build(docker): set .threads.wasm target suffix

Author: thewtex

src/docker/itk-wasm/ITKWebAssemblyInterface.cmake

@@ -46,6 +46,11 @@ function(add_executable target)
   # Suppress CLI11 Encoding_inl.hpp std::wstring_convert deprecation warning
   # Suppress glaze warning about warning: 'static_assert' with a user-generated message is a C++26 extension [-Wc++26-extensions]
   set_property(TARGET ${wasm_target} APPEND PROPERTY COMPILE_OPTIONS -msimd128 -flto -Wno-deprecated-declarations -Wno-c++26-extensions)
+  set (suffix ".wasm")
+  if("$ENV{CFLAGS}" MATCHES "thread")
+    set(suffix ".threads.wasm")
+    set_property(TARGET ${wasm_target} PROPERTY SUFFIX ${suffix})
+  endif()
   if(EMSCRIPTEN)
     set_property(TARGET ${wasm_target} APPEND PROPERTY COMPILE_OPTIONS -Wno-warn-absolute-paths -DITK_WASM_NO_FILESYSTEM_IO)
     kebab_to_camel(${target} targetCamel)
@@ -62,7 +67,7 @@ function(add_executable target)
     if (NOT ${_is_imported})
       add_custom_command(TARGET ${target}
         POST_BUILD
-        COMMAND /usr/bin/zstd -f "$<TARGET_FILE_DIR:${target}>/$<TARGET_FILE_BASE_NAME:${target}>.wasm" -o "$<TARGET_FILE_DIR:${target}>/$<TARGET_FILE_BASE_NAME:${target}>.wasm.zst"
+        COMMAND /usr/bin/zstd -f "$<TARGET_FILE_DIR:${target}>/$<TARGET_FILE_BASE_NAME:${target}>${suffix}" -o "$<TARGET_FILE_DIR:${target}>/$<TARGET_FILE_BASE_NAME:${target}>${suffix}.zst"
         )
     endif()
   else()