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#!/bin/bash
# This script is intented to wrap the execution of ninja so that we
# can do some checks before each ninja run.
#
# It can either be run with a standalone Blueprint checkout to generate
# the minibp binary, or can be used by another script as part of a custom
# Blueprint-based build system. When used by another script, the following
# environment variables can be set to configure this script, which are
# documented below:
#
# BUILDDIR
# SKIP_NINJA
#
# When run in a standalone Blueprint checkout, bootstrap.bash will install
# this script into the $BUILDDIR, where it may be executed.
#
# For embedding into a custom build system, the current directory when this
# script executes should be the same directory that $BOOTSTRAP should be
# called from.
set -e
# BUILDDIR should be set to the path to store build results. By default,
# this is the directory containing this script, but can be set explicitly
# if the custom build system only wants to install their own wrapper.
[ -z "$BUILDDIR" ] && BUILDDIR=`dirname "${BASH_SOURCE[0]}"`
# NINJA should be set to the path of the ninja executable. By default, this
# is just "ninja", and will be looked up in $PATH.
[ -z "$NINJA" ] && NINJA=ninja
if [ ! -f "${BUILDDIR}/.blueprint.bootstrap" ]; then
echo "Please run bootstrap.bash (.blueprint.bootstrap missing)" >&2
exit 1
fi
# .blueprint.bootstrap provides saved values from the bootstrap.bash script:
#
# BOOTSTRAP
# BOOTSTRAP_MANIFEST
#
source "${BUILDDIR}/.blueprint.bootstrap"
GEN_BOOTSTRAP_MANIFEST="${BUILDDIR}/.minibootstrap/build.ninja.in"
if [ -f "${GEN_BOOTSTRAP_MANIFEST}" ]; then
if [ "${BOOTSTRAP_MANIFEST}" -nt "${GEN_BOOTSTRAP_MANIFEST}" ]; then
"${BOOTSTRAP}" -i "${BOOTSTRAP_MANIFEST}"
fi
else
"${BOOTSTRAP}" -i "${BOOTSTRAP_MANIFEST}"
fi
# Build minibp and the primary build.ninja
"${NINJA}" -w dupbuild=err -f "${BUILDDIR}/.minibootstrap/build.ninja" "${BUILDDIR}/.bootstrap/build.ninja"
# Build the primary builder and the main build.ninja
"${NINJA}" -w dupbuild=err -f "${BUILDDIR}/.bootstrap/build.ninja" "${BUILDDIR}/build.ninja"
# SKIP_NINJA can be used by wrappers that wish to run ninja themselves.
if [ -z "$SKIP_NINJA" ]; then
"${NINJA}" -w dupbuild=err -f "${BUILDDIR}/build.ninja" "$@"
else
exit 0
fi
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