everything in a single language is
quixotic.
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[Opinions above are the author's, not those of his employers or colleagues]
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I have to say that I don't think Thaddy has
exactly helped things by implying that a 64-bit double is converted into
an 80-bit extended on an architecture which doesn't support that type.
--
Mark Morgan Lloyd
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[Opinions above are the author's, not those of
t of them are CamelCase but some arelowercase. The result
looks sloppy. Maybe it is OCD, don't know. Itbothers me anyway.
Is my understanding correct that there's no compiler warning for this
sort of inconsistency?
--
Mark Morgan Lloyd
markMLl .AT. telemetry.co .DOT. uk
[Opinions above are the
ark Morgan Lloyd
markMLl .AT. telemetry.co .DOT. uk
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On 25/02/18 10:30, Florian Klämpfl wrote:
Am 25.02.2018 um 11:12 schrieb Mark Morgan Lloyd:> On 25/02/18 02:15, Ozz Nixon wrote:>> {$MACRO
ON}>> {$DEFINE _CTASSERT(X,Y,Z):=assert(x=y,z);}>> Begin _CTASSERT(1,1,'Constant
failed.');end.> > I don't believe parameter
On 25/02/18 02:15, Ozz Nixon wrote:
{$MACRO ON}
{$DEFINE _CTASSERT(X,Y,Z):=assert(x=y,z);}
Begin _CTASSERT(1,1,'Constant failed.');end.
I don't believe parameters are supported :-(
--
Mark Morgan Lloyd
markMLl .AT. telemetry.co .DOT. uk
[Opinions above are the author's, not those of his
On 26/12/17 23:15, Giuliano Colla wrote:
Il 26/12/2017 14:27, Mark Morgan Lloyd ha scritto:> What does gdb (and
possibly other debuggers) make of this? What currently gdb tells (and
any other debugger would tell) is :
No symbol "Item" in current context.
Once the approp
(and possibly other debuggers) make of this? Is it really
appropriate to declare Item as a variable, when it's really more akin to
a macro?
--
Mark Morgan Lloyd
markMLl .AT. telemetry.co .DOT. uk
[Opinions above are the author's, not those of his employers or colleagues
t.
I believe that the feature request entry in Mantis (referring the createdWiki
page) would be indeed useful.
Agreed, but I think https://sourceforge.net/projects/vectorpascalcom/ is
also noteworthy.
--
Mark Morgan Lloyd
markMLl .AT. telemetry.co .DOT. uk
[Opinions above are the author's, not
ge is marked as being for the
discussion of a suggestion, and that it's deleted if not adopted. The
wiki's already got a maintenance problem with outmoded examples etc.
--
Mark Morgan Lloyd
markMLl .AT. telemetry.co .DOT. uk
[Opinions above are the author's, not those of his employers o
absolute addresses and completely
bypassed the descriptor-based protection mechanism.
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[Opinions above are the author's, not those of his employers or colleagues]
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will find a way to make that "anywhere" be malicious code.
Is this made safe by always having an else/otherwise? If so, could the
compiler at least raise a warning if an enumeration was sparse but there
was no else/otherwise to catch unexpected cases?
--
Mark Morgan Lloyd
markMLl .A
/just/ that command line? Is this going via Mantis?
Whatever, good work everybody. It's a public holiday in the UK- it is in
Berlin as well or is the flurry of work just a coincidence?
--
Mark Morgan Lloyd
markMLl .AT. telemetry.co .DOT. uk
[Opinions above are the author's, not those of hi
On 29/05/17 11:12, Karoly Balogh (Charlie/SGR) wrote:
Hi,
On Mon, 29 May 2017, Mark Morgan Lloyd wrote:
My recollection is that the SPARC64 code generator is immature,> hopefully
Jonas will comment on that.
Not sure what "immature" means, granted, I don't know anything aboutSPA
ly Jonas will comment on that.
Adrian, I've put very little time into the SPARC 64-bit Debian port, and
despite tracking the mailing list I'm a little unclear how complete it
is and- in particular- how easily it installs. Does it support multiarch
to allow 32-bit binaries to run seamlessly?
--
Mark
uot;?
