Dan Willemsen | d79f1af | 2015-12-09 18:03:13 -0800 | [diff] [blame^] | 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 |