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perf config: Add some new -DHAVE_XXX to CFLAGS

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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>
This commit is contained in:
Jin Yao 2018-03-30 17:27:12 +08:00 committed by Arnaldo Carvalho de Melo
parent 6b416ebcc3
commit 8e2c241f0c
1 changed files with 6 additions and 0 deletions
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6
tools/perf/Makefile.config
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@ -352,6 +352,10 @@ else
endif # libelf support
endif # NO_LIBELF
ifeq ($(feature-glibc), 1)
CFLAGS += -DHAVE_GLIBC_SUPPORT
endif
ifdef NO_DWARF
NO_LIBDW_DWARF_UNWIND := 1
endif
@ -635,6 +639,7 @@ else
else
LDFLAGS += $(PERL_EMBED_LDFLAGS)
EXTLIBS += $(PERL_EMBED_LIBADD)
CFLAGS += -DHAVE_LIBPERL_SUPPORT
$(call detected,CONFIG_LIBPERL)
endif
endif
@ -671,6 +676,7 @@ else
LDFLAGS += $(PYTHON_EMBED_LDFLAGS)
EXTLIBS += $(PYTHON_EMBED_LIBADD)
LANG_BINDINGS += $(obj-perf)python/perf.so
CFLAGS += -DHAVE_LIBPYTHON_SUPPORT
$(call detected,CONFIG_LIBPYTHON)
endif
endif