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10c775afa5
If flex is version 2.6.4, reduce the number of flex C warnings disabled. Earlier flex versions have all C warnings disabled. Committer notes: Added this to the list of ignored warnings to get it building on a Fedora 36 machine with flex 2.6.4: -Wno-misleading-indentation Noticed when building with: $ make LLVM=1 -C tools/perf NO_BPF_SKEL=1 DEBUG=1 Take two: We can't just try to canonicalize flex versions by just removing the dots, as we end up with: 2.6.4 >= 2.5.37 becoming: 264 >= 2537 Failing the build on flex 2.5.37, so instead use the back to the past added $(call version_ge3,$(FLEX_VERSION),2.6.4) variant to check for that. Making sure $(FLEX_VERSION) keeps the dots as we may want to use 'sort -V' or something nicer when available everywhere. Some other tweaks for other flex versions and combinations with gcc and clang versions were added, notes on the patch. Signed-off-by: Ian Rogers <irogers@google.com> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Andrii Nakryiko <andrii@kernel.org> Cc: Eduard Zingerman <eddyz87@gmail.com> Cc: Gaosheng Cui <cuigaosheng1@huawei.com> Cc: Ingo Molnar <mingo@redhat.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Kan Liang <kan.liang@linux.intel.com> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Nathan Chancellor <nathan@kernel.org> Cc: Nick Desaulniers <ndesaulniers@google.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Rob Herring <robh@kernel.org> Cc: Tom Rix <trix@redhat.com> Cc: bpf@vger.kernel.org Cc: llvm@lists.linux.dev Link: https://lore.kernel.org/r/20230728064917.767761-5-irogers@google.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> |
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