Change in coreboot[master]: coreboot-sdk: Build Clang first in a separate step

[Nico Huber (Code Review)]

Nico Huber has uploaded this change for review. ( https://review.coreboot.org/29455

Change subject: coreboot-sdk: Build Clang first in a separate step
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coreboot-sdk: Build Clang first in a separate step

If we build one of the `all*` targets, build Clang first. Compiling
Clang (just for the host arch, I assume) takes more than half of the
time of the default build. When run as a separate step, we can make
use of Docker's cache if any step after Clang fails.

Change-Id: If67b458cde656f1dc6774215f6a575a48d12b797
Signed-off-by: Nico Huber 
---
M util/docker/coreboot-sdk/Dockerfile
1 file changed, 12 insertions(+), 5 deletions(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/55/29455/1

diff --git a/util/docker/coreboot-sdk/Dockerfile b/util/docker/coreboot-sdk/Dockerfile
index bdfbf4a..739e0d1 100644
--- a/util/docker/coreboot-sdk/Dockerfile
+++ b/util/docker/coreboot-sdk/Dockerfile
@@ -74,12 +74,19 @@
 RUN \
    cd /root && \
    git clone https://review.coreboot.org/coreboot && \
-	cd coreboot/util/crossgcc && \
-	git checkout {{DOCKER_COMMIT}} && \
-	make {{CROSSGCC_PARAM}} \
+	cd coreboot && \
+	git checkout {{DOCKER_COMMIT}}
+
+RUN \
+	if echo {{CROSSGCC_PARAM}} | grep -q ^all; then \
+		make -C/root/coreboot/util/crossgcc/ build_clang \
+			BUILD_LANGUAGES=c,ada CPUS=$(nproc) DEST=/opt/xgcc; \
+	fi
+
+RUN \
+	make -C/root/coreboot/util/crossgcc/ {{CROSSGCC_PARAM}} \
    	BUILD_LANGUAGES=c,ada CPUS=$(nproc) DEST=/opt/xgcc && \
-	cd /root && \
-	rm -rf coreboot
+	rm -rf /root/coreboot

RUN mkdir /home/coreboot/.ccache && \
    chown coreboot:coreboot /home/coreboot/.ccache && \