-# sys_select_h.m4 serial 9
-dnl Copyright (C) 2006-2010 Free Software Foundation, Inc.
+# sys_select_h.m4 serial 20
+dnl Copyright (C) 2006-2014 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_SYS_SELECT],
[
- AC_REQUIRE([gl_HEADER_SYS_SOCKET])
+ AC_REQUIRE([AC_C_RESTRICT])
AC_REQUIRE([gl_SYS_SELECT_H_DEFAULTS])
AC_CACHE_CHECK([whether <sys/select.h> is self-contained],
[gl_cv_header_sys_select_h_selfcontained],
[AC_LANG_PROGRAM([[#include <sys/select.h>]], [[
#undef memset
#define memset nonexistent_memset
- extern void *memset (void *, int, unsigned long);
+ extern
+ #ifdef __cplusplus
+ "C"
+ #endif
+ void *memset (void *, int, unsigned long);
#undef bzero
#define bzero nonexistent_bzero
- extern void bzero (void *, unsigned long);
+ extern
+ #ifdef __cplusplus
+ "C"
+ #endif
+ void bzero (void *, unsigned long);
fd_set fds;
FD_ZERO (&fds);
]])
])
fi
])
+ dnl <sys/select.h> is always overridden, because of GNULIB_POSIXCHECK.
gl_CHECK_NEXT_HEADERS([sys/select.h])
if test $ac_cv_header_sys_select_h = yes; then
HAVE_SYS_SELECT_H=1
HAVE_SYS_SELECT_H=0
fi
AC_SUBST([HAVE_SYS_SELECT_H])
- if test $gl_cv_header_sys_select_h_selfcontained != yes; then
- gl_PREREQ_SYS_H_WINSOCK2
- fi
+ gl_PREREQ_SYS_H_WINSOCK2
+
+ 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([[
+/* Some systems require prerequisite headers. */
+#include <sys/types.h>
+#if !(defined __GLIBC__ && !defined __UCLIBC__) && HAVE_SYS_TIME_H
+# include <sys/time.h>
+#endif
+#include <sys/select.h>
+ ]], [pselect select])
])
AC_DEFUN([gl_SYS_SELECT_MODULE_INDICATOR],
[
dnl Use AC_REQUIRE here, so that the default settings are expanded once only.
AC_REQUIRE([gl_SYS_SELECT_H_DEFAULTS])
- GNULIB_[]m4_translit([$1],[abcdefghijklmnopqrstuvwxyz./-],[ABCDEFGHIJKLMNOPQRSTUVWXYZ___])=1
+ gl_MODULE_INDICATOR_SET_VARIABLE([$1])
+ dnl Define it also as a C macro, for the benefit of the unit tests.
+ gl_MODULE_INDICATOR_FOR_TESTS([$1])
])
AC_DEFUN([gl_SYS_SELECT_H_DEFAULTS],
[
+ GNULIB_PSELECT=0; AC_SUBST([GNULIB_PSELECT])
GNULIB_SELECT=0; AC_SUBST([GNULIB_SELECT])
dnl Assume proper GNU behavior unless another module says otherwise.
+ HAVE_PSELECT=1; AC_SUBST([HAVE_PSELECT])
+ REPLACE_PSELECT=0; AC_SUBST([REPLACE_PSELECT])
REPLACE_SELECT=0; AC_SUBST([REPLACE_SELECT])
])