New hamcorebuilder implementation, independent from Cedar and Mayaqua

This new implementation can be easily compiled and executed without the need for other components to be present.

It relies on standard C functions, aside from stat() which is part of POSIX but available on Windows as well.

There's only one third-party dependency, which is tinydir: a single-file header-only library for traversing directories.

src/hamcorebuilder/CMakeLists.txt

@@ -1,3 +1,21 @@
-add_executable(hamcorebuilder hamcorebuilder.c)
+include(TestBigEndian)
 
-target_link_libraries(hamcorebuilder cedar mayaqua)
+add_executable(hamcorebuilder
+  main.c
+  FileSystem.c
+  FileSystem.h
+)
+
+if(WIN32)
+  target_compile_definitions(hamcorebuilder PRIVATE "OS_WINDOWS")
+endif()
+
+test_big_endian(BIG_ENDIAN)
+if(BIG_ENDIAN)
+  target_compile_definitions(hamcorebuilder PRIVATE "BYTE_ORDER_BIG_ENDIAN")
+endif()
+
+target_include_directories(hamcorebuilder PRIVATE "${TOP_DIRECTORY}/3rdparty/tinydir")
+
+find_package(ZLIB REQUIRED)
+target_link_libraries(hamcorebuilder PRIVATE ZLIB::ZLIB)