What does it do if the parameter is +ve? Note
https://mantis.freepascal.org/view.php?id=31693
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Mark Morgan Lloyd
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[Opinions above are the author's, not those of his employers or colleagues]
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which is probably still relevant:
http://wiki.lazarus.freepascal.org/Lazarus_on_Solaris
As Pierre had to remind me, the -Xn issue is still significant.
--
Mark Morgan Lloyd
markMLl .AT. telemetry.co .DOT. uk
[Opinions above are the author's, not those of his employers or colleagues
On 08/05/17 14:00, Pierre Muller wrote:
Le 05/05/2017 à 13:00, Mark Morgan Lloyd a écrit :> This is something that was discussed on the
FPC-Pascal ML but it died.> > I am able to build installation bundles for SPARC running Linux
(Debian) > and Solaris (OpenSXCE). The fp IDE works
o the existing stuff on the Wiki.
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On 05/05/17 12:00, Pierre Muller wrote:
Hi Mark,
Le 05/05/2017 à 13:00, Mark Morgan Lloyd a écrit :> This is something that was discussed on the
FPC-Pascal ML but it died.> > I am able to build installation bundles for SPARC running Linux
(Debian) > and Solaris (OpenSXCE). The
these be of use for the downloads area, which at present only has
2.6.2 and 2.4.2 respectively?
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[Opinions above are the author's, not those of his employers or colleagues]
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On 08/11/16 10:26, Marco van de Voort wrote:
In our previous episode, Mark Morgan Lloyd said:
The Solaris and C communities appeared to take the line that a correct
compiler "could not" generate unaligned accesses, although they held off
clarifying whether "could" i
ers and languages, I'd suggest that a warning when
potentially-misaligned code is generated is in order.
--
Mark Morgan Lloyd
markMLl .AT. telemetry.co .DOT. uk
[Opinions above are the author's, not those of his employers or colleagues]
___
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, thus
having something pending in local cache sometimes.
Surely that shouldn't happen on a properly-implemented cache-coherent
system?
--
Mark Morgan Lloyd
markMLl .AT. telemetry.co .DOT. uk
[Opinions above are the author's, not those of his employers or colleagues
Marcos Douglas wrote:
On Sat, Feb 27, 2016 at 6:38 AM, Mark Morgan Lloyd
<markmll.fpc-de...@telemetry.co.uk> wrote:
Marcos Douglas wrote:
Is there any chance to implement in the compiler something link this?
S := "
insert into t (
id, description
) values (
1, 'foo'
xtend over multiple lines somewhat like a unix
here-document.
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itter in the retries, does that mean that I have to
put Random() into a critical section?
--
Mark Morgan Lloyd
markMLl .AT. telemetry.co .DOT. uk
[Opinions above are the author's, not those of his employers or colleagues]
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Jonas Maebe wrote:
Mark Morgan Lloyd wrote:
Could I ask for clarification of this please. Are you saying that
Random() will crash if called simultaneously by multiple threads, or
that it will return suboptimal results?
It's undefined. The current implementation won't crash, but the results
es of most computers available at
the time. http://www.webcitation.org/6N4WnuuZk
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[Opinions above are the author's, not those of his employers or colleagues]
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.
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to get
unhappy about :-)
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Marco van de Voort wrote:
In our previous episode, Mark Morgan Lloyd said:
Can anybody confirm that the comment reference to netdh.h in
fcl-net/src/cnetdb.pp should actually be netdb.h,
Yes. At least it was back then. (and according to the Paul Vixie author
reference, some time before
-style programs on DOS/Windows honour it).
I remember previous debate on getting a guaranteed UTC timestamp, and
this might be a useful way forwards provided obviously that the
underlying OS plays ball.
--
Mark Morgan Lloyd
markMLl .AT. telemetry.co .DOT. uk
[Opinions above are the author's
Mark Morgan Lloyd wrote:
Up to and including 2.6.4, this works:
TRoundRobin= CLASS(TObject)
.
PUBLIC
.
(*$IFDEF HAS_TRUE YIELD *)
PROPERTY HasTrueYield: BOOLEAN DEFAULT TRUE;
(*$ELSE *)
PROPERTY HasTrueYield
nvert a compile-time conditional
into something that could be incorporated into an ordinary boolean
expression.
