kern/163619: OFED failed to build with clang

[tplou at lbl.gov]

>Number:         163619
>Category:       kern
>Synopsis:       OFED failed to build with clang
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    freebsd-bugs
>State:          open
>Quarter:        
>Keywords:       
>Date-Required:
>Class:          sw-bug
>Submitter-Id:   current-users
>Arrival-Date:   Mon Dec 26 00:10:10 UTC 2011
>Closed-Date:
>Last-Modified:
>Originator:     User
>Release:        FreeBSD 9.0-RC3 amd64
>Organization:
N/A
>Environment:
System: FreeBSD 9.0-RC3 FreeBSD 9.0-RC3 #0 r228312: Tue Dec 6 10:22:33 PST 2011 root@:/usr/obj/usr/src/sys/GENERIC amd64


>Description:
When try to build r228873 with WITH_OFED=YES, it fails with the following error:

@/sys/cdefs.h:148:23: note: expanded from:
...
#define __CONCAT(x,y)   x/**/y
                        ^
fatal error: too many errors emitted, stopping now [-ferror-limit=]
3 warnings and 20 errors generated.
*** Error code 1
In file included from /usr/src/sys/modules/mlx4/../../ofed/drivers/net/mlx4/cmd.c:36:
In file included from /usr/src/sys/modules/mlx4/../../ofed/include/linux/pci.h:48:
In file included from /usr/src/sys/modules/mlx4/../../ofed/include/linux/dmapool.h:35:
In file included from /usr/src/sys/modules/mlx4/../../ofed/include/linux/device.h:36:
In file included from /usr/src/sys/modules/mlx4/../../ofed/include/linux/module.h:47:
In file included from @/sys/linker.h:34:
In file included from ./machine/elf.h:42:
@/sys/elf_generic.h:58:1: error: unknown type name 'Elf'
__ElfType(Addr);
^
@/sys/elf_generic.h:56:30: note: expanded from:
#define __ElfType(x)    typedef __ElfN(x) __CONCAT(Elf_,x)
                                ^
@/sys/elf_generic.h:54:46: note: expanded from:
#define __ElfN(x)       __CONCAT(__CONCAT(__CONCAT(Elf,__ELF_WORD_SIZE),_),x)
                                                   ^
@/sys/cdefs.h:148:23: note: expanded from:
#define __CONCAT(x,y)   x/**/y
                        ^
@/sys/cdefs.h:148:23: note: expanded from:
#define __CONCAT(x,y)   x/**/y
                        ^
@/sys/cdefs.h:148:23: note: expanded from:
#define __CONCAT(x,y)   x/**/y
                        ^
In file included from /usr/src/sys/modules/mlx4/../../ofed/drivers/net/mlx4/cmd.c:36:
In file included from /usr/src/sys/modules/mlx4/../../ofed/include/linux/pci.h:48:
In file included from /usr/src/sys/modules/mlx4/../../ofed/include/linux/dmapool.h:35:
In file included from /usr/src/sys/modules/mlx4/../../ofed/include/linux/device.h:36:
In file included from /usr/src/sys/modules/mlx4/../../ofed/include/linux/module.h:47:
In file included from @/sys/linker.h:34:
In file included from ./machine/elf.h:42:
@/sys/elf_generic.h:58:1: error: expected identifier or '('
__ElfType(Addr);
^
@/sys/elf_generic.h:56:30: note: expanded from:
#define __ElfType(x)    typedef __ElfN(x) __CONCAT(Elf_,x)
                                ^
@/sys/elf_generic.h:54:50: note: expanded from:
#define __ElfN(x)       __CONCAT(__CONCAT(__CONCAT(Elf,__ELF_WORD_SIZE),_),x)
                                                       ^
./machine/elf.h:38:25: note: expanded from:
#define __ELF_WORD_SIZE 64      /* Used by <sys/elf_generic.h> */
                        ^
@/sys/cdefs.h:148:28: note: expanded from:
#define __CONCAT(x,y)   x/**/y
                             ^
@/sys/cdefs.h:148:23: note: expanded from:
#define __CONCAT(x,y)   x/**/y
                        ^
@/sys/cdefs.h:148:23: note: expanded from:
#define __CONCAT(x,y)   x/**/y
                        ^
In file included from /usr/src/sys/modules/mlx4/../../ofed/drivers/net/mlx4/cmd.c:36:
In file included from /usr/src/sys/modules/mlx4/../../ofed/include/linux/pci.h:48:
In file included from /usr/src/sys/modules/mlx4/../../ofed/include/linux/dmapool.h:35:
In file included from /usr/src/sys/modules/mlx4/../../ofed/include/linux/device.h:36:
In file included from /usr/src/sys/modules/mlx4/../../ofed/include/linux/module.h:47:
In file included from @/sys/linker.h:34:
In file included from ./machine/elf.h:42:
@/sys/elf_generic.h:59:1: error: unknown type name 'Elf'
__ElfType(Half);
^
@/sys/elf_generic.h:56:30: note: expanded from:
#define __ElfType(x)    typedef __ElfN(x) __CONCAT(Elf_,x)
                                ^
@/sys/elf_generic.h:54:46: note: expanded from:
#define __ElfN(x)       __CONCAT(__CONCAT(__CONCAT(Elf,__ELF_WORD_SIZE),_),x)
                                                   ^
@/sys/cdefs.h:148:23: note: expanded from:
#define __CONCAT(x,y)   x/**/y
                        ^
@/sys/cdefs.h:148:23: note: expanded from:
#define __CONCAT(x,y)   x/**/y
                        ^
@/sys/cdefs.h:148:23: note: expanded from:
#define __CONCAT(x,y)   x/**/y
                        ^
In file included from /usr/src/sys/modules/mlx4/../../ofed/drivers/net/mlx4/cmd.c:36:
In file included from /usr/src/sys/modules/mlx4/../../ofed/include/linux/pci.h:48:
In file included from /usr/src/sys/modules/mlx4/../../ofed/include/linux/dmapool.h:35:
In file included from /usr/src/sys/modules/mlx4/../../ofed/include/linux/device.h:36:
In file included from /usr/src/sys/modules/mlx4/../../ofed/include/linux/module.h:47:
In file included from @/sys/linker.h:34:
In file included from ./machine/elf.h:42:
@/sys/elf_generic.h:59:1: error: expected identifier or '('
__ElfType(Half);
...

>How-To-Repeat:
Build the kernel with WITH_OFED=YES using clang.
>Fix:



>Release-Note:
>Audit-Trail:
>Unformatted: