| commit | fab2eb7b8aa6fe35035628d409ef1e75b8a489b4 | [log] [tgz] |
|---|---|---|
| author | Scott Graham <scottmg@chromium.org> | Thu Jun 28 09:14:53 2018 -0700 |
| committer | Commit Bot <commit-bot@chromium.org> | Thu Jun 28 16:53:51 2018 +0000 |
| tree | 74d1eb01ede0c3abcbd1b3d22bb4f187a9c5da52 | |
| parent | 04983e551e8bafaecc25bb9b5080d5eff9c55215 [diff] |
Build linux binaries against sid sysroot Additionally, this requires building against libstdc++ because there's no libc++ in the sysroot and we aren't currently set up to build libc++ locally. Because this has broken ChromeOS, use libstdc++ for now and resolve libc++ build later, if necessary. Unfortunately this doesn't seem to have changed the readelf -d output, but hopefully it will help CrOS? I'm not sure. Before: [(0c5d936b...)] scottmg@around:/work/gn$ readelf -d out/gn Dynamic section at offset 0x222270 contains 31 entries: Tag Type Name/Value 0x0000000000000001 (NEEDED) Shared library: [libc.so.6] 0x0000000000000001 (NEEDED) Shared library: [ld-linux-x86-64.so.2] 0x0000000000000001 (NEEDED) Shared library: [libgcc_s.so.1] 0x0000000000000001 (NEEDED) Shared library: [libm.so.6] 0x0000000000000001 (NEEDED) Shared library: [libpthread.so.0] 0x0000000000000001 (NEEDED) Shared library: [librt.so.1] 0x0000000000000001 (NEEDED) Shared library: [libatomic.so.1] After: [linux-sysroot] scottmg@around:/work/gn$ readelf -d out/gn Dynamic section at offset 0x25cc68 contains 31 entries: Tag Type Name/Value 0x0000000000000001 (NEEDED) Shared library: [libc.so.6] 0x0000000000000001 (NEEDED) Shared library: [ld-linux-x86-64.so.2] 0x0000000000000001 (NEEDED) Shared library: [libgcc_s.so.1] 0x0000000000000001 (NEEDED) Shared library: [libm.so.6] 0x0000000000000001 (NEEDED) Shared library: [libpthread.so.0] 0x0000000000000001 (NEEDED) Shared library: [librt.so.1] 0x0000000000000001 (NEEDED) Shared library: [libatomic.so.1] ... Bug: chromium:855791 Change-Id: I1fd8574cdfa5fd856e0fb27d734d15135a00b99a Reviewed-on: https://gn-review.googlesource.com/1900 Reviewed-by: Dirk Pranke <dpranke@chromium.org> Commit-Queue: Scott Graham <scottmg@chromium.org>
GN is a meta-build system that generates build files for Ninja.
git clone https://gn.googlesource.com/gn cd gn python build/gen.py ninja -C out
On Windows, it is expected that cl.exe, link.exe, and lib.exe can be found in PATH, so you'll want to run from a Visual Studio command prompt, or similar.
On Linux and Mac, the default compiler is clang++, a recent version is expected to be found in PATH. This can be overridden by setting CC, CXX, and AR.
GN uses Gerrit for code review. The short version of how to patch is:
... edit code ... ninja -C out && out/gn_unittests
Then, to upload a change for review:
git commit git push origin HEAD:refs/for/master # This uploads for review.
When revising a change, use:
git commit --amend git push origin HEAD:refs/for/master
which will add the new changes to the existing code review, rather than creating a new one.
TODO: AUTHORS, CLA, etc.