated := $(OUTPUT)arch/x86/include/generated
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out := $(generated)/asm
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header := $(out)/syscalls_64.c
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sys := $(srctree)/tools/perf/arch/x86/entry/syscalls
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systbl := $(sys)/syscalltbl.sh
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# Create output directory if not already present
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$(shell [ -d '$(out)' ] || mkdir -p '$(out)')
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$(header): $(sys)/syscall_64.tbl $(systbl)
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$(Q)$(SHELL) '$(systbl)' $(sys)/syscall_64.tbl 'x86_64' > $@
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clean::
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$(call QUIET_CLEAN, x86) $(RM) -r $(header) $(generated)
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archheaders: $(header)
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