Phillip Helbig---remove CLOTHES to reply
wrote:
> In article <1inifpp.1j92xdij344rcN%%nospam@see.signature>,
> nospam@see.signature (Richard Maine) writes:
>
>> Phillip Helbig---remove CLOTHES to reply
>> wrote:
>>
>>> Shouldn't porting (the compiler) it be trivial? That is, just compile and
>>> go? Or is not everything implemented in the source code of the compiler,
>>> but instead makes use of system calls etc?
>>
>> Um. Compile with what? Yes, after you have a compiler, you can use it to
>> compile the compiler. Boostrapping cam be decidedly non-trivial. THat's
>> the whole point, which it looks like you missed.
>
> I was thinking a) it is written in C and b) I have a normal C compiler.
Sometimes. Not always. Apparently you overlooked the
>>>> as far as I know, the
>>>> available version of the gnu C compiler is too old
Which was in the para that you replied to with the comment that porting
should be trivial.
> Apropos.... Isn't the possibility of cross-compilation the reason some
> things are not allowed by the Fortran standard, while there is no
> "obvious" reason they should be disallowed?
Yes, that reason has been cited in the past. However, it doesn't seem to
be considered much of a problem any more, so some of those restrictions
have been lifted. Cross compilation is still needed on occasion, but
cross compilers today generally have more capability. For example, there
was concern in the past about cross compilers having to do things like
implement all the intrinsics twice - once for the target environment and
once for the compilation environment. That concern contributed towards
keeping the list of intrinsics allowed in initialization expressions
down. Today, I think the assumption is that if such duplication is
needed, it can be done. Resources in the compilation environment are not
likely to be as shot as they previously might have been. In fact,
compilation environments for cross compilers are typically fairly "rich"
environments and often include things such as software emulators for the
target.
--
Richard Maine | Good judgement comes from experience;
email: last name at domain . net | experience comes from bad judgement.
domain: summertriangle | -- Mark Twain
