make check hangs on test 93 under Sun Solaris 9

[Ralf Menzel]

Hi,

I tried to run 'make check' on a recent CVS checkout of autoconf, but
it hung on test 93: AC_ARG_VAR. I could trace this back to the patch
made to lib/autoconf/status.m4 on 2007-01-19. Without this patch all
tests work fine.

I tried to investigate the problem. What I found is that /usr/bin/awk
waits for input from stdin when invoked like this:

  /usr/bin/awk 'BEGIN { print 1 }'

I therefore tried the following patch that seems to work for me

--- snip ---
Index: lib/autoconf/status.m4
===================================================================
RCS file: /cvsroot/autoconf/autoconf/lib/autoconf/status.m4,v
retrieving revision 1.127
diff -u -p -r1.127 status.m4
--- lib/autoconf/status.m4      19 Jan 2007 06:54:34 -0000      1.127
+++ lib/autoconf/status.m4      6 Feb 2007 13:37:52 -0000
@@ -363,7 +363,7 @@ else
       '$ac_cs_awk_pipe_init
   ac_cs_awk_pipe_fini='END { print "|#_!!_#|" }'
 fi]])
-ac_cs_awk_cr=`$AWK 'BEGIN { print "a
b" }' 2>/dev/null`
+ac_cs_awk_cr=`$AWK 'BEGIN { print "a
b" }' </dev/null 2>/dev/null`
 if test "$ac_cs_awk_cr" = 'a
b'; then ac_cs_awk_cr=; else ac_cs_awk_cr='\\'; fi
 dnl
 dnl Define the pipe that does the substitution.
--- snip ---

Bye,
Ralf Menzel