share/mk/bsd.symver.mk

   1 # $FreeBSD$
   2
   3 .if !target(__<bsd.symver.mk>__)
   4 __<bsd.symver.mk>__:
   5
   6 .include <bsd.init.mk>
   7
   8 # Generate the version map given the version definitions
   9 # and symbol maps.
  10 .if ${MK_SYMVER} == "yes" && !empty(VERSION_DEF) && !empty(SYMBOL_MAPS)
  11 # Find the awk script that generates the version map.
  12 VERSION_GEN?=   version_gen.awk
  13 VERSION_MAP?=   Version.map
  14
  15 CLEANFILES+=    ${VERSION_MAP}
  16
  17 # Compute the make's -m path.
  18 _mpath=
  19 _oarg=
  20 .for _arg in ${.MAKEFLAGS}
  21 .if ${_oarg} == "-m"
  22 _mpath+= ${_arg}
  23 .endif
  24 _oarg=  ${_arg}
  25 .endfor
  26 _mpath+= /usr/share/mk
  27
  28 # Look up ${VERSION_GEN} in ${_mpath}.
  29 _vgen=
  30 .for path in ${_mpath}
  31 .if empty(_vgen)
  32 .if exists(${path}/${VERSION_GEN})
  33 _vgen=  ${path}/${VERSION_GEN}
  34 .endif
  35 .endif
  36 .endfor
  37 .if empty(_vgen)
  38 .error ${VERSION_GEN} not found in the search path.
  39 .endif
  40
  41 # Run the symbol maps through the C preprocessor before passing
  42 # them to the symbol version generator.
  43 ${VERSION_MAP}: ${VERSION_DEF} ${_vgen} ${SYMBOL_MAPS}
  44         cat ${SYMBOL_MAPS} | ${CPP} - - \
  45             | awk -v vfile=${VERSION_DEF} -f ${_vgen} > ${.TARGET}
  46 .endif  # !empty(VERSION_DEF) && !empty(SYMBOL_MAPS)
  47 .endif  # !target(__<bsd.symver.mk>__)