This error shows that <strings.h> is not self-contained:
gcc -std=gnu99 -DHAVE_CONFIG_H -I. -I.. -DGNULIB_STRICT_CHECKING=1
-DIN_GNULIB_TESTS=1 -I. -I. -I.. -I./.. -I../gllib -I./../gllib -Wall
-I/home/bruno/prefix-minix-gcc/include -g -O2 -MT test-ffs.o -MD -MP -MF
$depbase.Tpo -c -o test-ffs.o test-ffs.c && mv -f $depbase.Tpo $depbase.Po
In file included from ../gllib/strings.h:28,
from test-ffs.c:20:
/usr/include/strings.h:6: error: expected declaration specifiers or '...'
before '(' token
/usr/include/strings.h:7: error: expected declaration specifiers or '...'
before '(' token
/usr/include/strings.h:7: error: conflicting types for '_PROTOTYPE'
/usr/include/strings.h:6: note: previous declaration of '_PROTOTYPE' was here
/usr/include/strings.h:8: error: expected declaration specifiers or '...'
before '(' token
/usr/include/strings.h:8: error: conflicting types for '_PROTOTYPE'
/usr/include/strings.h:6: note: previous declaration of '_PROTOTYPE' was here
/usr/include/strings.h:10: error: expected declaration specifiers or '...'
before '(' token
/usr/include/strings.h:10: error: conflicting types for '_PROTOTYPE'
/usr/include/strings.h:6: note: previous declaration of '_PROTOTYPE' was here
test-ffs.c:23: error: 'ffs' undeclared here (not in a function)
test-ffs.c: In function 'main':
test-ffs.c:48: warning: implicit declaration of function 'ffs'
*** Error code 1 (continuing)
This patch is the workaround.
2011-07-31 Bruno Haible <[email protected]>
strings: Add support for Minix.
* lib/strings.in.h [Minix]: Include <sys/types.h> before <strings.h>.
* m4/strings_h.m4 (gl_HEADER_STRINGS_H_BODY): Likewise.
* doc/posix-headers/strings.texi: Document the Minix problem.
--- doc/posix-headers/strings.texi.orig Sun Jul 31 23:01:16 2011
+++ doc/posix-headers/strings.texi Sun Jul 31 22:58:12 2011
@@ -7,6 +7,9 @@
Portability problems fixed by Gnulib:
@itemize
+@item
+This header file is not self-contained on some platforms:
+Minix 3.1.8.
@end itemize
Portability problems not fixed by Gnulib:
--- lib/strings.in.h.orig Sun Jul 31 23:01:16 2011
+++ lib/strings.in.h Sun Jul 31 22:57:18 2011
@@ -23,6 +23,12 @@
#endif
@PRAGMA_COLUMNS@
+/* Minix 3.1.8 has a bug: <sys/types.h> must be included before <strings.h>.
+ But avoid namespace pollution on glibc systems. */
+#if defined __minix && !defined __GLIBC__
+# include <sys/types.h>
+#endif
+
/* The include_next requires a split double-inclusion guard. */
#@INCLUDE_NEXT@ @NEXT_STRINGS_H@
--- m4/strings_h.m4.orig Sun Jul 31 23:01:17 2011
+++ m4/strings_h.m4 Sun Jul 31 23:00:00 2011
@@ -1,5 +1,5 @@
# Configure a replacement for <strings.h>.
-# serial 4
+# serial 5
# Copyright (C) 2007, 2009-2011 Free Software Foundation, Inc.
# This file is free software; the Free Software Foundation
@@ -20,7 +20,11 @@
dnl Check for declarations of anything we want to poison if the
dnl corresponding gnulib module is not in use.
- gl_WARN_ON_USE_PREPARE([[#include <strings.h>
+ gl_WARN_ON_USE_PREPARE([[
+ /* Minix 3.1.8 has a bug: <sys/types.h> must be included before
+ <strings.h>. */
+ #include <sys/types.h>
+ #include <strings.h>
]], [ffs strcasecmp strncasecmp])
])
--
In memoriam Jean Jaurès <http://en.wikipedia.org/wiki/Jean_Jaurès>
