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Add some more explanation to the different phases of the build.

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This commit is contained in:
Warner Losh 2015-03-25 21:59:36 +00:00
parent 28cdb3ee15
commit 996d8a0d17
1 changed files with 14 additions and 5 deletions
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19
Makefile.inc1
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@ -209,7 +209,9 @@ INSTALLTMP!= /usr/bin/mktemp -d -u -t install
# 1. legacy stage [BMAKE]
# This stage is responsible for creating compatibility
# shims that are needed by the bootstrap-tools,
# build-tools and cross-tools stages.
# build-tools and cross-tools stages. These are generally
# APIs that tools from one of those three stages need to
# build that aren't present on the host.
# 1. bootstrap-tools stage [BMAKE]
# This stage is responsible for creating programs that
# are needed for backward compatibility reasons. They
@ -220,7 +222,7 @@ INSTALLTMP!= /usr/bin/mktemp -d -u -t install
# the build process.
# 3. cross-tools stage [XMAKE]
# This stage is responsible for creating any tools that
# are needed for cross-builds. A cross-compiler is one
# are needed for building the system. A cross-compiler is one
# of them.
# 4. world stage [WMAKE]
# This stage actually builds the world.
@ -1222,7 +1224,9 @@ update:
#
#
# legacy: Build compatibility shims for the next three targets
# legacy: Build compatibility shims for the next three targets. This is a minimal
# set of tools and shims necessary to compensate for older systems which don't have
# the APIs that the targets built in bootstrap-tools, build-tools or cross-tools.
#
legacy:
.if ${BOOTSTRAPPING} < 800107 && ${BOOTSTRAPPING} != 0
@ -1240,7 +1244,10 @@ legacy:
.endfor
#
# bootstrap-tools: Build tools needed for compatibility
# bootstrap-tools: Build tools needed for compatibility. These are binaries that
# are built to build other binaries in the system. However, the focus of these
# binaries is usually quite narrow. Bootstrap tools use the host's compiler and
# libraries, augmented by -legacy.
#
_bt= _bootstrap-tools
@ -1446,7 +1453,9 @@ kernel-tools: .MAKE
-p ${MAKEOBJDIRPREFIX}/usr >/dev/null
#
# cross-tools: Build cross-building tools
# cross-tools: All the tools needed to build the rest of the system after
# we get done with the earlier stages. It is the last set of tools needed
# to begin building the target binaries.
#
.if ${TARGET_ARCH} != ${MACHINE_ARCH}
.if ${TARGET_ARCH} == "amd64" || ${TARGET_ARCH} == "i386"