`popen()` is not available on emscripten

1 files changed, 1 insertions, 1 deletions

diff --git a/process.c b/process.c
index 22fa8bd15c..d9853e5a95 100644
--- a/process.c
+++ b/process.c
@@ -4536,7 +4536,7 @@ rb_syswait(rb_pid_t pid)
     rb_waitpid(pid, &status, 0);
 }
 
-#if !defined HAVE_WORKING_FORK && !defined HAVE_SPAWNV
+#if !defined HAVE_WORKING_FORK && !defined HAVE_SPAWNV && !defined __EMSCRIPTEN__
 char *
 rb_execarg_commandline(const struct rb_execarg *eargp, VALUE *prog)
 {