[Buildroot] [PATCH 1/1] external-toolchain: fix support

[Peter Korsgaard <jacmet@uclibc.org>]

>>>>> "Thomas" == Thomas Petazzoni <thomas.petazzoni@free-electrons.com> writes:

 Thomas> The recent commit adding the external toolchain wrapper has broken the
 Thomas> support for external toolchain. The check_arm_eabi, check_cplusplus
 Thomas> and check_cross_compiler_exists functions were using TARGET_CC, which
 Thomas> points to the toolchain wrapper, but at the moment those functions are
 Thomas> called, the wrapper hasn't been generated yet.

 Thomas> We fix this by passing to these functions the path to the C or C++
 Thomas> compiler they should use for their tests.

Thanks, committed. I don't quite know how I could have forgotten about
them in the commit. I do remember looking them over when I fixed the
ones in ext-tool.mk.

The commit would have been a bit smaller if we simply replaced TARGET_CC
with TOOLCHAIN_EXTERNAL_CC (and same for C++) as we only use these
macros from ex-tool.mk anyway, but ok.

-- 
Bye, Peter Korsgaard