g++ compiled C++ code called from gcc compiled C codeHi all!
In a C library compiled with gcc there is a pointer to a function defined
and called from within the library. Now I'm using that library in a C++
project and I'd like to set this function pointer to a C++ function. Do I
have to set the C++ function __attribute__((cdecl)) ? Are there any other
things I have to worry about? See example code below.
Thanks very much,
Klaus
Example Code:
-----------------------------------------------------
*** lib.c (compiled with gcc and linked to a library):
void (* logfunc)(int,char*,...);
int getSomething(void)
{
...
logf...
compiling c code but libraries are compiled in c++hi,
We have written cunit code for testing some APIs. defination of
those APIs are in c++ and .so library is created of them. when I
compile my cunit code it gets compiled successfully but while liking
it gives undefined reference to symbol. can anyone help me in this
matter.
Regards
Sumit Shrivastava
On 29 May 2007 04:11:14 -0700 sumit <sumit.shrivastava09@gmail.com> wrote:
| We have written cunit code for testing some APIs. defination of
| those APIs are in c++ and .so library is created of them. when I
| compile my cunit code it gets compiled successf...
mex compiling c++ code but not c codei get the following error when i try to compile the following code:
//hello.c
#include <mex.h>
void mexFunction(int nlhs, mxArray *plhs[], int nrhs, const mxArray *prhs[])
{
mexPrintf("Hello World!\n");
}
/
usr/local/MATLAB/R2012a/bin/mex: 1: eval: -c: not found
mex: compile of ' "hello.c"' failed.
Error using mex (line 206)
Unable to complete successfully.
when i use the same code but name it as hello.cpp it compiles fine & prints hello world.
im using matlab 2012a,ubuntu 12.04,gcc-4.6,g++-4.6
my mex-opts.sh has
C...
Cannot compile c/c++ code with Matlab R2009a Lcc compilerHello,
I am using the lcc compiler in Matlab R2009a to create MEX files. The c/c++ files have previously been compiled and found to work in visual studio, but the matlab compiler appear to expect another syntax:
class 'Sample.cpp':
#include <stdio.h>
#include <math.h>
#include "mex.h"
static const int nbrOfBands = 1;
double FindShortestPath(double fromAngle, double toAngle);
double FindShortestPath(double fromAngle, double toAngle, double scanDirection);
double FindShortestPath(double fromAngle, double toAngle)
{
return findShortestPath(fro...
code that compiles in c but not in c++?Hi,is there a code that can compile in c but not in c++ and does not
use any c++ keywords as identifiers? I suspect using void* works in c
but not in c++. Any suggestions?
al.c...@gmail.com wrote:
> Hi,is there a code that can compile in c but not in c++ and does not
> use any c++ keywords as identifiers?
Yes, there are plenty of examples, here is a simple one:
int * iptr = malloc(10); /* Cast required in C++, frowned on in C */
C and C++ are two different languages and I wouldn't recommend trying
to write code that works in both. However, if you need to know how to
write C++ ...
enum bound check in compiler time in CHello friends,
I am newbie in C. I have one enum variable for events. There are 2
types of events and I want to split them, but one can add events enums
later for the both the types.I am keeping some space between two types
of events. now, the problem is How to check compile time that first
type of events are now overlapped with second type?
Is there anyway to check for enums in compile time?
any help would be appriciated.
Thanks in advance,
Parag
paragborkar@gmail.com wrote On 04/23/07 10:55,:
> Hello friends,
>
> I am newbie in C. I have one enum variable for events. There ar...
program that compiles in C compiler but not in C++ compilerHi,
I need a small program that compiles in C compiler but not in C++
compiler.
Thx in advans,
Karthik Balaguru
KBG <karthik.balaguru@lntinfotech.com> wrote:
> I need a small program that compiles in C compiler but not in C++
> compiler.
No problem, just send $10 to paypal@zevv.nl and I'll do your homework
for you.
--
:wq
^X^Cy^K^X^C^C^C^C
KBG said:
> Hi,
>
> I need a small program that compiles in C compiler but not in C++
> compiler.
Can you think of any syntactic differences between C and C++? For example,
what about keywords? They are very, very sen...
Can you please name a tool to check C/C++ source code against a set of coding standards?I am not looking for a lint-like static code analyzer, I would like to check against coding standards like variable naming, capitalization, spacing, identation, bracket placement, and so on.
...
Are sun studio C/C++ compilers and Forte C/C++ compilers same ??Is there any difference between sun studio compilers and forte
compilers???
or the names have been changed???
In article <1145338052.955429.256610@v46g2000cwv.googlegroups.com>,
"ameya_agnihotri" <ameyaagnihotri22@gmail.com> writes:
> Is there any difference between sun studio compilers and forte
> compilers???
> or the names have been changed???
One of many name changes in the product's history (including
amongst others, Java somethingortheother, Workshop, Proworks/Teamworks,
and probably more I've forgotten). Of course, the versions and features
cha...
