tree fcd4db6f10963ef6577b31edf66d82b4b22d9ebc
parent 1a6c26d1f52999edbfbf6a978ae3f0e6759ea755
author Arthur Eubanks <aeubanks@google.com> 1636577511 -0800
committer Arthur Eubanks <aeubanks@google.com> 1636684878 -0800

[gn build] Fix Android compiler-rt targets

If a sysroot was specified, it would take precedence over the Android
NDK sysroot since it would appear after in the command line.

Also only build runtimes for enabled target arches. Many places have
copied this around so create and use supported_android_toolchains.

Reviewed By: pcc

Differential Revision: https://reviews.llvm.org/D113606