diff --git a/README.md b/README.md
index 48c3e83..edf21c7 100644
--- a/README.md
+++ b/README.md
@@ -137,8 +137,9 @@ The version of PHP to install from source (a git branch, tag, or commit hash).
 
     php_source_clone_dir: "~/php-src"
     php_source_install_path: "/opt/php"
+    php_source_install_gmp_path: "/usr/include/x86_64-linux-gnu/gmp.h"
 
-Location where source will be cloned and installed, respectively.
+Location where source will be cloned and installed, and the location of the GMP header file (which can be platform/distribution specific).
 
     php_source_make_command: "make"
 
diff --git a/defaults/main.yml b/defaults/main.yml
index 15049fb..38822e2 100644
--- a/defaults/main.yml
+++ b/defaults/main.yml
@@ -57,6 +57,7 @@ php_install_from_source: false
 php_source_version: "master"
 php_source_clone_dir: "~/php-src"
 php_source_install_path: "/opt/php"
+php_source_install_gmp_path: "/usr/include/x86_64-linux-gnu/gmp.h"
 # For faster compile time: "make --jobs=X" where X is # of cores present.
 php_source_make_command: "make"
 php_source_configure_command: >
diff --git a/tasks/install-from-source.yml b/tasks/install-from-source.yml
index 1719814..25c7d41 100644
--- a/tasks/install-from-source.yml
+++ b/tasks/install-from-source.yml
@@ -45,9 +45,11 @@
   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
+    src: "{{ php_source_install_gmp_path }}"
     dest: /usr/include/gmp.h
     state: link
   when: gmp_file.stat.exists == false