8f62bca488
Inheriting $PATH during the build phase can cause the build to fail when
compiling on a different system due to missing build tools or incompatible
versions somewhere in $PATH. This has cause build failures for us before
due to the jenkins slaves still running FreeBSD 10.
Listing the tools we depend on explicitly instead of just using whatever
happens to be in $PATH allows us to check that we don't accidentally add a
new build dependency.
All tools that do no need to be bootstrapped will now be symlinked to
${WORLDTMP}/legacy/bin and during the build phase $PATH will only contain
${WORLDTMP}. There is also a new variable "BOOTSTRAP_ALL_TOOLS" which can
be set to force compiling almost all bootstrap tools instead of symlinking
them. This will not bootstrap tools such as cp,mv, etc. since they may be
used during the build and for those we should really only be using POSIX
compatible options.
Furthermore, this change is required in order to be able to build on
non-FreeBSD hosts. While the same binaries may exist on Linux/MacOS they
often accept different flags or produce incompatible output.
Approved By: brooks (mentor)
Differential Revision: https://reviews.freebsd.org/D16815
125 lines
4.1 KiB
Makefile
125 lines
4.1 KiB
Makefile
# $FreeBSD$
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.PATH: ${.CURDIR}/../../include
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LIB= egacy
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SRC=
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INCSGROUPS= INCS SYSINCS
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INCS=
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SYSINCSDIR= ${INCLUDEDIR}/sys
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BOOTSTRAPPING?= 0
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_WITH_PWCACHEDB!= grep -c pwcache_groupdb /usr/include/grp.h || true
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.if ${_WITH_PWCACHEDB} == 0
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.PATH: ${.CURDIR}/../../contrib/libc-pwcache
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CFLAGS+= -I${.CURDIR}/../../contrib/libc-pwcache \
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-I${.CURDIR}/../../lib/libc/include
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SRCS+= pwcache.c
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.endif
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_WITH_STRSVIS!= grep -c strsvis /usr/include/vis.h || true
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.if ${_WITH_STRSVIS} == 0
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.PATH: ${.CURDIR}/../../contrib/libc-vis
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SRCS+= vis.c
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CFLAGS+= -I${.CURDIR}/../../contrib/libc-vis \
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-I${.CURDIR}/../../lib/libc/include
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.endif
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_WITH_REALLOCARRAY!= grep -c reallocarray /usr/include/stdlib.h || true
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.if ${_WITH_REALLOCARRAY} == 0
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.PATH: ${.CURDIR}/../../lib/libc/stdlib
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INCS+= stdlib.h
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SRCS+= reallocarray.c
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CFLAGS+= -I${.CURDIR}/../../lib/libc/include
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.endif
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_WITH_UTIMENS!= grep -c utimensat /usr/include/sys/stat.h || true
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.if ${_WITH_UTIMENS} == 0
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SYSINCS+= stat.h
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SRCS+= futimens.c utimensat.c
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.endif
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_WITH_EXPLICIT_BZERO!= grep -c explicit_bzero /usr/include/strings.h || true
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.if ${_WITH_EXPLICIT_BZERO} == 0
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.PATH: ${SRCTOP}/sys/libkern
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INCS+= strings.h
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SRCS+= explicit_bzero.c
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.endif
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.if empty(SRCS)
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SRCS= dummy.c
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.endif
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.if defined(CROSS_BUILD_TESTING)
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SUBDIR= cross-build
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.endif
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# Needed to build config (since it uses libnv)
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SYSINCS+= ${SRCTOP}/sys/sys/nv.h ${SRCTOP}/sys/sys/cnv.h
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# We want to run the build with only ${WORLDTMP} in $PATH to ensure we don't
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# accidentally run tools that are incompatible but happen to be in $PATH.
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# This is especially important when building on Linux/MacOS where many of the
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# programs used during the build accept different flags or generate different
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# output. On those platforms we only symlink the tools known to be compatible
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# (e.g. basic utilities such as mkdir) into ${WORLDTMP} and build all others
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# from the FreeBSD sources during the bootstrap-tools stage.
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# basic commands: It is fine to use the host version for all of these even on
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# Linux/MacOS since we only use flags that are supported by all of them.
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_host_tools_to_symlink= basename bzip2 bunzip2 chmod chown cmp comm cp date \
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dirname echo env false find fmt gzip gunzip head hostname id ln ls \
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mkdir mv nice patch rm realpath sh sleep stat tee touch tr true uname \
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uniq wc which
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# We also need a symlink to the absolute path to the make binary used for
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# the toplevel makefile. This is not necessarily the same as `which make`
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# since e.g. on Linux and MacOS that will be GNU make.
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_make_abs!= which "${MAKE}"
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_host_abs_tools_to_symlink= ${_make_abs}:make ${_make_abs}:bmake
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host-symlinks:
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@echo "Linking host tools into ${DESTDIR}/bin"
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.for _tool in ${_host_tools_to_symlink}
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@if [ ! -e "${DESTDIR}/bin/${_tool}" ]; then \
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source_path=`which ${_tool}`; \
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if [ ! -e "$${source_path}" ] ; then \
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echo "Cannot find host tool '${_tool}'"; false; \
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fi; \
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ln -sfnv "$${source_path}" "${DESTDIR}/bin/${_tool}"; \
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fi
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.endfor
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.for _tool in ${_host_abs_tools_to_symlink}
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@source_path="${_tool:S/:/ /:[1]}"; \
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target_path="${DESTDIR}/bin/${_tool:S/:/ /:[2]}"; \
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if [ ! -e "$${target_path}" ] ; then \
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if [ ! -e "$${source_path}" ] ; then \
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echo "Host tool '${src_path}' is missing"; false; \
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fi; \
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ln -sfnv "$${source_path}" "$${target_path}"; \
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fi
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.endfor
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# Create all the directories that are needed during the legacy, bootstrap-tools
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# and cross-tools stages. We do this here using mkdir since mtree may not exist
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# yet (this happens if we are crossbuilding from Linux/Mac).
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installdirs:
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.for _dir in bin usr/lib usr/include lib/geom lib/casper
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mkdir -p "${DESTDIR}/${_dir}"
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.endfor
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# Link usr/bin, sbin, and usr/sbin to bin so that it doesn't matter whether a
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# bootstrap tool was added to WORLTMP with a symlink or by building it in the
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# bootstrap-tools phase. We could also overrride BINDIR when building bootstrap
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# tools but adding the symlinks is easier and means all tools are also
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# in the directory that they are installed to normally.
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ln -sf bin ${DESTDIR}/sbin
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ln -sf ../bin ${DESTDIR}/usr/bin
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ln -sf ../bin ${DESTDIR}/usr/sbin
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.for _group in ${INCSGROUPS:NINCS}
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mkdir -p "${DESTDIR}/${${_group}DIR}"
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.endfor
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.include <bsd.lib.mk>
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