travis: Only one build should collect coverage

.travis.yml

@@ -4,13 +4,10 @@ language: c
 
 env:
   - BUILD_OPTS="--prefix=/usr --libdir=/usr/lib64"
+  - BUILD_OPTS="--prefix=/usr --libdir=/usr/lib64 --enable-coverage" COVERAGE=yes SRCDIR=/coverage BUILDDIR=/coverage
   - BUILD_OPTS="--prefix=/usr --libdir=/usr/lib64 CFLAGS='-fsanitize=address -g -fno-common -U_FORTIFY_SOURCE' CXXFLAGS='-fsanitize=address -g -fno-common -U_FORTIFY_SOURCE' LDFLAGS='-fsanitize=address -g -fno-common -U_FORTIFY_SOURCE' LIBS='-ldl -lpthread'"
   - BUILD_OPTS="--prefix=/usr --libdir=/usr/lib64 CFLAGS='-fsanitize=undefined -g -fno-common -U_FORTIFY_SOURCE' CXXFLAGS='-fsanitize=undefined -g -fno-common -U_FORTIFY_SOURCE' LDFLAGS='-fsanitize=undefined -g -fno-common -U_FORTIFY_SOURCE' LIBS='-ldl -lpthread'"
 
-matrix:
-  allow_failures:
-    - env: BUILD_OPTS="--prefix=/usr --libdir=/usr/lib64 CFLAGS='-fsanitize=address -g -fno-common -U_FORTIFY_SOURCE' CXXFLAGS='-fsanitize=address -g -fno-common -U_FORTIFY_SOURCE' LDFLAGS='-fsanitize=address -g -fno-common -U_FORTIFY_SOURCE' LIBS='-ldl -lpthread'"
-
 services:
   - docker
 
@@ -34,9 +31,8 @@ install:
 
 script:
   - docker exec $CONTAINER su - user sh -c "cd /srcdir && NOCONFIGURE=1 ./autogen.sh"
-  - docker exec $CONTAINER su - user sh -c "cd /srcdir && ./configure --enable-code-coverage $BUILD_OPTS"
+  - docker exec $CONTAINER su - user sh -c "cd /srcdir && ./configure $BUILD_OPTS"
   - docker exec $CONTAINER su - user sh -c "cd /srcdir && make V=1 && touch po/libskk.pot && make check V=1"
 
 after_success:
-  - docker exec $CONTAINER pip install cpp-coveralls
-  - docker exec -e TRAVIS_JOB_ID="$TRAVIS_JOB_ID" -e TRAVIS_BRANCH="$TRAVIS_BRANCH" $CONTAINER sh -c "cd /srcdir && coveralls --exclude tools --exclude tests --gcov-options '\-lp'"
+  - if test x"$COVERAGE" = xyes; then docker exec $CONTAINER pip install cpp-coveralls; docker exec -e TRAVIS_JOB_ID="$TRAVIS_JOB_ID" -e TRAVIS_BRANCH="$TRAVIS_BRANCH" $CONTAINER sh -c "cd /srcdir && coveralls --exclude tools --exclude tests --gcov-options '\-lp'"; fi