ansi2knr and pmake

[Ralf Wildenhues]

With pmake (BSD make) on GNU/Linux, some failures
| FAIL: ansi6.test
| FAIL: ansi7.test
| FAIL: ansi9.test
| FAIL: ansi10.test

happen because the `./ansi2knr' program doesn't match the `ansi2knr'
rule, thus pmake chooses its internal rule to compile C sources:
| gcc -g -O2   -o ./ansi2knr ./ansi2knr.c

thus the $(DEFS) don't get picked up:
| ./ansi2knr.c:184: error: conflicting types for 'malloc'
| ./ansi2knr.c:184: error: conflicting types for 'malloc'

I think the patch below fixes that.  The issue also happens on BSD
systems, except that there it just doesn't happen to turn into a test
failure due to less conflicting malloc declarations:
| ./ansi2knr.c:184: warning: conflicting types for built-in function 'malloc'

OK?  Or do we give up on KnR anyway and remove ansi2knr and its support
code?

Cheers,
Ralf

        * lib/am/ansi2knr.am (ansi2knr): Rename target as..
        (./ansi2knr): ..this, for BSD make.
        (%ANSI2KNR-DIR%/ansi2knr): Adjust.

Index: lib/am/ansi2knr.am
===================================================================
RCS file: /cvs/automake/automake/lib/am/ansi2knr.am,v
retrieving revision 1.6
diff -u -r1.6 ansi2knr.am
--- lib/am/ansi2knr.am  14 May 2005 20:28:51 -0000      1.6
+++ lib/am/ansi2knr.am  2 May 2006 18:10:28 -0000
@@ -29,14 +29,14 @@
 
 ANSI2KNR = %ANSI2KNR-DIR%/ansi2knr
 %ANSI2KNR-DIR%/ansi2knr:
-       cd %ANSI2KNR-DIR% && $(MAKE) $(AM_MAKEFLAGS) ansi2knr
+       cd %ANSI2KNR-DIR% && $(MAKE) $(AM_MAKEFLAGS) ./ansi2knr
 
 else !%?ANSI2KNR-DIR%
 
 ## Substitution from AM_C_PROTOTYPES.  This makes it be built only when
 ## necessary.
 ANSI2KNR = @ANSI2KNR@
-ansi2knr: ansi2knr.$(OBJEXT)
+./ansi2knr: ansi2knr.$(OBJEXT)
        $(LINK) ansi2knr.$(OBJEXT) $(LIBS)
 ansi2knr.$(OBJEXT): $(CONFIG_HEADER)