Imported Upstream version 1.4

[debian/gzip] / m4 / include_next.m4

diff --git a/m4/include_next.m4 b/m4/include_next.m4
index 5e22ded936ccb558203f81709e7b8f2417fd532f..c7e0672f60c01b02fa96a2a4427907c69f483879 100644 (file)
--- a/m4/include_next.m4
+++ b/m4/include_next.m4
@@ -1,5 +1,5 @@
 # include_next.m4 serial 14
-dnl Copyright (C) 2006-2009 Free Software Foundation, Inc.
+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,
 dnl with or without modifications, as long as this notice is preserved.
@@ -109,11 +109,11 @@ EOF
 # 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@
+#       #@INCLUDE_NEXT@ @NEXT_FOO_H@
 # or
-#      #@INCLUDE_NEXT_AS_FIRST_DIRECTIVE@ @NEXT_AS_FIRST_DIRECTIVE_FOO_H@
+#       #@INCLUDE_NEXT_AS_FIRST_DIRECTIVE@ @NEXT_AS_FIRST_DIRECTIVE_FOO_H@
 # behaves (after sed substitution) as if it contained
-#      #include_next <foo.h>
+#       #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".
@@ -129,46 +129,46 @@ AC_DEFUN([gl_CHECK_NEXT_HEADERS],
 
   m4_foreach_w([gl_HEADER_NAME], [$1],
     [AS_VAR_PUSHDEF([gl_next_header],
-                   [gl_cv_next_]m4_defn([gl_HEADER_NAME]))
+                    [gl_cv_next_]m4_defn([gl_HEADER_NAME]))
      if test $gl_cv_have_include_next = yes; then
        AS_VAR_SET([gl_next_header], ['<'gl_HEADER_NAME'>'])
      else
        AC_CACHE_CHECK(
-        [absolute name of <]m4_defn([gl_HEADER_NAME])[>],
-        m4_defn([gl_next_header]),
-        [AS_VAR_PUSHDEF([gl_header_exists],
-                        [ac_cv_header_]m4_defn([gl_HEADER_NAME]))
-         if test AS_VAR_GET(gl_header_exists) = yes; then
-           AC_LANG_CONFTEST(
-             [AC_LANG_SOURCE(
-                [[#include <]]m4_dquote(m4_defn([gl_HEADER_NAME]))[[>]]
-              )])
-           dnl AIX "xlc -E" and "cc -E" omit #line directives for header files
-           dnl that contain only a #include of other header files and no
-           dnl non-comment tokens of their own. This leads to a failure to
-           dnl detect the absolute name of <dirent.h>, <signal.h>, <poll.h>
-           dnl and others. The workaround is to force preservation of comments
-           dnl through option -C. This ensures all necessary #line directives
-           dnl are present. GCC supports option -C as well.
-           case "$host_os" in
-             aix*) gl_absname_cpp="$ac_cpp -C" ;;
-             *)    gl_absname_cpp="$ac_cpp" ;;
-           esac
-           dnl eval is necessary to expand gl_absname_cpp.
-           dnl Ultrix and Pyramid sh refuse to redirect output of eval,
-           dnl so use subshell.
-           AS_VAR_SET([gl_next_header],
-             ['"'`(eval "$gl_absname_cpp conftest.$ac_ext") 2>&AS_MESSAGE_LOG_FD |
-              sed -n '\#/]m4_defn([gl_HEADER_NAME])[#{
-                s#.*"\(.*/]m4_defn([gl_HEADER_NAME])[\)".*#\1#
-                s#^/[^/]#//&#
-                p
-                q
-              }'`'"'])
-         else
-           AS_VAR_SET([gl_next_header], ['<'gl_HEADER_NAME'>'])
-         fi
-         AS_VAR_POPDEF([gl_header_exists])])
+         [absolute name of <]m4_defn([gl_HEADER_NAME])[>],
+         m4_defn([gl_next_header]),
+         [AS_VAR_PUSHDEF([gl_header_exists],
+                         [ac_cv_header_]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 AIX "xlc -E" and "cc -E" omit #line directives for header files
+            dnl that contain only a #include of other header files and no
+            dnl non-comment tokens of their own. This leads to a failure to
+            dnl detect the absolute name of <dirent.h>, <signal.h>, <poll.h>
+            dnl and others. The workaround is to force preservation of comments
+            dnl through option -C. This ensures all necessary #line directives
+            dnl are present. GCC supports option -C as well.
+            case "$host_os" in
+              aix*) gl_absname_cpp="$ac_cpp -C" ;;
+              *)    gl_absname_cpp="$ac_cpp" ;;
+            esac
+            dnl eval is necessary to expand gl_absname_cpp.
+            dnl Ultrix and Pyramid sh refuse to redirect output of eval,
+            dnl so use subshell.
+            AS_VAR_SET([gl_next_header],
+              ['"'`(eval "$gl_absname_cpp conftest.$ac_ext") 2>&AS_MESSAGE_LOG_FD |
+               sed -n '\#/]m4_defn([gl_HEADER_NAME])[#{
+                 s#.*"\(.*/]m4_defn([gl_HEADER_NAME])[\)".*#\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_defn([gl_HEADER_NAME])),