ci: add travis ci support for native aarch64

Add Travis compilation jobs for native aarch64. gcc/clang compilations
for static/shared libraries are added.

Some limitations for current aarch64 Travis support:
1. Container is used. Huge page is not available due to security reason.
2. Missing kernel header package in Xenial distribution.

Solutions to address the limitations:
1. Not to add unit test for now. And run tests with no-huge in future.
2. Use Bionic distribution for all aarch64 jobs.

Signed-off-by: Ruifeng Wang <ruifeng.wang@arm.com>
Reviewed-by: Gavin Hu <gavin.hu@arm.com>
Acked-by: Aaron Conole <aconole@redhat.com>

.ci/linux-setup.sh

@@ -3,7 +3,10 @@
 # need to install as 'root' since some of the unit tests won't run without it
 sudo python3 -m pip install --upgrade 'meson==0.47.1'
 
-# setup hugepages
-cat /proc/meminfo
-sudo sh -c 'echo 1024 > /proc/sys/vm/nr_hugepages'
-cat /proc/meminfo
+# skip hugepage settings if tests will not run
+if [ "$RUN_TESTS" = "1" ]; then
+    # setup hugepages
+    cat /proc/meminfo
+    sudo sh -c 'echo 1024 > /proc/sys/vm/nr_hugepages'
+    cat /proc/meminfo
+fi

.travis.yml

@@ -115,6 +115,46 @@ matrix:
       apt:
         packages:
           - *extra_packages
-
+  - env: DEF_LIB="static"
+    arch: arm64
+    compiler: gcc
+    dist: bionic
+    addons:
+      apt:
+        packages:
+          - *required_packages
+  - env: DEF_LIB="shared"
+    arch: arm64
+    compiler: gcc
+    dist: bionic
+    addons:
+      apt:
+        packages:
+          - *required_packages
+  - env: DEF_LIB="static"
+    arch: arm64
+    dist: bionic
+    compiler: clang
+    addons:
+      apt:
+        packages:
+          - *required_packages
+  - env: DEF_LIB="shared"
+    arch: arm64
+    dist: bionic
+    compiler: clang
+    addons:
+      apt:
+        packages:
+          - *required_packages
+  - env: DEF_LIB="shared" OPTS="-Denable_kmods=false" BUILD_DOCS=1
+    arch: arm64
+    compiler: gcc
+    dist: bionic
+    addons:
+      apt:
+        packages:
+          - *required_packages
+          - *doc_packages
 
 script: ./.ci/${TRAVIS_OS_NAME}-build.sh