git-gui: Guess our share/git-gui/lib path at runtime if possible
Johannes Sixt asked me to try to avoid embedding the runtime location
of git-gui's library directory in the executable script. Not embedding
it helps the MinGW to be relocatable to another directory should a user
wish to install the programs in a directory other than the location the
packager wanted them to be installed into.
Most of this is a hack. We try to determine if the path of our master
git-gui script will be able to locate the lib by ../share/git-gui/lib.
This should be true if $(gitexecdir) and $(libdir) have the same prefix.
If they do then we defer the assignment of $(libdir) until runtime, and
we get it from $argv0 rather than embedding it into the script itself.
Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
diff --git a/Makefile b/Makefile
index ee56421..3de0de1 100644
--- a/Makefile
+++ b/Makefile
@@ -22,7 +22,7 @@
endif
ifndef sharedir
- sharedir := $(dir $(gitexecdir))/share
+ sharedir := $(dir $(gitexecdir))share
endif
ifndef INSTALL
@@ -53,12 +53,19 @@
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 $@ $@+ && \
+ if test '$(exedir_SQ)' = '$(libdir_SQ)'; then \
+ GITGUI_RELATIVE=1; \
+ fi && \
sed -e '1s|#!.*/sh|#!$(SHELL_PATH_SQ)|' \
-e 's|^exec wish "$$0"|exec $(subst |,'\|',$(TCLTK_PATH_SQ)) "$$0"|' \
-e 's/@@GITGUI_VERSION@@/$(GITGUI_VERSION)/g' \
- -e 's|@@GITGUI_LIBDIR@@|$(libdir_SQ)|' \
+ -e 's|@@GITGUI_RELATIVE@@|'$$GITGUI_RELATIVE'|' \
+ -e $$GITGUI_RELATIVE's|@@GITGUI_LIBDIR@@|$(libdir_SQ)|' \
$@.sh >$@+ && \
chmod +x $@+ && \
mv $@+ $@
@@ -88,6 +95,7 @@
$(subst ','\'',SHELL_PATH='$(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
diff --git a/git-gui.sh b/git-gui.sh
index cfc4c7f..dba5851 100755
--- a/git-gui.sh
+++ b/git-gui.sh
@@ -25,7 +25,11 @@
## configure our library
set oguilib {@@GITGUI_LIBDIR@@}
-if {[string match @@GITGUI_*@@ $oguilib]} {
+set oguirel {@@GITGUI_RELATIVE@@}
+if {$oguirel eq {1}} {
+ set oguilib [file dirname [file dirname [file normalize $argv0]]]
+ set oguilib [file join $oguilib share git-gui lib]
+} elseif {[string match @@* $oguirel]} {
set oguilib [file join [file dirname [file normalize $argv0]] lib]
}
set idx [file join $oguilib tclIndex]
@@ -55,7 +59,7 @@
} else {
set auto_path [concat [list $oguilib] $auto_path]
}
-unset -nocomplain fd idx
+unset -nocomplain oguilib oguirel idx fd
if {![catch {set _verbose $env(GITGUI_VERBOSE)}]} {
unset _verbose
