3748 zfs headers should be C++ compatible
Submitted by:   Justin Gibbs <justing@spectralogic.com>
Submitted by:   Will Andrews <willa@spectralogic.com>
Reviewed by:    Matthew Ahrens <mahrens@delphix.com>

*** 25,34 ****
--- 25,35 ----
  # Copyright (c) 2012 by Delphix. All rights reserved.
  #
  
  PROG=           zfs
  OBJS=           zfs_main.o zfs_iter.o
+ OUTPUTS=        $(OBJS) zfs_hdrck.cpp zfs_hdrck.o
  SRCS=           $(OBJS:%.o=%.c)
  POFILES=        zfs_main.po zfs_iter.po
  POFILE=         zfs.po
  
  include ../Makefile.cmd
*** 67,89 ****
  
  .PARALLEL:
  
  all: $(PROG)
  
! $(PROG): $(OBJS)
          $(LINK.c) -o $@ $(OBJS) $(LDLIBS)
          $(POST_PROCESS)
  
  install: all $(ROOTSBINPROG) $(ROOTUSRSBINLINKS) $(USRLIBFSTYPELINKS) \
          $(ROOTETCFSTYPELINKS)
  
  $(POFILE): $(POFILES)
          $(RM) $@
          cat $(POFILES) > $@
  
  clean:
!         $(RM) $(OBJS)
  
  lint:   lint_SRCS
  
  # Links from /usr/sbin to /sbin
  $(ROOTUSRSBINLINKS):
--- 68,96 ----
  
  .PARALLEL:
  
  all: $(PROG)
  
! $(PROG): $(OUTPUTS)
          $(LINK.c) -o $@ $(OBJS) $(LDLIBS)
          $(POST_PROCESS)
  
  install: all $(ROOTSBINPROG) $(ROOTUSRSBINLINKS) $(USRLIBFSTYPELINKS) \
          $(ROOTETCFSTYPELINKS)
  
+ zfs_hdrck.o: zfs_hdrck.cpp
+         $(COMPILE.cc) -o $@ $^
+ 
+ zfs_hdrck.cpp:
+         find . -name '*.[ch]' | xargs grep -h '^#include <' > $@
+ 
  $(POFILE): $(POFILES)
          $(RM) $@
          cat $(POFILES) > $@
  
  clean:
!         $(RM) $(PROG) $(OUTPUTS)
  
  lint:   lint_SRCS
  
  # Links from /usr/sbin to /sbin
  $(ROOTUSRSBINLINKS):