System headers with clang?

I had gotten a PR about sysutils/lsof not compiling with clang.  I had
Vic Abell check it out, and the problem is NOT with lsof per se, but
with the system headers.

Is there a project afoot to update the system headers to make them clang 
compilable?

Output below.


=========================================================================================
(cd lib; make DEBUG="-O2" CFGF="-DHASEFFNLINK=i_effnlink -DHASF_VNODE -DHASSBSTATE -DHAS_KVM_VNODE -DHAS_UFS1_2 -DHAS_VM_MEMATTR_T
-DHAS_CDEV2PRIV -DHAS_NO_SI_UDEV -DHAS_SYS_SX_H -DHAS_ZFS -DHAS_V_LOCKF -DHAS_LOCKF_ENTRY -DHAS_NO_6PORT -DHAS_NO_6PPCB
-DNEEDS_BOOLEAN_T -DFREEBSDV=9000 -DHASFDESCFS=2 -DHASPSEUDOFS -DHASNULLFS -DHASIPv6 -DHASUTMPX -DHAS_STRFTIME
-DLSOF_VSTR=\"9.0-BETA3\"")
clang  -DHASEFFNLINK=i_effnlink -DHASF_VNODE -DHASSBSTATE -DHAS_KVM_VNODE -DHAS_UFS1_2 -DHAS_VM_MEMATTR_T -DHAS_CDEV2PRIV
-DHAS_NO_SI_UDEV -DHAS_SYS_SX_H -DHAS_ZFS -DHAS_V_LOCKF -DHAS_LOCKF_ENTRY -DHAS_NO_6PORT -DHAS_NO_6PPCB -DNEEDS_BOOLEAN_T
-DFREEBSDV=9000 -DHASFDESCFS=2 -DHASPSEUDOFS -DHASNULLFS -DHASIPv6 -DHASUTMPX -DHAS_STRFTIME -DLSOF_VSTR="9.0-BETA3" -I/usr/src/sys
-O2 -c ckkv.c
In file included from ckkv.c:43:
In file included from ./../lsof.h:195:
In file included from ./../dlsof.h:190:
In file included from /usr/src/sys/ufs/ufs/ufsmount.h:36:
/usr/src/sys/sys/buf.h:388:2: warning: implicit declaration of function 'KASSERT' is invalid in C99
[-Wimplicit-function-declaration]
         KASSERT(bp->b_bufobj != NULL, ("bwrite: no bufobj bp=%p", bp));
         ^
/usr/src/sys/sys/buf.h:388:33: warning: expression result unused [-Wunused-value]
         KASSERT(bp->b_bufobj != NULL, ("bwrite: no bufobj bp=%p", bp));
                                        ^~~~~~~~~~~~~~~~~~~~~~~~~
/usr/src/sys/sys/buf.h:389:41: warning: expression result unused [-Wunused-value]
         KASSERT(bp->b_bufobj->bo_ops != NULL, ("bwrite: no bo_ops bp=%p", bp));
                                                ^~~~~~~~~~~~~~~~~~~~~~~~~
/usr/src/sys/sys/buf.h:391:7: warning: expression result unused [-Wunused-value]
             ("bwrite: no bop_write bp=%p", bp));
              ^~~~~~~~~~~~~~~~~~~~~~~~~~~~
/usr/src/sys/sys/buf.h:399:33: warning: expression result unused [-Wunused-value]
         KASSERT(bp->b_bufobj != NULL, ("bstrategy: no bufobj bp=%p", bp));
                                        ^~~~~~~~~~~~~~~~~~~~~~~~~~~~
/usr/src/sys/sys/buf.h:401:7: warning: expression result unused [-Wunused-value]
             ("bstrategy: no bo_ops bp=%p", bp));
              ^~~~~~~~~~~~~~~~~~~~~~~~~~~~
/usr/src/sys/sys/buf.h:403:7: warning: expression result unused [-Wunused-value]
             ("bstrategy: no bop_strategy bp=%p", bp));
              ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
In file included from ckkv.c:43:
In file included from ./../lsof.h:195:
In file included from ./../dlsof.h:432:
In file included from /usr/include/string.h:45:
/usr/include/strings.h:47:6: error: conflicting types for '__builtin_ffs'
int      ffs(int) __pure2;
          ^
/usr/include/machine/cpufunc.h:140:24: note: expanded from:
#define        ffs(x)  __builtin_ffs(x)
                        ^
/usr/include/strings.h:47:6: note: '__builtin_ffs' is a builtin with type 'int (unsigned int)'
7 warnings and 1 error generated.
*** Error code 1

Stop in /usr/home/abe/src/lsof485d/lib.
*** Error code 1

Stop in /usr/home/abe/src/lsof485d.


-- 
Larry Rosenman                     http://www.lerctr.org/~ler
Phone: +1 512-248-2683                 E-Mail: ler_at_lerctr.org
US Mail: 430 Valona Loop, Round Rock, TX 78681-3893