+/* Declaration for strcasecmp(3)? */
+#undef NEED_DECLARATION_STRCASECMP
+#ifdef NEED_DECLARATION_STRCASECMP
+#include <string.h>
+int strcasecmp(const char *s1, const char *s2);
+#endif
+
+/* Declaration for siginterrupt(3)? */
+#undef NEED_DECLARATION_SIGINTERRUPT
+#ifdef NEED_DECLARATION_SIGINTERRUPT
+#include <signal.h>
+int siginterrupt(int sig, int flag);
+#endif
+
+/* Declaration for popen(3)? */
+#undef NEED_DECLARATION_POPEN
+#ifdef NEED_DECLARATION_POPEN
+#include <stdio.h>
+FILE *popen(const char *command, const char *type);
+#endif
+
+/* Declaration for pclose(3)? */
+#undef NEED_DECLARATION_PCLOSE
+#ifdef NEED_DECLARATION_PCLOSE
+#include <stdio.h>
+int pclose(FILE *stream);
+#endif
+
+#endif /* !DONT_NEED_DECLARATIONS */
+