remove-signals.diff

diff --git a/pigz.c b/pigz.c
index 01e50e0..814af77 100644
--- a/pigz.c
+++ b/pigz.c
@@ -358,7 +358,9 @@
 #include <errno.h>      // errno, EEXIST
 #include <assert.h>     // assert()
 #include <time.h>       // ctime(), time(), time_t, mktime()
+#ifdef ALLOW_WASM_SIGNALS
 #include <signal.h>     // signal(), SIGINT
+#endif
 #include <sys/types.h>  // ssize_t
 #include <sys/stat.h>   // chmod(), stat(), fstat(), lstat(), struct stat,
                         // S_IFDIR, S_IFLNK, S_IFMT, S_IFREG
@@ -923,9 +925,11 @@ local void log_dump(void) {

 // Abort or catch termination signal.
 local void cut_short(int sig) {
+#ifdef ALLOW_WASM_SIGNALS
     if (sig == SIGINT) {
         Trace(("termination by user"));
     }
+#endif
     if (g.outd != -1 && g.outd != 1) {
         unlink(g.outf);
         RELEASE(g.outf);
@@ -4621,7 +4625,9 @@ int main(int argc, char **argv) {
         g.prog = *p ? p : "pigz";

         // prepare for interrupts and logging
+#ifdef ALLOW_WASM_SIGNALS
         signal(SIGINT, cut_short);
+#endif
 #ifndef NOTHREAD
         yarn_prefix = g.prog;           // prefix for yarn error messages
         yarn_abort = cut_yarn;          // call on thread error