freebsd-skq/share/mk/bsd.subdir.mk
ian c9e2f27302 Create a mechanism for providing fine-grained build order dependencies
during SUBDIR_PARALLEL builds.  This augments the coarse .WAIT mechanism,
which is still useful if you've got a situation such as "almost everything
depends on A and B".

Because the parallel subdir mechanism uses non-obvious mangling of
target names, which should probably remain a private detail of the
implementation, it's not easy to do things like "libfoo: libbar", so
instead the new mechanism lets you set a variable that lists dependencies:

  SUBDIR_DEPEND_libfoo= libgroodah libpouet

Note that while I'm using libraries as an example here, it really has
nothing to do with the generated library files.  This is really saying
"build in directory libfoo after building in the libgroodah and libpouet
directories."

This updates lib/Makefile with dependency information based on the old
almost-accurate comment block and by combing through lib/* makefiles
looking for LDADD dependencies to other libraries within lib/*.

Reviewed by:	Jia-Shiun Li <jiashiun@gmail.com>
2014-06-15 13:45:37 +00:00

137 lines
3.8 KiB
Makefile

# from: @(#)bsd.subdir.mk 5.9 (Berkeley) 2/1/91
# $FreeBSD$
#
# The include file <bsd.subdir.mk> contains the default targets
# for building subdirectories.
#
# For all of the directories listed in the variable SUBDIRS, the
# specified directory will be visited and the target made. There is
# also a default target which allows the command "make subdir" where
# subdir is any directory listed in the variable SUBDIRS.
#
#
# +++ variables +++
#
# DISTRIBUTION Name of distribution. [base]
#
# SUBDIR A list of subdirectories that should be built as well.
# Each of the targets will execute the same target in the
# subdirectories.
#
# +++ targets +++
#
# distribute:
# This is a variant of install, which will
# put the stuff into the right "distribution".
#
# afterinstall, all, all-man, beforeinstall, checkdpadd, clean,
# cleandepend, cleandir, cleanilinks depend, install, lint,
# maninstall, manlint, obj, objlink, realinstall, regress, tags
#
.if !target(__<bsd.subdir.mk>__)
__<bsd.subdir.mk>__:
.include <bsd.init.mk>
DISTRIBUTION?= base
.if !target(distribute)
distribute: .MAKE
.for dist in ${DISTRIBUTION}
${_+_}cd ${.CURDIR}; \
${MAKE} install -DNO_SUBDIR DESTDIR=${DISTDIR}/${dist} SHARED=copies
.endfor
.endif
_SUBDIR: .USE .MAKE
.if defined(SUBDIR) && !empty(SUBDIR) && !defined(NO_SUBDIR)
@${_+_}set -e; for entry in ${SUBDIR:N.WAIT}; do \
if test -d ${.CURDIR}/$${entry}.${MACHINE_ARCH}; then \
${ECHODIR} "===> ${DIRPRFX}$${entry}.${MACHINE_ARCH} (${.TARGET:S,realinstall,install,:S,^_sub.,,})"; \
edir=$${entry}.${MACHINE_ARCH}; \
cd ${.CURDIR}/$${edir}; \
else \
${ECHODIR} "===> ${DIRPRFX}$$entry (${.TARGET:S,realinstall,install,:S,^_sub.,,})"; \
edir=$${entry}; \
cd ${.CURDIR}/$${edir}; \
fi; \
${MAKE} ${.TARGET:S,realinstall,install,:S,^_sub.,,} \
DIRPRFX=${DIRPRFX}$$edir/; \
done
.endif
${SUBDIR:N.WAIT}: .PHONY .MAKE
${_+_}@if test -d ${.TARGET}.${MACHINE_ARCH}; then \
cd ${.CURDIR}/${.TARGET}.${MACHINE_ARCH}; \
else \
cd ${.CURDIR}/${.TARGET}; \
fi; \
${MAKE} all
# Work around parsing of .if nested in .for by putting .WAIT string into a var.
__wait= .WAIT
.for __target in all all-man checkdpadd clean cleandepend cleandir \
cleanilinks depend distribute lint maninstall manlint obj objlink \
realinstall regress tags ${SUBDIR_TARGETS}
.ifdef SUBDIR_PARALLEL
__subdir_targets=
.for __dir in ${SUBDIR}
.if ${__wait} == ${__dir}
__subdir_targets+= .WAIT
.else
__subdir_targets+= ${__target}_subdir_${__dir}
__deps=
.for __dep in ${SUBDIR_DEPEND_${__dir}}
__deps+= ${__target}_subdir_${__dep}
.endfor
${__target}_subdir_${__dir}: .MAKE ${__deps}
.if !defined(NO_SUBDIR)
@${_+_}set -e; \
if test -d ${.CURDIR}/${__dir}.${MACHINE_ARCH}; then \
${ECHODIR} "===> ${DIRPRFX}${__dir}.${MACHINE_ARCH} (${__target:realinstall=install})"; \
edir=${__dir}.${MACHINE_ARCH}; \
cd ${.CURDIR}/$${edir}; \
else \
${ECHODIR} "===> ${DIRPRFX}${__dir} (${__target:realinstall=install})"; \
edir=${__dir}; \
cd ${.CURDIR}/$${edir}; \
fi; \
${MAKE} ${__target:realinstall=install} \
DIRPRFX=${DIRPRFX}$$edir/
.endif
.endif
.endfor
${__target}: ${__subdir_targets}
.else
${__target}: _sub.${__target}
_sub.${__target}: _SUBDIR
.endif
.endfor
.for __target in files includes
.for __stage in build install
${__stage}${__target}:
.if make(${__stage}${__target})
${__stage}${__target}: _sub.${__stage}${__target}
_sub.${__stage}${__target}: _SUBDIR
.endif
.endfor
.if !target(${__target})
${__target}: .MAKE
${_+_}set -e; cd ${.CURDIR}; ${MAKE} build${__target}; ${MAKE} install${__target}
.endif
.endfor
.if !target(install)
.if !target(beforeinstall)
beforeinstall:
.endif
.if !target(afterinstall)
afterinstall:
.endif
install: beforeinstall realinstall afterinstall
.ORDER: beforeinstall realinstall afterinstall
.endif
.endif