fix: main.cpp generation fails when multiple build configs are running

Generate the file in the build directory so that multiple build configure operation can
run simultaneously without conflicting with each other due to the generated file being
in the source tree.

tools/version-info/CMakeLists.txt

@@ -36,16 +36,17 @@ asap_declare_module(
 # Code generation
 # ------------------------------------------------------------------------------
 
-# Generate version-header
-configure_file(src/main.cpp.in ${CMAKE_CURRENT_SOURCE_DIR}/src/main.cpp)
+# Generate the main.cpp file
+set(generated_main ${CMAKE_CURRENT_BINARY_DIR}/src/main.cpp)
+configure_file(src/main.cpp.in ${generated_main})
 
 # ------------------------------------------------------------------------------
 # Main module target
 # ------------------------------------------------------------------------------
 
 set(MODULE_TARGET_NAME "${META_PROJECT_NAME}-${META_MODULE_NAME}")
 
-asap_add_executable(${MODULE_TARGET_NAME} WARNING SOURCES "src/main.cpp")
+asap_add_executable(${MODULE_TARGET_NAME} WARNING SOURCES ${generated_main})
 
 target_compile_features(${MODULE_TARGET_NAME} PUBLIC cxx_constexpr)