X-Git-Url: http://erislabs.net/gitweb/?a=blobdiff_plain;f=m4%2Fsys_select_h.m4;h=95e7818fd83c0a83e1e2318b16832a12a5ff016c;hb=580effc9a799bd5c5b0d0ffb1830dffb76842c7e;hp=c2fd5ab19508f51734ef081c9456da3fe1dbaf19;hpb=b2e2010c7c902235b5efb5bd3c6529f61b093aa4;p=gnulib.git

diff --git a/m4/sys_select_h.m4 b/m4/sys_select_h.m4
index c2fd5ab19..95e7818fd 100644
--- a/m4/sys_select_h.m4
+++ b/m4/sys_select_h.m4
@@ -1,4 +1,4 @@
-# sys_select_h.m4 serial 9
+# sys_select_h.m4 serial 14
 dnl Copyright (C) 2006-2010 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
@@ -45,6 +45,8 @@ AC_DEFUN([gl_HEADER_SYS_SELECT],
           ])
       fi
     ])
+  AC_CHECK_HEADERS_ONCE([sys/select.h])
+  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
@@ -52,16 +54,27 @@ AC_DEFUN([gl_HEADER_SYS_SELECT],
     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__ && HAVE_SYS_TIME_H
+# include <sys/time.h>
+#endif
+#include <sys/select.h>
+    ]], [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],