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toolchain: Print CC command and output when CC invocation fails

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We are gobbling up the `$(CC_$(arch))` stderr when testing the
toolchain. This change makes it so we print the command we tried to
invoke and the output from the command.

```
toolchain.mk:183: The coreboot toolchain for 'x86_32' architecture was not found.
toolchain.mk:183: /build/guybrush/tmp/portage/sys-boot/coreboot-9999/files/reclient/ccache /build/guybrush/tmp/portage/sys-boot/coreboot-9999/work/coreboot-sdk/bin/i386-elf-gcc -v
I AM STDERR
toolchain.mk:183: I AM STDOUT
toolchain.mk:219:
toolchain.mk:220: Path to your toolchain is currently set to '/build/guybrush/tmp/portage/sys-boot/coreboot-9999/work/coreboot-sdk/bin'
toolchain.mk:222:
toolchain.mk:223: To build the entire coreboot toolchain: run 'make crossgcc'

```

BUG=b:392874252, b:389737339
TEST=USE_REMOTEEXEC=true BOARD=brya bazel run @portage//internal/packages/stage2/target/board/chromiumos/sys-boot/coreboot:9999_debug

Change-Id: I7c7352c7254c21deb3e4a03106b841ec9f111ba4
Signed-off-by: Raul E Rangel <rrangel@chromium.org>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/86220
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Jon Murphy <jpmurphy@google.com>
This commit is contained in:
Raul E Rangel 2025-01-29 16:14:12 -07:00 • committed by Matt DeVillier
commit 9e4b75cf34
1 changed files with 4 additions and 1 deletions
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5
toolchain.mk
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@ -187,7 +187,10 @@ $(foreach arch,$(sort $(foreach stage,\
echo not-coreboot; else echo not-coreboot; fi), \
$(eval COMPILERFAIL:=1)\
$(warning The coreboot toolchain for '$(arch)'\
architecture was not found.)))
architecture was not found.)\
$(if $(CC_$(arch)),\
$(warning $(CC_$(arch)) -v)\
$(warning $(shell $(CC_$(arch)) -v)))))
# If iasl doesn't match the current coreboot version, fail the test
# TODO: Figure out if iasl is even needed for the build.
$(if $(shell if [ -n "$(IASL)" ]; then \