cpython/Tools/wasm/config.site-wasm32-emscripten

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# config.site override for cross compiling to wasm32-emscripten platform
#
# CONFIG_SITE=Tools/wasm/config.site-wasm32-emscripten \
# emconfigure ./configure --host=wasm32-unknown-emscripten --build=...
#
# Written by Christian Heimes <christian@python.org>
# Partly based on pyodide's pyconfig.undefs.h file.
#
# cannot be detected in cross builds
ac_cv_buggy_getaddrinfo=no
# Emscripten has no /dev/pt*
ac_cv_file__dev_ptmx=no
ac_cv_file__dev_ptc=no
# dummy readelf, Emscripten build does not need readelf.
ac_cv_prog_ac_ct_READELF=true
# new undefined symbols / unsupported features
ac_cv_func_posix_spawn=no
ac_cv_func_posix_spawnp=no
ac_cv_func_eventfd=no
ac_cv_func_memfd_create=no
ac_cv_func_prlimit=no
# unsupported syscall, https://github.com/emscripten-core/emscripten/issues/13393
ac_cv_func_shutdown=no
# breaks build, see https://github.com/ethanhs/python-wasm/issues/16
ac_cv_lib_bz2_BZ2_bzCompress=no
# The rest is based on pyodide
# https://github.com/pyodide/pyodide/blob/main/cpython/pyconfig.undefs.h
ac_cv_func_epoll=no
ac_cv_func_epoll_create1=no
ac_cv_header_linux_vm_sockets_h=no
ac_cv_func_socketpair=no
ac_cv_func_utimensat=no
ac_cv_func_sigaction=no
# Untested syscalls in emscripten
ac_cv_func_openat=no
ac_cv_func_mkdirat=no
ac_cv_func_fchownat=no
ac_cv_func_renameat=no
ac_cv_func_linkat=no
ac_cv_func_symlinkat=no
ac_cv_func_readlinkat=no
ac_cv_func_fchmodat=no
ac_cv_func_dup3=no
# Syscalls not implemented in emscripten
ac_cv_func_preadv2=no
ac_cv_func_preadv=no
ac_cv_func_pwritev2=no
ac_cv_func_pwritev=no
ac_cv_func_pipe2=no
ac_cv_func_nice=no
# Syscalls that resulted in a segfault
ac_cv_func_utimensat=no
ac_cv_header_sys_ioctl_h=no
# sockets are supported, but only in non-blocking mode
# ac_cv_header_sys_socket_h=no
# Unsupported functionality
#undef HAVE_PTHREAD_H