-dnl Checks for header files.
-AC_CHECK_HEADERS([limits.h memory.h sys/stat.h sys/time.h sys/types.h \
- fpu_control.h sys/mman.h sys/wait.h ieeefp.h fenv.h \
- valgrind/valgrind.h])
-AC_HEADER_STAT
-AC_HEADER_STDC
-AC_HEADER_TIME
-
-AC_C_CONST
-AC_C_INLINE
-AC_TYPE_OFF_T
-AC_TYPE_SIZE_T
-AC_STRUCT_TM
-
-AC_CHECK_SIZEOF(short, 2)
-AC_CHECK_SIZEOF(int, 4)
-AC_CHECK_SIZEOF(long, 4)
-AC_CHECK_SIZEOF(long long, 0)
-AC_CHECK_SIZEOF(float, 0)
-AC_CHECK_SIZEOF(double, 8)
-AC_CHECK_SIZEOF(long double, 0)
-
-AC_DEFINE(FPREP_IEEE754, 1,
- [Define for machines that have IEEE 754 floating point arithmetic,
- the most common format today.])
+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)])])