Maybe need to update the apache version.

Author: ianamason

.travis.yml

@@ -33,10 +33,10 @@ script:
 #  - python -m unittest discover test/ || exit 1
   - export WLLVM_HOME=`pwd`
   - ${WLLVM_HOME}/.travis/store.sh
-  - export APACHE_VER=2.4.18
+  - export APACHE_VER=2.4.39
   # build apache with clang
   - ${WLLVM_HOME}/.travis/apache_clang.sh
   # build apache with gcc and dragonegg
   - ${WLLVM_HOME}/.travis/apache_dragonegg.sh
   # build musllvm with clang
-  #- ${WLLVM_HOME}/.travis/musllvm.sh
+  - ${WLLVM_HOME}/.travis/musllvm.sh