AC_FUNC_ALLOCA
AC_FUNC_MMAP
AC_FUNC_FSEEKO
-AC_CHECK_FUNCS(strptime snprintf vsnprintf)
+AC_CHECK_FUNCS(strptime timegm snprintf vsnprintf)
AC_CHECK_FUNCS(usleep ftello sigblock sigsetjmp symlink)
dnl We expect to have these functions on Unix-like systems configure