diff options
Diffstat (limited to 'gl/m4/include_next.m4')
| -rw-r--r-- | gl/m4/include_next.m4 | 21 |
1 files changed, 11 insertions, 10 deletions
diff --git a/gl/m4/include_next.m4 b/gl/m4/include_next.m4 index 062753c..d6101fe 100644 --- a/gl/m4/include_next.m4 +++ b/gl/m4/include_next.m4 | |||
| @@ -1,5 +1,5 @@ | |||
| 1 | # include_next.m4 serial 10 | 1 | # include_next.m4 serial 12 |
| 2 | dnl Copyright (C) 2006-2008 Free Software Foundation, Inc. | 2 | dnl Copyright (C) 2006-2009 Free Software Foundation, Inc. |
| 3 | dnl This file is free software; the Free Software Foundation | 3 | dnl This file is free software; the Free Software Foundation |
| 4 | dnl gives unlimited permission to copy and/or distribute it, | 4 | dnl gives unlimited permission to copy and/or distribute it, |
| 5 | dnl with or without modifications, as long as this notice is preserved. | 5 | dnl with or without modifications, as long as this notice is preserved. |
| @@ -32,14 +32,15 @@ AC_DEFUN([gl_INCLUDE_NEXT], | |||
| 32 | [gl_cv_have_include_next], | 32 | [gl_cv_have_include_next], |
| 33 | [rm -rf conftestd1a conftestd1b conftestd2 | 33 | [rm -rf conftestd1a conftestd1b conftestd2 |
| 34 | mkdir conftestd1a conftestd1b conftestd2 | 34 | mkdir conftestd1a conftestd1b conftestd2 |
| 35 | dnl The include of <stdio.h> is because IBM C 9.0 on AIX 6.1 supports | 35 | dnl IBM C 9.0, 10.1 (original versions, prior to the 2009-01 updates) on |
| 36 | dnl include_next when used as first preprocessor directive in a file, | 36 | dnl AIX 6.1 support include_next when used as first preprocessor directive |
| 37 | dnl but not when preceded by another include directive. Additionally, | 37 | dnl in a file, but not when preceded by another include directive. Check |
| 38 | dnl with this same compiler, include_next is a no-op when used in a | 38 | dnl for this bug by including <stdio.h>. |
| 39 | dnl header file that was included by specifying its absolute file name. | 39 | dnl Additionally, with this same compiler, include_next is a no-op when |
| 40 | dnl Despite these two bugs, include_next is used in the compiler's | 40 | dnl used in a header file that was included by specifying its absolute |
| 41 | dnl <math.h>. By virtue of the second bug, we need to use include_next | 41 | dnl file name. Despite these two bugs, include_next is used in the |
| 42 | dnl as well in this case. | 42 | dnl compiler's <math.h>. By virtue of the second bug, we need to use |
| 43 | dnl include_next as well in this case. | ||
| 43 | cat <<EOF > conftestd1a/conftest.h | 44 | cat <<EOF > conftestd1a/conftest.h |
| 44 | #define DEFINED_IN_CONFTESTD1 | 45 | #define DEFINED_IN_CONFTESTD1 |
| 45 | #include_next <conftest.h> | 46 | #include_next <conftest.h> |