Compiling IDL code with a C compilerHi everyone,
I'm interested in writing an IDL-to-C compiler, for optimization
purposes. To be clear about what I'm talking about, here's what some
sample IDL code would look like:
;#COMPILE gcc -O1
function EvaluateEnergy, field, area
; Type Declarations
;#field = fltarr(101, 101)
;#area = fltarr(101, 101)
;#sum = float(0.)
sum = 0
for x=0, 100 do begin
for y=0, 100 do begin
sum = sum + field[x,y] ^ 2 * area[x, y]
endfor
endfor
return, sum
end
My IDL-to-C (pre)compiler would parse the IDL pro files, looking for
functions preceded by a ;#COMPILE (aka ~preprocessor di...
Compile-Time Checking for Insertion Rights on a C++ DOM TreeWhile working on a DOM data structure, I noticed that only detached
nodes and newly created nodes could be legally inserted into the
tree. Having read a little about smart pointers and design-by-
contract, I tried to enforce this condition by writing something
analogous to:
class Node {
private:
Node (std::string tag); // Clients: use Node::create() instead!
...
public:
static std::unique_ptr<Node> create(std::string tag);
std::unique_ptr<Node> detach();
void insertNodeAsFirstChild(std::unique_ptr<Node> child);
...
public:
...
Compile time of C++ vs C#Hi,
I am curious to know why C# code much faster than a similar sized C++
code. How does MSIL help? Does having a common base class like object
help in reducing compile times?
Thanks,
Shireesh
[The optimizer is usually the slowest part of a compiler and I would guess that
MSIL offers fewer opportunities than native code. -John]
On 2009-09-01, Shirsoft <shirsoft@gmail.com> wrote:
> I am curious to know why C# code much faster than a similar sized C++
> code. How does MSIL help? Does having a common base class like object
> help in reducing compile times?
Which C++ compiler? ...
Compile C Code With A CPP Compiler?Hey all,
I'm working with some legacy C code and I would like to compile it as
a CPP file.
I get the following error message:
driver.cpp:87: cannot convert `void *' to `GenericStruct *' in
assignment
Reading through the web I've come across vague references to the
'void' issue between C and C++, I don't know C++ well and would
appreciate any pointers or references which might help me out.
Thanks!
entropy
email_entropy123@yahoo.com (entropy123) wrote in
news:90cdce37.0309301057.25d7506f@posting.google.com:
> I'm working with some legacy C code and I w...
Compiling Matlab code to C++ codeHi,
I'm trying to compile matlab code into C++. I ran mbuild -setup to use
MS VS.(on a side note, can Matlab use g++ instead? it only gave
options for MS VS and LCC) Then I tried 'mcc -m add -d bin -v'
The program is simple:
function add(As, Bs)
A = str2num(As);
B = str2num(Bs);
C = A + B;
But I run into this non descriptive error message:
Generating MATLAB path for the compiled application...
Created 34 path items.
Depfun main loop converged in 2 iterations, total number of files =
11
Begin validation of MEX files: Thu Feb 22 09:04:57 2007
End validation of MEX files: Thu Fe...
running time/speed of .m code compiled and deployed in cCan anyone let me know whether a .m code compiled and
included as a library/header file in C (application
deployment) runs faster as compared to running on matlab
environment?
"Rubal " <rub_dua_06@yahoo.com> schrieb im Newsbeitrag
news:fm6oen$61m$1@fred.mathworks.com...
> Can anyone let me know whether a .m code compiled and
> included as a library/header file in C (application
> deployment) runs faster as compared to running on matlab
> environment?
No, it won't. Since R14 the compiled code and the interpreted
code run on same speed, because the code is not...
How to compile this C Code in Dev-C++??I have done the following: New Project -> Console Application -> C Project.
Then I get the following text:
#include <stdio.h>
#include <stdlib.h>
int main(int argc, char *argv[])
{
system("PAUSE");
return 0;
}
But where do I write my own C code? I have written the following code:
void c(unsigned int n) {
while (n > 1)
if ((n & 1) == 0)
n = n/2;
else
n = 3 * n + 1;
}
But where should I put it and how do I compile it?
js
* JS:
> I have done the following: New Project -> Console Application -> C Project.
Off-topic on two groun...
C++0x/1x exception specifications proposal: Compile-time checkedPerhaps a mechanism can be introduced in the C++0x/1x standard,
something simple like defining a function as:
void somefunc(void) throw()
{
// ...
}
and getting a compile time error saying something like:
"Error: void somefunc(void) throw(): Wrong exception specification.
somefunc can throw std::bad_alloc, std::range_error".
That is make the compiler to check exception specifications for errors too.
Ioannis A. Vranos
In article <fmvvf1$1i2i$1@ulysses.noc.ntua.gr>,
ivranos@no.spamfreemail.nospam.gr says...
> Perhaps a mechanism can be introduced in the C++0x/1...
