git-gui: Fallback to Tcl based po2msg.sh if msgfmt isn't available

If msgfmt fails with exit code 127 that typically means the program
is not found in the user's PATH and thus cannot be executed by make.
In such a case we can try to fallback to the Tcl based po2msg program
that we distributed with git-gui, as it does a "good enough" job.

We still don't default to po2msg.sh however as it does not perform
a lot of the sanity checks that msgfmt does, and quite a few of
those are too useful to give up.

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

diff --git a/Makefile b/Makefile
index 1baf4b086131a10ab7e33529274ebd15100f375e..5f1023e35fa2733d7f7ebd2b0a28623c2d77fae2 100644 (file)
--- a/Makefile
+++ b/Makefile
@@ -198,6 +198,9 @@ ifdef NO_MSGFMT
        MSGFMT ?= $(TCL_PATH) po/po2msg.sh
 else
        MSGFMT ?= msgfmt
+       ifeq ($(shell $(MSGFMT) >/dev/null 2>&1 || echo $$?),127)
+               MSGFMT := $(TCL_PATH) po/po2msg.sh
+       endif
 endif
 
 msgsdir     = $(gg_libdir)/msgs