share/mk/bsd.obj.mk

   1 # $FreeBSD: src/share/mk/bsd.obj.mk,v 1.30.2.10 2003/02/15 05:36:25 kris Exp $
   2 # $DragonFly: src/share/mk/bsd.obj.mk,v 1.5 2005/10/08 11:31:29 corecode Exp $
   3 #
   4 # The include file <bsd.obj.mk> handles creating the 'obj' directory
   5 # and cleaning up object files, etc.
   6 #
   7 # +++ variables +++
   8 #
   9 # CLEANDIRS     Additional directories to remove for the clean target.
  10 #
  11 # CLEANFILES    Additional files to remove for the clean target.
  12 #
  13 # MAKEOBJDIR    A pathname for the directory where the targets
  14 #               are built.  Note: MAKEOBJDIR is an *environment* variable
  15 #               and works properly only if set as an environment variable,
  16 #               not as a global or command line variable!
  17 #
  18 #               E.g. use `env MAKEOBJDIR=temp-obj make'
  19 #
  20 # MAKEOBJDIRPREFIX  Specifies somewhere other than /usr/obj to root the object
  21 #               tree.  Note: MAKEOBJDIRPREFIX is an *environment* variable
  22 #               and works properly only if set as an environment variable,
  23 #               not as a global or command line variable!
  24 #
  25 #               E.g. use `env MAKEOBJDIRPREFIX=/somewhere/obj make'
  26 #
  27 # NOOBJ         Do not create object directories.  This should not be set
  28 #               if anything is built.
  29 #
  30 # +++ targets +++
  31 #
  32 #       clean:
  33 #               remove ${CLEANFILES}; remove ${CLEANDIRS} and all contents.
  34 #
  35 #       cleandir:
  36 #               remove the build directory (and all its contents) created by obj
  37 #
  38 #       obj:
  39 #               create build directory.
  40 #
  41
  42 .if !target(__<bsd.obj.mk>__)
  43 __<bsd.obj.mk>__:
  44 .include <bsd.own.mk>
  45
  46 .if defined(MAKEOBJDIRPREFIX)
  47 CANONICALOBJDIR:=${MAKEOBJDIRPREFIX}${.CURDIR}
  48 .else
  49 CANONICALOBJDIR:=/usr/obj${.CURDIR}
  50 .endif
  51
  52 #
  53 # Warn of unorthodox object directory.
  54 #
  55 # The following directories are tried in order for ${.OBJDIR}:
  56 #
  57 # 1.  ${MAKEOBJDIRPREFIX}/`pwd`
  58 # 2.  ${MAKEOBJDIR}
  59 # 3.  obj.${MACHINE}
  60 # 4.  obj
  61 # 5.  /usr/obj/`pwd`
  62 # 6.  ${.CURDIR}
  63 #
  64 # If ${.OBJDIR} is constructed using canonical cases 1 or 5, or
  65 # case 2 (using MAKEOBJDIR), don't issue a warning.  Otherwise,
  66 # issue a warning differentiating between cases 6 and (3 or 4).
  67 #
  68 objwarn:
  69 .if !defined(NOOBJ) && ${.OBJDIR} != ${CANONICALOBJDIR} && \
  70     !(defined(MAKEOBJDIRPREFIX) && exists(${CANONICALOBJDIR}/)) && \
  71     !(defined(MAKEOBJDIR) && exists(${MAKEOBJDIR}/))
  72 .if ${.OBJDIR} == ${.CURDIR}
  73         @${ECHO} "Warning: Object directory not changed from original ${.CURDIR}"
  74 .elif exists(${.CURDIR}/obj.${MACHINE}/) || exists(${.CURDIR}/obj/)
  75         @${ECHO} "Warning: Using ${.OBJDIR} as object directory instead of\
  76                 canonical ${CANONICALOBJDIR}"
  77 .endif
  78 .endif
  79
  80 .if !defined(NOOBJ)
  81 .if !target(obj)
  82 obj:
  83         @if ! test -d ${CANONICALOBJDIR}/; then \
  84                 mkdir -p ${CANONICALOBJDIR}; \
  85                 if ! test -d ${CANONICALOBJDIR}/; then \
  86                         ${ECHO} "Unable to create ${CANONICALOBJDIR}."; \
  87                         exit 1; \
  88                 fi; \
  89                 ${ECHO} "${CANONICALOBJDIR} created for ${.CURDIR}"; \
  90         fi
  91 .endif
  92
  93 .if !target(objlink)
  94 objlink:
  95         @if test -d ${CANONICALOBJDIR}/; then \
  96                 rm -f ${.CURDIR}/obj; \
  97                 ${LN} -s ${CANONICALOBJDIR} ${.CURDIR}/obj; \
  98         else \
  99                 echo "No ${CANONICALOBJDIR} to link to - do a make obj."; \
 100         fi
 101 .endif
 102 .endif # !defined(NOOBJ)
 103
 104 #
 105 # where would that obj directory be?
 106 #
 107 .if !target(whereobj)
 108 whereobj:
 109         @echo ${.OBJDIR}
 110 .endif
 111
 112 cleanobj:
 113 .if ${CANONICALOBJDIR} != ${.CURDIR} && exists(${CANONICALOBJDIR}/)
 114         rm -rf ${CANONICALOBJDIR}
 115 .else
 116         @cd ${.CURDIR} && ${MAKE} clean cleandepend
 117 .endif
 118         @if [ -L ${.CURDIR}/obj ]; then \
 119           echo rm -f ${.CURDIR}/obj; \
 120           rm -f ${.CURDIR}/obj; \
 121         fi
 122
 123 .if !target(clean)
 124 clean:
 125 .if defined(CLEANFILES) && !empty(CLEANFILES)
 126         rm -f ${CLEANFILES}
 127 .endif
 128 .if defined(CLEANDIRS) && !empty(CLEANDIRS)
 129         rm -rf ${CLEANDIRS}
 130 .endif
 131 .endif
 132
 133 cleandir: cleanobj
 134
 135 .include <bsd.subdir.mk>
 136
 137 .endif # !target(__<bsd.obj.mk>__)