Fixed tests for Travis.

.travis.yml

@@ -33,11 +33,12 @@ script:
   # Run the role/playbook in --check mode.
   - "ansible-playbook -i tests/inventory tests/$SITE --connection=local --sudo --check"
 
-  - find / -name 'gmp.h'
-
-  # Make sure PHP is running.
+  # Make sure PHP is available.
   - >
     php -v
     | grep -q 'The PHP Group'
     && (echo 'PHP is installed' && exit 0)
     || (echo 'PHP is not installed' && exit 1)
+
+  # And for posterity...
+  - php -v

tasks/install-from-source.yml

@@ -41,11 +41,16 @@
     - librecode-dev
   when: ansible_os_family == 'Debian'
 
+- name: Check if gmp.h is already in a location accessible to gcc.
+  stat: path=/usr/include/gmp.h
+  register: gmp_file
+
 - name: Ensure gmp.h is symlinked into a location accessible to gcc.
   file:
     src: /usr/include/x86_64-linux-gnu/gmp.h
     dest: /usr/include/gmp.h
     state: link
+  when: gmp_file.stat.exists == false
 
 - name: Clone the PHP repository.
   git: