34ce63e5aa
This fixes parallel build issues when trying to depend on ${SUBDIR}. An
example of this in share/i18n/csmapper/Makefile where mapper.dir depends
on ${SUBDIR} having been traversed and built already. Before this
change running make in that directory would build the subdirectories
twice. This led to obscure build races. While reworking that build
may be possible, the framework should not so easily allow creating such
problems.
Now depending on <directory> will properly redirect to the
all_subdir_<directory> target rather than invoking the inline shell.
This also makes 'make -jX <directory>' now respect any
SUBDIR_DEPEND_<directory> statements when SUBDIR_PARALLEL is defined.
This is not entirely intended and may be changed later.
MFC after: 2 weeks
Sponsored by: EMC / Isilon Storage Division
184 lines
5.4 KiB
Makefile
184 lines
5.4 KiB
Makefile
# from: @(#)bsd.subdir.mk 5.9 (Berkeley) 2/1/91
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# $FreeBSD$
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#
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# The include file <bsd.subdir.mk> contains the default targets
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# for building subdirectories.
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#
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# For all of the directories listed in the variable SUBDIRS, the
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# specified directory will be visited and the target made. There is
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# also a default target which allows the command "make subdir" where
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# subdir is any directory listed in the variable SUBDIRS.
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#
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#
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# +++ variables +++
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#
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# DISTRIBUTION Name of distribution. [base]
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#
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# SUBDIR A list of subdirectories that should be built as well.
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# Each of the targets will execute the same target in the
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# subdirectories. SUBDIR.yes is automatically appended
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# to this list.
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#
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# +++ targets +++
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#
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# distribute:
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# This is a variant of install, which will
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# put the stuff into the right "distribution".
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#
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# See SUBDIR_TARGETS for list of targets that will recurse.
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#
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# Targets defined in STANDALONE_SUBDIR_TARGETS will always be ran
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# with SUBDIR_PARALLEL and will not respect .WAIT or SUBDIR_DEPEND_
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# values.
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#
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# SUBDIR_TARGETS and STANDALONE_SUBDIR_TARGETS can be appended to
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# via make.conf or src.conf.
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#
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.if !target(__<bsd.subdir.mk>__)
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__<bsd.subdir.mk>__:
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SUBDIR_TARGETS+= \
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all all-man analyze buildconfig buildfiles buildincludes \
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checkdpadd clean cleandepend cleandir cleanilinks \
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cleanobj depend distribute files includes installconfig \
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installfiles installincludes realinstall lint maninstall \
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manlint obj objlink tags \
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# Described above.
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STANDALONE_SUBDIR_TARGETS+= \
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all-man buildconfig buildfiles buildincludes check checkdpadd \
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clean cleandepend cleandir cleanilinks cleanobj files includes \
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installconfig installincludes installfiles maninstall manlint \
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obj objlink \
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# It is safe to install in parallel when staging.
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.if defined(NO_ROOT)
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STANDALONE_SUBDIR_TARGETS+= realinstall
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.endif
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.include <bsd.init.mk>
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.if !defined(NEED_SUBDIR)
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.if ${.MAKE.LEVEL} == 0 && ${MK_DIRDEPS_BUILD} == "yes" && !empty(SUBDIR) && !(make(clean*) || make(destroy*))
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.include <meta.subdir.mk>
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# ignore this
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_SUBDIR:
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.endif
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.endif
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DISTRIBUTION?= base
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.if !target(distribute)
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distribute: .MAKE
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.for dist in ${DISTRIBUTION}
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${_+_}cd ${.CURDIR}; \
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${MAKE} install installconfig -DNO_SUBDIR DESTDIR=${DISTDIR}/${dist} SHARED=copies
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.endfor
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.endif
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# Convenience targets to run 'build${target}' and 'install${target}' when
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# calling 'make ${target}'.
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.for __target in files includes
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.if !target(${__target})
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${__target}: build${__target} install${__target}
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.ORDER: build${__target} install${__target}
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.endif
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.endfor
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# Make 'install' supports a before and after target. Actual install
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# hooks are placed in 'realinstall'.
