Intubun 28483435f1 Fixed the WASM (emscripten) build, which broke starting with emscripten 6.0.2. The failure is not in magic itself but in the TCL dependency build: emscripten 6.0.2 began shipping a <sys/epoll.h> stub in its sysroot (6.0.1 did not), so TCL's configure now detects epoll on the Linux CI host via AC_CHECK_HEADERS([sys/epoll.h]), defines NOTIFIER_EPOLL, and compiles tclEpollNotfy.c. That file also requires <sys/queue.h>, which emscripten does not provide, so the build died with "fatal error: 'sys/queue.h' file not found". Fixed by passing ac_cv_header_sys_epoll_h=no to TCL's configure in toolchains/emscripten/build-tcl-wasm.sh, which forces the select()-based notifier. That notifier is the correct choice for single-threaded WASM anyway (emscripten's epoll is only a stub), and overriding the autoconf cache variable avoids patching the read-only TCL source tree and keeps the build working across future emscripten versions.

2026-07-08 09:48:10 -04:00

..

emscripten

Fixed the WASM (emscripten) build, which broke starting with emscripten 6.0.2. The failure is not in magic itself but in the TCL dependency build: emscripten 6.0.2 began shipping a <sys/epoll.h> stub in its sysroot (6.0.1 did not), so TCL's configure now detects epoll on the Linux CI host via AC_CHECK_HEADERS([sys/epoll.h]), defines NOTIFIER_EPOLL, and compiles tclEpollNotfy.c. That file also requires <sys/queue.h>, which emscripten does not provide, so the build died with "fatal error: 'sys/queue.h' file not found". Fixed by passing ac_cv_header_sys_epoll_h=no to TCL's configure in toolchains/emscripten/build-tcl-wasm.sh, which forces the select()-based notifier. That notifier is the correct choice for single-threaded WASM anyway (emscripten's epoll is only a stub), and overriding the autoconf cache variable avoids patching the read-only TCL source tree and keeps the build working across future emscripten versions.

2026-07-08 09:48:10 -04:00