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git/Makefile
Shawn O. Pearce 4e817d1ac4 git-gui: Don't require $DISPLAY just to get --version
Junio asked that we don't force the user to have a valid X11 server
configured in $DISPLAY just to obtain the output of `git gui version`.
This makes sense, the user may be an automated tool that is running
without an X server available to it, such as a build script or other
sort of package management system.  Or it might just be a user working
in a non-GUI environment and wondering "what version of git-gui do I
have installed?".

Tcl has a lot of warts, but one of its better ones is that a comment
can be continued to the next line by escaping the LF that would have
ended the comment using a backslash-LF sequence.  In the past we have
used this trick to escape away the 'exec wish' that is actually a Bourne
shell script and keep Tcl from executing it.

I'm using that feature here to comment out the Bourne shell script and
hide it from the Tcl engine.  Except now our Bourne shell script is a
few lines long and checks to see if it should print the version, or not.

Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
2007-06-22 01:10:12 -04:00

136 lines
3.7 KiB
Makefile

all::
# Define V=1 to have a more verbose compile.
#
GIT-VERSION-FILE: .FORCE-GIT-VERSION-FILE
@$(SHELL_PATH) ./GIT-VERSION-GEN
-include GIT-VERSION-FILE
uname_O := $(shell sh -c 'uname -o 2>/dev/null || echo not')
SCRIPT_SH = git-gui.sh
GITGUI_BUILT_INS = git-citool
ALL_PROGRAMS = $(GITGUI_BUILT_INS) $(patsubst %.sh,%,$(SCRIPT_SH))
ALL_LIBFILES = $(wildcard lib/*.tcl)
PRELOAD_FILES = lib/class.tcl
ifndef SHELL_PATH
SHELL_PATH = /bin/sh
endif
ifndef gitexecdir
gitexecdir := $(shell git --exec-path)
endif
ifndef sharedir
sharedir := $(dir $(gitexecdir))share
endif
ifndef INSTALL
INSTALL = install
endif
ifndef V
QUIET_GEN = @echo ' ' GEN $@;
QUIET_BUILT_IN = @echo ' ' BUILTIN $@;
QUIET_INDEX = @echo ' ' INDEX $(dir $@);
QUIET_2DEVNULL = 2>/dev/null
endif
TCL_PATH ?= tclsh
TCLTK_PATH ?= wish
ifeq ($(findstring $(MAKEFLAGS),s),s)
QUIET_GEN =
QUIET_BUILT_IN =
endif
DESTDIR_SQ = $(subst ','\'',$(DESTDIR))
gitexecdir_SQ = $(subst ','\'',$(gitexecdir))
SHELL_PATH_SQ = $(subst ','\'',$(SHELL_PATH))
TCL_PATH_SQ = $(subst ','\'',$(TCL_PATH))
TCLTK_PATH_SQ = $(subst ','\'',$(TCLTK_PATH))
libdir ?= $(sharedir)/git-gui/lib
libdir_SQ = $(subst ','\'',$(libdir))
exedir = $(dir $(gitexecdir))share/git-gui/lib
exedir_SQ = $(subst ','\'',$(exedir))
$(patsubst %.sh,%,$(SCRIPT_SH)) : % : %.sh
$(QUIET_GEN)rm -f $@ $@+ && \
GITGUI_RELATIVE= && \
if test '$(exedir_SQ)' = '$(libdir_SQ)'; then \
if test "$(uname_O)" = Cygwin; \
then GITGUI_RELATIVE= ; \
else GITGUI_RELATIVE=1; \
fi; \
fi && \
sed -e '1s|#!.*/sh|#!$(SHELL_PATH_SQ)|' \
-e 's|^ exec wish "$$0"| exec $(subst |,'\|',$(TCLTK_PATH_SQ)) "$$0"|' \
-e 's/@@GITGUI_VERSION@@/$(GITGUI_VERSION)/g' \
-e 's|@@GITGUI_RELATIVE@@|'$$GITGUI_RELATIVE'|' \
-e $$GITGUI_RELATIVE's|@@GITGUI_LIBDIR@@|$(libdir_SQ)|' \
$@.sh >$@+ && \
chmod +x $@+ && \
mv $@+ $@
$(GITGUI_BUILT_INS): git-gui
$(QUIET_BUILT_IN)rm -f $@ && ln git-gui $@
lib/tclIndex: $(ALL_LIBFILES)
$(QUIET_INDEX)if echo \
$(foreach p,$(PRELOAD_FILES),source $p\;) \
auto_mkindex lib '*.tcl' \
| $(TCL_PATH) $(QUIET_2DEVNULL); then : ok; \
else \
echo 1>&2 " * $(TCL_PATH) failed; using unoptimized loading"; \
rm -f $@ ; \
echo '# Autogenerated by git-gui Makefile' >$@ && \
echo >>$@ && \
$(foreach p,$(PRELOAD_FILES) $(ALL_LIBFILES),echo '$(subst lib/,,$p)' >>$@ &&) \
echo >>$@ ; \
fi
# These can record GITGUI_VERSION
$(patsubst %.sh,%,$(SCRIPT_SH)): GIT-VERSION-FILE GIT-GUI-VARS
lib/tclIndex: GIT-GUI-VARS
TRACK_VARS = \
$(subst ','\'',SHELL_PATH='$(SHELL_PATH_SQ)') \
$(subst ','\'',TCL_PATH='$(TCL_PATH_SQ)') \
$(subst ','\'',TCLTK_PATH='$(TCLTK_PATH_SQ)') \
$(subst ','\'',gitexecdir='$(gitexecdir_SQ)') \
$(subst ','\'',libdir='$(libdir_SQ)') \
#end TRACK_VARS
GIT-GUI-VARS: .FORCE-GIT-GUI-VARS
@VARS='$(TRACK_VARS)'; \
if test x"$$VARS" != x"`cat $@ 2>/dev/null`" ; then \
echo 1>&2 " * new locations or Tcl/Tk interpreter"; \
echo 1>$@ "$$VARS"; \
fi
all:: $(ALL_PROGRAMS) lib/tclIndex
install: all
$(INSTALL) -d -m755 '$(DESTDIR_SQ)$(gitexecdir_SQ)'
$(INSTALL) git-gui '$(DESTDIR_SQ)$(gitexecdir_SQ)'
$(foreach p,$(GITGUI_BUILT_INS), rm -f '$(DESTDIR_SQ)$(gitexecdir_SQ)/$p' && ln '$(DESTDIR_SQ)$(gitexecdir_SQ)/git-gui' '$(DESTDIR_SQ)$(gitexecdir_SQ)/$p' ;)
$(INSTALL) -d -m755 '$(DESTDIR_SQ)$(libdir_SQ)'
$(INSTALL) -m644 lib/tclIndex '$(DESTDIR_SQ)$(libdir_SQ)'
$(foreach p,$(ALL_LIBFILES), $(INSTALL) -m644 $p '$(DESTDIR_SQ)$(libdir_SQ)' ;)
dist-version:
@mkdir -p $(TARDIR)
@echo $(GITGUI_VERSION) > $(TARDIR)/version
clean::
rm -f $(ALL_PROGRAMS) lib/tclIndex
rm -f GIT-VERSION-FILE GIT-GUI-VARS
.PHONY: all install dist-version clean
.PHONY: .FORCE-GIT-VERSION-FILE
.PHONY: .FORCE-GIT-GUI-VARS