What is the correct syntax, and how far back is FPC compatible with it?
--
Mark Morgan Lloyd
markMLl .AT. telemetry.co .DOT. uk
[Opinions above are the author's, not those of his emp
tempts to reimplement it in Javascript,
indicates that there's an increasing awareness that both the language
and its typical implementations- i.e. embedded in a browser or as
ActionScript in Flash- leave much to be desired.
And Node.js is lipstick on a pig.
--
Mark Morgan Lloyd
markMLl .AT. telem
than 100...
If somebody really has to do this wouldn't "also" be a better choice to
avoid (getting close to overloading "as"? :-/
--
Mark Morgan Lloyd
markMLl .AT. telemetry.co .DOT. uk
[Opinions above are the author's, not those of his employers or colleagues]
_
to specify a finalisation statement which
was only executed if the while loop cycled at least once, or possibly
one which was executed if the loop never cycled.
--
Mark Morgan Lloyd
markMLl .AT. telemetry.co .DOT. uk
[Opinions above are the author's, not those of his employers or
close
is it to being able to program a breadboarded chip as described at
http://hackaday.com/2015/10/09/arming-a-breadboard-everyone-should-program-an-arm/
--
Mark Morgan Lloyd
markMLl .AT. telemetry.co .DOT. uk
[Opinions above are the author's, not those of his employers or colleagues
if it could be generalised to evaluate and
return one of any number of expressions.
--
Mark Morgan Lloyd
markMLl .AT. telemetry.co .DOT. uk
[Opinions above are the author's, not those of his employers or colleagues]
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Michael Van Canneyt wrote:
On Sat, 10 Oct 2015, Sven Barth wrote:
Am 10.10.2015 10:51 schrieb "Mark Morgan Lloyd" <
markmll.fpc-de...@telemetry.co.uk>:
Michael Van Canneyt wrote:
On Fri, 9 Oct 2015, Sven Barth wrote:
I'm not sure this kind of semantics is possible
level.
They're both just tokens to the compiler. At least "?" has the advantage
of being new and not yet used, so is unambiguously.
Jonas, what's your take on this as an overall language guru?
--
Mark Morgan Lloyd
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Schneider wrote:
Folks:
https://alum.mit.edu/www/toms/ftp/shell.p
Shows up as a bad link here.
--
Mark Morgan Lloyd
markMLl .AT. telemetry.co .DOT. uk
[Opinions above are the author's, not those of his employers or colleagues]
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and Embarcadero looks like they won't
add it at all :)
Inline if is an ALGOL feature, and it's inexplicable why it's never been
in Pascal.
--
Mark Morgan Lloyd
markMLl .AT. telemetry.co .DOT. uk
[Opinions above are the author's, not those of his employers or colleagues
David W Noon wrote:
-BEGIN PGP SIGNED MESSAGE-
Hash: SHA1
On Thu, 08 Oct 2015 16:12:56 +, Mark Morgan Lloyd
(markmll.fpc-de...@telemetry.co.uk) wrote about "Re: [fpc-devel] new
features and facilities" (in <mv64m9$95v$1...@pye-srv-01.telemetry.co.uk>):
Ondr
's /always/ an ELSE, so there's no
risk of apparent ambiguity due to "dangling else": a closing END or FI
isn't needed.
It's more difficult to argue for inline CASE, particularly since that
one might have optional ELSE or OTHERWISE.
--
Mark Morgan Lloyd
markMLl .AT. telemetry.co .DOT.
explaining nested inline ifs during the 1960s. However I think that was
more because they simply hadn't worked out how to write language
documentation rather than there being anything inherently tricky about
it, and these days there's absolutely no reason why it shouldn't be
spaced and indented in
not fully implemented by Microsoft. The bottom line
with both NT4 and W2K is that ancillary software like installation
programs are no longer viable.
--
Mark Morgan Lloyd
markMLl .AT. telemetry.co .DOT. uk
[Opinions above are the author's, not those of his employers or colleagues
Marco van de Voort wrote:
In our previous episode, Mark Morgan Lloyd said:
I still have a few NT4 app servers, and a very small number of W2K systems.
