Another try at 32/64 gcc/clang

.travis.yml

@@ -1,13 +1,11 @@
 language: c
 dist: trusty
-compiler:
-    - gcc
-    - clang
 
 matrix:
     include:
         - os: linux
           env: BUILD=x86_64-linux-gnu
+          compiler: gcc
 
         - os: linux
           env: BUILD=i686-linux-gnu CFLAGS=-m32
@@ -15,6 +13,19 @@ matrix:
               apt:
                   packages:
                       - gcc-multilib
+          compiler: gcc
+
+        - os: linux
+          env: BUILD=x86_64-linux-gnu
+          compiler: clang
+
+        - os: linux
+          env: BUILD=i686-linux-gnu CFLAGS=-m32
+          compiler: clang
+          addons:
+              apt:
+                  packages:
+                      - gcc-multilib
 
 script:
     - ./bootstrap && ./configure && make