cmake: build-id: specify current working directory

CMakeLists.txt

@@ -11,6 +11,10 @@ if (NOT DEFINED bshell_verbose)
 	set(bshell_verbose 0)
 endif ()
 
+if (NOT DEFINED bshell_enable_floating_point)
+	set(bshell_enable_floating_point 1)
+endif ()
+
 set(required_fx_assemblies fx.runtime fx.collections)
 
 if (bshell_interactive)
@@ -23,6 +27,7 @@ find_package(FX REQUIRED COMPONENTS ${required_fx_assemblies})
 execute_process(
 	COMMAND ${Python_EXECUTABLE}
 		${CMAKE_CURRENT_SOURCE_DIR}/tools/build-id.py
+		--source-dir "${CMAKE_CURRENT_SOURCE_DIR}"
 	OUTPUT_VARIABLE bshell_version)
 message(STATUS "B Shell version: ${bshell_version}")