AC_CHECK_LIB(m, cosf, [AC_DEFINE([HAVE_COSF],[1],[Define to 1 if your system has `cosf'.])])
AC_CHECK_LIB(m, trunc, [AC_DEFINE([HAVE_TRUNC],[1],[Define to 1 if your system has `trunc'.])])
AC_CHECK_LIB(m, exp10, [AC_DEFINE([HAVE_EXP10],[1],[Define to 1 if your system has 'exp10'.])])
+AC_CHECK_LIB(m, log2, [AC_DEFINE([HAVE_LOG2],[1],[Define to 1 if your system has 'log2'.])])
#AC_FUNC_MKTIME
AH_BOTTOM([
GRC_GNURADIO_CORE
GRC_USRP
GRC_GR_USRP dnl this must come after GRC_USRP
+GRC_GR_GCELL dnl this must come after GRC_GCELL and GRC_GNURADIO_CORE
GRC_GR_MSDD6000
GRC_GR_AUDIO_ALSA
GRC_GR_AUDIO_JACK