- Separated Platform and Compiler Dependent Behaviour into CMake scripts

- Implemented Basic Platform Interfaces
 - Implemented partial Linux platform and Wayland Display.
 - Implemented Dependencies for the above
   - map
     - set
       - optional
     - pair

TODO: threading

source/platform/interface/platform.cpp

@@ -0,0 +1,34 @@
+// =====================================================================================================================
+//  fennec, a free and open source game engine
+//  Copyright © 2025  Medusa Slockbower
+//
+//  This program is free software: you can redistribute it and/or modify
+//  it under the terms of the GNU General Public License as published by
+//  the Free Software Foundation, either version 3 of the License, or
+//  (at your option) any later version.
+//
+//  This program is distributed in the hope that it will be useful,
+//  but WITHOUT ANY WARRANTY; without even the implied warranty of
+//  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+//  GNU General Public License for more details.
+//
+//  You should have received a copy of the GNU General Public License
+//  along with this program.  If not, see <https://www.gnu.org/licenses/>.
+// =====================================================================================================================
+
+#include <cstdlib>
+#include <fennec/platform/interface/platform.h>
+
+namespace fennec
+{
+
+string platform::get_environment_variable(const cstring& var) {
+	const char* val = getenv(var);
+	return string(val, strlen(val));
+}
+
+platform::platform(user t) {
+	_config.type = t;
+}
+
+}

source/platform/interface/window.cpp

@@ -0,0 +1,36 @@
+// =====================================================================================================================
+//  fennec, a free and open source game engine
+//  Copyright © 2025  Medusa Slockbower
+//
+//  This program is free software: you can redistribute it and/or modify
+//  it under the terms of the GNU General Public License as published by
+//  the Free Software Foundation, either version 3 of the License, or
+//  (at your option) any later version.
+//
+//  This program is distributed in the hope that it will be useful,
+//  but WITHOUT ANY WARRANTY; without even the implied warranty of
+//  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+//  GNU General Public License for more details.
+//
+//  You should have received a copy of the GNU General Public License
+//  along with this program.  If not, see <https://www.gnu.org/licenses/>.
+// =====================================================================================================================
+
+#include <fennec/platform/interface/window.h>
+
+namespace fennec
+{
+
+window::window(display* display, window* parent, bool modal)
+	: _display(display)
+	, _parent(parent)
+	, _config() {
+
+	bool child = parent != nullptr;
+	assert(!modal || child, "Attempted to create non-child modal window.");
+	_config.flags |= child ? flags_child : flags_none;
+	_config.flags |= modal ? flags_modal : flags_none;
+}
+
+}
+

source/platform/linux/platform.cpp

@@ -0,0 +1,98 @@
+// =====================================================================================================================
+//  fennec, a free and open source game engine
+//  Copyright © 2025  Medusa Slockbower
+//
+//  This program is free software: you can redistribute it and/or modify
+//  it under the terms of the GNU General Public License as published by
+//  the Free Software Foundation, either version 3 of the License, or
+//  (at your option) any later version.
+//
+//  This program is distributed in the hope that it will be useful,
+//  but WITHOUT ANY WARRANTY; without even the implied warranty of
+//  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+//  GNU General Public License for more details.
+//
+//  You should have received a copy of the GNU General Public License
+//  along with this program.  If not, see <https://www.gnu.org/licenses/>.
+// =====================================================================================================================
+
+#include <fennec/platform/linux/platform.h>
+
+#include <dlfcn.h>
+
+#ifdef FENNEC_LIB_WAYLAND
+#include <fennec/platform/linux/wayland/lib/dyn.h>
+#include <fennec/platform/linux/wayland/display.h>
+#endif
+
+namespace fennec
+{
+
+using namespace wayland;
+
+linux_platform::linux_platform(user _type)
+	: platform(_type)
+	, _display_driver(display_none) {
+	switch (_type) {
+		case user::client: {
+			_runtime_client_checks();
+			return;
+		}
+		case user::server: {
+			_runtime_server_checks();
+		}
+	}
+}
+
+linux_platform::~linux_platform() {
+
+}
+
+shared_object* linux_platform::load_object(const cstring& file) {
+	void* handle = dlopen(file, RTLD_NOW | RTLD_LOCAL);
+	const char* load_error = dlerror();
+	assert(handle != nullptr, load_error);
+	return static_cast<shared_object*>(handle);
+}
+
+void linux_platform::unload_object(shared_object* obj) {
+	if (obj) {
+		dlclose(obj);
+	}
+}
+
+platform::function_pointer linux_platform::find_symbol(shared_object* hndl, const cstring& name) {
+	string _name = name;
+	void* symbol = dlsym(hndl, _name);
+	if (symbol == nullptr) {
+		_name = '_' + _name;
+		symbol = dlsym(hndl, _name);
+	}
+	return (function_pointer)symbol;
+}
+
+display* linux_platform::get_display() {
+	return _display;
+}
+
+void linux_platform::_runtime_client_checks() {
+#ifdef FENNEC_LIB_WAYLAND
+	if (wayland::load_symbols(this)) {
+		_display_driver = display_wayland;
+		_display = new wayland_display(this);
+		wayland::unload_symbols(this); // Doesn't actually unload symbols, just resets ref counter to only consider
+		                               // the created display
+	}
+#endif
+	assertf(_display != nullptr, "failed to find suitable display driver");
+}
+
+void linux_platform::_find_display_driver() {
+
+}
+
+void linux_platform::_runtime_server_checks() {
+
+}
+
+}

