[tip:perf/core] perf build: Add single target build framework support

From: tip-bot for Jiri Olsa
Date: Wed Feb 18 2015 - 13:40:14 EST

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Commit-ID: 1999307b469bdfda97baa78c7f4ecf3800fdbacd
Gitweb: http://git.kernel.org/tip/1999307b469bdfda97baa78c7f4ecf3800fdbacd
Author: Jiri Olsa <jolsa@xxxxxxxxxx>
AuthorDate: Tue, 30 Dec 2014 18:44:38 +0100
Committer: Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>
CommitDate: Thu, 12 Feb 2015 13:22:41 -0300

perf build: Add single target build framework support

Add support to build single targets, like:

$ make util/map.o # objects
$ make util/map.i # preprocessor
$ make util/map.s # assembly

Signed-off-by: Jiri Olsa <jolsa@xxxxxxxxxx>
Tested-by: Sukadev Bhattiprolu <sukadev@xxxxxxxxxxxxxxxxxx>
Tested-by: Will Deacon <will.deacon@xxxxxxx>
Cc: Alexis Berlemont <alexis.berlemont@xxxxxxxxx>
Cc: Borislav Petkov <bp@xxxxxxxxx>
Cc: Corey Ashford <cjashfor@xxxxxxxxxxxxxxxxxx>
Cc: David Ahern <dsahern@xxxxxxxxx>
Cc: Frederic Weisbecker <fweisbec@xxxxxxxxx>
Cc: Namhyung Kim <namhyung@xxxxxxxxxx>
Cc: Paul Mackerras <paulus@xxxxxxxxx>
Cc: Peter Zijlstra <peterz@xxxxxxxxxxxxx>
Cc: Stephane Eranian <eranian@xxxxxxxxxx>
Link: http://lkml.kernel.org/n/tip-tt10y0dmweq6rjaod937rpb4@xxxxxxxxxxxxxx
Signed-off-by: Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>
---
tools/build/Makefile.build | 20 +++++++++++++++++++-
tools/perf/Makefile.perf | 39 ++++++++++++++++++++++++++++-----------
tools/perf/util/Build | 8 ++++++++
3 files changed, 55 insertions(+), 12 deletions(-)

diff --git a/tools/build/Makefile.build b/tools/build/Makefile.build
index aced86d..b5ded20 100644
--- a/tools/build/Makefile.build
+++ b/tools/build/Makefile.build
@@ -49,6 +49,12 @@ quiet_cmd_mkdir = MKDIR $(dir $@)
quiet_cmd_cc_o_c = CC $@
cmd_cc_o_c = $(CC) $(c_flags) -c -o $@ $<

+quiet_cmd_cc_i_c = CPP $@
+ cmd_cc_i_c = $(CC) $(c_flags) -E -o $@ $<
+
+quiet_cmd_cc_s_c = AS $@
+ cmd_cc_s_c = $(CC) $(c_flags) -S -o $@ $<
+
# Link agregate command
# If there's nothing to link, create empty $@ object.
quiet_cmd_ld_multi = LD $@
@@ -64,6 +70,18 @@ $(OUTPUT)%.o: %.S FORCE
$(call rule_mkdir)
$(call if_changed_dep,cc_o_c)

+$(OUTPUT)%.i: %.c FORCE
+ $(call rule_mkdir)
+ $(call if_changed_dep,cc_i_c)
+
+$(OUTPUT)%.i: %.S FORCE
+ $(call rule_mkdir)
+ $(call if_changed_dep,cc_i_c)
+
+$(OUTPUT)%.s: %.c FORCE
+ $(call rule_mkdir)
+ $(call if_changed_dep,cc_s_c)
+
# Gather build data:
# obj-y - list of build objects
# subdir-y - list of directories to nest
@@ -100,7 +118,7 @@ FORCE:

# Include all cmd files to get all the dependency rules
# for all objects included
-targets := $(wildcard $(sort $(obj-y) $(in-target)))
+targets := $(wildcard $(sort $(obj-y) $(in-target) $(MAKECMDGOALS)))
cmd_files := $(wildcard $(foreach f,$(targets),$(dir $(f)).$(notdir $(f)).cmd))

ifneq ($(cmd_files),)
diff --git a/tools/perf/Makefile.perf b/tools/perf/Makefile.perf
index 0a669f9..ef637e9 100644
--- a/tools/perf/Makefile.perf
+++ b/tools/perf/Makefile.perf
@@ -421,16 +421,33 @@ endif
# These two need to be here so that when O= is not used they take precedence
# over the general rule for .o