Possession That's not the important question, rather how much new software
do you develop for those?
I'd not expect to ship anything
THEN GO TO A9;
I := J := I+1; S[I] := R; MOVE(NAME, V[I]); GO TO A0;
A2: IF F[S[J-1]] = G[S[J]] THEN BEGIN J := J-1; GO TO A2 END;
M := MTB[S[J]];
A3: IF PRTB[M] = 0 THEN BEGIN ERROR(5); GO TO EXIT END;
N := J;
And that's Wirth's code, by the way.
--
Mark Morgan Lloyd
markMLl .AT. telemetry.co
from day one. And informal industry standards normally take the
form of openly-published documentation, and we've got that in abundance
(but if Den wants to help with the indexing, I'm sure we'd all
appreciate it).
--
Mark Morgan Lloyd
markMLl .AT. telemetry.co .DOT. uk
[Opinions above
Marco van de Voort wrote:
In our previous episode, Mark Morgan Lloyd said:
On Linux (other unixes untested),
(afaik vcsa is a linux only thing)
I can confirm it's not in the build for Solaris.
I notice that when installing prebuilt
binaries grab_vcsa is setuid root, but when building from
?
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to the conversion tool (originally suggested by José
Mejuto).
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[Opinions above are the author's, not those of his employers or colleagues]
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outside the range of shift values
whose behaviour is defined).
Alternatively, could it be coopted into something useful e.g. a count of
the zero bits on the left/right of the operand?
--
Mark Morgan Lloyd
markMLl .AT. telemetry.co .DOT. uk
[Opinions above are the author's, not those of his
Entering DoNested
Nested handling in DoNested
Exiting DoNested
Exiting MyMethod
Exiting $main
Useful, thanks.
--
Mark Morgan Lloyd
markMLl .AT. telemetry.co .DOT. uk
[Opinions above are the author's, not those of his employers or colleagues
Jonas Maebe wrote:
Mark Morgan Lloyd wrote on Wed, 13 May 2015:
That particular machine self-destructed, so I don't have an adequate
record of what versions of gld/ld were installed. A rebuilt system
using the SunFreeware libraries etc. (which are for Solaris 10 rather
than 11) appears
Mark Morgan Lloyd wrote:
I'm taking a minimal look at OpenSXCE, which is a compilation of Illumos
(formerly Open Solaris 11 etc.) for SPARC. I've already got SPARC
Solaris 10 running, so am able to see what's different rather than being
confused by a completely unfamiliar platform
in view of the
proprietary nature of both Solaris and SPARC I'm not proposing to put
much time into it- unless of course the existing problems turn out to be
trivial.
--
Mark Morgan Lloyd
markMLl .AT. telemetry.co .DOT. uk
[Opinions above are the author's, not those of his employers
into various problems
which gave me the impression that the raw help file data required the
utilities in the matching FPC version: is that reasonable, or should the
format from 2.0.0 onwards be absolutely invariant?
--
Mark Morgan Lloyd
markMLl .AT. telemetry.co .DOT. uk
[Opinions above
that his bicycle was incompatible with Brno's tram tracks). Can anybody
tell me definitively what else I need, and what I should be doing next?
--
Mark Morgan Lloyd
markMLl .AT. telemetry.co .DOT. uk
[Opinions above are the author's, not those of his employers or colleagues
Marco van de Voort wrote:
In our previous episode, Mark Morgan Lloyd said:
which refers me to http://www.freepascal.org/xcode.html which turns out
to be a redirect to http://www.freepascal.org/down/powerpc/macosx.html
That's wrong and lands you on an old copy of the site. The central site's
Mark Morgan Lloyd wrote:
Afaik that's it, binutils+make+gdb from xcode + the installer.
Thanks, I'll see where I get to.
