* [tip:perf/core] tools/perf/build: Exclude MAKEFLAGS from nested invocation
@ 2013-10-15 5:19 tip-bot for Ingo Molnar
0 siblings, 0 replies; only message in thread
From: tip-bot for Ingo Molnar @ 2013-10-15 5:19 UTC (permalink / raw)
To: linux-tip-commits
Cc: linux-kernel, acme, hpa, mingo, a.p.zijlstra, namhyung, jolsa,
dsahern, tglx
Commit-ID: 684f434cc05a122938b75e055d7d799f1dd58d55
Gitweb: http://git.kernel.org/tip/684f434cc05a122938b75e055d7d799f1dd58d55
Author: Ingo Molnar <mingo@kernel.org>
AuthorDate: Fri, 4 Oct 2013 11:11:32 +0200
Committer: Ingo Molnar <mingo@kernel.org>
CommitDate: Wed, 9 Oct 2013 08:49:01 +0200
tools/perf/build: Exclude MAKEFLAGS from nested invocation
In case the user specifies MAKEFLAGS as an environment variable,
or uses 'make -jN' explicitly, the options can conflict and result in:
BUILD: Doing 'make -j8' parallel build
make[1]: warning: -jN forced in submake: disabling jobserver mode.
GEN common-cmds.h
make[1]: *** write jobserver: Bad file descriptor. Stop.
Make sure we invoke the main makefile in a pristine state.
Users who want to do something non-standard can use the:
make -f Makefile.perf
method to invoke the makefile.
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Link: http://lkml.kernel.org/n/tip-uen6hzTvkqqngqwjma9yoEgw@git.kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
---
tools/perf/Makefile | 16 +++++++++++++---
1 file changed, 13 insertions(+), 3 deletions(-)
diff --git a/tools/perf/Makefile b/tools/perf/Makefile
index 6f6f13a..74f52d8 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
#
^ permalink raw reply related [flat|nested] only message in thread
only message in thread, other threads:[~2013-10-15 5:19 UTC | newest]
Thread overview: (only message) (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2013-10-15 5:19 [tip:perf/core] tools/perf/build: Exclude MAKEFLAGS from nested invocation tip-bot for Ingo Molnar
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).