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mirror of https://git.FreeBSD.org/src.git synced 2024-12-24 11:29:10 +00:00
freebsd/share/mk/bsd.obj.mk
Marcel Moolenaar 0815243c39 Add support for bmake. This includes:
1.  Don't do upgrade_checks when using bmake. As long as we have WITH_BMAKE,
    there's a bootstrap complication in ths respect. Avoid it. Make the
    necessary changes to have upgrade_checks work wth bmake anyway.
2.  Remove the use of -E. It's not needed in our build because we use ?= for
    the respective variables, which means that we'll take the environment
    value (if any) anyway.
3.  Properly declare phony targets as phony as bmake is a lot smarter (and
    thus agressive) about build avoidance.
4.  Make sure CLEANFILES is complete and use it on .NOPATH. bmake is a lot
    smarter about build avoidance and should not find files we generate in
    the source tree. We should not have files in the repository we want to
    generate, but this is an easier way to cross this hurdle.
5.  Have behavior under bmake the same as it is under make with respect to
    halting when sub-commands fail. Add "set -e" to compound commands so
    that bmake is informed when sub-commands fail.
6.  Make sure crunchgen uses the same make as the rest of the build. This
    is important when the make utility isn't called make (but bmake for
    example).
7.  While here, add support for using MAKEOBJDIR to set the object tree
    location. It's the second alternative bmake looks for when determining
    the actual object directory (= .OBJDIR).

Submitted by:	Simon Gerraty <sjg@juniper.net>
Submitted by:	John Van Horne <jvanhorne@juniper.net>
2012-10-06 20:01:05 +00:00

141 lines
3.5 KiB
Makefile

# $FreeBSD$
#
# The include file <bsd.obj.mk> handles creating the 'obj' directory
# and cleaning up object files, etc.
#
# +++ variables +++
#
# CLEANDIRS Additional directories to remove for the clean target.
#
# CLEANFILES Additional files to remove for the clean target.
#
# MAKEOBJDIR A pathname for the directory where the targets
# are built. Note: MAKEOBJDIR is an *environment* variable
# and works properly only if set as an environment variable,
# not as a global or command line variable!
#
# E.g. use `env MAKEOBJDIR=temp-obj make'
#
# MAKEOBJDIRPREFIX Specifies somewhere other than /usr/obj to root the object
# tree. Note: MAKEOBJDIRPREFIX is an *environment* variable
# and works properly only if set as an environment variable,
# not as a global or command line variable!
#
# E.g. use `env MAKEOBJDIRPREFIX=/somewhere/obj make'
#
# NO_OBJ Do not create object directories. This should not be set
# if anything is built.
#
# +++ targets +++
#
# clean:
# remove ${CLEANFILES}; remove ${CLEANDIRS} and all contents.
#
# cleandir:
# remove the build directory (and all its contents) created by obj
#
# obj:
# create build directory.
#
.if !target(__<bsd.obj.mk>__)
__<bsd.obj.mk>__:
.include <bsd.own.mk>
.if defined(MAKEOBJDIRPREFIX)
CANONICALOBJDIR:=${MAKEOBJDIRPREFIX}${.CURDIR}
.elif defined(MAKEOBJDIR) && ${MAKEOBJDIR:M/*} != ""
CANONICALOBJDIR:=${MAKEOBJDIR}
.else
CANONICALOBJDIR:=/usr/obj${.CURDIR}
.endif
#
# Warn of unorthodox object directory.
#
# The following directories are tried in order for ${.OBJDIR}:
#
# 1. ${MAKEOBJDIRPREFIX}/`pwd`
# 2. ${MAKEOBJDIR}
# 3. obj.${MACHINE}
# 4. obj
# 5. /usr/obj/`pwd`
# 6. ${.CURDIR}
#
# If ${.OBJDIR} is constructed using canonical cases 1 or 5, or
# case 2 (using MAKEOBJDIR), don't issue a warning. Otherwise,
# issue a warning differentiating between cases 6 and (3 or 4).
#
objwarn:
.if !defined(NO_OBJ) && ${.OBJDIR} != ${CANONICALOBJDIR} && \
!(defined(MAKEOBJDIRPREFIX) && exists(${CANONICALOBJDIR}/)) && \
!(defined(MAKEOBJDIR) && exists(${MAKEOBJDIR}/))
.if ${.OBJDIR} == ${.CURDIR}
@${ECHO} "Warning: Object directory not changed from original ${.CURDIR}"
.elif exists(${.CURDIR}/obj.${MACHINE}/) || exists(${.CURDIR}/obj/)
@${ECHO} "Warning: Using ${.OBJDIR} as object directory instead of\
canonical ${CANONICALOBJDIR}"
.endif
.endif
.if !defined(NO_OBJ)
.if !target(obj)
obj: .PHONY
@if ! test -d ${CANONICALOBJDIR}/; then \
mkdir -p ${CANONICALOBJDIR}; \
if ! test -d ${CANONICALOBJDIR}/; then \
${ECHO} "Unable to create ${CANONICALOBJDIR}."; \
exit 1; \
fi; \
${ECHO} "${CANONICALOBJDIR} created for ${.CURDIR}"; \
fi
.endif
.if !target(objlink)
objlink:
@if test -d ${CANONICALOBJDIR}/; then \
rm -f ${.CURDIR}/obj; \
ln -s ${CANONICALOBJDIR} ${.CURDIR}/obj; \
else \
echo "No ${CANONICALOBJDIR} to link to - do a make obj."; \
fi
.endif
.endif # !defined(NO_OBJ)
#
# where would that obj directory be?
#
.if !target(whereobj)
whereobj:
@echo ${.OBJDIR}
.endif
.if ${CANONICALOBJDIR} != ${.CURDIR} && exists(${CANONICALOBJDIR}/)
cleanobj:
@rm -rf ${CANONICALOBJDIR}
.else
cleanobj: clean cleandepend
.endif
@if [ -L ${.CURDIR}/obj ]; then rm -f ${.CURDIR}/obj; fi
# Tell bmake not to look for generated files via .PATH
.if !empty(CLEANFILES)
.NOPATH: ${CLEANFILES}
.endif
.if !target(clean)
clean:
.if defined(CLEANFILES) && !empty(CLEANFILES)
rm -f ${CLEANFILES}
.endif
.if defined(CLEANDIRS) && !empty(CLEANDIRS)
rm -rf ${CLEANDIRS}
.endif
.endif
cleandir: cleanobj
.include <bsd.subdir.mk>
.endif # !target(__<bsd.obj.mk>__)