[Libdexter-commits] SF.net SVN: libdexter: [379] libdexter/trunk/libgnu/m4/include_next.m4

[<pk...@us...>]

Revision: 379
          http://svn.sourceforge.net/libdexter/?rev=379&view=rev
Author:   pkovacs
Date:     2007-06-29 20:24:43 -0700 (Fri, 29 Jun 2007)

Log Message:
-----------
add missing gnulib file

Added Paths:
-----------
    libdexter/trunk/libgnu/m4/include_next.m4

Added: libdexter/trunk/libgnu/m4/include_next.m4
===================================================================
--- libdexter/trunk/libgnu/m4/include_next.m4	                        (rev 0)
+++ libdexter/trunk/libgnu/m4/include_next.m4	2007-06-30 03:24:43 UTC (rev 379)
@@ -0,0 +1,85 @@
+# include_next.m4 serial 3
+dnl Copyright (C) 2006, 2007 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 From Paul Eggert and Derek Price.
+
+AC_DEFUN([gl_INCLUDE_NEXT],
+[
+  AC_LANG_PREPROC_REQUIRE()
+  AC_CACHE_CHECK([whether the preprocessor supports include_next],
+    [gl_cv_have_include_next],
+    [AC_PREPROC_IFELSE([#include_next <stddef.h>],
+       [gl_cv_have_include_next=yes],
+       [gl_cv_have_include_next=no])])
+  if test $gl_cv_have_include_next = yes; then
+
+    dnl FIXME: Remove HAVE_INCLUDE_NEXT and update everything that uses it
+    dnl to use @INCLUDE_NEXT@ instead.
+    AC_DEFINE([HAVE_INCLUDE_NEXT], 1,
+	      [Define if your compiler supports the #include_next directive.])
+
+    INCLUDE_NEXT=include_next
+  else
+    INCLUDE_NEXT=include
+  fi
+  AC_SUBST([INCLUDE_NEXT])
+])
+
+# gl_CHECK_NEXT_HEADERS(HEADER1 HEADER2 ...)
+# ------------------------------------------
+# For each arg foo.h, if #include_next works, define NEXT_FOO_H to be
+# '<foo.h>'; otherwise define it to be
+# '"///usr/include/foo.h"', or whatever other absolute file name is suitable.
+# That way, a header file with the following line:
+#	#@INCLUDE_NEXT@ @NEXT_FOO_H@
+# behaves (after sed substitution) as if it contained
+#	#include_next <foo.h>
+# even if the compiler does not support include_next.
+# The three "///" are to pacify Sun C 5.8, which otherwise would say
+# "warning: #include of /usr/include/... may be non-portable".
+# Use `""', not `<>', so that the /// cannot be confused with a C99 comment.
+AC_DEFUN([gl_CHECK_NEXT_HEADERS],
+[
+  AC_REQUIRE([gl_INCLUDE_NEXT])
+  AC_CHECK_HEADERS_ONCE([$1])
+
+  AC_FOREACH([gl_HEADER_NAME], [$1],
+    [AS_VAR_PUSHDEF([gl_next_header],
+		    [gl_cv_next_]m4_quote(m4_defn([gl_HEADER_NAME])))
+     if test $gl_cv_have_include_next = yes; then
+       AS_VAR_SET([gl_next_header], ['<'gl_HEADER_NAME'>'])
+     else
+       AC_CACHE_CHECK(
+	 [absolute name of <]m4_quote(m4_defn([gl_HEADER_NAME]))[>],
+	 m4_quote(m4_defn([gl_next_header])),
+	 [AS_VAR_PUSHDEF([gl_header_exists],
+			 [ac_cv_header_]m4_quote(m4_defn([gl_HEADER_NAME])))
+	  if test AS_VAR_GET(gl_header_exists) = yes; then
+	    AC_LANG_CONFTEST(
+	      [AC_LANG_SOURCE(
+		 [[#include <]]m4_dquote(m4_defn([gl_HEADER_NAME]))[[>]]
+	       )])
+	    dnl eval is necessary to expand ac_cpp.
+	    dnl Ultrix and Pyramid sh refuse to redirect output of eval,
+	    dnl so use subshell.
+	    AS_VAR_SET([gl_next_header],
+	      ['"'`(eval "$ac_cpp conftest.$ac_ext") 2>&AS_MESSAGE_LOG_FD |
+	       sed -n '\#/]m4_quote(m4_defn([gl_HEADER_NAME]))[#{
+		 s#.*"\(.*/]m4_quote(m4_defn([gl_HEADER_NAME]))[\)".*#\1#
+		 s#^/[^/]#//&#
+		 p
+		 q
+	       }'`'"'])
+	  else
+	    AS_VAR_SET([gl_next_header], ['<'gl_HEADER_NAME'>'])
+	  fi
+	  AS_VAR_POPDEF([gl_header_exists])])
+     fi
+     AC_SUBST(
+       AS_TR_CPP([NEXT_]m4_quote(m4_defn([gl_HEADER_NAME]))),
+       [AS_VAR_GET([gl_next_header])])
+     AS_VAR_POPDEF([gl_next_header])])
+])


Property changes on: libdexter/trunk/libgnu/m4/include_next.m4
___________________________________________________________________
Name: svn:mime-type
   + text/plain
Name: svn:keywords
   + Id
Name: svn:eol-style
   + native


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