mirror of https://gitee.com/openkylin/linux.git
perf config: Add some new -DHAVE_XXX to CFLAGS
For most of libraries, in perf.config, they are recorded with -DHAVE_XXX in CFLAGS according to if the libraries are compiled-in. Then C code then will know if the library is compiled-in or not. While for glibc, no -DHAVE_GLIBC_SUPPORT exists. For python and perl libraries, only -DNO_PYTHON and -DNO_LIBPERL exist. To make the code more consistent, the patch creates -DHAVE_LIBPYTHON_SUPPORT and -DHAVE_LIBPERL_SUPPORT if the python and perl libraries are compiled-in. Since the existing flags -DNO_PYTHON and -DNO_LIBPERL are being used in many places in C code, this patch doesn't remove them. In a follow-up patch, we will recontruct the C code and then use HAVE_XXX instead. v3: Move 'CFLAGS += -DHAVE_LIBPYTHON_SUPPORT' and 'CFLAGS += -DHAVE_LIBPERL_SUPPORT' to other places to avoid duplicated feature checking. v2: Create -DHAVE_GLIBC_SUPPORT, -DHAVE_LIBPYTHON_SUPPORT and -DHAVE_LIBPERL_SUPPORT. Signed-off-by: Jin Yao <yao.jin@linux.intel.com> Acked-by: Jiri Olsa <jolsa@kernel.org> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Jin Yao <yao.jin@intel.com> Cc: Kan Liang <kan.liang@intel.com> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/1522402036-22915-3-git-send-email-yao.jin@linux.intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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@ -352,6 +352,10 @@ else
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endif # libelf support
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endif # NO_LIBELF
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ifeq ($(feature-glibc), 1)
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CFLAGS += -DHAVE_GLIBC_SUPPORT
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endif
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ifdef NO_DWARF
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NO_LIBDW_DWARF_UNWIND := 1
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endif
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@ -635,6 +639,7 @@ else
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else
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LDFLAGS += $(PERL_EMBED_LDFLAGS)
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EXTLIBS += $(PERL_EMBED_LIBADD)
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CFLAGS += -DHAVE_LIBPERL_SUPPORT
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$(call detected,CONFIG_LIBPERL)
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endif
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endif
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@ -671,6 +676,7 @@ else
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LDFLAGS += $(PYTHON_EMBED_LDFLAGS)
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EXTLIBS += $(PYTHON_EMBED_LIBADD)
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LANG_BINDINGS += $(obj-perf)python/perf.so
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CFLAGS += -DHAVE_LIBPYTHON_SUPPORT
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$(call detected,CONFIG_LIBPYTHON)
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endif
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endif
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