Merge remote-tracking branch 'torvalds/master' into perf/core

[linux-2.6-microblaze.git] / tools / perf / Makefile.config

diff --git a/tools/perf/Makefile.config b/tools/perf/Makefile.config
index 73df23d..8dc7cef 100644 (file)
--- a/tools/perf/Makefile.config
+++ b/tools/perf/Makefile.config
@@ -201,6 +201,12 @@ ifeq ($(call get-executable,$(BISON)),)
   dummy := $(error Error: $(BISON) is missing on this system, please install it)
 endif
 
+ifneq ($(OUTPUT),)
+  ifeq ($(shell expr $(shell $(BISON) --version | grep bison | sed -e 's/.\+ \([0-9]\+\).\([0-9]\+\).\([0-9]\+\)/\1\2\3/g') \>\= 371), 1)
+    BISON_FILE_PREFIX_MAP := --file-prefix-map=$(OUTPUT)=
+  endif
+endif
+
 # Treat warnings as errors unless directed not to
 ifneq ($(WERROR),0)
   CORE_CFLAGS += -Werror
@@ -634,7 +640,7 @@ endif
 ifdef BUILD_BPF_SKEL
   $(call feature_check,clang-bpf-co-re)
   ifeq ($(feature-clang-bpf-co-re), 0)
-    dummy := $(error Error: clang too old. Please install recent clang)
+    dummy := $(error Error: clang too old/not installed. Please install recent clang to build with BUILD_BPF_SKEL)
   endif
   $(call detected,CONFIG_PERF_BPF_SKEL)
   CFLAGS += -DHAVE_BPF_SKEL
@@ -1227,6 +1233,9 @@ $(call detected_var,LIBDIR)
 $(call detected_var,GTK_CFLAGS)
 $(call detected_var,PERL_EMBED_CCOPTS)
 $(call detected_var,PYTHON_EMBED_CCOPTS)
+ifneq ($(BISON_FILE_PREFIX_MAP),)
+$(call detected_var,BISON_FILE_PREFIX_MAP)
+endif
 
 # re-generate FEATURE-DUMP as we may have called feature_check, found out
 # extra libraries to add to LDFLAGS of some other test and then redo those