[Build] Error configure if openassetio-traitgen missing

Also rewords the previous status message to use the same case as the
command to aid debugging.

Closes OpenAssetIO#36

Signed-off-by: Tom Cowland <[email protected]>

Author: foundrytom

CMakeLists.txt

@@ -55,13 +55,15 @@ endif ()
 # directly mimic a non-generated project, and lowers risk that changes
 # to the library structure later on will encounter issues caused by the
 # generative nature of the project.
-message("Generating Traits with OpenAssetIO-TraitGen")
+message("Generating Traits with openassetio-traitgen")
 # Mark the traits source as a configure dependency by copying it to the
 # binary dir, and use that file to run traitgen from.
 # This means if the source traits file is changed, configure will rerun.
 configure_file(${CMAKE_CURRENT_LIST_DIR}/traits.yml ${PROJECT_BINARY_DIR}/traits.yml)
 execute_process(COMMAND openassetio-traitgen ${PROJECT_BINARY_DIR}/traits.yml
-                -o ${PROJECT_BINARY_DIR} -g cpp)
+                -o ${PROJECT_BINARY_DIR} -g cpp
+                COMMAND_ERROR_IS_FATAL ANY
+                COMMAND_ECHO STDERR)
 
 add_library(openassetio-mediacreation INTERFACE)
 # add alias so the project can be used with add_subdirectory

RELEASE_NOTES.md

@@ -8,6 +8,12 @@ v1.0.0-alpha.x
 
 - Updated `openassetio-traitgen` to `v1.0.0-alpha.6`.
 
+### Bug fixes
+
+- CMake will now fail at the configure stage if the
+  `openassetio-traitgen` command is not available.
+  [#36](https://github.com/OpenAssetIO/OpenAssetIO-MediaCreation/issues/36)
+
 v1.0.0-alpha.4
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