AC_PROG_CC
AC_PROG_CXX
AC_CONFIG_MACRO_DIR([m4])
#AC_CONFIG_MACRO_DIR([m4])
AC_LIBTOOL_DLOPEN
AC_PROG_LIBTOOL
AM_PROG_CC_STDC
#AM_PROG_CC_STDC
AM_PROG_CC_C_O
AC_HEADER_STDC
AC_C_BIGENDIAN