dnl Checks for programs.
AC_PROG_CXX
-dnl AC_PROG_CC
+AC_PROG_CXXCPP
+AC_PROG_CC
dnl Checks for libraries.
AC_CHECK_LIB(crypt, crypt)
AC_TYPE_SIZE_T
dnl Checks for library functions.
-AC_CHECK_FUNCS(socket strcspn strspn strtol strtok)
+AC_CHECK_FUNCS(socket strcspn strspn strtol strtok gethostbyname)
AC_OUTPUT(Makefile)
+