Re: [Qemu-devel] check-tcg failure

["Alex Bennée" <alex.bennee@linaro.org>]

Richard Henderson <richard.henderson@linaro.org> writes:

> On aa64, "cross-compiling" to aa32, with
>
> CC=arm-linux-gnueabihf-gcc

So this is different from ./configure --cross-cc=arch-linux-gnueabihf-

>
> configure determines
>
> aarch64-linux-user/config-target.mak:CROSS_CC_GUEST="aarch64-linux-gnu-gcc"
> aarch64-linux-user/config-target.mak:CROSS_CC_GUEST_STATIC=y
> aarch64-softmmu/config-target.mak:CROSS_CC_GUEST="aarch64-linux-gnu-gcc"
> aarch64-softmmu/config-target.mak:CROSS_CC_GUEST_STATIC=y
> arm-linux-user/config-target.mak:CROSS_CC_GUEST="cc"
> arm-linux-user/config-target.mak:CROSS_CC_GUEST_STATIC=y
> arm-softmmu/config-target.mak:CROSS_CC_GUEST="cc"
> arm-softmmu/config-target.mak:CROSS_CC_GUEST_STATIC=y
>
> which results in
>
>   BUILD   arm guest-tests with cc
> cc: error: unrecognized command line option ‘-marm’; did you mean ‘-fasm’?
>
> Because of course cc is the aa64 host compiler.

Hmm the build target is determined by check_define which uses $cc so I'm
guessing all those setting cross_FOO to host_cc should be using cc
instead?

In fact looking deeper I'm not sure what HOST_CC is meant to be used
for. We export it to make but the only place I can find it in the source
tree is:

$(feat-dst)gen-features: $(feat-src)gen-features.c
	$(call quiet-command,$(HOST_CC) $(QEMU_INCLUDES) -o $@ $<,"CC","$(TARGET_DIR)gen-features")

As part of s390x - weird.

>
>
> r~


--
Alex Bennée