Testing 2.7.1 at revision 29398, compiling with
make NOGDB=1 OPT='-V2.6.4 -O- -gl -Xs-' all
which has worked for the other architectures I've tried it on, I get
/bin
Jonas Maebe wrote:
On 12 Feb 2015, at 12:17, Mark Morgan Lloyd wrote:
I presume that ld from Xcode 2.0 is slightly too old, and that that
flag isn't supported. Is there a way of accommodating this at the
command line, or is the only way by finding the flag in the build
files and disabling
Jonas Maebe wrote:
On 12 Feb 2015, at 14:13, Mark Morgan Lloyd wrote:
Jonas Maebe wrote:
On 12 Feb 2015, at 12:17, Mark Morgan Lloyd wrote:
I presume that ld from Xcode 2.0 is slightly too old, and that that
flag isn't supported. Is there a way of accommodating this at the
command line
problems up already on such a popular platform.
If FPC's -k option can add linker options, wouldn't an option to remove
them be useful?
I'll probably be back with more problems...
--
Mark Morgan Lloyd
markMLl .AT. telemetry.co .DOT. uk
[Opinions above are the author's, not those of his
/Lazarus
repositories are very sensitive to routing changing in the middle of a
checkout. This shows up in particular if working on a system emulated by
Qemu etc., making sure that all traffic leaves us over the same line
results in a dramatic improvement.
--
Mark Morgan Lloyd
markMLl
Mark Morgan Lloyd wrote:
Pierre Free Pascal wrote:
Hi Mark,
did you try to generate the libraries needed to compile FP IDE with
GDB support by
using the script in fpcsrc/packages/gdbint/gen-gdblib-inc.sh ?
If you have a build directory of a certain GDB version (let's say 7.8.1
the fpc binary from trunk has
overwritten the one from 2.6.4 which IMO should not be allowed to happen.
--
Mark Morgan Lloyd
markMLl .AT. telemetry.co .DOT. uk
[Opinions above are the author's, not those of his employers or colleagues]
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Joost van der Sluis wrote:
On 12/30/2014 07:12 PM, Mark Morgan Lloyd wrote:
/usr/bin/ld: cannot find -lgcc
Install the libc-(devel) package. And your message is not completely
clear, does it compile without gdb?
See also the Lazarus-FAQ.
Up to date URL please? The version I see is dated
underlying adjustments.
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to say which versions I've
exercised the debugger with, above is build only.
I can live without a debugger, all I'm aiming for at the moment is to
have a version of FPC which will work with a fairly recent Lazarus so
that I can publish some stuff I've been working on.
--
Mark Morgan Lloyd
is a hobby project.
I second that. However I'd add that I do so advisedly: I used OS/2 for
quite a few years and I still feel unwell whenever I see it mentioned.
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Mark Morgan Lloyd
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[Opinions above are the author's, not those of his employers or colleagues
messy. It's arguably unsafe
to ever cast true to a number or enumeration, and possibly the best
behaviour would be to ensure that the compiler always handled for b :=
false to not false do and for b := not false to false do the same.
--
Mark Morgan Lloyd
markMLl .AT. telemetry.co .DOT. uk
Mark Morgan Lloyd wrote:
I agree that zero and false are generally equivalent, except possibly in
the case of unix shell scripts where it gets messy. It's arguably unsafe
to ever cast true to a number or enumeration, and possibly the best
behaviour would be to ensure that the compiler always
joke but still makes a
good point.)
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[Opinions above are the author's, not those of his employers or colleagues]
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http
the same notification mechanism.
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OSes could be a problem, even if user apps and their
associated RTLs were happy handling a change.
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[Opinions above are the author's, not those of his employers or colleagues]
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on a cheque?
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errors
and fixes them silently. SPARC Solaris does this and my understanding is
that it introduces a very significant performance overhead; ARM Linux
may also do it (where demanded by the hardware) but my understanding is
that notifications can be enabled.
--
Mark Morgan Lloyd
markMLl
(in particular x86_64) for which
both Solaris and Linux are implemented.
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[Opinions above are the author's, not those of his employers or colleagues]
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a
dynamically-loaded library (DLL or so) and the main program.
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Sergei Gorelkin wrote:
19.11.2014 15:16, Marco van de Voort ?: In our previous episode,
Mark Morgan Lloyd said: introduces a very significant performance
overhead; Linux also does this. On some but by no means all
platforms. I'm specifically trying to highlight the fact that on
SPARC
. A facility to temporarily
cache the IP address, or possibly an application-supplied list of pool
names/addresses, would be useful.
