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perf symbols: allow forcing use of cplus_demangle

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commit d11c7addfe upstream.

For Fedora, I want to force perf to link against libiberty.a for
cplus_demangle, rather than libbfd.a for bfd_demangle due to licensing insanity
on binutils. (libiberty is LGPL2, libbfd is GPL3.)

If we just rely on autodetection, we'll end up with libbfd linked against us,
since they're both in binutils-static in the buildroot.

Cc: Ingo Molnar <mingo@elte.hu>
LKML-Reference: <20100510204335.GA7565@bombadil.infradead.org>
Signed-off-by: Kyle McMartin <kyle@redhat.com>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This commit is contained in:
Kyle McMartin 2010-05-10 16:43:35 -04:00 • committed by Greg Kroah-Hartman
commit cdcf58a4ed
1 changed files with 3 additions and 0 deletions
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3
tools/perf/Makefile
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@ -450,6 +450,9 @@ endif
ifdef NO_DEMANGLE
BASIC_CFLAGS += -DNO_DEMANGLE
else ifdef HAVE_CPLUS_DEMANGLE
EXTLIBS += -liberty
BASIC_CFLAGS += -DHAVE_CPLUS_DEMANGLE
else
has_bfd := $(shell sh -c "(echo '\#include <bfd.h>'; echo 'int main(void) { bfd_demangle(0, 0, 0); return 0; }') | $(CC) -x c - $(ALL_CFLAGS) -o $(BITBUCKET) $(ALL_LDFLAGS) $(EXTLIBS) -lbfd "$(QUIET_STDERR)" && echo y")