diff --git a/cmake/compilers/gnu.cmake b/cmake/compilers/gnu.cmake
index f52c54f8..15ed08b6 100644
--- a/cmake/compilers/gnu.cmake
+++ b/cmake/compilers/gnu.cmake
@@ -25,7 +25,3 @@ add_compile_options(-fno-strict-aliasing)
 # This is necessary to hide all symbols unless explicitly exported
 # via the Q_EXPORT macro
 add_compile_options(-fvisibility=hidden)
-
-if(CMAKE_INSTALL_PREFIX_INITIALIZED_TO_DEFAULT)
-    set(CMAKE_INSTALL_PREFIX /opt/quake3)
-endif()
diff --git a/cmake/platforms/all.cmake b/cmake/platforms/all.cmake
index 7d8ad9a9..f5cae409 100644
--- a/cmake/platforms/all.cmake
+++ b/cmake/platforms/all.cmake
@@ -1,4 +1,5 @@
 include(platforms/emscripten)
+include(platforms/linux)
 include(platforms/macos)
 include(platforms/unix)
 include(platforms/windows)
diff --git a/cmake/platforms/linux.cmake b/cmake/platforms/linux.cmake
new file mode 100644
index 00000000..d054d81a
--- /dev/null
+++ b/cmake/platforms/linux.cmake
@@ -0,0 +1,9 @@
+# Linux-like specific settings, i.e. including FreeBSD etc.
+
+if(NOT UNIX OR APPLE)
+    return()
+endif()
+
+if(CMAKE_INSTALL_PREFIX_INITIALIZED_TO_DEFAULT)
+    set_property(CACHE CMAKE_INSTALL_PREFIX PROPERTY VALUE /opt/quake3)
+endif()