+Jiri
On Wed, May 17, 2017 at 1:26 PM, David Carrillo-Cisneros <[email protected]> wrote: > The goal is to allow users to override linking of libraries that > were automatically added to PERFLIBS. > > EXCLUDE_EXTLIBS contains linker flags to be removed from LIBS > while EXTRA_PERFLIBS contains linker flags to be added. > > My use case is to force certain library to be build statically, > e.g. for libelf: > > EXCLUDE_EXTLIBS=-lelf EXTRA_PERFLIBS=path/libelf.a > > Signed-off-by: David Carrillo-Cisneros <[email protected]> > --- > tools/perf/Makefile.perf | 8 +++++++- > 1 file changed, 7 insertions(+), 1 deletion(-) > > diff --git a/tools/perf/Makefile.perf b/tools/perf/Makefile.perf > index 79fe31f20a17..685443085e1a 100644 > --- a/tools/perf/Makefile.perf > +++ b/tools/perf/Makefile.perf > @@ -33,6 +33,11 @@ include ../scripts/utilities.mak > # > # Define EXTRA_CFLAGS=-m64 or EXTRA_CFLAGS=-m32 as appropriate for > cross-builds. > # > +# Define EXCLUDE_EXTLIBS=-lmylib to exclude libmylib from the auto-generated > +# EXTLIBS. > +# > +# Define EXTRA_PERFLIBS to pass extra libraries to PERFLIBS. > +# > # Define NO_DWARF if you do not want debug-info analysis feature at all. > # > # Define WERROR=0 to disable treating any warnings as errors. > @@ -352,7 +357,8 @@ ifdef ASCIIDOC8 > export ASCIIDOC8 > endif > > -LIBS = -Wl,--whole-archive $(PERFLIBS) -Wl,--no-whole-archive > -Wl,--start-group $(EXTLIBS) -Wl,--end-group > +EXTLIBS := $(call filter-out,$(EXCLUDE_EXTLIBS),$(EXTLIBS)) > +LIBS = -Wl,--whole-archive $(PERFLIBS) $(EXTRA_PERFLIBS) > -Wl,--no-whole-archive -Wl,--start-group $(EXTLIBS) -Wl,--end-group > > ifeq ($(USE_CLANG), 1) > CLANGLIBS_LIST = AST Basic CodeGen Driver Frontend Lex Tooling Edit Sema > Analysis Parse Serialization > -- > 2.13.0.303.g4ebf302169-goog >
