sys/conf/kern.fwd.mk

   1 # $DragonFly: src/sys/conf/kern.fwd.mk,v 1.7 2007/01/10 17:41:37 corecode Exp $
   2
   3 # Create forwarding headers for ${SYSDIR}/cpu/${MACHINE_ARCH}/*.h in
   4 # ${_MACHINE_FWD}/include/machine and share the directory among module build
   5 # directories.
   6 # Define _MACHINE_FWD before inclusion of this file.
   7 .if !defined(_MACHINE_FWD)
   8 .error you must define _MACHINE_FWD in which to generate forwarding headers.
   9 .endif
  10
  11 # _FWDHDRS fills in missing <machine/BLAH.h> headers from <cpu/BLAH.h>,
  12 # allowing us to omit forwarding-only header files in each platform
  13 # architecture's machine/ directory.
  14 #
  15 _cpu_hdrs!=     echo ${SYSDIR}/cpu/${MACHINE_ARCH}/include/*.h
  16 _FWDHDRS=
  17 .for _h in ${_cpu_hdrs}
  18 _fwd:=  ${_MACHINE_FWD}/include/machine/${_h:T}
  19 _FWDHDRS:=      ${_FWDHDRS} ${_fwd}
  20 ${_fwd}: ${_h}
  21 .endfor
  22
  23 # _LHDRS mimics _LHDRS from /usr/src/include/Makefile, directly linking
  24 # sys/BLAH.h as <BLAH.h> for certain header files.  These are used to
  25 # mimic a standard user include topology.  Only the virtual kernel
  26 # build uses these.  e.g. in order for #include <fcntl.h> to work.
  27 #
  28 _lhdrs= aio.h errno.h fcntl.h linker_set.h poll.h syslog.h \
  29         termios.h ucontext.h
  30 _LHDRS=
  31 .for _h in ${_lhdrs}
  32 _fwd:=  ${_MACHINE_FWD}/include/${_h}
  33 _LHDRS:=        ${_LHDRS} ${_fwd}
  34 ${_fwd}: ${SYSDIR}/sys/${_h}
  35 .endfor
  36
  37 .ORDER: ${_MACHINE_FWD}/include/machine ${_FWDHDRS} ${_LHDRS}
  38
  39 ${_MACHINE_FWD} ${_MACHINE_FWD}/include/machine:
  40         @mkdir -p ${.TARGET}
  41
  42 FORWARD_HEADERS_COOKIE= ${_MACHINE_FWD}/.done
  43 ${FORWARD_HEADERS_COOKIE}: ${_MACHINE_FWD}/include/machine ${_FWDHDRS} ${_LHDRS}
  44         @touch ${.TARGET}
  45
  46 ${_FWDHDRS}:
  47         @(echo "creating machine/ forwarding header ${.TARGET}" 1>&2; \
  48         echo "/*" ; \
  49         echo " * CONFIG-GENERATED FILE, DO NOT EDIT" ; \
  50         echo " */" ; \
  51         echo ; \
  52         echo "#ifndef _MACHINE_${.TARGET:T:S/./_/g:U}_" ; \
  53         echo "#define _MACHINE_${.TARGET:T:S/./_/g:U}_" ; \
  54         echo "#include <cpu/${.TARGET:T}>" ; \
  55         echo "#endif" ; \
  56         echo) > ${.TARGET}
  57
  58 ${_LHDRS}:
  59         @(echo "creating sys/ forwarding header ${.TARGET}" 1>&2; \
  60         echo "/*" ; \
  61         echo " * CONFIG-GENERATED FILE, DO NOT EDIT" ; \
  62         echo " */" ; \
  63         echo ; \
  64         echo "#ifndef _${.TARGET:T:S/./_/g:U}_" ; \
  65         echo "#define _${.TARGET:T:S/./_/g:U}_" ; \
  66         echo "#include <sys/${.TARGET:T}>" ; \
  67         echo "#endif" ; \
  68         echo) > ${.TARGET}
  69