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-rw-r--r--tools/perf/Makefile16
1 files changed, 13 insertions, 3 deletions
diff --git a/tools/perf/Makefile b/tools/perf/Makefile
index 6f6f13a13bb6..74f52d8f9631 100644
--- a/tools/perf/Makefile
+++ b/tools/perf/Makefile
@@ -1,3 +1,10 @@
+#
+# This is a simple wrapper Makefile that calls the main Makefile.perf
+# with a -j option to do parallel builds
+#
+# If you want to invoke the perf build in some non-standard way then
+# you can use the 'make -f Makefile.perf' method to invoke it.
+#
#
# Clear out the built-in rules GNU make defines by default (such as .o targets),
@@ -6,6 +13,11 @@
.SUFFIXES:
#
+# We don't want to pass along options like -j:
+#
+unexport MAKEFLAGS
+
+#
# Do a parallel build with multiple jobs, based on the number of CPUs online
# in this system: 'make -j8' on a 8-CPU system, etc.
#
@@ -18,14 +30,12 @@ ifeq ($(JOBS),)
endif
endif
-export JOBS
-
define print_msg
@printf ' BUILD: Doing '\''make \033[33m-j'$(JOBS)'\033[m'\'' parallel build\n'
endef
define make
- @$(MAKE) -f Makefile.perf --no-print-directory -j$(JOBS) $@
+ @$(MAKE) -f Makefile.perf --no-print-directory -j$(JOBS) O=$(O) $@
endef
#