Building with emscripten

cmake/SfizzConfig.cmake

@@ -106,6 +106,9 @@ if(CMAKE_CXX_COMPILER_ID MATCHES "GNU|Clang")
             add_compile_options(-mfloat-abi=hard)
         endif()
     endif()
+    if(EMSCRIPTEN)
+        add_compile_options(-msimd128)
+    endif()
 elseif(CMAKE_CXX_COMPILER_ID MATCHES "MSVC")
     add_compile_options(/Zc:__cplusplus)
     set(CMAKE_MSVC_RUNTIME_LIBRARY "MultiThreaded$<$<CONFIG:Debug>:Debug>")

cmake/SfizzSIMDSourceFiles.cmake

@@ -9,7 +9,7 @@ macro(sfizz_add_simd_sources SOURCES_VAR PREFIX)
 
     # For CPU-dispatched X86 sources
     # Always build them for all X86 targets.
-    if(SFIZZ_SYSTEM_PROCESSOR MATCHES "^(x86_64|amd64|AMD64|x64|X64|i.86|x86|X86)$")
+    if(SFIZZ_SYSTEM_PROCESSOR MATCHES "^(x86_64|amd64|AMD64|x64|X64|i.86|x86|X86)$" AND NOT EMSCRIPTEN)
         # on GCC, it requires to set ISA support flags on individual files
         # to be able to use the intrinsics
         if(CMAKE_CXX_COMPILER_ID MATCHES "GNU|Clang")

external/atomic_queue/include/atomic_queue/defs.h

@@ -36,6 +36,13 @@ static inline void spin_loop_pause() noexcept {
 #endif
 }
 } // namespace atomic_queue
+#elif defined(EMSCRIPTEN)
+namespace atomic_queue {
+constexpr int CACHE_LINE_SIZE = 64;
+static inline void spin_loop_pause() noexcept {
+    // No-op
+}
+} // namespace atomic_queue
 #else
 #error "Unknown CPU architecture."
 #endif

src/sfizz/EQPool.cpp

@@ -5,7 +5,6 @@
 #include "SIMDHelpers.h"
 #include "utility/SwapAndPop.h"
 #include <absl/algorithm/container.h>
-#include <thread>
 
 sfz::EQHolder::EQHolder(Resources& resources)
 : resources(resources)