sys/conf/kern.fwd.mk

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