C++0x/1x exception specifications proposal: Compile-time checkedPerhaps a mechanism can be introduced in the C++0x/1x standard,
something simple like defining a function as:
void somefunc(void) throw()
{
// ...
}
and getting a compile time error saying something like:
"Error: void somefunc(void) throw(): Wrong exception specification.
somefunc can throw std::bad_alloc, std::range_error".
That is make the compiler to check exception specifications for errors too.
Ioannis A. Vranos
--
[ See http://www.gotw.ca/resources/clcm.htm for info about ]
[ comp.lang.c++.moderated. First time posters: Do this! ]
Ioannis Vranos w...
using Dev-C++ to compile ONLY C code ?Hi there,
don't know if it's the right group, but I'll try anyway. Sorry if I'm OT,
anybody can be so patient to tell me the right group ? Thanks :)
Anyway, the question is:
I know I can write C programs using a C++ environment like Dev-C++. However,
I'd like to know if there are some options that allow Dev to ignore C++
syntax and act as a C-only compiler. Is this possible ? And, if not, can
anybody suggest me a free C compiler under Windows ?
Thanks a lot.
--
Emanuele Blanco
PGP Key Available - http://studenti.unina.it/~emblanco/key.asc
"Emanuele Blanco"...
Why would someone use c++ compiler on a C code?
Would it suppress errors?
Is he trying to hide errors in his code?
On Apr 7, 9:56 pm, 2005 <FW3...@sbcglobal.net> wrote:
> Would it suppress errors?
>
> Is he trying to hide errors in his code?
He is using g++ on a *.c code!
Also what is so different between gcc & cc compiler - any advantages?
2005 wrote:
> Would it suppress errors?
>
> Is he trying to hide errors in his code?
Probably the reverse, C++ and its compilers are more pedantic about a
number of issues, particularly type safety.
Do bear in ming there are sometimes obscure semantic differences betw...
Compile c/c++ code on a pocket pc?Hi, my name is Sean and I was wondering if it's possible to compile
c/c++ code on a pocket pc running windows ce. Is it possible?
On 25 Apr 2005 07:56:34 -0700, "twoeyedhuman1111"
<twoeyedhuman1111@gmail.com> wrote:
>Hi, my name is Sean and I was wondering if it's possible to compile
>c/c++ code on a pocket pc running windows ce. Is it possible?
The closest I know about is PocketC:
http://www.orbworks.com/wince/index.html
I've never tried it, so I can't say more.
The only other C/C++ compilers I know about require cross-compilation
(develop and build on desktop, run on handheld). I _think_ gnu has
some support. Microsoft provides eVC, which is available free (_large_
download); I don't know the web location offhand, but your can
probably find it by going to www.microsoft.com and searching for evc
(search box in top right corner).
For some other possibilities, see:
http://www.cewindows.net/developer/languages.htm
-----------------------------------------
To reply to me, remove the underscores (_) from my email address (and please indicate which newsgroup and message).
Robert E. Zaret, eMVP
PenFact, Inc.
500 Harrison Ave., Suite 3R
Boston, MA 02118
www.penfact.com
"twoeyedhuman1111" <twoeyedhuman1111@gmail.com> wrote:
>
>
> Hi, my name is Sean and I was wondering if it's possible to compile
> c/c++ code on a pocket pc running windows ce. Is it possible?
there is a port of gcc called pgcc th...
Sequitur C/C++ codeHello,
Has perhaps anyone tried the Sequitur C/C++ code available at
http://sequitur.rutgers.edu/sequitur (follow the link "Full source") ?
Judging from the Makefile, it is supposed to be compiled using gcc, but
I have tried several versions of gcc under both Linux and Windows, and
it either doesn't compile (there are include files required that do
actually not exist), or it does, but crashes when ran.
I would appreciate it if someone who successfully managed to compile the
code and run the resulting program, told me using which
compiler/settings/platform/... they did it.
Tha...
Compile C/C++ code and connect it to matlabHello,
I want to compile a C++ code and connect it to matlab. Can anyone pls tell me how i should do it. I tried doing it using mex with some built in matlab c codes, but these c codes are very diff from what i have written. My c code is the normal c code that we write.I am naive regarding this and so kindly explain as much as possible.
Thanks,
Prads
On 27 Okt, 02:57, prads <kashya...@gmail.com> wrote:
> Hello,
> I want to compile a C++ code and connect it to matlab. Can anyone pls tell me how i should do it. I tried doing it using mex with some built in matlab c codes, but thes...
is c the best? why does everything else compile to c?Is it jsut the truth that you have to learn c?
I know almost no programming and want to learn and build killer apps
1 people say use java its the best for getting large complex thgns done
2 learn perl because it has msot code online and great frameworks and
is faster to develop than java
3 learn clisp becauase it has most power and real macros
4 learn haskell because it has lazy evaluation and strong types
eliminate errors
5 learn ruby because it maximizes programming ease and has good
libraries
6 learn tcl beacuase it is simple and has gui abilities
7 learn smalltalk becasue oo i sbest way to...