gitlab-ci: Add cross-compiling build tests

Now that we can use all our QEMU test containers in the gitlab-CI, we can
easily add some jobs that test cross-compilation for various architectures.
There is just only small ugliness: Since the shared runners on gitlab.com
are single-threaded, we have to split each compilation job into two parts
(--disable-user and --disable-system), and exclude some additional targets,
to avoid that the jobs are running too long and hitting the timeout of 1 h.

Message-Id: <20200823111757.72002-8-thuth@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Signed-off-by: Thomas Huth <thuth@redhat.com>

.gitlab-ci.d/crossbuilds.yml

@@ -0,0 +1,113 @@
+
+.cross_system_build_job_template: &cross_system_build_job_definition
+  stage: build
+  image: $CI_REGISTRY_IMAGE/qemu/$IMAGE:latest
+  script:
+    - mkdir build
+    - cd build
+    - PKG_CONFIG_PATH=$PKG_CONFIG_PATH
+      ../configure --enable-werror $QEMU_CONFIGURE_OPTS --disable-user
+        --target-list-exclude="aarch64-softmmu i386-softmmu microblaze-softmmu
+          mips-softmmu mipsel-softmmu mips64-softmmu ppc64-softmmu sh4-softmmu
+          xtensa-softmmu"
+    - make -j$(expr $(nproc) + 1) all check-build
+
+.cross_user_build_job_template: &cross_user_build_job_definition
+  stage: build
+  image: $CI_REGISTRY_IMAGE/qemu/$IMAGE:latest
+  script:
+    - mkdir build
+    - cd build
+    - PKG_CONFIG_PATH=$PKG_CONFIG_PATH
+      ../configure --enable-werror $QEMU_CONFIGURE_OPTS --disable-system
+    - make -j$(expr $(nproc) + 1) all check-build
+
+cross-armel-system:
+  <<: *cross_system_build_job_definition
+  variables:
+    IMAGE: debian-armel-cross
+
+cross-armel-user:
+  <<: *cross_user_build_job_definition
+  variables:
+    IMAGE: debian-armel-cross
+
+cross-armhf-system:
+  <<: *cross_system_build_job_definition
+  variables:
+    IMAGE: debian-armhf-cross
+
+cross-armhf-user:
+  <<: *cross_user_build_job_definition
+  variables:
+    IMAGE: debian-armhf-cross
+
+cross-arm64-system:
+  <<: *cross_system_build_job_definition
+  variables:
+    IMAGE: debian-arm64-cross
+
+cross-arm64-user:
+  <<: *cross_user_build_job_definition
+  variables:
+    IMAGE: debian-arm64-cross
+
+cross-mips-system:
+  <<: *cross_system_build_job_definition
+  variables:
+    IMAGE: debian-mips-cross
+
+cross-mips-user:
+  <<: *cross_user_build_job_definition
+  variables:
+    IMAGE: debian-mips-cross
+
+cross-mipsel-system:
+  <<: *cross_system_build_job_definition
+  variables:
+    IMAGE: debian-mipsel-cross
+
+cross-mipsel-user:
+  <<: *cross_user_build_job_definition
+  variables:
+    IMAGE: debian-mipsel-cross
+
+cross-mips64el-system:
+  <<: *cross_system_build_job_definition
+  variables:
+    IMAGE: debian-mips64el-cross
+
+cross-mips64el-user:
+  <<: *cross_user_build_job_definition
+  variables:
+    IMAGE: debian-mips64el-cross
+
+cross-ppc64el-system:
+  <<: *cross_system_build_job_definition
+  variables:
+    IMAGE: debian-ppc64el-cross
+
+cross-ppc64el-user:
+  <<: *cross_user_build_job_definition
+  variables:
+    IMAGE: debian-ppc64el-cross
+
+cross-s390x-system:
+  <<: *cross_system_build_job_definition
+  variables:
+    IMAGE: debian-s390x-cross
+
+cross-s390x-user:
+  <<: *cross_user_build_job_definition
+  variables:
+    IMAGE: debian-s390x-cross
+
+cross-win32-system:
+  <<: *cross_system_build_job_definition
+  variables:
+    IMAGE: debian-win32-cross
+
+cross-win64-system:
+  <<: *cross_system_build_job_definition
+  variables:
+    IMAGE: debian-win64-cross

.gitlab-ci.yml

@@ -18,6 +18,7 @@ include:
   - local: '/.gitlab-ci.d/edk2.yml'
   - local: '/.gitlab-ci.d/opensbi.yml'
   - local: '/.gitlab-ci.d/containers.yml'
+  - local: '/.gitlab-ci.d/crossbuilds.yml'
 
 .native_build_job_template: &native_build_job_definition
   stage: build

MAINTAINERS

@@ -3071,6 +3071,7 @@ M: Alex Bennée <alex.bennee@linaro.org>
 R: Wainer dos Santos Moschetta <wainersm@redhat.com>
 S: Maintained
 F: .gitlab-ci.yml
+F: .gitlab-ci.d/crossbuilds.yml
 
 Guest Test Compilation Support
 M: Alex Bennée <alex.bennee@linaro.org>