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 #
   3 # The include file <bsd.obj.mk> handles creating the 'obj' directory
   4 # and cleaning up object files, etc.
   5 #
   6 # +++ variables +++
   7 #
   8 # CLEANDIRS     Additional directories to remove for the clean target.
   9 #
  10 # CLEANFILES    Additional files to remove for the clean target.
  11 #
  12 # MAKEOBJDIR    A pathname for the directory where the targets
  13 #               are built.  Note: MAKEOBJDIR is an *environment* variable
  14 #               and works properly only if set as an environment variable,
  15 #               not as a global or command line variable!
  16 #
  17 #               E.g. use `env MAKEOBJDIR=temp-obj make'
  18 #
  19 # MAKEOBJDIRPREFIX  Specifies somewhere other than /usr/obj to root the object
  20 #               tree.  Note: MAKEOBJDIRPREFIX is an *environment* variable
  21 #               and works properly only if set as an environment variable,
  22 #               not as a global or command line variable!
  23 #
  24 #               E.g. use `env MAKEOBJDIRPREFIX=/somewhere/obj make'
  25 #
  26 # NOOBJ         Do not create object directories.  This should not be set
  27 #               if anything is built.
  28 #
  29 # +++ targets +++
  30 #
  31 #       clean:
  32 #               remove ${CLEANFILES}; remove ${CLEANDIRS} and all contents.
  33 #
  34 #       cleandir:
  35 #               remove the build directory (and all its contents) created by obj
  36 #
  37 #       obj:
  38 #               create build directory.
  39 #
  40
  41 .if !target(__<bsd.obj.mk>__)
  42 __<bsd.obj.mk>__:
  43 .include <bsd.own.mk>
  44
  45 .if defined(MAKEOBJDIRPREFIX)
  46 CANONICALOBJDIR:=${MAKEOBJDIRPREFIX}${.CURDIR}
  47 .elif defined(MAKEOBJDIR) && ${MAKEOBJDIR:M/*} != ""
  48 CANONICALOBJDIR:=${MAKEOBJDIR}
  49 .else
  50 CANONICALOBJDIR:=/usr/obj${.CURDIR}
  51 .endif
  52
  53 #
  54 # Warn of unorthodox object directory.
  55 #
  56 # The following directories are tried in order for ${.OBJDIR}:
  57 #
  58 # 1.  ${MAKEOBJDIRPREFIX}/`pwd`
  59 # 2.  ${MAKEOBJDIR}
  60 # 3.  obj.${MACHINE}
  61 # 4.  obj
  62 # 5.  /usr/obj/`pwd`
  63 # 6.  ${.CURDIR}
  64 #
  65 # If ${.OBJDIR} is constructed using canonical cases 1 or 5, or
  66 # case 2 (using MAKEOBJDIR), don't issue a warning.  Otherwise,
  67 # issue a warning differentiating between cases 6 and (3 or 4).
  68 #
  69 objwarn:
  70 .if !defined(NOOBJ) && ${.OBJDIR} != ${CANONICALOBJDIR} && \
  71     !(defined(MAKEOBJDIRPREFIX) && exists(${CANONICALOBJDIR}/)) && \
  72     !(defined(MAKEOBJDIR) && exists(${MAKEOBJDIR}/))
  73 .if ${.OBJDIR} == ${.CURDIR}
  74         @${ECHO} "Warning: Object directory not changed from original ${.CURDIR}"
  75 .elif exists(${.CURDIR}/obj.${MACHINE}/) || exists(${.CURDIR}/obj/)
  76         @${ECHO} "Warning: Using ${.OBJDIR} as object directory instead of\
  77                 canonical ${CANONICALOBJDIR}"
  78 .endif
  79 .endif
  80
  81 .if !defined(NOOBJ)
  82 .if !target(obj)
  83 obj:
  84         @if ! test -d ${CANONICALOBJDIR}/; then \
  85                 mkdir -p ${CANONICALOBJDIR}; \
  86                 if ! test -d ${CANONICALOBJDIR}/; then \
  87                         ${ECHO} "Unable to create ${CANONICALOBJDIR}."; \
  88                         exit 1; \
  89                 fi; \
  90                 ${ECHO} "${CANONICALOBJDIR} created for ${.CURDIR}"; \
  91         fi
  92 .endif
  93
  94 .if !target(objlink)
  95 objlink:
  96         @if test -d ${CANONICALOBJDIR}/; then \
  97                 rm -f ${.CURDIR}/obj; \
  98                 ${LN} -s ${CANONICALOBJDIR} ${.CURDIR}/obj; \
  99         else \
 100                 echo "No ${CANONICALOBJDIR} to link to - do a make obj."; \
 101         fi
 102 .endif
 103 .endif # !defined(NOOBJ)
 104
 105 #
 106 # where would that obj directory be?
 107 #
 108 .if !target(whereobj)
 109 whereobj:
 110         @echo ${.OBJDIR}
 111 .endif
 112
 113 cleanobj:
 114 .if ${CANONICALOBJDIR} != ${.CURDIR} && exists(${CANONICALOBJDIR}/)
 115         rm -rf ${CANONICALOBJDIR}
 116 .else
 117         @cd ${.CURDIR} && ${MAKE} clean cleandepend
 118 .endif
 119         @if [ -L ${.CURDIR}/obj ]; then \
 120           echo rm -f ${.CURDIR}/obj; \
 121           rm -f ${.CURDIR}/obj; \
 122         fi
 123
 124 # Tell bmake not to look for generated files via .PATH
 125 .if !empty(CLEANFILES)
 126 .NOPATH: ${CLEANFILES}
 127 .endif
 128
 129 .if !target(clean)
 130 clean:
 131 .if defined(CLEANFILES) && !empty(CLEANFILES)
 132         rm -f ${CLEANFILES}
 133 .endif
 134 .if defined(CLEANDIRS) && !empty(CLEANDIRS)
 135         rm -rf ${CLEANDIRS}
 136 .endif
 137 .endif
 138
 139 cleandir: cleanobj
 140
 141 .include <bsd.subdir.mk>
 142
 143 .endif # !target(__<bsd.obj.mk>__)