Since the approach in https://webrtc-codereview.appspot.com/48869004/
was not possible, this is the only way to set
the target_subarch GYP_DEFINES for iOS.
WebRTC doesn't use or support the target_subarch
GYP variable in the same way as Chromium does, and we
currently don't build fat binaries at our buildbots.
This is needed to unblock the chromium_revision roll in
https://webrtc-codereview.appspot.com/50569004/ and it
also makes it a bit easier to build for iOS since it
is no longer needed to set target_subarch=arm64 when
target_arch=arm64 (i.e. when you build for ARM64).
BUG=4503
TESTED=Ran successful project generations using:
GYP_DEFINES="OS=ios target_arch=arm" webrtc/build/gyp_webrtc
and verified the -arch compiler flag was set to 'armv7'
GYP_DEFINES="OS=ios target_arch=arm64" webrtc/build/gyp_webrtc
and verified the -arch compiler flag was set to 'arm64'
R=phoglund@webrtc.org
Review URL: https://webrtc-codereview.appspot.com/48909004
Cr-Commit-Position: refs/heads/master@{#8949}
06c80133f2