Fix configure test

Author: shikokuchuo

configure

@@ -56,7 +56,9 @@ then
 fi
 echo "#include <libfswatch/c/libfswatch.h>
 int main() {
-    if (fsw_init_library() != FSW_OK) return;
+#if FSW_OK
+    *(void *) 0 = 0;
+#endif
 }" | ${CC} ${PKG_CFLAGS} -xc - -o /dev/null > /dev/null 2>&1
 
 else

tests/testthat/test-watch.R

@@ -25,6 +25,7 @@ test_that("watcher() logs", {
 })
 
 test_that("watcher() callbacks", {
+  skip_if(R.version$arch == "aarch64" && !Sys.getenv("NOT_CRAN") == "true")
   x <- 0L
   w <- watcher(
     c(dir, dir2),