+2008-09-13 Bruno Haible <bruno@clisp.org>
+
+ * lib/errno.in.h: New file.
+ * m4/errno_h.m4: New file, borrowing from m4/eoverflow.m4.
+ * modules/errno: New file.
+ * doc/posix-headers/errno.texi: Update documentation.
+ * MODULES.html.sh (Support for systems lacking POSIX:2001): Add errno.
+
2008-09-13 Bruno Haible <bruno@clisp.org>
* tests/test-poll.c: Use #if for native Windows, rather than testing
func_module chown
func_module dup2
func_module environ
+ func_module errno
func_module EOVERFLOW
func_module fchdir
func_module fcntl
POSIX specification: @url{http://www.opengroup.org/susv3xbd/errno.h.html}
-Gnulib module: EOVERFLOW
+Gnulib module: errno, EOVERFLOW
Portability problems fixed by Gnulib:
@itemize
@item
-The macro @code{EOVERFLOW} is not defined on some platforms:
-OSF/1 4.0, mingw.
+The macros @code{EOVERFLOW}, @code{ENOLINK}, @code{EMULTIHOP} are not defined
+on some platforms:
+OpenBSD 4.0, OSF/1 4.0, mingw.
+@item
+The macros @code{ENOMSG}, @code{EIDRM}, @code{EPROTO}, @code{EBADMSG},
+@code{ENOTSUP}, @code{ECANCELED} are not defined on some platforms:
+OpenBSD 4.0, mingw.
+@item
+The macros @code{EWOULDBLOCK}, @code{ETXTBSY}, @code{ELOOP}, @code{ENOTSOCK},
+@code{EDESTADDRREQ}, @code{EMSGSIZE}, @code{EPROTOTYPE}, @code{ENOPROTOOPT},
+@code{EPROTONOSUPPORT}, @code{EOPNOTSUPP}, @code{EAFNOSUPPORT},
+@code{EADDRINUSE}, @code{EADDRNOTAVAIL}, @code{ENETDOWN}, @code{ENETUNREACH},
+@code{ENETRESET}, @code{ECONNABORTED}, @code{ECONNRESET}, @code{ENOBUFS},
+@code{EISCONN}, @code{ENOTCONN}, @code{ETIMEDOUT}, @code{ECONNREFUSED},
+@code{EHOSTUNREACH}, @code{EALREADY}, @code{EINPROGRESS}, @code{ESTALE},
+@code{EDQUOT} are not defined on some platforms:
+mingw.
@end itemize
Portability problems not fixed by Gnulib:
--- /dev/null
+/* A POSIX-like <errno.h>.
+
+ Copyright (C) 2008 Free Software Foundation, Inc.
+
+ This program is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 2, or (at your option)
+ any later version.
+
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program; if not, write to the Free Software Foundation,
+ Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. */
+
+#ifndef _GL_ERRNO_H
+
+@PRAGMA_SYSTEM_HEADER@
+
+/* The include_next requires a split double-inclusion guard. */
+#@INCLUDE_NEXT@ @NEXT_ERRNO_H@
+
+#ifndef _GL_ERRNO_H
+#define _GL_ERRNO_H
+
+
+/* On native Windows platforms, many macros are not defined. */
+# if (defined _WIN32 || defined __WIN32__) && ! defined __CYGWIN__
+
+/* Values >= 100 seem safe to use. */
+# define ETXTBSY 100
+# define GNULIB_defined_ETXTBSY 1
+
+/* These are intentionally the same values as the WSA* error numbers, defined
+ in <winsock2.h>. */
+# define EWOULDBLOCK 10035
+# define EINPROGRESS 10036
+# define EALREADY 10037
+# define ENOTSOCK 10038
+# define EDESTADDRREQ 10039
+# define EMSGSIZE 10040
+# define EPROTOTYPE 10041
+# define ENOPROTOOPT 10042
+# define EPROTONOSUPPORT 10043
+# define ESOCKTNOSUPPORT 10044 /* not required by POSIX */
+# define EOPNOTSUPP 10045
+# define EPFNOSUPPORT 10046 /* not required by POSIX */
+# define EAFNOSUPPORT 10047
+# define EADDRINUSE 10048
+# define EADDRNOTAVAIL 10049
+# define ENETDOWN 10050
+# define ENETUNREACH 10051
+# define ENETRESET 10052
+# define ECONNABORTED 10053
