Default build type selection

1 files changed, 19 insertions, 0 deletions

diff --git a/BuildType.cmake b/BuildType.cmake
new file mode 100644
index 00000000..ef031eac
--- /dev/null
+++ b/BuildType.cmake
@@ -0,0 +1,19 @@
+# https://blog.kitware.com/cmake-and-the-default-build-type/
+
+# Set a default build type if none was specified
+set (default_build_type "Release")
+if (EXISTS "${CMAKE_SOURCE_DIR}/.git")
+    set (default_build_type "Debug")
+endif ()
+ 
+if (NOT CMAKE_BUILD_TYPE AND NOT CMAKE_CONFIGURATION_TYPES)
+    message (STATUS "Setting build type to '${default_build_type}' as none was specified.")
+    set (CMAKE_BUILD_TYPE "${default_build_type}" 
+        CACHE STRING "Choose the type of build." FORCE
+    )
+    # Set the possible values of build type for cmake-gui
+    set_property (CACHE CMAKE_BUILD_TYPE PROPERTY 
+        STRINGS "Debug" "Release" "MinSizeRel" "RelWithDebInfo"
+    )
+endif()
+