-$(OUTPUT)%.o: %.c $(OUTPUT)PERF-CFLAGS
- $(QUIET_CC)$(CC) -o $@ -c $(CFLAGS) $<
-$(OUTPUT)%.i: %.c $(OUTPUT)PERF-CFLAGS
- $(QUIET_CC)$(CC) -o $@ -E $(CFLAGS) $<
-$(OUTPUT)%.s: %.c $(OUTPUT)PERF-CFLAGS
- $(QUIET_CC)$(CC) -o $@ -S $(CFLAGS) $<
-$(OUTPUT)%.o: %.S
- $(QUIET_CC)$(CC) -o $@ -c $(CFLAGS) $<
-$(OUTPUT)%.s: %.S
- $(QUIET_CC)$(CC) -o $@ -E $(CFLAGS) $<
+# get relative building directory (to $(OUTPUT))
+# and '.' if it's $(OUTPUT) itself
+__build-dir = $(subst $(OUTPUT),,$(dir $@))
+build-dir = $(if $(__build-dir),$(__build-dir),.)
+
+single_dep: $(OUTPUT)PERF-VERSION-FILE $(OUTPUT)common-cmds.h
+
+$(OUTPUT)%.o: %.c single_dep FORCE
+ @$(MAKE) -f $(srctree)/tools/build/Makefile.build dir=$(build-dir) $@
+
+$(OUTPUT)%.i: %.c single_dep FORCE
+ @$(MAKE) -f $(srctree)/tools/build/Makefile.build dir=$(build-dir) $@
+
+$(OUTPUT)%.s: %.c single_dep FORCE
+ @$(MAKE) -f $(srctree)/tools/build/Makefile.build dir=$(build-dir) $@
+
+$(OUTPUT)%-bison.o: %.c single_dep FORCE
+ @$(MAKE) -f $(srctree)/tools/build/Makefile.build dir=$(build-dir) $@
+
+$(OUTPUT)%-flex.o: %.c single_dep FORCE
+ @$(MAKE) -f $(srctree)/tools/build/Makefile.build dir=$(build-dir) $@
+
+$(OUTPUT)%.o: %.S single_dep FORCE
+ @$(MAKE) -f $(srctree)/tools/build/Makefile.build dir=$(build-dir) $@
+
+$(OUTPUT)%.i: %.S single_dep FORCE
+ @$(MAKE) -f $(srctree)/tools/build/Makefile.build dir=$(build-dir) $@

$(OUTPUT)perf-%: %.o $(PERFLIBS)
$(QUIET_LINK)$(CC) $(CFLAGS) -o $@ $(LDFLAGS) $(filter %.o,$^) $(LIBS)
@@ -675,5 +692,5 @@ FORCE:

.PHONY: all install clean config-clean strip install-gtk
.PHONY: shell_compatibility_test please_set_SHELL_PATH_to_a_more_modern_shell
-.PHONY: $(GIT-HEAD-PHONY) TAGS tags cscope .FORCE-PERF-CFLAGS FORCE
+.PHONY: $(GIT-HEAD-PHONY) TAGS tags cscope .FORCE-PERF-CFLAGS FORCE single_dep

diff --git a/tools/perf/util/Build b/tools/perf/util/Build
index 4599188..32f9327 100644
--- a/tools/perf/util/Build
+++ b/tools/perf/util/Build
@@ -97,15 +97,19 @@ CFLAGS_config.o += -DETC_PERFCONFIG="BUILD_STR($(ETC_PERFCONFIG_SQ))"
CFLAGS_exec_cmd.o += -DPERF_EXEC_PATH="BUILD_STR($(perfexecdir_SQ))" -DPREFIX="BUILD_STR($(prefix_SQ))"

$(OUTPUT)util/parse-events-flex.c: util/parse-events.l $(OUTPUT)util/parse-events-bison.c
+ $(call rule_mkdir)
@$(call echo-cmd,flex)$(FLEX) -o $@ --header-file=$(OUTPUT)util/parse-events-flex.h $(PARSER_DEBUG_FLEX) util/parse-events.l

$(OUTPUT)util/parse-events-bison.c: util/parse-events.y
+ $(call rule_mkdir)
@$(call echo-cmd,bison)$(BISON) -v util/parse-events.y -d $(PARSER_DEBUG_BISON) -o $@ -p parse_events_

$(OUTPUT)util/pmu-flex.c: util/pmu.l $(OUTPUT)util/pmu-bison.c
+ $(call rule_mkdir)
@$(call echo-cmd,flex)$(FLEX) -o $@ --header-file=$(OUTPUT)util/pmu-flex.h util/pmu.l

$(OUTPUT)util/pmu-bison.c: util/pmu.y
+ $(call rule_mkdir)
@$(call echo-cmd,bison)$(BISON) -v util/pmu.y -d -o $@ -p perf_pmu_

CFLAGS_parse-events-flex.o += -w
@@ -122,13 +126,17 @@ CFLAGS_hweight.o += -Wno-unused-parameter -DETC_PERFCONFIG="BUILD_STR($(ET
CFLAGS_parse-events.o += -Wno-redundant-decls

$(OUTPUT)util/kallsyms.o: ../lib/symbol/kallsyms.c FORCE
+ $(call rule_mkdir)
$(call if_changed_dep,cc_o_c)

$(OUTPUT)util/find_next_bit.o: ../lib/util/find_next_bit.c FORCE
+ $(call rule_mkdir)
$(call if_changed_dep,cc_o_c)

$(OUTPUT)util/rbtree.o: ../../lib/rbtree.c FORCE
+ $(call rule_mkdir)
$(call if_changed_dep,cc_o_c)

$(OUTPUT)util/hweight.o: ../../lib/hweight.c FORCE
+ $(call rule_mkdir)
$(call if_changed_dep,cc_o_c)
--
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Next message: tip-bot for Jiri Olsa: "[tip:perf/core] perf build: Remove uneeded variables"
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