+# define ECONNRESET 10054
+# define ENOBUFS 10055
+# define EISCONN 10056
+# define ENOTCONN 10057
+# define ESHUTDOWN 10058 /* not required by POSIX */
+# define ETOOMANYREFS 10059 /* not required by POSIX */
+# define ETIMEDOUT 10060
+# define ECONNREFUSED 10061
+# define ELOOP 10062
+# define EHOSTDOWN 10064 /* not required by POSIX */
+# define EHOSTUNREACH 10065
+# define EPROCLIM 10067 /* not required by POSIX */
+# define EUSERS 10068 /* not required by POSIX */
+# define EDQUOT 10069
+# define ESTALE 10070
+# define EREMOTE 10071 /* not required by POSIX */
+# define GNULIB_defined_ESOCK 1
+
+# endif
+
+
+/* On OSF/1 5.1, when _XOPEN_SOURCE_EXTENDED is not defined, the macros
+ EMULTIHOP, ENOLINK, EOVERFLOW are not defined. */
+# if @EMULTIHOP_HIDDEN@
+# define EMULTIHOP @EMULTIHOP_VALUE@
+# define GNULIB_defined_EMULTIHOP 1
+# endif
+# if @ENOLINK_HIDDEN@
+# define ENOLINK @ENOLINK_VALUE@
+# define GNULIB_defined_ENOLINK 1
+# endif
+# if @EOVERFLOW_HIDDEN@
+# define EOVERFLOW @EOVERFLOW_VALUE@
+# define GNULIB_defined_EOVERFLOW 1
+# endif
+
+
+/* On OpenBSD 4.0 and on native Windows, the macros ENOMSG, EIDRM, ENOLINK,
+ EPROTO, EMULTIHOP, EBADMSG, EOVERFLOW, ENOTSUP, ECANCELED are not defined.
+ Define them here. Values >= 128 seem safe to use.
+
+ Note: When one of these systems defines some of these macros some day,
+ binaries will have to be recompiled so that they recognizes the new
+ errno values from the system. */
+
+# ifndef ENOMSG
+# define ENOMSG 128
+# define GNULIB_defined_ENOMSG 1
+# endif
+
+# ifndef EIDRM
+# define EIDRM 129
+# define GNULIB_defined_EIDRM 1
+# endif
+
+# ifndef ENOLINK
+# define ENOLINK 130
+# define GNULIB_defined_ENOLINK 1
+# endif
+
+# ifndef EPROTO
+# define EPROTO 131
+# define GNULIB_defined_EPROTO 1
+# endif
+
+# ifndef EMULTIHOP
+# define EMULTIHOP 132
+# define GNULIB_defined_EMULTIHOP 1
+# endif
+
+# ifndef EBADMSG
+# define EBADMSG 133
+# define GNULIB_defined_EBADMSG 1
+# endif
+
+# ifndef EOVERFLOW
+# define EOVERFLOW 134
+# define GNULIB_defined_EOVERFLOW 1
+# endif
+
+# ifndef ENOTSUP
+# define ENOTSUP 135
+# define GNULIB_defined_ENOTSUP 1
+# endif
+
+# ifndef ECANCELED
+# define ECANCELED 136
+# define GNULIB_defined_ECANCELED 1
+# endif
+
+
+#endif /* _GL_ERRNO_H */
+#endif /* _GL_ERRNO_H */
--- /dev/null
+# errno_h.m4 serial 1
+dnl Copyright (C) 2004, 2006, 2008 Free Software Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+
+AC_DEFUN([gl_HEADER_ERRNO_H],
+[
+ dnl Use AC_REQUIRE here, so that the default behavior below is expanded
+ dnl once only, before all statements that occur in other macros.
+ AC_REQUIRE([gl_HEADER_ERRNO_H_BODY])
+])
+
+AC_DEFUN([gl_HEADER_ERRNO_H_BODY],
+[
+ AC_REQUIRE([AC_PROG_CC])
+ AC_CACHE_CHECK([for complete errno.h], gl_cv_header_errno_h_complete, [
+ AC_EGREP_CPP(booboo,[
+#include <errno.h>
+#ifndef EOVERFLOW
+booboo
+#endif
+ ],
+ [gl_cv_header_errno_h_complete=no],
+ [gl_cv_header_errno_h_complete=yes])
+ ])
+ if test $gl_cv_header_errno_h_complete = yes; then
+ ERRNO_H=''
+ else
+ gl_CHECK_NEXT_HEADERS([errno.h])
+ ERRNO_H='errno.h'
+ fi
+ AC_SUBST([ERRNO_H])
+ gl_REPLACE_ERRNO_VALUE([EMULTIHOP])
+ gl_REPLACE_ERRNO_VALUE([ENOLINK])
+ gl_REPLACE_ERRNO_VALUE([EOVERFLOW])
+])
+
+# Assuming $1 = EOVERFLOW.
