Nathan Froyd 2c5288d26c Bug 1163171 - part 3a - expose the NDK clang binaries to toolchain configury; r=glandium
Our normal method of locating the compilers in the NDK is to set
--with-toolchain-prefix when compiling for Android.  However, the clang
binaries are in a different location than would otherwise be implied by
--with-toolchain-prefix.  Additionally, we still need to know about
--with-toolchain-prefix because the NDK clang needs to be pointed there
so clang can find important binaries like the linker and because various
other bits of the build system depend on the --with-toolchain-prefix
value as well.

So we need a separate mechanism for communicating the whereabouts of the
NDK clang.  We can't set CC and CXX because doing so would conflict with
the CC and CXX values exported to the js/src/ subconfigure.  But Android
already has an extra_toolchain_flags function that we use for informing
moz.configure about additional flags needed solely for Android, and we
can use a similar trick to communicate the existence of the NDK's clang
to the main C/C++ compiler selection process.
2017-10-28 17:38:59 -04:00

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