If a project uses both modules argp and argz, error_t may be both
#define'd, and set as typedef in argp.h. The #define from config.h
(which comes ultimatively from argz.m4) kills the typedef of course.
For example on sparc-sun-solaris2.8:
| cc -DHAVE_CONFIG_H -DEXEEXT=\"\" -DEXEEXT=\"\" -DLIBDIR=\"/usr/local/lib\"
-I. -I../../dummy-0/lib -I.. -D_REENTRANT -xarch=v9 -c
../../dummy-0/lib/argp-eexst.c
| "../../dummy-0/lib/argp.h", line 64: invalid type combination
| "../../dummy-0/lib/argp.h", line 64: warning: useless declaration
| "../../dummy-0/lib/argp.h", line 64: warning: typedef declares no type name
| cc: acomp failed for ../../dummy-0/lib/argp-eexst.c
The hack below fixes that, but I can imagine that it is not an
acceptable fix, given that this is libc code. Should we rather
AC_DEFINE([__error_t_defined], 1, ..)?
Thoughts?
Cheers,
Ralf
* lib/argp.h: Only declare error_t if not #defined already.
Index: lib/argp.h
===================================================================
RCS file: /cvsroot/gnulib/gnulib/lib/argp.h,v
retrieving revision 1.11
diff -u -r1.11 argp.h
--- lib/argp.h 10 Jan 2006 21:49:07 -0000 1.11
+++ lib/argp.h 22 Feb 2006 17:31:25 -0000
@@ -61,7 +61,9 @@
#endif
#ifndef __error_t_defined
+# ifndef error_t
typedef int error_t;
+# endif
# define __error_t_defined
#endif
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