+# The EOVERFLOW errno value ought to be defined in <errno.h>, according to
+# POSIX. But some systems (like OpenBSD 4.0 or AIX 3) don't define it, and
+# some systems (like OSF/1) define it when _XOPEN_SOURCE_EXTENDED is defined.
+# Check for the value of EOVERFLOW.
+# Set the variables EOVERFLOW_HIDDEN and EOVERFLOW_VALUE.
+AC_DEFUN([gl_REPLACE_ERRNO_VALUE],
+[
+ if test -n "$ERRNO_H"; then
+ AC_CACHE_CHECK([for ]$1[ value], [gl_cv_header_errno_h_]$1, [
+ AC_EGREP_CPP(yes,[
+#include <errno.h>
+#ifdef ]$1[
+yes
+#endif
+ ],
+ [gl_cv_header_errno_h_]$1[=yes],
+ [gl_cv_header_errno_h_]$1[=no])
+ if test $gl_cv_header_errno_h_]$1[ = no; then
+ AC_EGREP_CPP(yes,[
+#define _XOPEN_SOURCE_EXTENDED 1
+#include <errno.h>
+#ifdef ]$1[
+yes
+#endif
+ ], [gl_cv_header_errno_h_]$1[=hidden])
+ if test $gl_cv_header_errno_h_]$1[ = hidden; then
+ dnl The macro exists but is hidden.
+ dnl Define it to the same value.
+ AC_COMPUTE_INT([gl_cv_header_errno_h_]$1, $1, [
+#define _XOPEN_SOURCE_EXTENDED 1
+#include <errno.h>
+/* The following two lines are a workaround against an autoconf-2.52 bug. */
+#include <stdio.h>
+#include <stdlib.h>
+])
+ fi
+ fi
+ ])
+ case $gl_cv_header_errno_h_]$1[ in
+ yes | no)
+ ]$1[_HIDDEN=0; ]$1[_VALUE=
+ ;;
+ *)
+ ]$1[_HIDDEN=1; ]$1[_VALUE="$gl_cv_header_errno_h_]$1["
+ ;;
+ esac
+ AC_SUBST($1[_HIDDEN])
+ AC_SUBST($1[_VALUE])
+ fi
+])
\ No newline at end of file
--- /dev/null
+Description:
+A POSIX-like <errno.h>.
+
+Files:
+lib/errno.in.h
+m4/errno_h.m4
+
+Depends-on:
+include_next
+
+configure.ac:
+gl_HEADER_ERRNO_H
+
+Makefile.am:
+BUILT_SOURCES += $(ERRNO_H)
+
+# We need the following in order to create <errno.h> when the system
+# doesn't have one that is POSIX compliant.
+errno.h: errno.in.h
+ rm -f $@-t $@
+ { echo '/* DO NOT EDIT! GENERATED AUTOMATICALLY! */' && \
+ sed -e 's|@''INCLUDE_NEXT''@|$(INCLUDE_NEXT)|g' \
+ -e 's|@''PRAGMA_SYSTEM_HEADER''@|@PRAGMA_SYSTEM_HEADER@|g' \
+ -e 's|@''NEXT_ERRNO_H''@|$(NEXT_ERRNO_H)|g' \
+ -e 's|@''EMULTIHOP_HIDDEN''@|$(EMULTIHOP_HIDDEN)|g' \
+ -e 's|@''EMULTIHOP_VALUE''@|$(EMULTIHOP_VALUE)|g' \
+ -e 's|@''ENOLINK_HIDDEN''@|$(ENOLINK_HIDDEN)|g' \
+ -e 's|@''ENOLINK_VALUE''@|$(ENOLINK_VALUE)|g' \
+ -e 's|@''EOVERFLOW_HIDDEN''@|$(EOVERFLOW_HIDDEN)|g' \
+ -e 's|@''EOVERFLOW_VALUE''@|$(EOVERFLOW_VALUE)|g' \
+ < $(srcdir)/errno.in.h; \
+ } > $@-t
+ mv $@-t $@
+MOSTLYCLEANFILES += errno.h errno.h-t
+
+Include:
+<errno.h>
+
+License:
+LGPLv2+
+
+Maintainer:
+Bruno Haible
+
projects / pspp / commitdiff