Salutations everyone,
I'm afraid I have a fairly major project which requires a Linux port. The
problem is, development has been put off for a while because GCC lacks any
means or work around which permits nesting ctors inside a union.
The effort is mature enough that it needs a public release,
Portability is not a huge issue for these builds actually as the plan is to
distribute binaries for the time being, with open source modules, or module
plugins rather, as the system itself is a suite of modules. Also only
operating system with nestable and mutually dependent shared library suppor
Andrew Pinski-2 wrote:
>
> Actually that was not really really an extension before the standard
> come out. The rules changed with the standardization. Really most of
> GCC extensions to the C++ langauge that exist now (except for a few
> new ones dealing with the C++0x standard) are all lega
Robert Dewar wrote:
>
>
> I think there is a lot of merit in
>
> a) C++ programmers writing in C++ and not idiosyncratic dialects
> b) C++ compilers implementing C++ and not idiosyncratic dialects
>
> Certainly if you are interested in porting code, as seems to be the
> case here, following
David Fang wrote:
>
> <$.02>
> It's not highly techinical to see the fundamental difficulty with
> mixing ctor/dtors and unions. At the core of C++ is the association with
> constructors as initialization actions at the beginning of an object's
> lifetime, and likewise destructors associ
Brooks Moses-3 wrote:
>
> michael.a wrote:
>> It would be interesting for someone to try to make a practical argument
>> that
>> is anything but a nest of technicalities, as to why ctors and unions
>> shouldn't be mixable.
>
> The Fortran langu
Joe Buck wrote:
>
> On Fri, Jun 15, 2007 at 08:00:24PM -0700, michael.a wrote:
>> I've actually never seen "placement new" before I think. Its a useful way
>> to
>> "reconstruct" heaped memory, but not useful in anyway in the situation I
>
Andrew Pinski-2 wrote:
>
> Huh? It can be used with stack variables, we have tests in the
> testsuite where we use it with such.
Thats not what google told me, I believe from every source I took a look at.
>
>> As for the discussion of unions, placement new is way too much overhead.
>
David Fang wrote:
>
>
> ... And when the said constructor is trivial (e.g. for POD), then you pay
> nothing, zilch, nada. (same with placement delete) In C++, some things
> you write (od don't write) are merely abstractions for what should happen,
> which can represent 'nothing'. Only if yo
Any advice on compiling gcc? That is the chicken and egg problem. If I
install a binary version of GCC, then use it to build and install a custom
GCC (which I want to become the system wide GCC) ...then how is this
commonly done? --of course I would like the non custom GCC to do any future
rebuild
Joe Buck wrote:
>
> On Sat, Jun 16, 2007 at 12:08:40PM -0700, michael.a wrote:
>> As for "placement new", from what I can find, it is unsafe to use with
>> any
>> memory that isn't part of the heap.
>
> You do have to concern yourself with alignm
Martin Jambor wrote:
>
> On Sat, Jun 16, 2007 at 06:16:03PM -0700, michael.a wrote:
>>
>> Any advice on compiling gcc? That is the chicken and egg problem. If I
>> install a binary version of GCC, then use it to build and install a
>> custom
>> GCC (which
Just for the record, this construction was proposed to me from behind the
scenes:
> class Rect
> {
>Rect()
>{
> new (&xlat) Vec2(); // Explicit calls to the ctor
> new (&size) Vec2();
>}
>~Rect()
>{
> xlat.~Vec2();
>
Aaron W. LaFramboise-3 wrote:
>
> michael.a wrote:
>
>> So in closing, I'm interested in any ideas / advice, but compromising the
>> existing codebase is completely out of the question. You have my
>> appreciation in advance naturally...
>
> I suspect
I'm sorry, but can anyone get through to any of these mirrors ever:
http://gcc.gnu.org/mirrors.html
Can someone recommend an alternative means of obtaining GCC source releases?
I can't find a GCC source package in debian repositories.
--
View this message in context:
http://www.nabble.com/I%
Tim Prince-4 wrote:
>
> Then use s release or snapshot tarball from mirrors of
> ftp://gcc.gnu.org/pub/gcc/, and/or get better software, and use gcc-help
> as intended.
>
Yes, I apologize, that link and virtually all of the mirrors were timing out
all last night (well for a couple hours at
If all you need is one memeber that has constructors / destructors, and
all other members are PODs that provide an alternate view of the contents,
then I think that would make a logical extension of the transparent union
extension. A transparent union as passed to functions in the same manner a
Eric Christopher-2 wrote:
>
>
> Sounds like you're using ./configure. Are you following the directions
> at:
>
> http://gcc.gnu.org/install/configure.html
>
> -eric
>
>
Thank you, I guess I missed that page somehow.
