Re: Install issues

[Junio C Hamano <gitster@pobox.com>]

"H.Merijn Brand" <h.m.brand@xs4all.nl> writes:

> --- Makefile.org	2008-11-10 17:29:53.000000000 +0100
> +++ Makefile	2008-11-10 17:29:39.000000000 +0100
> @@ -1329,6 +1329,10 @@ check-sha1:: test-sha1$X
>  	./test-sha1.sh
>  
>  check: common-cmds.h
> +	@`sparse </dev/null 2>/dev/null` || (\
> +	    echo "The 'sparse' command is not available, so I cannot make the 'check' target" ;\
> +	    echo "Did you mean 'make test' instead?" ;\
> +	    exit 1 )

When you mean "grouping", using {} is much clearer to convey your
intention.  Use of needless (subshell) forces the reader to wonder if you
wanted to do something that affects the environment for later commands
inside, and in this case you didn't.

Why do you have sparse check inside a backtick to produce a string to be
interpreted as a command to be executed?

How about doing this instead?  'sparse' without any parameter exits with
success status silently; when you do not have the command, the shell will
complain with "sparse: command not found" anyway, so you only need to
suggest "make 'test'" and nothing else.

-- >8 --
Subject: Makefile: help people who run 'make check' by mistake

The target to run self test is 'make test', but there are people who try
'make check' and worse yet do not have sparse installed.

Suggest 'make test' target when they do not have 'sparse'.

Signed-off-by: Junio C Hamano <gitster@pobox.com>
---
 Makefile |   11 ++++++++++-
 1 files changed, 10 insertions(+), 1 deletions(-)

diff --git c/Makefile w/Makefile
index 40309e1..d3137ca 100644
--- c/Makefile
+++ w/Makefile
@@ -1355,7 +1355,16 @@ check-sha1:: test-sha1$X
 	./test-sha1.sh
 
 check: common-cmds.h
-	for i in *.c; do sparse $(ALL_CFLAGS) $(SPARSE_FLAGS) $$i || exit; done
+	if sparse; \
+	then \
+		for i in *.c; \
+		do \
+			sparse $(ALL_CFLAGS) $(SPARSE_FLAGS) $$i || exit; \
+		done; \
+	else \
+		echo 2>&1 "Did you mean 'make test'?"; \
+		exit 1; \
+	fi
 
 remove-dashes:
 	./fixup-builtins $(BUILT_INS) $(PROGRAMS) $(SCRIPTS)