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linux-yocto/tools/perf/arch/powerpc/Makefile
Masahiro Yamada c2bd08ba20 treewide: remove meaningless assignments in Makefiles 
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
2024-02-23 14:19:07 -08:00

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SPDX-License-Identifier: GPL-2.0

ifndef NO_DWARF PERF_HAVE_DWARF_REGS := 1 endif

HAVE_KVM_STAT_SUPPORT := 1 PERF_HAVE_ARCH_REGS_QUERY_REGISTER_OFFSET := 1 PERF_HAVE_JITDUMP := 1

Syscall table generation for perf

out := $(OUTPUT)arch/powerpc/include/generated/asm header32 := $(out)/syscalls_32.c header64 := $(out)/syscalls_64.c sysprf := $(srctree)/tools/perf/arch/powerpc/entry/syscalls sysdef := $(sysprf)/syscall.tbl systbl := $(sysprf)/mksyscalltbl

Create output directory if not already present

$(shell [ -d '$(out)' ] || mkdir -p '$(out)')

$(header64): $(sysdef) $(systbl) $(Q)$(SHELL) '$(systbl)' '64' $(sysdef) > $@

$(header32): $(sysdef) $(systbl) $(Q)$(SHELL) '$(systbl)' '32' $(sysdef) > $@

clean:: $(call QUIET_CLEAN, powerpc) $(RM) $(header32) $(header64)

archheaders: $(header32) $(header64)