From c6a5e4030320c934bca70471d04aa9e7d8e2cd67 Mon Sep 17 00:00:00 2001
From: "Shawn O. Pearce" <spearce@spearce.org>
Date: Sun, 29 Apr 2007 03:02:10 -0400
Subject: git-gui: Track our own embedded values and rebuild when they change

Like core-Git we now track the values that we embed into our shell
script wrapper, and we "recompile" that wrapper if they are changed.
This concept was lifted from git.git's Makefile, where a similar
thing was done by Eygene Ryabinkin.  Too bad it wasn't just done
here in git-gui from the beginning, as the git.git Makefile support
for GIT-GUI-VARS was really just because git-gui doesn't do it on
its own.

Signed-off-by: Shawn O. Pearce <spearce@spearce.org>

diff --git a/.gitignore b/.gitignore
index c714d38..57cced8 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,3 +1,4 @@
 GIT-VERSION-FILE
+GIT-GUI-VARS
 git-citool
 git-gui
diff --git a/Makefile b/Makefile
index b29d7d1..3b6282e 100644
--- a/Makefile
+++ b/Makefile
@@ -53,7 +53,19 @@ $(GITGUI_BUILT_INS): git-gui
 	$(QUIET_BUILT_IN)rm -f $@ && ln git-gui $@
 
 # These can record GITGUI_VERSION
-$(patsubst %.sh,%,$(SCRIPT_SH)): GIT-VERSION-FILE
+$(patsubst %.sh,%,$(SCRIPT_SH)): GIT-VERSION-FILE GIT-GUI-VARS
+
+TRACK_VARS = \
+	$(subst ','\'',SHELL_PATH='$(SHELL_PATH_SQ)') \
+	$(subst ','\'',TCLTK_PATH='$(TCLTK_PATH_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)
 
@@ -67,7 +79,8 @@ dist-version:
 	@echo $(GITGUI_VERSION) > $(TARDIR)/version
 
 clean::
-	rm -f $(ALL_PROGRAMS) GIT-VERSION-FILE
+	rm -f $(ALL_PROGRAMS) GIT-VERSION-FILE GIT-GUI-VARS
 
 .PHONY: all install dist-version clean
 .PHONY: .FORCE-GIT-VERSION-FILE
+.PHONY: .FORCE-GIT-GUI-VARS
-- 
cgit v0.10.2-6-g49f6