From 8e2c241f0c9768c589319ff48d007526465374d2 Mon Sep 17 00:00:00 2001 From: Jin Yao Date: Fri, 30 Mar 2018 17:27:12 +0800 Subject: [PATCH] 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 Acked-by: Jiri Olsa Cc: Alexander Shishkin Cc: Andi Kleen Cc: Jin Yao Cc: Kan Liang Cc: Peter Zijlstra Link: http://lkml.kernel.org/r/1522402036-22915-3-git-send-email-yao.jin@linux.intel.com Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/Makefile.config | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/tools/perf/Makefile.config b/tools/perf/Makefile.config index 98ff73648b51..deb8fba2f4f1 100644 --- a/tools/perf/Makefile.config +++ b/tools/perf/Makefile.config @@ -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 -- GitLab