AC_CHECK_LIB(gslcblas,main,,[PSPP_REQUIRED_PREREQ([libgslcblas])])
AC_CHECK_LIB(gsl, gsl_cdf_chisq_Q,,[PSPP_REQUIRED_PREREQ([libgsl (version 1.4 or later)])])
AC_CHECK_LIB(gslcblas,main,,[PSPP_REQUIRED_PREREQ([libgslcblas])])
AC_CHECK_LIB(gsl, gsl_cdf_chisq_Q,,[PSPP_REQUIRED_PREREQ([libgsl (version 1.4 or later)])])