https://github.com/termux/termux-packages/issues/15852

--- a/lib/strerror_r.c
+++ b/lib/strerror_r.c
@@ -23,6 +23,9 @@
 #define _NETBSD_SOURCE 1
 
 /* Specification.  */
+#ifdef __ANDROID__
+#undef _GNU_SOURCE
+#endif
 #include <string.h>
 
 #include <errno.h>