Enable source maps for Emscripten debug builds

Author: SpaceManiac

run

@@ -166,6 +166,7 @@ if test -z "$nobuild"; then
 			# Single project: build and install just that project.
 			make preset="$preset" "$project"
 			cmake --install "$cmakedir" --component "$project"/web --config Debug
+			cmake --install "$cmakedir" --component generic/web --config Debug
 		else
 			# Otherwise, build and install everything.
 			make preset="$preset" install

source/ham_executable.cmake

@@ -187,7 +187,13 @@ function(HamSandwich_add_executable target_name)
 
 		target_link_libraries("${target_name}" idbfs.js)
 		if(CMAKE_BUILD_TYPE STREQUAL "Debug")
-			target_link_options("${target_name}" PRIVATE --emrun)
+			target_link_options("${target_name}" PRIVATE --emrun -gsource-map)
+			install(
+				FILES
+				"${CMAKE_CURRENT_BINARY_DIR}/${target_name}.wasm.map"
+				DESTINATION "."
+				COMPONENT "${target_name}/web"
+			)
 		endif()
 
 		install(
@@ -296,3 +302,15 @@ else()
 	function(msvc_compile_options)
 	endfunction()
 endif()
+
+# Emscripten source map links
+if(EMSCRIPTEN AND CMAKE_BUILD_TYPE STREQUAL "Debug")
+	install(
+		CODE [[
+			file(CREATE_LINK "${CMAKE_SOURCE_DIR}/source" "${CMAKE_INSTALL_PREFIX}/source" SYMBOLIC)
+			file(CREATE_LINK "${CMAKE_SOURCE_DIR}/external" "${CMAKE_INSTALL_PREFIX}/external" SYMBOLIC)
+			file(CREATE_LINK "${CMAKE_SOURCE_DIR}/external/emsdk/upstream" "${CMAKE_INSTALL_PREFIX}/emsdk" SYMBOLIC)
+		]]
+		COMPONENT generic/web
+	)
+endif()