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Makefile: Track changes to LDFLAGS and relink when necessary 

Some profiling tools (e.g., google-perftools and mutrace) work by
linking in a new library into the executables. When using these tools
it is convenient to only relink instead of doing a full make clean;
make cycle.

This change complements the auto-detection of changes to CFLAGS that
we already have. Tracking of more variables that affect the build can
be added when the need arise.

Signed-off-by: Fredrik Kuivinen <frekui@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Fredrik Kuivinen 2011-06-22 12:50:56 +02:00 committed by Junio C Hamano
parent 2765233c64
commit d9a25fca5f
2 changed files with 18 additions and 8 deletions
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1
.gitignore vendored
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@ -1,5 +1,6 @@
/GIT-BUILD-OPTIONS
/GIT-CFLAGS
/GIT-LDFLAGS
/GIT-GUI-VARS
/GIT-VERSION-FILE
/bin-wrappers/

25
Makefile
View File

@ -1706,7 +1706,7 @@ git.sp git.s git.o: EXTRA_CPPFLAGS = -DGIT_VERSION='"$(GIT_VERSION)"' \
'-DGIT_MAN_PATH="$(mandir_SQ)"' \
'-DGIT_INFO_PATH="$(infodir_SQ)"'
git$X: git.o $(BUILTIN_OBJS) $(GITLIBS)
git$X: git.o GIT-LDFLAGS $(BUILTIN_OBJS) $(GITLIBS)
$(QUIET_LINK)$(CC) $(ALL_CFLAGS) -o $@ git.o \
$(BUILTIN_OBJS) $(ALL_LDFLAGS) $(LIBS)
@ -2004,17 +2004,17 @@ compat/nedmalloc/nedmalloc.sp compat/nedmalloc/nedmalloc.o: EXTRA_CPPFLAGS = \
-DNDEBUG -DOVERRIDE_STRDUP -DREPLACE_SYSTEM_ALLOCATOR
endif
git-%$X: %.o $(GITLIBS)
git-%$X: %.o GIT-LDFLAGS $(GITLIBS)
$(QUIET_LINK)$(CC) $(ALL_CFLAGS) -o $@ $(ALL_LDFLAGS) $(filter %.o,$^) $(LIBS)
git-imap-send$X: imap-send.o $(GITLIBS)
git-imap-send$X: imap-send.o GIT-LDFLAGS $(GITLIBS)
$(QUIET_LINK)$(CC) $(ALL_CFLAGS) -o $@ $(ALL_LDFLAGS) $(filter %.o,$^) \
$(LIBS) $(OPENSSL_LINK) $(OPENSSL_LIBSSL) $(LIB_4_CRYPTO)
git-http-fetch$X: revision.o http.o http-walker.o http-fetch.o $(GITLIBS)
git-http-fetch$X: revision.o http.o http-walker.o http-fetch.o GIT-LDFLAGS $(GITLIBS)
$(QUIET_LINK)$(CC) $(ALL_CFLAGS) -o $@ $(ALL_LDFLAGS) $(filter %.o,$^) \
$(LIBS) $(CURL_LIBCURL)
git-http-push$X: revision.o http.o http-push.o $(GITLIBS)
git-http-push$X: revision.o http.o http-push.o GIT-LDFLAGS $(GITLIBS)
$(QUIET_LINK)$(CC) $(ALL_CFLAGS) -o $@ $(ALL_LDFLAGS) $(filter %.o,$^) \
$(LIBS) $(CURL_LIBCURL) $(EXPAT_LIBEXPAT)
@ -2024,7 +2024,7 @@ $(REMOTE_CURL_ALIASES): $(REMOTE_CURL_PRIMARY)
ln -s $< $@ 2>/dev/null || \
cp $< $@
$(REMOTE_CURL_PRIMARY): remote-curl.o http.o http-walker.o $(GITLIBS)
$(REMOTE_CURL_PRIMARY): remote-curl.o http.o http-walker.o GIT-LDFLAGS $(GITLIBS)
$(QUIET_LINK)$(CC) $(ALL_CFLAGS) -o $@ $(ALL_LDFLAGS) $(filter %.o,$^) \
$(LIBS) $(CURL_LIBCURL) $(EXPAT_LIBEXPAT)
@ -2094,6 +2094,15 @@ GIT-CFLAGS: FORCE
echo "$$FLAGS" >GIT-CFLAGS; \
fi
TRACK_LDFLAGS = $(subst ','\'',$(ALL_LDFLAGS))
GIT-LDFLAGS: FORCE
@FLAGS='$(TRACK_LDFLAGS)'; \
if test x"$$FLAGS" != x"`cat GIT-LDFLAGS 2>/dev/null`" ; then \
echo 1>&2 " * new link flags"; \
echo "$$FLAGS" >GIT-LDFLAGS; \
fi
# We need to apply sq twice, once to protect from the shell
# that runs GIT-BUILD-OPTIONS, and then again to protect it
# and the first level quoting from the shell that runs "echo".
@ -2165,7 +2174,7 @@ test-svn-fe$X: vcs-svn/lib.a
.PRECIOUS: $(TEST_OBJS)
test-%$X: test-%.o $(GITLIBS)
test-%$X: test-%.o GIT-LDFLAGS $(GITLIBS)
$(QUIET_LINK)$(CC) $(ALL_CFLAGS) -o $@ $(ALL_LDFLAGS) $(filter %.o,$^) $(filter %.a,$^) $(LIBS)
check-sha1:: test-sha1$X
@ -2375,7 +2384,7 @@ ifndef NO_TCLTK
$(MAKE) -C gitk-git clean
$(MAKE) -C git-gui clean
endif
$(RM) GIT-VERSION-FILE GIT-CFLAGS GIT-GUI-VARS GIT-BUILD-OPTIONS
$(RM) GIT-VERSION-FILE GIT-CFLAGS GIT-LDFLAGS GIT-GUI-VARS GIT-BUILD-OPTIONS
.PHONY: all install clean strip
.PHONY: shell_compatibility_test please_set_SHELL_PATH_to_a_more_modern_shell