Chris Bracken a03068b535 [iOS] Eliminate --clang-dir flag (flutter/engine#54008)
This is only ever used for gen_snapshot_arm64 where the value will only
ever be 'clang_x64'. If we were to migrate builds to arm64 hosts, the
gen_snapshot_x64 target would be broken as the script stands today.

This flag is never passed by recipe infra or outside callers, and can
thus be safely inlined. The same refactoring was performed for
generating universal gen_snapshots in #53954.

A followup patch will update the location where this gen_snapshot binary
is generated (and adds an arm64 host binary build), and the merged
universal gen_snapshot_${target_cpu} will be written to the root output
directory.

This is minor pre-factoring to simplify the followup patch, which
migrates to universal binaries for iOS.

Issue: https://github.com/flutter/flutter/issues/101138
Issue: https://github.com/flutter/flutter/issues/69157
2024-07-19 17:31:38 -07:00
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