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

--- a/configure
+++ b/configure
@@ -23808,6 +23808,7 @@
 
         #define _XOPEN_SOURCE 600
         #include <stdlib.h>
+        #include <fcntl.h>
         #if defined(__GLIBC__) && (__GLIBC__ < 2 || __GLIBC_MINOR__ < 7)
             possibly broken posix_fallocate
         #endif