sys-devel/gdb: fix GCC/Clang build mixture #23796
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GDB configure will use a mix of GCC and Clang due to
$GCC_FOR_TARGET defaulting to GCC in Clang-configured
builds, so set the var to ensure the proper compilers
are detected and to avoid mixing them.
Before setting the variable (example from ChromiumOS):
checking for x86_64-cros-linux-gnu-gcc... x86_64-cros-linux-gnu-gcc
After:
checking for gcc... (cached) x86_64-cros-linux-gnu-clang
Bug: https://bugs.gentoo.org/831202
Signed-off-by: Adrian Ratiu adrian.ratiu@collabora.com