-- execl("/bin/sh", "sh", "-c", str, (char *)NULL); /* async-signal-safe */
-+ execl("/system/bin/sh", "sh", "-c", str, (char *)NULL); /* async-signal-safe */
+- execl("/bin/sh", "sh", "-c", str, (char *)NULL); /* async-signal-safe (since SUSv4) */
++ execl("@TERMUX_PREFIX@/bin/sh", "sh", "-c", str, (char *)NULL); /* async-signal-safe (since SUSv4) */