Add support for object libraries

Closes #34

include/project_parser.hpp

@@ -45,6 +45,7 @@ enum TargetType {
     target_static,
     target_interface,
     target_custom,
+    target_object,
 };
 
 template <typename T>

src/cmake_generator.cpp

@@ -766,6 +766,12 @@ void generate_cmake(const char *path, const parser::Project *parent_project) {
                 target_type = "SOURCES";
                 target_scope = "PUBLIC";
                 break;
+            case parser::target_object:
+                // NOTE: This is properly supported since 3.12
+                add_command = "add_library";
+                target_type = "OBJECT";
+                target_scope = "PUBLIC";
+                break;
             default:
                 assert("Unimplemented enum value" && false);
             }

src/project_parser.cpp

@@ -9,7 +9,7 @@
 #include <tsl/ordered_set.h>
 
 template <>
-const char *enumStrings<cmkr::parser::TargetType>::data[] = {"executable", "library", "shared", "static", "interface", "custom"};
+const char *enumStrings<cmkr::parser::TargetType>::data[] = {"executable", "library", "shared", "static", "interface", "custom", "object"};
 
 namespace cmkr {
 namespace parser {