only build static library in some feature tests

This fixes the feature detection in cases where linking the final executable would fail.
This is fine since SDL only opens these libraries using dlopen as well.

cmake/sdlchecks.cmake

@@ -1,3 +1,10 @@
+macro(check_c_source_compiles_static SOURCE VAR)
+  set(saved_CMAKE_TRY_COMPILE_TARGET_TYPE "${CMAKE_TRY_COMPILE_TARGET_TYPE}")
+  set(CMAKE_TRY_COMPILE_TARGET_TYPE "STATIC_LIBRARY")
+  check_c_source_compiles("${SOURCE}" ${VAR} ${ARGN})
+  set(CMAKE_TRY_COMPILE_TARGET_TYPE "${saved_CMAKE_TRY_COMPILE_TARGET_TYPE}")
+endmacro()
+
 macro(FindLibraryAndSONAME _LIB)
   cmake_parse_arguments(_FLAS "" "" "LIBDIRS" ${ARGN})
 
@@ -369,7 +376,7 @@ macro(CheckX11)
 
       list(APPEND CMAKE_REQUIRED_LIBRARIES ${X11_LIB})
 
-      check_c_source_compiles("
+      check_c_source_compiles_static("
           #include <X11/Xlib.h>
           int main(int argc, char **argv) {
             Display *display;
@@ -410,7 +417,7 @@ macro(CheckX11)
         set(SDL_VIDEO_DRIVER_X11_XINPUT2 1)
 
         # Check for multitouch
-        check_c_source_compiles("
+        check_c_source_compiles_static("
             #include <X11/Xlib.h>
             #include <X11/Xproto.h>
             #include <X11/extensions/XInput2.h>
@@ -427,7 +434,7 @@ macro(CheckX11)
 
       # check along with XInput2.h because we use Xfixes with XIBarrierReleasePointer
       if(SDL_X11_XFIXES AND HAVE_XFIXES_H_ AND HAVE_XINPUT2_H)
-        check_c_source_compiles("
+        check_c_source_compiles_static("
             #include <X11/Xlib.h>
             #include <X11/Xproto.h>
             #include <X11/extensions/XInput2.h>
@@ -1097,7 +1104,7 @@ macro(CheckHIDAPI)
       if(LibUSB_FOUND)
         cmake_push_check_state()
         list(APPEND CMAKE_REQUIRED_LIBRARIES LibUSB::LibUSB)
-        check_c_source_compiles("
+        check_c_source_compiles_static("
           #include <stddef.h>
           #include <libusb.h>
           int main(int argc, char **argv) {