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authorJiri Olsa <jolsa@redhat.com>2015-08-26 15:01:03 +0200
committerArnaldo Carvalho de Melo <acme@redhat.com>2015-08-26 10:34:58 -0300
commit0bdede8a3e4ff7710622a2e6713d04b3243c24a8 (patch)
treebe8095b37491c704d02abd06919eb0e35006481f /tools/build/Makefile.build
parent18b9a05868391e8f617febb4528bc1765dc921cf (diff)
downloadlinux-0bdede8a3e4ff7710622a2e6713d04b3243c24a8.tar.gz
tools build: Allow duplicate objects in the object list
It's sometimes useful to specify the object affiliation to multiple config options like: libperf-$(CONFIG_X86) += tsc.o libperf-$(CONFIG_AUXTRACE) += tsc.o while the object itself is linked only once. Adding the support for this and ignoring duplicate objects in the object list. Suggested-by: Arnaldo Carvalho de Melo <acme@kernel.org> Signed-off-by: Jiri Olsa <jolsa@kernel.org> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Sukadev Bhattiprolu <sukadev@linux.vnet.ibm.com> Link: http://lkml.kernel.org/r/20150826130103.GF22670@krava.redhat.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/build/Makefile.build')
-rw-r--r--tools/build/Makefile.build2
1 files changed, 1 insertions, 1 deletions
diff --git a/tools/build/Makefile.build b/tools/build/Makefile.build
index 8120af9c0341..0c5f485521d6 100644
--- a/tools/build/Makefile.build
+++ b/tools/build/Makefile.build
@@ -63,7 +63,7 @@ quiet_cmd_gen = GEN $@
# If there's nothing to link, create empty $@ object.
quiet_cmd_ld_multi = LD $@
cmd_ld_multi = $(if $(strip $(obj-y)),\
- $(LD) -r -o $@ $(obj-y),rm -f $@; $(AR) rcs $@)
+ $(LD) -r -o $@ $(filter $(obj-y),$^),rm -f $@; $(AR) rcs $@)
# Build rules
$(OUTPUT)%.o: %.c FORCE