1 #!/bin/bash 2 3 # This script is intented to wrap the execution of ninja so that we 4 # can do some checks before each ninja run. 5 # 6 # It can either be run with a standalone Blueprint checkout to generate 7 # the minibp binary, or can be used by another script as part of a custom 8 # Blueprint-based build system. When used by another script, the following 9 # environment variables can be set to configure this script, which are 10 # documented below: 11 # 12 # BUILDDIR 13 # SKIP_NINJA 14 # 15 # When run in a standalone Blueprint checkout, bootstrap.bash will install 16 # this script into the $BUILDDIR, where it may be executed. 17 # 18 # For embedding into a custom build system, the current directory when this 19 # script executes should be the same directory that $BOOTSTRAP should be 20 # called from. 21 22 set -e 23 24 # BUILDDIR should be set to the path to store build results. By default, 25 # this is the directory containing this script, but can be set explicitly 26 # if the custom build system only wants to install their own wrapper. 27 [ -z "$BUILDDIR" ] && BUILDDIR=`dirname "${BASH_SOURCE[0]}"` 28 29 # .blueprint.bootstrap provides saved values from the bootstrap.bash script: 30 # 31 # BOOTSTRAP 32 # BOOTSTRAP_MANIFEST 33 # 34 # If it doesn't exist, we probably just need to re-run bootstrap.bash, which 35 # ninja will do when switching stages. So just skip to ninja. 36 if [ -f "${BUILDDIR}/.blueprint.bootstrap" ]; then 37 source "${BUILDDIR}/.blueprint.bootstrap" 38 39 # Pick the newer of .bootstrap/bootstrap.ninja.in or $BOOTSTRAP_MANIFEST, 40 # and copy it to .bootstrap/build.ninja.in 41 GEN_BOOTSTRAP_MANIFEST="${BUILDDIR}/.bootstrap/bootstrap.ninja.in" 42 if [ -f "${GEN_BOOTSTRAP_MANIFEST}" ]; then 43 if [ "${GEN_BOOTSTRAP_MANIFEST}" -nt "${BOOTSTRAP_MANIFEST}" ]; then 44 BOOTSTRAP_MANIFEST="${GEN_BOOTSTRAP_MANIFEST}" 45 fi 46 fi 47 48 # Copy the selected manifest to $BUILDDIR/.bootstrap/build.ninja.in 49 mkdir -p "${BUILDDIR}/.bootstrap" 50 cp "${BOOTSTRAP_MANIFEST}" "${BUILDDIR}/.bootstrap/build.ninja.in" 51 52 # Bootstrap it to $BUILDDIR/build.ninja 53 "${BOOTSTRAP}" -i "${BUILDDIR}/.bootstrap/build.ninja.in" 54 fi 55 56 # SKIP_NINJA can be used by wrappers that wish to run ninja themselves. 57 if [ -z "$SKIP_NINJA" ]; then 58 ninja -C "${BUILDDIR}" "$@" 59 else 60 exit 0 61 fi 62
