share/mk/bsd.obj.mk

   1 # $FreeBSD$
   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 # NO_OBJ        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}${.CURDIR}
  47 .else
  48 CANONICALOBJDIR:=/usr/obj${.CURDIR}
  49 .endif
  50
  51 #
  52 # Warn of unorthodox object directory.
  53 #
  54 # The following directories are tried in order for ${.OBJDIR}:
  55 #
  56 # 1.  ${MAKEOBJDIRPREFIX}/`pwd`
  57 # 2.  ${MAKEOBJDIR}
  58 # 3.  obj.${MACHINE}
  59 # 4.  obj
  60 # 5.  /usr/obj/`pwd`
  61 # 6.  ${.CURDIR}
  62 #
  63 # If ${.OBJDIR} is constructed using canonical cases 1 or 5, or
  64 # case 2 (using MAKEOBJDIR), don't issue a warning.  Otherwise,
  65 # issue a warning differentiating between cases 6 and (3 or 4).
  66 #
  67 objwarn:
  68 .if !defined(NO_OBJ) && ${.OBJDIR} != ${CANONICALOBJDIR} && \
  69     !(defined(MAKEOBJDIRPREFIX) && exists(${CANONICALOBJDIR}/)) && \
  70     !(defined(MAKEOBJDIR) && exists(${MAKEOBJDIR}/))
  71 .if ${.OBJDIR} == ${.CURDIR}
  72         @${ECHO} "Warning: Object directory not changed from original ${.CURDIR}"
  73 .elif exists(${.CURDIR}/obj.${MACHINE}/) || exists(${.CURDIR}/obj/)
  74         @${ECHO} "Warning: Using ${.OBJDIR} as object directory instead of\
  75                 canonical ${CANONICALOBJDIR}"
  76 .endif
  77 .endif
  78
  79 .if !defined(NO_OBJ)
  80 .if !target(obj)
  81 obj: .PHONY
  82         @if ! test -d ${CANONICALOBJDIR}/; then \
  83                 mkdir -p ${CANONICALOBJDIR}; \
  84                 if ! test -d ${CANONICALOBJDIR}/; then \
  85                         ${ECHO} "Unable to create ${CANONICALOBJDIR}."; \
  86                         exit 1; \
  87                 fi; \
  88                 ${ECHO} "${CANONICALOBJDIR} created for ${.CURDIR}"; \
  89         fi
  90 .endif
  91
  92 .if !target(objlink)
  93 objlink:
  94         @if test -d ${CANONICALOBJDIR}/; then \
  95                 rm -f ${.CURDIR}/obj; \
  96                 ln -s ${CANONICALOBJDIR} ${.CURDIR}/obj; \
  97         else \
  98                 echo "No ${CANONICALOBJDIR} to link to - do a make obj."; \
  99         fi
 100 .endif
 101 .endif # !defined(NO_OBJ)
 102
 103 #
 104 # where would that obj directory be?
 105 #
 106 .if !target(whereobj)
 107 whereobj:
 108         @echo ${.OBJDIR}
 109 .endif
 110
 111 .if ${CANONICALOBJDIR} != ${.CURDIR} && exists(${CANONICALOBJDIR}/)
 112 cleanobj:
 113         @rm -rf ${CANONICALOBJDIR}
 114 .else
 115 cleanobj: clean cleandepend
 116 .endif
 117         @if [ -L ${.CURDIR}/obj ]; then rm -f ${.CURDIR}/obj; fi
 118
 119 .if !target(clean)
 120 clean:
 121 .if defined(CLEANFILES) && !empty(CLEANFILES)
 122         rm -f ${CLEANFILES}
 123 .endif
 124 .if defined(CLEANDIRS) && !empty(CLEANDIRS)
 125         rm -rf ${CLEANDIRS}
 126 .endif
 127 .endif
 128
 129 cleandir: cleanobj
 130
 131 .include <bsd.subdir.mk>
 132
 133 .endif # !target(__<bsd.obj.mk>__)