build: Update to support multi-arch builds.

src/tests/CMakeLists.txt

@@ -12,15 +12,9 @@ add_executable(tests
     precompiled_headers.h
     audio_core/audio_fixures.h
     audio_core/decoder_tests.cpp
+    video_core/shader/shader_jit_x64_compiler.cpp
 )
 
-if (ARCHITECTURE_x86_64)
-    target_sources(tests
-        PRIVATE
-            video_core/shader/shader_jit_x64_compiler.cpp
-    )
-endif()
-
 create_target_directory_groups(tests)
 
 target_link_libraries(tests PRIVATE common core video_core audio_core)

src/tests/video_core/shader/shader_jit_x64_compiler.cpp

@@ -2,6 +2,9 @@
 // Licensed under GPLv2 or any later version
 // Refer to the license.txt file included.
 
+#include "common/arch.h"
+#if CITRA_ARCH(x86_64)
+
 #include <algorithm>
 #include <cmath>
 #include <memory>
@@ -158,3 +161,5 @@ TEST_CASE("Nested Loop", "[video_core][shader][shader_jit]") {
         REQUIRE(shader_unit_jit.registers.output[0].x.ToFloat32() == Catch::Approx(expected_out));
     }
 }
+
+#endif // CITRA_ARCH(x86_64)