Re: lib/fcntl.in.h fails on AIX 6.1

[Bruno Haible]

Albert Chin wrote:
> The patch below would work around this and disable #include_next on this
> platform.
> 
> -- 
> albert chin (address@hidden)
> 
> -- snip snip
> diff --git a/m4/include_next.m4 b/m4/include_next.m4
> index 08c63db..f0f947b 100644
> --- a/m4/include_next.m4
> +++ b/m4/include_next.m4
> @@ -30,6 +30,7 @@ AC_DEFUN([gl_INCLUDE_NEXT],
>       mkdir conftestd1 conftestd2
>       cat <<EOF > conftestd1/conftest.h
>  #define DEFINED_IN_CONFTESTD1
> +#include <stdio.h>
>  #include_next <conftest.h>
>  #ifdef DEFINED_IN_CONFTESTD2
>  int foo;

Many thanks! Much appreciated. Applied with some comments, like this:


2008-09-04  Albert Chin <address@hidden>
            Bruno Haible  <address@hidden>

        * m4/include_next.m4 (gl_INCLUDE_NEXT): Add check whether #include_next
        also works after #include directives.

*** m4/include_next.m4.orig     2008-09-05 00:46:53.000000000 +0200
--- m4/include_next.m4  2008-09-05 00:44:57.000000000 +0200
***************
*** 1,4 ****
! # include_next.m4 serial 7
  dnl Copyright (C) 2006-2008 Free Software Foundation, Inc.
  dnl This file is free software; the Free Software Foundation
  dnl gives unlimited permission to copy and/or distribute it,
--- 1,4 ----
! # include_next.m4 serial 8
  dnl Copyright (C) 2006-2008 Free Software Foundation, Inc.
  dnl This file is free software; the Free Software Foundation
  dnl gives unlimited permission to copy and/or distribute it,
***************
*** 28,35 ****
--- 28,39 ----
      [gl_cv_have_include_next],
      [rm -rf conftestd1 conftestd2
       mkdir conftestd1 conftestd2
+      dnl The include of <stdio.h> is because IBM C 9.0 on AIX 6.1 supports
+      dnl include_next when used as first preprocessor directive in a file,
+      dnl but not when preceded by another include directive.
       cat <<EOF > conftestd1/conftest.h
  #define DEFINED_IN_CONFTESTD1
+ #include <stdio.h>
  #include_next <conftest.h>
  #ifdef DEFINED_IN_CONFTESTD2
  int foo;