Mercurial > gnulib
view m4/ptsname_r.m4 @ 17363:5a51fb7777a9
sys_select, sys_time: port 2013-01-30 Solaris 2.6 fix to Cygwin
Problem reported by Marco Atzeri in
<http://lists.gnu.org/archive/html/bug-gnulib/2013-03/msg00000.html>.
* lib/sys_select.in.h [HAVE_SYS_SELECT_H && _CYGWIN_SYS_TIME_H]:
Simply delegate to the system <sys/select.h> in this case too.
Also, pay attention to _GL_SYS_SELECT_H_REDIRECT_FROM_SYS_TIME_H only
if OSF/1, since otherwise Cygwin breaks, and it doesn't seem to
be needed on Solaris either.
* lib/sys_time.in.h [_CYGWIN_SYS_TIME_H]:
Simply delgate to the system <sys/time.h> in this case.
author | Paul Eggert <eggert@cs.ucla.edu> |
---|---|
date | Tue, 19 Mar 2013 09:08:47 -0700 |
parents | e542fd46ad6f |
children | 344018b6e5d7 |
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# ptsname_r.m4 serial 3 dnl Copyright (C) 2010-2013 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_FUNC_PTSNAME_R], [ AC_REQUIRE([gl_UNISTD_H_DEFAULTS]) dnl Persuade glibc <stdlib.h> to declare ptsname_r(). AC_REQUIRE([AC_USE_SYSTEM_EXTENSIONS]) AC_CHECK_FUNCS_ONCE([ptsname_r]) if test $ac_cv_func_ptsname_r = no; then HAVE_PTSNAME_R=0 else dnl On OSF/1 5.1, the type of the third argument is 'int', not 'size_t', dnl and the declaration is missing if _REENTRANT is not defined. AC_CACHE_CHECK([whether ptsname_r has the same signature as in glibc], [gl_cv_func_ptsname_r_signature_ok], [AC_COMPILE_IFELSE( [AC_LANG_PROGRAM( [[#include <stddef.h> #include <stdlib.h> /* Test whether ptsname_r is declared at all. */ int (*f) (int, char *, size_t) = ptsname_r; /* Test whether it has the same declaration as in glibc. */ #undef ptsname_r extern #ifdef __cplusplus "C" #endif int ptsname_r (int, char *, size_t); ]], [[return f (0, NULL, 0);]]) ], [gl_cv_func_ptsname_r_signature_ok=yes], [gl_cv_func_ptsname_r_signature_ok=no]) ]) if test $gl_cv_func_ptsname_r_signature_ok = no; then REPLACE_PTSNAME_R=1 fi fi ]) # Prerequisites of lib/ptsname.c. AC_DEFUN([gl_PREREQ_PTSNAME_R], [ AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles AC_CACHE_CHECK([whether isatty sets errno when it fails], [gl_cv_func_isatty_sets_errno], [AC_RUN_IFELSE( [AC_LANG_PROGRAM( [[#include <errno.h> #if (defined _WIN32 || defined __WIN32__) && ! defined __CYGWIN__ # include <io.h> #else # include <unistd.h> #endif ]], [[errno = 0; isatty (-1); return errno == 0; ]]) ], [gl_cv_func_isatty_sets_errno=yes], [gl_cv_func_isatty_sets_errno=no], [case "$host_os" in irix* | solaris* | mingw*) gl_cv_func_isatty_sets_errno="guessing no";; *) gl_cv_func_isatty_sets_errno="guessing yes";; esac ]) ]) case "$gl_cv_func_isatty_sets_errno" in *yes) ;; *) AC_DEFINE([ISATTY_FAILS_WITHOUT_SETTING_ERRNO], [1], [Define to 1 if isatty() may fail without setting errno.]) ;; esac ])