source/platform/linux/wayland/display.cpp

@@ -0,0 +1,58 @@
+// =====================================================================================================================
+//  fennec, a free and open source game engine
+//  Copyright © 2025  Medusa Slockbower
+//
+//  This program is free software: you can redistribute it and/or modify
+//  it under the terms of the GNU General Public License as published by
+//  the Free Software Foundation, either version 3 of the License, or
+//  (at your option) any later version.
+//
+//  This program is distributed in the hope that it will be useful,
+//  but WITHOUT ANY WARRANTY; without even the implied warranty of
+//  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+//  GNU General Public License for more details.
+//
+//  You should have received a copy of the GNU General Public License
+//  along with this program.  If not, see <https://www.gnu.org/licenses/>.
+// =====================================================================================================================
+
+#include <fennec/platform/linux/wayland/display.h>
+#include <fennec/platform/linux/wayland/lib/sym_def.h>
+#include <fennec/platform/linux/wayland/lib/dyn.h>
+
+namespace fennec
+{
+
+namespace wayland
+{
+
+wayland_display::wayland_display(linux_platform* platform)
+	: display()
+	, _handle()
+	, _platform(platform) {
+	load_symbols(_platform);
+	_handle = wl_display_connect(nullptr);
+}
+
+wayland_display::wayland_display(linux_platform* platform, const cstring& drv)
+	: display()
+	, _handle()
+	, _platform(platform) {
+	load_symbols(_platform);
+	_handle = wl_display_connect(nullptr);
+}
+
+wayland_display::~wayland_display() {
+	wl_display_disconnect(_handle);
+	unload_symbols(_platform);
+	_handle = nullptr;
+	_platform = nullptr;
+}
+
+bool wayland_display::connected() const {
+	return _handle != nullptr;
+}
+
+}
+
+}

source/platform/linux/wayland/lib/dyn.cpp

@@ -0,0 +1,69 @@
+// =====================================================================================================================
+//  fennec, a free and open source game engine
+//  Copyright © 2025  Medusa Slockbower
+//
+//  This program is free software: you can redistribute it and/or modify
+//  it under the terms of the GNU General Public License as published by
+//  the Free Software Foundation, either version 3 of the License, or
+//  (at your option) any later version.
+//
+//  This program is distributed in the hope that it will be useful,
+//  but WITHOUT ANY WARRANTY; without even the implied warranty of
+//  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+//  GNU General Public License for more details.
+//
+//  You should have received a copy of the GNU General Public License
+//  along with this program.  If not, see <https://www.gnu.org/licenses/>.
+// =====================================================================================================================
+
+#include <fennec/platform/linux/wayland/lib/sym_def.h>
+#include <fennec/platform/linux/wayland/lib/dyn.h>
+
+namespace fennec
+{
+
+namespace wayland
+{
+
+using shared_lib = platform::shared_lib;
+
+static int _load_count = 0;
+
+// Create private variables
+#define FENNEC_LIB(lib) static shared_lib _FENNEC_LIB_##lib = { nullptr, FENNEC_LIB_##lib };
+#define FENNEC_SYMBOL(...)
+#include <fennec/platform/linux/wayland/lib/sym.h>
+
+bool load_symbols(linux_platform* platform) {
+	if (_load_count++ != 0) {
+		return true;
+	}
+
+#define FENNEC_LIB(lib) _FENNEC_LIB_##lib._lib = platform->load_object(_FENNEC_LIB_##lib._name); \
+	                    FENNEC_HAS_LIB_##lib = _FENNEC_LIB_##lib._lib != nullptr; \
+	                    if(not FENNEC_HAS_LIB_##lib) { \
+							unload_symbols(platform); \
+							return false; \
+						} \
+	                    shared_lib& current_lib = _FENNEC_LIB_##lib;
+#define FENNEC_SYMBOL(ret, fn, ...) fn = (sym_##fn)(platform->find_symbol(current_lib._lib, #fn));
+#include <fennec/platform/linux/wayland/lib/sym.h>
+
+	return true;
+}
+
+void unload_symbols(linux_platform* platform) {
+	if (--_load_count != 0) {
+		return;
+	}
+
+#define FENNEC_LIB(lib) platform->unload_object(_FENNEC_LIB_##lib._lib); \
+	                    _FENNEC_LIB_##lib._lib = nullptr;
+#define FENNEC_SYMBOL(ret, fn, ...) fn = nullptr;
+#include <fennec/platform/linux/wayland/lib/sym.h>
+}
+
+
+}
+
+}