Only I ran into the same Libc wall again, so I'm temporarily stumped:
Eric Christopher-2 wrote:
>
>
> You might want to make sure you're passing the same configure options
> that the distro did when building. It might cause some incompatibility
> somewhere that ld is detecting. From a quick look it seems that ld
> believes that the libc that you have doesn
Eric Christopher-2 wrote:
>
>
> 'gcc -v' will give you the information on how the system gcc was
> configured.
>
> -eric
>
>
Here is the gcc -v output for the binaries installed by the distro:
Using built-in specs.
Target: x86_64-linux-gnu
Configured with: ../src/configure -v
--enable-l
Brian Dessent wrote:
>
> "michael.a" wrote:
>
>> gcc version 4.0.3 (Ubuntu 4.0.3-1ubuntu5)
>
> This belongs on gcc-help not here.
>
> Debian-based distros use a 32/64 bit /usr/lib configuration that is
> backwards from what the rest of the world uses
Daniel Jacobowitz-2 wrote:
>
> On Mon, Jun 18, 2007 at 04:57:46PM -0700, michael.a wrote:
>> Yeah, I know (mailing lists are so particular -- I guess I fail to see
>> the
>> value beyond a noncentralized discussion)
>
> But since I believe three different peop
michael.a wrote:
>
>
> Since I'm already posting, now I'm seeing:
>
> /home/users/michael/gcc.obj/gcc/f951: symbol lookup error:
> /home/users/michael/gcc.obj/gcc/f951: undefined symbol:
> __gmp_get_memory_functions
>
>
I was able to find this:
http:
michael.a wrote:
>
>
> So, I really appreciate all of your patience in helping to get me through
> the build process. I guess I'll post something about how the hacking
> effort / reprogramming expiriments work out. In the meantime I hope this
> discussion (and th
michael.a wrote:
>
> I should probably just find that Debian patch and install into the system
> directories, but I still don't understand if there are any factors outside
> of gcc necessary for a successful build (could glibc be related to the
> crt.o files -- and are the
Cat-4 wrote:
>
> $ ls -lad gcc*
> 4 drwxr-xr-x 3 root root 4096 2007-06-21 12:35 gcc-4.1-4.1.1ds2
> 6956 -rw--- 1 root root 7109677 2006-12-11 06:02
> gcc-4.1_4.1.1ds2-21.diff.gz
> 4 -rw--- 1 root root 2407 2006-12-11 06:02
> gcc-4.1_4.1.1ds2-21.dsc
> 36156 -rw---
michael.a wrote:
>
> I guess in the meantime I'll go ahead and install it and see if I can use
> it or not.
>
Success!
Will likely be a good while before I can report whether simply knocking out
the errors cause any run-time issues.
In the meantime, if anyone can clue
michael.a wrote:
>
> Will likely be a good while before I can report whether simply knocking
> out the errors cause any run-time issues.
Is there some reason why stdarg.h would not be on my system (amd64 ubuntu)
I can find it in the various gcc source trees (apparently gcc bring
Meissner, Michael wrote:
>
>
> You probably should root around to find out why it isn't installed. I
> would
> suspect you did not install the appropriate development packages or
> somehow
> your compilation system is messed up.
>
I rooted thoroughly, not wanting to make this post for fear
michael.a wrote:
>
>
> I guess I will have to sort out why the compiler isn't finding it (any
> advice is welcome -- just for the record, I did a straight install from
> packaged sources with previous gcc installs removed before hand)
>
>
Actually, funny story...
Antoine Chavasse wrote:
>
>> For instance, say you need to impliment a GUI, so you have yourself a
>> rectangle struct which consists of four floating point values (the origin
>> and difference between the opposite corner) ...Now you want those four
>> values, but you also have a 2D vector stru
mark-28 wrote:
>
> I don't understand what is being requested. Have one structure with
> four fields, and another with two, and allow them to be used
> automatically interchangeably? How is this a good thing? How will
> this prevent the implementor from making a stupid mistake?
>
Its less a q
On Wed, Jun 27, 2007 at 11:36:23PM -0700, michael.a wrote:
> mark-28 wrote:
I agree with the sentiment, but not with the relevance. I don't see
how having a four field structure automatically appear as a completley
different two field structure, based only upon a match up between
fie
mark-28 wrote:
>
>> Mark Mielke wrote "Why not This?":
>> > class Rectangle {
>> > Vector2d position;
>> > Vector2d size;
>> > };
>> > ... rectangle.position.x = ... ...
>
> On Thu, Jun 28, 2007 at
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