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.if !target(install)
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.for __stage in before real after
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.if !target(${__stage}install)
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${__stage}install:
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.endif
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.endfor
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install: beforeinstall realinstall afterinstall
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.ORDER: beforeinstall realinstall afterinstall
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.endif
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.ORDER: all install
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# SUBDIR recursing may be disabled for MK_DIRDEPS_BUILD
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.if !target(_SUBDIR)
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.if defined(SUBDIR)
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SUBDIR:=${SUBDIR} ${SUBDIR.yes}
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SUBDIR:=${SUBDIR:u}
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.endif
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# Subdir code shared among 'make <subdir>', 'make <target>' and SUBDIR_PARALLEL.
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_SUBDIR_SH= \
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if test -d ${.CURDIR}/$${dir}.${MACHINE_ARCH}; then \
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dir=$${dir}.${MACHINE_ARCH}; \
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fi; \
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${ECHODIR} "===> ${DIRPRFX}$${dir} ($${target})"; \
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cd ${.CURDIR}/$${dir}; \
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${MAKE} $${target} DIRPRFX=${DIRPRFX}$${dir}/
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# This is kept for compatibility only. The normal handling of attaching to
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# SUBDIR_TARGETS will create a target for each directory.
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_SUBDIR: .USEBEFORE
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.if defined(SUBDIR) && !empty(SUBDIR) && !defined(NO_SUBDIR)
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@${_+_}target=${.TARGET:realinstall=install}; \
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for dir in ${SUBDIR:N.WAIT}; do ( ${_SUBDIR_SH} ); done
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.endif
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# Create 'make subdir' targets to run the real 'all' target.
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.for __dir in ${SUBDIR:N.WAIT}
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${__dir}: all_subdir_${DIRPRFX}${__dir} .PHONY
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.endfor
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.for __target in ${SUBDIR_TARGETS}
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# Can ordering be skipped for this and SUBDIR_PARALLEL forced?
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.if ${STANDALONE_SUBDIR_TARGETS:M${__target}}
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_is_standalone_target= 1
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SUBDIR:= ${SUBDIR:N.WAIT}
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.else
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_is_standalone_target= 0
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.endif
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__subdir_targets=
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.for __dir in ${SUBDIR}
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.if ${__dir} == .WAIT
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__subdir_targets+= .WAIT
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.else
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__deps=
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.if ${_is_standalone_target} == 0
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.if defined(SUBDIR_PARALLEL)
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# Apply SUBDIR_DEPEND dependencies for SUBDIR_PARALLEL.
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.for __dep in ${SUBDIR_DEPEND_${__dir}}
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__deps+= ${__target}_subdir_${DIRPRFX}${__dep}
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.endfor
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.else
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# For non-parallel builds, directories depend on all targets before them.
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__deps:= ${__subdir_targets}
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.endif # defined(SUBDIR_PARALLEL)
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.endif # ${_is_standalone_target} == 0
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${__target}_subdir_${DIRPRFX}${__dir}: .PHONY .MAKE .SILENT ${__deps}
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@${_+_}target=${__target:realinstall=install}; \
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dir=${__dir}; \
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${_SUBDIR_SH};
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__subdir_targets+= ${__target}_subdir_${DIRPRFX}${__dir}
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.endif # ${__dir} == .WAIT
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.endfor # __dir in ${SUBDIR}
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# Attach the subdir targets to the real target.
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# Only recurse on directly-called targets. I.e., don't recurse on dependencies
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# such as 'install' becoming {before,real,after}install, just recurse
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# 'install'. Despite that, 'realinstall' is special due to ordering issues
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# with 'afterinstall'.
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.if !defined(NO_SUBDIR) && (make(${__target}) || \
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(${__target} == realinstall && make(install)))
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${__target}: ${__subdir_targets} .PHONY
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.endif # make(${__target})
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.endfor # __target in ${SUBDIR_TARGETS}
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.endif # !target(_SUBDIR)
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# Ensure all targets exist
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.for __target in ${SUBDIR_TARGETS}
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.if !target(${__target})
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${__target}:
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.endif
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.endfor
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.endif
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