GN: fix cross-compilation support
Refactor and clean up the cc/target_cc logic.
The intended semantic is:
ar/cc/cxx:
In non-cross builds define the compiler for everything
In cross builds define the host compiler.
target_ar/target_cc/target_cxx:
In non-cross builds: are ignored
In cross builds define the target compiler.A
Also adds supports for GCC cross toolchains.
Bug: 141319350
Change-Id: Ia2aed634b7aa19518c8762039f1f4d67cc5758c0
diff --git a/BUILD.gn b/BUILD.gn
index 0ba5807..831a546 100644
--- a/BUILD.gn
+++ b/BUILD.gn
@@ -107,8 +107,8 @@
"protos/perfetto/trace:merged_trace", # For syntax-checking the proto.
# The diff testing framework depends on these descriptors.
- "protos/perfetto/metrics:descriptor",
- "protos/perfetto/trace:descriptor",
+ "protos/perfetto/metrics:descriptor($host_toolchain)",
+ "protos/perfetto/trace:descriptor($host_toolchain)",
# Used in the when updating the ftrace protos
"protos/perfetto/trace/ftrace:descriptor",