Initial revision.

diff --git a/m4/xnanosleep.m4 b/m4/xnanosleep.m4
new file mode 100644 (file)
index 0000000..b786653
--- /dev/null
+++ b/m4/xnanosleep.m4
@@ -0,0 +1,35 @@
+# xnanosleep.m4 serial 1
+dnl Copyright (C) 2005 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.
+
+dnl Written by Paul Eggert.
+
+AC_DEFUN([gl_XNANOSLEEP],
+[
+  AC_LIBSOURCES([xnanosleep.c, xnanosleep.h])
+  AC_LIBOBJ([xnanosleep])
+
+  dnl Prerequisites of lib/xnanosleep.c.
+  AC_REQUIRE([gl_PREREQ_GETHRXTIME])
+
+  LIB_XNANOSLEEP=
+  case $LIB_GETHRXTIME in
+  ?*)
+    AC_CACHE_CHECK([whether __linux__ is defined],
+      gl_cv_have___linux__,
+      [AC_EGREP_CPP([have___linux__],
+       [
+#        ifdef __linux__
+         have___linux__
+#        endif
+       ],
+       gl_cv_have___linux__=yes,
+       gl_cv_have___linux__=no)])
+    if test $gl_cv_have___linux__ = yes; then
+      LIB_XNANOSLEEP=$LIB_GETHRXTIME
+    fi;;
+  esac
+  AC_SUBST([LIB_XNANOSLEEP])
+])