[PATCH/RFC 1/2] Makefile: use target-specific variable to pass flags to cc
- From
Jonathan Nieder <jrnieder@gmail.com>
- Date
- Nov 27, 2009, 17:49 UTC
- Message-ID
- <20091127174932.GB3461@progeny.tock>
- In-Reply-To
- <20091127174558.GA3461@progeny.tock>
Remove some duplicated Makefile code by reusing the %.o: %.c rule even for objects that need to be built with special flags. This makes the relevant -D parameters more prominent on the command line and means any changes to the rules for compilation only have to happen in one place.
Target-specific variables have been supported in GNU make since version 3.77 from 1998.
Signed-off-by: Jonathan Nieder <jrnieder@gmail.com> --- Makefile | 31 +++++++++++++++---------------- 1 files changed, 15 insertions(+), 16 deletions(-)
diff --git a/Makefile b/Makefile index 5a0b3d4..ed0f461 100644 --- a/Makefile +++ b/Makefile @@ -1440,19 +1440,18 @@ strip: $(PROGRAMS) git$X $(STRIP) $(STRIP_OPTS) $(PROGRAMS) git$X git.o: git.c common-cmds.h GIT-CFLAGS - $(QUIET_CC)$(CC) -DGIT_VERSION='"$(GIT_VERSION)"' \ - '-DGIT_HTML_PATH="$(htmldir_SQ)"' \ - $(ALL_CFLAGS) -o $@ -c $(filter %.c,$^) +git.o: ALL_CFLAGS += -DGIT_VERSION='"$(GIT_VERSION)"' \ + '-DGIT_HTML_PATH="$(htmldir_SQ)"' git$X: git.o $(BUILTIN_OBJS) $(GITLIBS) $(QUIET_LINK)$(CC) $(ALL_CFLAGS) -o $@ git.o \ $(BUILTIN_OBJS) $(ALL_LDFLAGS) $(LIBS) builtin-help.o: builtin-help.c common-cmds.h GIT-CFLAGS - $(QUIET_CC)$(CC) -o $*.o -c $(ALL_CFLAGS) \ - '-DGIT_HTML_PATH="$(htmldir_SQ)"' \ - '-DGIT_MAN_PATH="$(mandir_SQ)"' \ - '-DGIT_INFO_PATH="$(infodir_SQ)"' $< +builtin-help.o: ALL_CFLAGS += \ + '-DGIT_HTML_PATH="$(htmldir_SQ)"' \ + '-DGIT_MAN_PATH="$(mandir_SQ)"' \ + '-DGIT_INFO_PATH="$(infodir_SQ)"' $(BUILT_INS): git$X $(QUIET_BUILT_IN)$(RM) $@ && \ @@ -1568,24 +1567,24 @@ git.o git.spec \ $(QUIET_CC)$(CC) -o $*.o -c $(ALL_CFLAGS) $< exec_cmd.o: exec_cmd.c GIT-CFLAGS - $(QUIET_CC)$(CC) -o $*.o -c $(ALL_CFLAGS) \ - '-DGIT_EXEC_PATH="$(gitexecdir_SQ)"' \ - '-DBINDIR="$(bindir_relative_SQ)"' \ - '-DPREFIX="$(prefix_SQ)"' \ - $< +exec_cmd.o: ALL_CFLAGS += \ + '-DGIT_EXEC_PATH="$(gitexecdir_SQ)"' \ + '-DBINDIR="$(bindir_relative_SQ)"' \ + '-DPREFIX="$(prefix_SQ)"' builtin-init-db.o: builtin-init-db.c GIT-CFLAGS - $(QUIET_CC)$(CC) -o $*.o -c $(ALL_CFLAGS) -DDEFAULT_GIT_TEMPLATE_DIR='"$(template_dir_SQ)"' $< +builtin-init-db.o: ALL_CFLAGS += \ + -DDEFAULT_GIT_TEMPLATE_DIR='"$(template_dir_SQ)"' config.o: config.c GIT-CFLAGS - $(QUIET_CC)$(CC) -o $*.o -c $(ALL_CFLAGS) -DETC_GITCONFIG='"$(ETC_GITCONFIG_SQ)"' $< +config.o: ALL_CFLAGS += -DETC_GITCONFIG='"$(ETC_GITCONFIG_SQ)"' http.o: http.c GIT-CFLAGS - $(QUIET_CC)$(CC) -o $*.o -c $(ALL_CFLAGS) -DGIT_USER_AGENT='"git/$(GIT_VERSION)"' $< +http.o: ALL_CFLAGS += -DGIT_USER_AGENT='"git/$(GIT_VERSION)"' ifdef NO_EXPAT http-walker.o: http-walker.c http.h GIT-CFLAGS - $(QUIET_CC)$(CC) -o $*.o -c $(ALL_CFLAGS) -DNO_EXPAT $< +http-walker.o: ALL_CFLAGS += -DNO_EXPAT endif git-%$X: %.o $(GITLIBS)
-- 1.6.5.3