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mingw: Use the Git wrapper for builtins

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This reduces the disk footprint of a full Git for Windows setup
dramatically because on Windows, one cannot assume that hard links are
supported.

The net savings are calculated easily: the 32-bit `git.exe` file weighs
in with 7662 kB while the `git-wrapper.exe` file (modified to serve as a
drop-in replacement for builtins) weighs a scant 21 kB. At this point,
there are 109 builtins which results in a total of 813 MB disk space
being freed up by this commit.

Yes, that is really more than half a gigabyte.

Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
This commit is contained in:
Johannes Schindelin
2015-03-13 16:40:05 +01:00
parent 9c69393cd9
commit fe650b440a
2 changed files with 27 additions and 8 deletions
Download Patch File Download Diff File Expand all files Collapse all files

34
Makefile
View File

@@ -1724,11 +1724,17 @@ version.sp version.s version.o: EXTRA_CPPFLAGS = \
'-DGIT_VERSION="$(GIT_VERSION)"' \
'-DGIT_USER_AGENT=$(GIT_USER_AGENT_CQ_SQ)'
ifeq (,$(BUILT_IN_WRAPPER))
$(BUILT_INS): git$X
$(QUIET_BUILT_IN)$(RM) $@ && \
ln $< $@ 2>/dev/null || \
ln -s $< $@ 2>/dev/null || \
cp $< $@
else
$(BUILT_INS): $(BUILT_IN_WRAPPER)
$(QUIET_BUILT_IN)$(RM) $@ && \
cp $< $@
endif
common-cmds.h: generate-cmdlist.sh command-list.txt
@@ -2297,6 +2303,24 @@ profile-install: profile
profile-fast-install: profile-fast
$(MAKE) install
ifeq (,$(BUILT_IN_WRAPPER))
LN_OR_CP_BUILT_IN_BINDIR = \
test -z "$(NO_INSTALL_HARDLINKS)" && \
ln "$$bindir/git$X" "$$bindir/$$p" 2>/dev/null || \
ln -s "git$X" "$$bindir/$$p" 2>/dev/null || \
cp "$$bindir/git$X" "$$bindir/$$p" || exit;
LN_OR_CP_BUILT_IN_EXECDIR = \
test -z "$(NO_INSTALL_HARDLINKS)" && \
ln "$$execdir/git$X" "$$execdir/$$p" 2>/dev/null || \
ln -s "git$X" "$$execdir/$$p" 2>/dev/null || \
cp "$$execdir/git$X" "$$execdir/$$p" || exit;
else
LN_OR_CP_BUILT_IN_BINDIR = \
cp "$(BUILT_IN_WRAPPER)" "$$bindir/$$p" || exit;
LN_OR_CP_BUILT_IN_EXECDIR = \
cp "$(BUILT_IN_WRAPPER)" "$$execdir/$$p" || exit;
endif
install: all
$(INSTALL) -d -m 755 '$(DESTDIR_SQ)$(bindir_SQ)'
$(INSTALL) -d -m 755 '$(DESTDIR_SQ)$(gitexec_instdir_SQ)'
@@ -2335,17 +2359,11 @@ endif
} && \
for p in $(filter $(install_bindir_programs),$(BUILT_INS)); do \
$(RM) "$$bindir/$$p" && \
test -z "$(NO_INSTALL_HARDLINKS)" && \
ln "$$bindir/git$X" "$$bindir/$$p" 2>/dev/null || \
ln -s "git$X" "$$bindir/$$p" 2>/dev/null || \
cp "$$bindir/git$X" "$$bindir/$$p" || exit; \
$(LN_OR_CP_BUILT_IN_BINDIR) \
done && \
for p in $(BUILT_INS); do \
$(RM) "$$execdir/$$p" && \
test -z "$(NO_INSTALL_HARDLINKS)" && \
ln "$$execdir/git$X" "$$execdir/$$p" 2>/dev/null || \
ln -s "git$X" "$$execdir/$$p" 2>/dev/null || \
cp "$$execdir/git$X" "$$execdir/$$p" || exit; \
$(LN_OR_CP_BUILT_IN_EXECDIR) \
done && \
remote_curl_aliases="$(REMOTE_CURL_ALIASES)" && \
for p in $$remote_curl_aliases; do \

1
config.mak.uname
View File

@@ -573,6 +573,7 @@ else
NO_CURL = YesPlease
endif
OTHER_PROGRAMS += git-wrapper$(X)
BUILT_IN_WRAPPER = git-wrapper$(X)
git-wrapper$(X): compat/win32/git-wrapper.o git.res
$(QUIET_LINK)$(CC) $(ALL_LDFLAGS) $(COMPAT_CFLAGS) \