tree 74d1eb01ede0c3abcbd1b3d22bb4f187a9c5da52
parent 04983e551e8bafaecc25bb9b5080d5eff9c55215
author Scott Graham <scottmg@chromium.org> 1530202493 -0700
committer Commit Bot <commit-bot@chromium.org> 1530204831 +0000

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>