ports/167652: lang/gcc: Missing include files.

[Christian Mangin]

>Number:         167652
>Category:       ports
>Synopsis:       lang/gcc: Missing include files.
>Confidential:   no
>Severity:       non-critical
>Priority:       low
>Responsible:    freebsd-ports-bugs
>State:          open
>Quarter:        
>Keywords:       
>Date-Required:
>Class:          change-request
>Submitter-Id:   current-users
>Arrival-Date:   Sun May 06 19:50:11 UTC 2012
>Closed-Date:
>Last-Modified:
>Originator:     Christian Mangin
>Release:        FreeBSD 9.0-RELEASE-p1 amd64
>Organization:
>Environment:
System: FreeBSD titan 9.0-RELEASE-p1


>Description:
The stddef.h header file included with lang/gcc refers to sys/_types.h
which only exists in the base system. When compiling with -nostdinc
the compilation aborts with the error below. 

I can't override '-nostdinc' because it creates type definition conflicts
when trying to compile this particular port. (It's the bazaar version of grub2)
	
>How-To-Repeat:
test.c:

#include <stddef.h>
int main() 
{
        return 0;
}

gcc46 -nostdinc -I/usr/local/lib/gcc46/gcc/x86_64-portbld-freebsd9.0/4.6.3/include test.c

In file included from test.c:1:0:
/usr/local/lib/gcc46/gcc/x86_64-portbld-freebsd9.0/4.6.3/include/stddef.h:59:24: fatal error: sys/_types.h: No such file or directory
compilation terminated.

>Fix:

As a workaround I've been able to successfully build the port by adding symlinks to
/usr/include/sys and /usr/include/machine. The specific files that stddef.h wants are:

sys/_types.h
sys/cdefs.h
machine/_types.h
 
>Release-Note:
>Audit-Trail:
>Unformatted: