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Re: gcc: building gcc-4.5.0 for Cygwin
Dave Korn <firstname.lastname@example.org> writes:
> On 17/04/2010 21:32, Paul Bibbings wrote:
>> The .dlls in question are:
>> 21:10:29 Paul Bibbings@JIJOU
>> ~ $ls -l /opt/gcc-4.5.0/bin | grep dll
>> -rwxr-xr-x 1 ... 437743 Apr 15 09:08 cyggcc_s-1.dll
>> -rwxr-xr-x 1 ... 271146 Apr 15 09:08 cyggomp-1.dll
>> -rwxr-xr-x 1 ... 55679 Apr 15 09:08 cygssp-0.dll
>> -rwxr-xr-x 1 ... 5829289 Apr 15 09:07 cygstdc++-6.dll
>> Maybe I am missing something in having these in the first place. I
>> didn't get any new .dlls for gcc-4.4.1, for instance:
> That'd be my fault. GCC never used to build DLLs for anything, except
> libgcc, prior to 4.5. Now it does, for all languages. (At last, the simplest
> possible "hello world" in java isn't 45 megabytes any more.) They install
> into $bindir, because that's where they need to be to be found easily;
> alongside the executables that require them.
> Like a lot of libraries, they occasionally sprout new interfaces, but they
> should always remain backwardly-compatible. Applications compiled with older
> GCC against older versions of the DLL ought to run just fine with the newer
> ones (it's a bug if they don't), but of course applications compiled with the
> newer compilers that actually make use of the new features in the newer
> versions of the DLLs won't be able to work with older ones.
> From the end-user's point of view, the simple solution would be to not worry
> about switching them round or alternatives or any of that, but just make sure
> the newest ones are at the front of your $PATH at all times, you could even
> feel free to install them straight into /usr/bin and just overwrite the
> existing versions; everything should still work.
This last is good to know, and would essentially solve the issue for
me. I shall give it a try and report back only if I encounter problems.
Thanks for the clarification.
(BTW. I'm guessing by "That'd be my fault" that you're working on gcc
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