install-reloc: Support multi-binary installation.

[gnulib.git] / m4 / sys_times_h.m4

diff --git a/m4/sys_times_h.m4 b/m4/sys_times_h.m4
index aaff00a..6006985 100644 (file)
--- a/m4/sys_times_h.m4
+++ b/m4/sys_times_h.m4
@@ -1,6 +1,7 @@
 # Configure a replacement for <sys/times.h>.
+# serial 8
 
-# Copyright (C) 2008, 2009 Free Software Foundation, Inc.
+# Copyright (C) 2008-2013 Free Software Foundation, Inc.
 # This file is free software; the Free Software Foundation
 # gives unlimited permission to copy and/or distribute it,
 # with or without modifications, as long as this notice is preserved.
@@ -11,23 +12,40 @@ AC_DEFUN([gl_SYS_TIMES_H],
 [
   AC_REQUIRE([gl_SYS_TIMES_H_DEFAULTS])
 
-  AC_CHECK_HEADERS_ONCE([sys/times.h])
+  dnl <sys/times.h> is always overridden, because of GNULIB_POSIXCHECK.
+  gl_CHECK_NEXT_HEADERS([sys/times.h])
   if test $ac_cv_header_sys_times_h = yes; then
-    SYS_TIMES_H=
+    HAVE_SYS_TIMES_H=1
+    AC_CHECK_TYPES([struct tms], [], [HAVE_STRUCT_TMS=0], [[
+#include <sys/times.h>
+      ]])
   else
-    SYS_TIMES_H=sys/times.h
+    HAVE_SYS_TIMES_H=0
+    HAVE_STRUCT_TMS=0
   fi
-  AC_SUBST([SYS_TIMES_H])
+  AC_SUBST([HAVE_SYS_TIMES_H])
+
+  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 have incomplete headers.  */
+#if !(defined __GLIBC__ && !defined __UCLIBC__)
+# include <time.h>
+#endif
+#include <sys/times.h>
+    ]], [times])
 ])
 
 AC_DEFUN([gl_SYS_TIMES_MODULE_INDICATOR],
 [
   dnl Use AC_REQUIRE here, so that the default settings are expanded once only.
   AC_REQUIRE([gl_SYS_TIMES_H_DEFAULTS])
-  GNULIB_[]m4_translit([$1],[abcdefghijklmnopqrstuvwxyz./-],[ABCDEFGHIJKLMNOPQRSTUVWXYZ___])=1
+  gl_MODULE_INDICATOR_SET_VARIABLE([$1])
 ])
 
 AC_DEFUN([gl_SYS_TIMES_H_DEFAULTS],
 [
-  GNULIB_TIMES=0; AC_SUBST([GNULIB_TIMES])
+  GNULIB_TIMES=0;     AC_SUBST([GNULIB_TIMES])
+  HAVE_STRUCT_TMS=1;  AC_SUBST([HAVE_STRUCT_TMS])
+  HAVE_TIMES=1;       AC_SUBST([HAVE_TIMES])
 ])