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Mark Morgan Lloyd
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[Opinions above are the author's, not those of his employers or colleagues
standard. Was it written from
scratch, or was it initially based on something like the P6 compiler
which I believe was on some DEC systems?
** Anybody: what's the state of the -Miso mode? I don't see it in the -h
output.
--
Mark Morgan Lloyd
markMLl .AT. telemetry.co .DOT. uk
[Opinions above
Marco van de Voort wrote:
In our previous episode, Mark Morgan Lloyd said:
I see from your reference that the compiler extends ANSI/ISO Pascal, but
there's no indication of whether, when it was written, it was based on
Jensen Wirth or the somewhat later ISO standard. Was it written from
with all of 2.2.4 through 2.6.x on multiple native platforms.
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http
Sietse Achterop wrote:
On 10/12/2014 10:54 AM, Mark Morgan Lloyd wrote:
Sietse Achterop wrote:
Dear list,
I try to get the embedded port of fpc (for both lcp1728 and stm32f4)
to work but fail.
I use the info on
http://wiki.freepascal.org/TARGET_Embedded
but immediate get:
make[1
Michael Schnell wrote:
IMHO it usually is better to first decide if you want to drink tea or
bear before you run to the fridge or to the cupboard.
That could be a fatal error, even if permitted by the parser :-)
--
Mark Morgan Lloyd
markMLl .AT. telemetry.co .DOT. uk
[Opinions above
only for consistency):
serial for i := 0 to m-1 do begin
parallel for j = 0 to n-1 do begin
..
end;
end;
to ensure that the inner loop is parallelised to the greatest possible
extent, but that the outer loop is protected from reentry.
--
Mark Morgan Lloyd
markMLl .AT. telemetry.co .DOT
Hans-Peter Diettrich wrote:
Mark Morgan Lloyd schrieb:
Boian Mitov wrote:
I think parallel processing belongs in library implementations.
I have reservations, based in part on the fact that other language
implementations are prepared to assume responsibility for
parallelisation, in part
modifiers can be
declared as part of the language but implemented as replaceable runtimes.
--
Mark Morgan Lloyd
markMLl .AT. telemetry.co .DOT. uk
[Opinions above are the author's, not those of his employers or colleagues]
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Michael Schnell wrote:
On 09/26/2014 05:31 PM, Mark Morgan Lloyd wrote:
.
A parallel loop syntax is very attractive, but the practical
difficulty is that it would probably have to sit on top of threads and
getting code distributed promptly over multiple worker threads, i.e.
starting up
that operations are
parallelised, and in part on the fact that FPC already vectorises on
e.g. SSE2 hardware.
--
Mark Morgan Lloyd
markMLl .AT. telemetry.co .DOT. uk
[Opinions above are the author's, not those of his employers or colleagues]
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fpc-devel
. that FPC and the OS are
compatible? Or is there a set of portable options that will already do
this, which could be documented prominently?
After all, there's been comparable issues on ARM, and there might be
more on various platforms in the future.
--
Mark Morgan Lloyd
markMLl
Tomas Hajny wrote:
On Tue, September 9, 2014 10:20, Mark Morgan Lloyd wrote:
.
.
I was wondering whether a completely empty program would be a better
test than a Hello, World!. Could a completely empty program be
recognised by the compiler etc. as a special case and built with only
minimal
Marco van de Voort wrote:
In our previous episode, Mark Morgan Lloyd said:
In addition, what is the supposed difference between an empty program
and program built with only minimal RTL initialisation?
I don't see why something like this
program test;
begin
end.
should use anything other than
wound down with the consensus that the
distro had custom libraries, possibly derived from ulibc, and that the
compiler etc. would have to be specially built for those. I was hoping
to set a Qemu-based system to investigate, but didn't get anywhere due
to other commitments.
--
Mark Morgan
Reinier Olislagers wrote:
On 06/09/2014 12:20, Mark Morgan Lloyd wrote:
I think the previous discussion wound down with the consensus that the
distro had custom libraries, possibly derived from ulibc, and that the
compiler etc. would have to be specially built for those. I was hoping
to set
Morgan Lloyd
markMLl .AT. telemetry.co .DOT. uk
[Opinions above are the author's, not those of his employers or colleagues]
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