diff --git a/externals/cmake-modules/DetectPlatform.cmake b/externals/cmake-modules/DetectPlatform.cmake
index 6475884f1f..de1a85b793 100644
--- a/externals/cmake-modules/DetectPlatform.cmake
+++ b/externals/cmake-modules/DetectPlatform.cmake
@@ -17,6 +17,10 @@
 
 if (${CMAKE_SYSTEM_NAME} STREQUAL "SunOS")
     set(PLATFORM_SUN ON)
+elseif (${CMAKE_SYSTEM_NAME} STREQUAL "OpenOrbis")
+    set(PLATFORM_PS4 ON)
+elseif (${CMAKE_SYSTEM_NAME} STREQUAL "managarm")
+    set(PLATFORM_MANAGARM ON)
 elseif (${CMAKE_SYSTEM_NAME} STREQUAL "FreeBSD")
     set(PLATFORM_FREEBSD ON)
 elseif (${CMAKE_SYSTEM_NAME} STREQUAL "OpenBSD")
diff --git a/externals/ffmpeg/CMakeLists.txt b/externals/ffmpeg/CMakeLists.txt
index a2e5e8bf27..2d85876ad2 100644
--- a/externals/ffmpeg/CMakeLists.txt
+++ b/externals/ffmpeg/CMakeLists.txt
@@ -155,7 +155,6 @@ endif()
 
 if (PLATFORM_PS4)
     list(APPEND FFmpeg_CROSS_COMPILE_LIBS
-        -lc
         -lkernel
         -lSceUserService
         -lSceSysmodule
@@ -170,11 +169,6 @@ if (PLATFORM_PS4)
     )
 elseif (PLATFORM_MANAGARM)
     # Required for proper stuff
-    list(APPEND FFmpeg_CROSS_COMPILE_LIBS
-        -lc
-        -lm
-        -lgcc
-    )
     list(APPEND FFmpeg_CROSS_COMPILE_FLAGS 
         --disable-pthreads
         --extra-libs="${FFmpeg_CROSS_COMPILE_LIBS}"