./Tools/wasm/wasm_build.py wasi

...
<snipped output>

ccache /opt/wasi-sdk/bin/clang  -Wsign-compare -Wunreachable-code -DNDEBUG -g -fwrapv -O3 -Wall    -std=c11 -Wextra -Wno-unused-parameter -Wno-missing-field-initializers -Werror=implicit-function-declaration -fvisibility=hidden  -I../../Include/internal -IObjects -IInclude -IPython -I. -I../../Include    -DPy_BUILD_CORE_BUILTIN -c ../../Modules/_weakref.c -o Modules/_weakref.o
../../Modules/timemodule.c:1972:13: error: incompatible pointer to integer conversion passing 'const struct __clockid *' to parameter of type 'long' [-Wint-conversion]
        if (PyModule_AddIntMacro(module, CLOCK_REALTIME) < 0) {
            ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
../../Include/modsupport.h:59:69: note: expanded from macro 'PyModule_AddIntMacro'
#define PyModule_AddIntMacro(m, c) PyModule_AddIntConstant((m), #c, (c))
                                                                    ^~~
../../Include/modsupport.h:51:71: note: passing argument to parameter here
PyAPI_FUNC(int) PyModule_AddIntConstant(PyObject *, const char *, long);
                                                                      ^
../../Modules/timemodule.c:1979:13: error: incompatible pointer to integer conversion passing 'const struct __clockid *' to parameter of type 'long' [-Wint-conversion]
        if (PyModule_AddIntMacro(module, CLOCK_MONOTONIC) < 0) {
            ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
../../Include/modsupport.h:59:69: note: expanded from macro 'PyModule_AddIntMacro'
#define PyModule_AddIntMacro(m, c) PyModule_AddIntConstant((m), #c, (c))
                                                                    ^~~
../../Include/modsupport.h:51:71: note: passing argument to parameter here
PyAPI_FUNC(int) PyModule_AddIntConstant(PyObject *, const char *, long);
                                                                      ^
2 errors generated.
make: *** [Makefile:2872: Modules/timemodule.o] Error 1
make: *** Waiting for unfinished jobs....