gitlab-CI: Test 32-bit builds with the fedora-i386-cross container

After adding some missing packages, it's possible to check 32-bit
builds and tests with the fedora-i386-cross container in the gitlab-CI,
too. Unfortunately, the code in subprojects/ ignores the --extra-cflags
(on purpose), so the vhost-user part has to be disabled for this.

While we're at it, update the container to Fedora 31. Unfortunately the
gcc from the later versions emits some very dubious format-truncation
warnings, so Fedora 32 and 33 are currently unsuitable for this job.

Signed-off-by: Thomas Huth <thuth@redhat.com>
Reviewed-by: Wainer dos Santos Moschetta <wainersm@redhat.com>
Message-Id: <20201215083451.92322-1-thuth@redhat.com>
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>

.gitlab-ci.d/crossbuilds.yml

@@ -10,7 +10,7 @@
         --target-list-exclude="arm-softmmu cris-softmmu i386-softmmu
           microblaze-softmmu mips-softmmu mipsel-softmmu mips64-softmmu
           ppc-softmmu sh4-softmmu xtensa-softmmu"
-    - make -j$(expr $(nproc) + 1) all check-build
+    - make -j$(expr $(nproc) + 1) all check-build $MAKE_CHECK_ARGS
 
 # Job to cross-build specific accelerators.
 #
@@ -37,7 +37,7 @@
     - cd build
     - PKG_CONFIG_PATH=$PKG_CONFIG_PATH
       ../configure --enable-werror $QEMU_CONFIGURE_OPTS --disable-system
-    - make -j$(expr $(nproc) + 1) all check-build
+    - make -j$(expr $(nproc) + 1) all check-build $MAKE_CHECK_ARGS
 
 cross-armel-system:
   extends: .cross_system_build_job
@@ -69,6 +69,18 @@ cross-arm64-user:
   variables:
     IMAGE: debian-arm64-cross
 
+cross-i386-system:
+  extends: .cross_system_build_job
+  variables:
+    IMAGE: fedora-i386-cross
+    MAKE_CHECK_ARGS: check-qtest
+
+cross-i386-user:
+  extends: .cross_user_build_job
+  variables:
+    IMAGE: fedora-i386-cross
+    MAKE_CHECK_ARGS: check
+
 cross-mips-system:
   extends: .cross_system_build_job
   variables:

tests/docker/dockerfiles/fedora-i386-cross.docker

@@ -1,14 +1,26 @@
-FROM fedora:30
+FROM fedora:31
 ENV PACKAGES \
+    bzip2 \
+    diffutils \
+    findutils \
     gcc \
+    git \
+    libtasn1-devel.i686 \
+    libzstd-devel.i686 \
+    make \
+    meson \
+    ninja-build \
     glib2-devel.i686 \
     glibc-devel.i686 \
     glibc-static.i686 \
     gnutls-devel.i686 \
     nettle-devel.i686 \
+    perl-Test-Harness \
     pixman-devel.i686 \
-    zlib-devel.i686 \
-    libzstd-devel.i686
+    zlib-devel.i686
+
+ENV QEMU_CONFIGURE_OPTS --extra-cflags=-m32 --disable-vhost-user
+ENV PKG_CONFIG_PATH /usr/lib/pkgconfig
 
 RUN dnf install -y $PACKAGES
 RUN rpm -q $PACKAGES | sort > /packages.txt