chore(cmake): cmake license header, update a bit

Instead of using set_target_properties on all tool binaries,
instead we can use target_compile_features([xxx] PUBLIC cxx_std_20).

This properly alienates projects which depend on libeuropa, allowing the src/tools CMakeLists to be trimmed down quite a bit.

Also fixes a build break I accidentally introduced.

CMakeLists.txt

@@ -1,3 +1,11 @@
+#
+# EuropaTools
+#
+# (C) 2021-2022 modeco80 <lily.modeco80@protonmail.ch>
+#
+# SPDX-License-Identifier: GPL-3.0-or-later
+#
+
 cmake_minimum_required(VERSION 3.10)
 
 # Prohibit in-source tree builds.
@@ -7,7 +15,11 @@ endif()
 
 include(cmake/Policies.cmake)
 
-project(EuropaTools)
+project(EuropaTools
+        VERSION 0.0.1 # Placeholder for sem-ver usage. Replace with real value later.
+        LANGUAGES C CXX
+        DESCRIPTION "Tools for working with LEC Europa based games (Star Wars: Starfighter & Star Wars: Jedi Starfighter)"
+        )
 
 add_subdirectory(third_party/libpixel)
 add_subdirectory(third_party/indicators)

cmake/Policies.cmake

@@ -1,3 +1,11 @@
+#
+# EuropaTools
+#
+# (C) 2021-2022 modeco80 <lily.modeco80@protonmail.ch>
+#
+# SPDX-License-Identifier: GPL-3.0-or-later
+#
+
 # CMake policy configuration
 
 # Macro to enable new CMake policy.

include/europa/io/PakWriter.h

@@ -21,7 +21,7 @@ namespace europa::io {
 	 * Writer for package files.
 	 */
 	struct PakWriter {
-		void Init(structs::PakVersion version);
+		void Init(structs::PakHeader::Version version);
 
 		std::unordered_map<std::string, PakFile>& GetFiles();
 

src/libeuropa/CMakeLists.txt

@@ -1,4 +1,10 @@
- 
+#
+# EuropaTools
+#
+# (C) 2021-2022 modeco80 <lily.modeco80@protonmail.ch>
+#
+# SPDX-License-Identifier: GPL-3.0-or-later
+#
 
 add_library(libeuropa
 		# Implementation details
@@ -15,10 +21,7 @@ add_library(libeuropa
 
 target_include_directories(libeuropa PUBLIC ${PROJECT_SOURCE_DIR}/include)
 
-set_target_properties(libeuropa PROPERTIES
+target_compile_features(libeuropa PUBLIC cxx_std_20)
-		CXX_STANDARD 20
-		CXX_STANDARD_REQUIRED ON
-		)
 
 # Projects which libeuropa depends on
 target_link_libraries(libeuropa PUBLIC

src/libeuropa/io/PakWriter.cpp

@@ -17,7 +17,7 @@
 
 namespace europa::io {
 
-	void PakWriter::Init(structs::PakVersion version) {
+	void PakWriter::Init(structs::PakHeader::Version version) {
 		// for now.
 		pakHeader.Init(version);
 	}
@@ -87,7 +87,7 @@ namespace europa::io {
 
 		// Version 5 paks seem to have an additional bit of reserved data
 		// (which is all zeros.)
-		if(pakHeader.version == structs::PakVersion::Ver2) {
+		if(pakHeader.version == structs::PakHeader::Version::Ver5) {
 			os.seekp(6, std::ostream::cur);
 		}
 

src/tools/CMakeLists.txt

@@ -1,3 +1,11 @@
+#
+# EuropaTools
+#
+# (C) 2021-2022 modeco80 <lily.modeco80@protonmail.ch>
+#
+# SPDX-License-Identifier: GPL-3.0-or-later
+#
+
 add_executable(europa_pack_extractor europa_pack_extractor.cpp)
 
 target_link_libraries(europa_pack_extractor PUBLIC
@@ -5,11 +13,6 @@ target_link_libraries(europa_pack_extractor PUBLIC
 		indicators::indicators
 		)
 
-set_target_properties(europa_pack_extractor PROPERTIES
-		CXX_STANDARD 20
-		CXX_STANDARD_REQUIRED ON
-		)
-
 add_executable(pakcreate pakcreate.cpp)
 
 target_link_libraries(pakcreate PUBLIC
@@ -17,30 +20,14 @@ target_link_libraries(pakcreate PUBLIC
 		indicators::indicators
 		)
 
-set_target_properties(pakcreate PROPERTIES
-		CXX_STANDARD 20
-		CXX_STANDARD_REQUIRED ON
-		)
-
-
 add_executable(texdump texdump.cpp)
 
 target_link_libraries(texdump PUBLIC
 		libeuropa
 		)
 
-set_target_properties(texdump PROPERTIES
-		CXX_STANDARD 20
-		CXX_STANDARD_REQUIRED ON
-		)
-
 add_executable(paktest paktest.cpp)
 
 target_link_libraries(paktest PUBLIC
 		libeuropa
 		)
-
-set_target_properties(paktest PROPERTIES
-		CXX_STANDARD 20
-		CXX_STANDARD_REQUIRED ON
-		)

src/tools/pakcreate.cpp

@@ -32,11 +32,11 @@ int main(int argc, char** argv) {
 	if(argv[3] != nullptr) {
 		if(!strcmp(argv[3], "--jedi")) {
 			std::cout << "Writing Jedi Starfighter archive\n";
-			writer.Init(structs::PakVersion::Ver2);
+			writer.Init(structs::PakHeader::Version::Ver5);
 		}
 	} else {
 		std::cout << "Writing Starfighter archive\n";
-		writer.Init(structs::PakVersion::Starfighter);
+		writer.Init(structs::PakHeader::Version::Ver4);
 	}
 
 	for(auto& ent : fs::recursive_directory_iterator(argv[1])) {