[cmake] Simplify DetectPlatform and normalize platform names (#4183)

Since 3.25 introduced `LINUX` and `BSD`, use them, and standardize other platforms to that style

Signed-off-by: crueter <crueter@eden-emu.dev>
Reviewed-on: https://git.eden-emu.dev/eden-emu/eden/pulls/4183
Reviewed-by: Samuel <lizzie@eden-emu.dev>
Reviewed-by: CamilleLaVey <camillelavey99@gmail.com>

src/CMakeLists.txt

@@ -193,7 +193,7 @@ else()
 
     if (ARCHITECTURE_x86_64)
         add_compile_options($<$<COMPILE_LANGUAGE:C,CXX>:-mcx16>)
-        if (PLATFORM_LINUX OR PLATFORM_FREEBSD)
+        if (LINUX OR FREEBSD)
             add_compile_options($<$<COMPILE_LANGUAGE:C,CXX>:-mtls-dialect=gnu2>)
         endif()
     endif()

src/core/CMakeLists.txt

@@ -1173,7 +1173,7 @@ add_library(core STATIC
 
 if (ENABLE_WIFI_SCAN)
     target_sources(core PRIVATE internal_network/wifi_scanner.cpp)
-    if (PLATFORM_LINUX)
+    if (LINUX)
         target_link_libraries(core PRIVATE iw)
     endif()
 else()

src/dynarmic/CMakeLists.txt

@@ -25,7 +25,7 @@ endif()
 # Dynarmic project options
 option(DYNARMIC_ENABLE_CPU_FEATURE_DETECTION "Turning this off causes dynarmic to assume the host CPU doesn't support anything later than SSE3" ON)
 
-if (PLATFORM_OPENBSD OR PLATFORM_DRAGONFLY OR PLATFORM_NETBSD)
+if (OPENBSD OR DRAGONFLY OR NETBSD)
     set(REQUIRE_WX ON)
 else()
     set(REQUIRE_WX OFF)

src/dynarmic/src/dynarmic/CMakeLists.txt

@@ -363,7 +363,7 @@ elseif (APPLE)
             backend/exception_handler_macos_mig.c
         )
     endif()
-elseif (UNIX AND NOT PLATFORM_HAIKU)
+elseif (UNIX AND NOT HAIKUOS)
     # Haiku lacks <ucontext.h>
     if (CMAKE_SYSTEM_NAME STREQUAL "Linux")
         target_link_libraries(dynarmic PRIVATE rt)

src/network/CMakeLists.txt

@@ -1,4 +1,4 @@
-# SPDX-FileCopyrightText: Copyright 2025 Eden Emulator Project
+# SPDX-FileCopyrightText: Copyright 2026 Eden Emulator Project
 # SPDX-License-Identifier: GPL-3.0-or-later
 
 # SPDX-FileCopyrightText: 2022 yuzu Emulator Project
@@ -28,6 +28,6 @@ if (ENABLE_WEB_SERVICE)
 endif()
 
 # Solaris uses /lib/amd64/libsocket.so and /lib/amd64/libnsl.so
-if (PLATFORM_SUN)
+if (SOLARIS)
     target_link_libraries(network PRIVATE socket nsl)
 endif()

src/video_core/host_shaders/CMakeLists.txt

@@ -88,7 +88,7 @@ set(SHADER_FILES
     ${CMAKE_CURRENT_SOURCE_DIR}/sgsr1_shader_mobile_edge_direction.frag
 )
 
-if (PLATFORM_HAIKU)
+if (HAIKUOS)
     # glslangValidator WILL crash, glslang will not
     set(GLSLANGVALIDATOR "glslang")
 else()

src/yuzu/CMakeLists.txt

@@ -8,7 +8,7 @@ set(CMAKE_INCLUDE_CURRENT_DIR ON)
 
 # Set the RPATH for Qt Libraries
 # This must be done before the `yuzu` target is created
-if (YUZU_USE_BUNDLED_QT AND PLATFORM_LINUX)
+if (YUZU_USE_BUNDLED_QT AND LINUX)
     set(CMAKE_BUILD_RPATH "${CMAKE_BINARY_DIR}/bin/lib/")
 endif()