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mythread.h: Disable signal functions in builds targeting Wasm + WASI.
signal.h in WASI SDK doesn't currently provide sigprocmask() or sigset_t. liblzma doesn't need them so this change makes liblzma and xzdec build against WASI SDK. xz doesn't build yet and the tests don't either as tuktest needs setjmp() which isn't (yet?) implemented in WASI SDK. Closes: https://github.com/tukaani-project/xz/pull/57 See also: https://github.com/tukaani-project/xz/pull/56 (The original commit was edited a little by Lasse Collin.)
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@ -79,7 +79,7 @@ do { \
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} while (0)
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#if !(defined(_WIN32) && !defined(__CYGWIN__))
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#if !(defined(_WIN32) && !defined(__CYGWIN__)) && !defined(__wasm__)
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// Use sigprocmask() to set the signal mask in single-threaded programs.
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#include <signal.h>
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