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

INSTALL_D0 = $(INSTALL) -d -m755 # space is required here
INSTALL_D1 =
INSTALL_R0 = $(INSTALL) -m644 # space is required here
INSTALL_R1 =
INSTALL_X0 = $(INSTALL) -m755 # space is required here
INSTALL_X1 =
INSTALL_L0 = rm -f # space is required here
INSTALL_L1 = && ln # space is required here
INSTALL_L2 =
INSTALL_L3 =

ifndef V
	QUIET          = @
	QUIET_GEN      = $(QUIET)echo '   ' GEN $@ &&
	QUIET_BUILT_IN = $(QUIET)echo '   ' BUILTIN $@ &&
	QUIET_INDEX    = $(QUIET)echo '   ' INDEX $(dir $@) &&
	QUIET_2DEVNULL = 2>/dev/null

	INSTALL_D0 = dir=
	INSTALL_D1 = && echo ' ' DEST $$dir && $(INSTALL) -d -m755 "$$dir"
	INSTALL_R0 = src=
	INSTALL_R1 = && echo '   ' INSTALL 644 `basename $$src` && $(INSTALL) -m644 $$src
	INSTALL_X0 = src=
	INSTALL_X1 = && echo '   ' INSTALL 755 `basename $$src` && $(INSTALL) -m755 $$src

	INSTALL_L0 = dst=
	INSTALL_L1 = && src=
	INSTALL_L2 = && dst=
	INSTALL_L3 = && echo '   ' 'LINK       ' `basename "$$dst"` '->' `basename "$$src"` && rm -f "$$dst" && ln "$$src" "$$dst"
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))

gg_libdir ?= $(sharedir)/git-gui/lib
libdir_SQ  = $(subst ','\'',$(gg_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)') \
	$(subst ','\'',gg_libdir='$(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
	$(QUIET)$(INSTALL_D0)'$(DESTDIR_SQ)$(gitexecdir_SQ)' $(INSTALL_D1)
	$(QUIET)$(INSTALL_X0)git-gui $(INSTALL_X1) '$(DESTDIR_SQ)$(gitexecdir_SQ)'
	$(QUIET)$(foreach p,$(GITGUI_BUILT_INS), $(INSTALL_L0)'$(DESTDIR_SQ)$(gitexecdir_SQ)/$p' $(INSTALL_L1)'$(DESTDIR_SQ)$(gitexecdir_SQ)/git-gui' $(INSTALL_L2)'$(DESTDIR_SQ)$(gitexecdir_SQ)/$p' $(INSTALL_L3) &&) true
	$(QUIET)$(INSTALL_D0)'$(DESTDIR_SQ)$(libdir_SQ)' $(INSTALL_D1)
	$(QUIET)$(INSTALL_R0)lib/tclIndex $(INSTALL_R1) '$(DESTDIR_SQ)$(libdir_SQ)'
	$(QUIET)$(foreach p,$(ALL_LIBFILES), $(INSTALL_R0)$p $(INSTALL_R1) '$(DESTDIR_SQ)$(libdir_SQ)' &&) true

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