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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 |
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