Re: src/Makefile unhelpful

[Gregory Heytings]

> I looked into this earlier -- I wanted it to say something like 
> "Consider trying "make bootstrap"" (because that'd save people a lot of 
> time -- reporting the build problem, only to have somebody say that to 
> them over mail), but I was unable to find a way to make (GNU) Make say 
> anything in particular on make failures.
>
> But this was a couple of years ago, and perhaps Make has grown this 
> capability now?  Or I just missed it while reading the Make manual? 
> Anybody know?

Does the following do what you want?

diff --git a/Makefile.in b/Makefile.in
index d288bacb9d..67f19e7abd 100644
--- a/Makefile.in
+++ b/Makefile.in
@@ -366,6 +366,12 @@ ELN_DESTDIR =

 gsettings_SCHEMAS = etc/org.gnu.emacs.defaults.gschema.xml

+default:
+       $(MAKE) all || $(MAKE) signal_error
+
+signal_error:
+       @echo -e "\nConsider trying \"make bootstrap\"\n"
+
 all: ${SUBDIR} info $(gsettings_SCHEMAS:.xml=.valid) 
src-depending-on-lisp

 .PHONY: all ${SUBDIR} blessmail epaths-force epaths-force-w32 
epaths-force-ns-self-contained etc-emacsver