I use following code in default.vcl
C{#include <time.h>}C
an error occurred at the start.
Message from C-compiler:
./vcl.TfBe17Rg.c:429:21: time.h: No such file or directory
./vcl.TfBe17Rg.c:430:23: string.h: No such file or directory
Running C-compiler failed, exit 1