git-gui: Make git-gui lib dir configurable at runime

diff --git a/Makefile b/Makefile
index e9c2bc347dc77fb08bc6515a604a744fc4ee5795..4f00bdd3d69babe8a58c4989406eaa6fb5f36a50 100644 (file)
--- a/Makefile
+++ b/Makefile
@@ -4,7 +4,7 @@ all::
 #
 # Define NO_MSGFMT if you do not have msgfmt from the GNU gettext
 # package and want to use our rough pure Tcl po->msg translator.
-# TCL_PATH must be vaild for this to work.
+# TCL_PATH must be valid for this to work.
 #
 
 GIT-VERSION-FILE: FORCE
@@ -177,7 +177,8 @@ git-gui: GIT-VERSION-FILE GIT-GUI-VARS
        echo then >>$@+ && \
        echo '  'echo \'git-gui version '$(GITGUI_VERSION)'\' >>$@+ && \
        echo else >>$@+ && \
-       echo '  'exec \''$(libdir_SQ)/Git Gui.app/Contents/MacOS/$(subst \,,$(TKEXECUTABLE))'\' \
+       echo '  libdir="$${GIT_GUI_LIB_DIR:-$(libdir_SQ)}"' >>$@+ && \
+       echo '  'exec \"'$$libdir/Git Gui.app/Contents/MacOS/$(subst \,,$(TKEXECUTABLE))'\" \
                '"$$0" "$$@"' >>$@+ && \
        echo fi >>$@+ && \
        chmod +x $@+ && \