Re: [PATCH] git-gui: Build even if tclsh is not available

["Shawn O. Pearce" <spearce@spearce.org>]

Petr Baudis <pasky@suse.cz> wrote:
> As of now, git fails to build with default config if tclsh is not
> available, thus requiring manual config tweaking just because of some
> optimizations done at build time; this is a needless hassle when building
> git on any kind of a server.
> 
> This patch makes git-gui's build process to handle this gracefully; unless
> TCL_PATH is explicitly set, if tclsh cannot be executed only a warning is
> printed and the build goes on. I have tested this only on that server with
> no tclsh, but hopefully it shouldn't break the build process with tclsh
> available either.
> 
> Version 2, sorry - the previous version of the patch had the install hunk
> missing. And apologies for the duplicate submission... :-)
> 
> Signed-off-by: Petr Baudis <pasky@suse.cz>
> ---
> 
>  Makefile         |    8 +++++---
>  git-gui/Makefile |    4 ++--
>  2 files changed, 7 insertions(+), 5 deletions(-)

I have a couple of problems with the patch as-is.  The first is
of course that the patch needs to be split into two; one patch for
the git-gui subdirectory itself and one for git.git.

My other problem is 

>  ifeq ($(findstring $(MAKEFLAGS),s),s)
> @@ -92,7 +92,7 @@ install: all
>  	$(INSTALL) git-gui '$(DESTDIR_SQ)$(gitexecdir_SQ)'
>  	$(foreach p,$(GITGUI_BUILT_INS), rm -f '$(DESTDIR_SQ)$(gitexecdir_SQ)/$p' && ln '$(DESTDIR_SQ)$(gitexecdir_SQ)/git-gui' '$(DESTDIR_SQ)$(gitexecdir_SQ)/$p' ;)
>  	$(INSTALL) -d -m755 '$(DESTDIR_SQ)$(libdir_SQ)'
> -	$(INSTALL) -m644 lib/tclIndex '$(DESTDIR_SQ)$(libdir_SQ)'
> +	[ ! -e lib/tclIndex ] || $(INSTALL) -m644 lib/tclIndex '$(DESTDIR_SQ)$(libdir_SQ)'
>  	$(foreach p,$(ALL_LIBFILES), $(INSTALL) -m644 $p '$(DESTDIR_SQ)$(libdir_SQ)' ;)

git-gui won't work if lib/tclIndex is missing or invalid.  So not
installing it means we should just disable git-gui entirely.

-- 
Shawn.