Darryl L. Miles c21f4a96db wasm: force TCL select() notifier (Emscripten has no working epoll) ... TCL 9.1's configure defines NOTIFIER_EPOLL whenever <sys/epoll.h> is present (unix/configure.ac:342). Emscripten's sysroot ships that header and the epoll_* symbols, so TCL picked the epoll notifier — but epoll does not work under WASM at runtime and the event loop hangs. Hide the header/functions from TCL's configure via autoconf cache vars (ac_cv_header_sys_epoll_h=no + epoll_create/epoll_create1=no) so the select()-based notifier is selected instead. Verified with emsdk 6.0.3: NOTIFIER_EPOLL is absent from DEFS, the tclEpollNotfy.o/tclKqueueNotfy.o objects are empty stubs (333 B) and tclSelectNotfy.o is the live notifier (~9.9 KB); the tcl WASM variant links (magic.js + magic.wasm) via npm/build.sh out-of-source. Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>		2026-07-26 14:54:11 -04:00
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emscripten	wasm: force TCL select() notifier (Emscripten has no working epoll)	2026-07-26 14:54:11 -04:00