git-gui: Makefile - Handle $DESTDIR on Cygwin

gg_libdir is converted to an absolute Windows path on Cygwin,
but a later step attempts to prefix $DESTDIR to install to a
staging directory. Explicitly separate the uses of gg_libdir for
these two purposes so installation to $DESTDIR will work.

Signed-off-by: Mark Levedahl <mdl123@verizon.net>
Signed-off-by: Shawn O. Pearce <spearce@spearce.org>

diff --git a/Makefile b/Makefile
index c109eab1378b99943baa40bc5e36f0b526c8201e..1baf4b086131a10ab7e33529274ebd15100f375e 100644 (file)
--- a/Makefile
+++ b/Makefile
@@ -110,7 +110,7 @@ TCLTK_PATH_SED = $(subst ','\'',$(subst \,\\,$(TCLTK_PATH)))
 
 gg_libdir ?= $(sharedir)/git-gui/lib
 libdir_SQ  = $(subst ','\'',$(gg_libdir))
-libdir_SED = $(subst ','\'',$(subst \,\\,$(gg_libdir)))
+libdir_SED = $(subst ','\'',$(subst \,\\,$(gg_libdir_sed_in)))
 exedir     = $(dir $(gitexecdir))share/git-gui/lib
 
 GITGUI_SCRIPT   := $$0
@@ -119,11 +119,12 @@ GITGUI_MACOSXAPP :=
 
 ifeq ($(uname_O),Cygwin)
        GITGUI_SCRIPT := `cygpath --windows --absolute "$(GITGUI_SCRIPT)"`
-       gg_libdir := $(shell cygpath --windows --absolute "$(gg_libdir)")
+       gg_libdir_sed_in := $(shell cygpath --windows --absolute "$(gg_libdir)")
 else
        ifeq ($(exedir),$(gg_libdir))
                GITGUI_RELATIVE := 1
        endif
+       gg_libdir_sed_in := $(gg_libdir)
 endif
 ifeq ($(uname_S),Darwin)
        ifeq ($(shell test -d $(TKFRAMEWORK) && echo y),y)