diff --git a/.travis.yml b/.travis.yml
index 341aaa8..5523adc 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,5 +1,9 @@
+# sudo required as tests set cpu affinity
+sudo: false
+
 os:
   - linux
+  - linux-ppc64le
   - osx
 
 language:
@@ -9,4 +13,28 @@ compiler:
   - gcc
   - clang
 
-script: ./tools/ci-build.sh
+matrix:
+  exclude:
+    - os: osx
+      compiler: gcc
+addons:
+  apt:
+    sources:
+      - ubuntu-toolchain-r-test
+      - llvm-toolchain-trusty-6.0
+    packages:
+      - gcc-8
+      - clang-6.0
+
+script:
+  - >
+    if [[ $TRAVIS_OS_NAME == linux ]]; then
+      case "$CC" in
+        gcc) export CC=gcc-8 ;;
+        clang) export CC=clang-6.0 ;;
+      esac
+    fi
+  - ${CC} --version
+  - export CFLAGS="-DITERATE=400 -DPAIRS_S=100 -DITERATIONS=24"
+  - ./tools/ci-build.sh --cores=4
+  - make check
diff --git a/regressions/common.h b/regressions/common.h
index f67c2af..6e53483 100644
--- a/regressions/common.h
+++ b/regressions/common.h
@@ -285,7 +285,10 @@ aff_iterate(struct affinity *acb)
 	CPU_ZERO(&s);
 	CPU_SET(c % CORES, &s);
 
-	return sched_setaffinity(gettid(), sizeof(s), &s);
+	if (sched_setaffinity(gettid(), sizeof(s), &s) != 0)
+		perror("WARNING: Could not affine thread");
+	
+        return 0;
 }
 
 CK_CC_UNUSED static int
@@ -297,7 +300,10 @@ aff_iterate_core(struct affinity *acb, unsigned int *core)
 	CPU_ZERO(&s);
 	CPU_SET((*core) % CORES, &s);
 
-	return sched_setaffinity(gettid(), sizeof(s), &s);
+	if (sched_setaffinity(gettid(), sizeof(s), &s) != 0)
+		perror("WARNING: Could not affine thread");
+	
+        return 0;
 }
 #elif defined(__MACH__)
 CK_CC_UNUSED static int
diff --git a/tools/ci-build.sh b/tools/ci-build.sh
index 6d57655..9657303 100755
--- a/tools/ci-build.sh
+++ b/tools/ci-build.sh
@@ -4,6 +4,6 @@
 ##############################################################################
 
 set -x
-./configure
+./configure $@
 make -j