ci: add Circle CI definition

Circle CI provides bare metal test systems which are a very good
environment for the CRIU test cases. This adds two CI runs on Circle CI.

On Circle CI it is necessary to tell clang to use '-Wl,-z,now', because
gcc has it hard-coded in Ubuntu and clang does not.

Signed-off-by: Adrian Reber <areber@redhat.com>

.circleci/config.yml

@@ -0,0 +1,27 @@
+version: 2.1
+jobs:
+  test-local-gcc:
+    machine:
+      image: ubuntu-2004:202010-01
+    working_directory: ~/criu
+    steps:
+      - checkout
+      - run:
+          name: "Test local with GCC"
+          command: sudo -E make -C scripts/ci local
+  test-local-clang:
+    machine:
+      image: ubuntu-2004:202010-01
+    working_directory: ~/criu
+    steps:
+      - checkout
+      - run:
+          name: "Test local with CLANG"
+          command: sudo -E make -C scripts/ci local CLANG=1
+
+workflows:
+  version: 2
+  builds:
+    jobs:
+      - test-local-gcc
+      - test-local-clang

.travis.yml

@@ -5,17 +5,11 @@ cache: ccache
 services:
   - docker
 env:
-  - TR_ARCH=local
-  - TR_ARCH=local       CLANG=1
   - TR_ARCH=local       COMPAT_TEST=y
   - TR_ARCH=local       CLANG=1 COMPAT_TEST=y
   - TR_ARCH=vagrant-fedora-no-vdso
 jobs:
   include:
-    - os: linux
-      arch: amd64
-      env: TR_ARCH=local
-      dist: focal
     - os: linux
       arch: ppc64le
       env: TR_ARCH=local

scripts/ci/run-ci-tests.sh

@@ -97,6 +97,12 @@ test_stream() {
 
 ci_prep
 
+if [ "$CLANG" = "1" ]; then
+	# Needed for clang on Circle CI
+	LDFLAGS="$LDFLAGS -Wl,-z,now"
+	export LDFLAGS
+fi
+
 export GCOV
 $CC --version
 time make CC="$CC" -j4
@@ -204,7 +210,7 @@ if [ -z "$SKIP_EXT_DEV_TEST" ]; then
 fi
 #make -C test/others/exec/ run
 make -C test/others/make/ run CC="$CC"
-if [ -n "$TRAVIS" ]; then
+if [ -n "$TRAVIS" ] || [ -n "$CIRCLECI" ]; then
        # GitHub Actions does not provide a real TTY and CRIU will fail with:
        # Error (criu/tty.c:1014): tty: Don't have tty to inherit session from, aborting
        make -C test/others/shell-job/ run