diff --git a/config/BlankForm b/config/BlankForm
index 55a3b49a35..e297cc385b 100644
--- a/config/BlankForm
+++ b/config/BlankForm
@@ -115,21 +115,3 @@ case $CC_BASENAME in
         PROFILE_CPPFLAGS=
         ;;
 esac
-
-
-
-# Overriding Configure Tests
-# --------------------------
-#
-# Values for overriding configuration tests when cross compiling.
-# This includes compiling on some machines where the serial front end
-# compiles for a parallel back end.
-
-# Set this to `yes' or `no' depending on whether the target is big
-# endian or little endian.
-#ac_cv_c_bigendian=${ac_cv_c_bigendian='yes'}
-
-# Set this to the width required by printf() to print type `long
-# long'.  For instance, if the format would be `%lld' then set it to
-# `ll' or if the format would be `%qd' set it to `q'.
-#hdf5_cv_printf_ll=${hdf5_cv_printf_ll='ll'}
diff --git a/config/ibm-aix b/config/ibm-aix
index b2f5d05b79..bd486af8e2 100644
--- a/config/ibm-aix
+++ b/config/ibm-aix
@@ -130,49 +130,3 @@ case $CC_BASENAME in
     cc_flags_set=yes
     ;;
 esac
-
-#----------------------------------------------------------------------------
-# Values for overriding configuration tests when cross compiling.
-# This includes compiling on some machines where the serial front end
-# compiles for a parallel back end.
-
-# Set this to `yes' or `no' depending on whether the target is big
-# endian or little endian.
-hdf5_cv_printf_ll=${hdf5_cv_printf_ll='ll'}
-ac_cv_c_bigendian=${ac_cv_c_bigendian='yes'}
-ac_cv_header_stdc=${ac_cv_header_stdc='yes'}
-ac_cv_header_sys_ioctl_h=${ac_cv_header_sys_ioctl_h=yes}
-
-# cache the sizeof of "standard C types" so that configure can run faster.
-ac_cv_sizeof_char=${ac_cv_sizeof_char=1}
-ac_cv_sizeof_short=${ac_cv_sizeof_short=2}
-ac_cv_sizeof_int=${ac_cv_sizeof_int=4}
-ac_cv_sizeof_long_long=${ac_cv_sizeof_long_long=8}
-ac_cv_sizeof_float=${ac_cv_sizeof_float=4}
-ac_cv_sizeof_double=${ac_cv_sizeof_double=8}
-ac_cv_sizeof_long_double=${ac_cv_sizeof_long_double=8}
-ac_cv_sizeof_int8_t=${ac_cv_sizeof_int8_t=1}
-ac_cv_sizeof_uint8_t=${ac_cv_sizeof_uint8_t=1}
-ac_cv_sizeof_int_least8_t=${ac_cv_sizeof_int_least8_t=1}
-ac_cv_sizeof_uint_least8_t=${ac_cv_sizeof_uint_least8_t=1}
-# Do not cache int_fast8_t since the vendor changes often.
-ac_cv_sizeof_int16_t=${ac_cv_sizeof_int16_t=2}
-ac_cv_sizeof_uint16_t=${ac_cv_sizeof_uint16_t=2}
-ac_cv_sizeof_int_least16_t=${ac_cv_sizeof_int_least16_t=2}
-ac_cv_sizeof_uint_least16_t=${ac_cv_sizeof_uint_least16_t=2}
-# Do not cache int_fast16_t since the vendor changes often.
-ac_cv_sizeof_int32_t=${ac_cv_sizeof_int32_t=4}
-ac_cv_sizeof_uint32_t=${ac_cv_sizeof_uint32_t=4}
-ac_cv_sizeof_int_least32_t=${ac_cv_sizeof_int_least32_t=4}
-ac_cv_sizeof_uint_least32_t=${ac_cv_sizeof_uint_least32_t=4}
-ac_cv_sizeof_int_fast32_t=${ac_cv_sizeof_int_fast32_t=4}
-ac_cv_sizeof_uint_fast32_t=${ac_cv_sizeof_uint_fast32_t=4}
-ac_cv_sizeof_int64_t=${ac_cv_sizeof_int64_t=8}
-ac_cv_sizeof_uint64_t=${ac_cv_sizeof_uint64_t=8}
-ac_cv_sizeof_int_least64_t=${ac_cv_sizeof_int_least64_t=8}
-ac_cv_sizeof_uint_least64_t=${ac_cv_sizeof_uint_least64_t=8}
-ac_cv_sizeof_int_fast64_t=${ac_cv_sizeof_int_fast64_t=8}
-ac_cv_sizeof_uint_fast64_t=${ac_cv_sizeof_uint_fast64_t=8}
-
-# Don't cache long since it varies between 32 and 64 bits
-#ac_cv_sizeof_long=${ac_cv_sizeof_long=4}