AC_PROG_AWK
AC_MSG_CHECKING(for preprocessor defaults)
- psi_cpp_predef=`$CPP -Wp,-dM $CPPFLAGS -D_GNU_SOURCE -D_FILE_OFFSET_BITS=64 - </dev/null`
+ psi_cpp_predef=`$CPP -Wp,-dM $CPPFLAGS -D_GNU_SOURCE -D_FILE_OFFSET_BITS=64 -U__BLOCKS__ - </dev/null`
psi_cpp_search=`$CPP -Wp,-v $CPPFLAGS -D_GNU_SOURCE -D_FILE_OFFSET_BITS=64 - </dev/null 2>&1 >/dev/null \
| $AWK '
/include.*search.*start/ {