Improve CMake bits

cmake/SphinxUtils.cmake

@@ -1,4 +1,7 @@
-# SetupSphinx.cmake - Find Sphinx for CI environments
+# Sphinx related utilities
+
+set(SPHINX_SOURCE ${CMAKE_CURRENT_SOURCE_DIR}/source)
+set(SPHINX_BUILD ${CMAKE_BINARY_DIR})
 
 # Function to find Sphinx in the system
 function(setup_sphinx_environment)
@@ -15,3 +18,11 @@ function(setup_sphinx_environment)
     # Export to parent scope
     set(SPHINX_EXECUTABLE "${SPHINX_EXECUTABLE}" PARENT_SCOPE)
 endfunction()
+
+# Function to add a Sphinx builder target
+function(add_sphinx_builder builder_name)
+    add_custom_target(${builder_name}
+        COMMAND ${SPHINX_EXECUTABLE} -b ${builder_name} ${SPHINX_SOURCE} ${SPHINX_BUILD}/${builder_name}
+        VERBATIM
+    )
+endfunction()