I added cmake.

CMakeLists.txt

@@ -0,0 +1,53 @@
+cmake_minimum_required(VERSION 3.12)
+
+project(libtoolchain
+    VERSION 1.0.0
+    LANGUAGES CXX C
+)
+
+# Set C++ standard
+set(CMAKE_CXX_STANDARD 11)
+set(CMAKE_CXX_STANDARD_REQUIRED ON)
+
+# Platform detection
+if(WIN32)
+    set(PLATFORM_NAME "win32")
+elseif(APPLE)
+    set(PLATFORM_NAME "macos")
+else()
+    set(PLATFORM_NAME "linux")
+endif()
+
+# Output directories
+set(CMAKE_ARCHIVE_OUTPUT_DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR}/bin/${PLATFORM_NAME})
+
+# Collect source files from all subdirectories
+file(GLOB_RECURSE TOOLCHAIN_SOURCES
+    ${CMAKE_CURRENT_SOURCE_DIR}/src/*.cpp
+    ${CMAKE_CURRENT_SOURCE_DIR}/src/*.cc
+    ${CMAKE_CURRENT_SOURCE_DIR}/src/*.c
+)
+
+# Create static library
+add_library(toolchain STATIC ${TOOLCHAIN_SOURCES})
+
+# Include directories
+target_include_directories(toolchain
+    PUBLIC
+        ${CMAKE_CURRENT_SOURCE_DIR}/include
+)
+
+# Link dependencies
+target_link_libraries(toolchain
+    PUBLIC
+        mbedtls
+        fmt
+)
+
+# Compiler flags
+if(NOT MSVC)
+    target_compile_options(toolchain PRIVATE -Wall -Wno-unused-value -Wno-unused-but-set-variable -fPIC)
+    if(APPLE)
+        target_compile_options(toolchain PRIVATE -Wno-unused-private-field)
+    endif()
+endif()

include/tc/crypto/detail/CmacImpl.h

@@ -145,7 +145,7 @@ class CmacImpl
 		if (mState == State::Initialized)
 		{
 			// finalise mac, and tranisition to done state
-			std::array<byte_t, kBlockSize> M_last;
+			std::array<byte_t, kBlockSize> M_last = {};
 
 			// 1) transform last unprocessed to M_last block
 			if (mUnprocessedBlockPos == kBlockSize)

include/tc/io/FileStream.h

@@ -26,7 +26,7 @@
 #include <tc/io/PathTooLongException.h>
 
 #ifdef _WIN32
-#include <Windows.h>
+#include <windows.h>
 #else
 #include <cstdio>
 #endif

include/tc/types.h

@@ -20,7 +20,9 @@
 #include <tc/bn.h>
 
 #ifdef _WIN32
+#ifndef NOMINMAX
 #define NOMINMAX
+#endif
 #endif
 
 	/// Alias uint8_t to byte_t to more explicity indicate its role in memory related contexts
@@ -62,4 +64,4 @@ namespace tc {
 
 		/// Returns if a value of type uint64_t is too large to be stored as size_t.
 	bool is_uint64_t_too_large_for_size_t(uint64_t val);
-}
+}

src/io/FileStream.cpp

@@ -198,7 +198,9 @@ void tc::io::FileStream::dispose()
 
 #ifdef _WIN32
 
+#ifdef _MSC_VER
 #pragma warning(disable : 4065) // disable warning for switch case with only default case
+#endif
 
 void tc::io::FileStream::open_impl(const tc::io::Path& path, FileMode mode, FileAccess access)
 {
@@ -272,7 +274,7 @@ void tc::io::FileStream::open_impl(const tc::io::Path& path, FileMode mode, File
 	}
 
 	// append can only open in write only mode
-	if (mode == tc::io::FileMode::Append && (access_flag & GENERIC_READ | GENERIC_WRITE) != GENERIC_WRITE)
+	if (mode == tc::io::FileMode::Append && (access_flag & (GENERIC_READ | GENERIC_WRITE)) != GENERIC_WRITE)
 	{
 		throw tc::ArgumentException(kClassName + "::open()", "Stream opened in Append mode can only work with Write access. ReadWrite is not permitted");
 	}
@@ -443,7 +445,9 @@ void tc::io::FileStream::flush_impl()
 	}
 }
 
+#ifdef _MSC_VER
 #pragma warning(default : 4065)  // reenable warning for switch case with only default case
+#endif
 
 #else
 void tc::io::FileStream::open_impl(const tc::io::Path& path, FileMode mode, FileAccess access)

src/io/LocalFileSystem.cpp

@@ -9,7 +9,9 @@
 #include <direct.h>
 #include <cstdlib>
 
+#ifdef _MSC_VER
 #pragma warning(disable : 4065) // disable warning for switch case with only default case
+#endif
 
 #else
 #include <sys/stat.h>
@@ -580,6 +582,8 @@ void tc::io::LocalFileSystem::getDirectoryChildren(const std::string& method_nam
 
 #ifdef _WIN32
 
+#ifdef _MSC_VER
 #pragma warning(default : 4065) // reenable warning for switch case with only default case
+#endif
 
-#endif
+#endif