My link error:
Qt\Tools\mingw530_32\i686-w64-mingw32\include\comutil.h:278: erreur : undefined reference to `_com_util::ConvertStringToBSTR(char const*)#4'
Actually in .pro file:
LIBS += -lws2_32 -lwbemuuid -lole32
Which lib to add? lib comsuppw? Is it available for mingw?
Qt 5.10 - mingw32
The problem was due to the function bstr_t() in:
hres = pSvc->ExecQuery(
bstr_t("WQL"),
bstr_t("SELECT * FROM Win32_Process"),
WBEM_FLAG_FORWARD_ONLY | WBEM_FLAG_RETURN_IMMEDIATELY,
NULL,
&pEnumerator);
The solution is to create BSTR strings directly:
BSTR bstr_wql = SysAllocString(L"WQL" );
BSTR bstr_sql = SysAllocString(L"SELECT * FROM Win32_Process" );
then use them,
hres = pSvc->ExecQuery(bstr_wql, bstr_sql, ...);
Don't forget to free the allocated memory strings after the query:
SysFreeString(bstr_wql);
SysFreeString(bstr_sql);
The linker is satisfied.
bstr_t(L"WQL") is work
Related
I'm porting this piece of C code to VB.net. The function cat receives a pointer to a file, reads it and rewrites it into the console (works the same way as the TYPE command from DOS). My vb implementation works well for all types of files, except exe files, in which case, writes a lot more of "text" than what actually is in the exe file.
This is the C code:
enum {
BSIZE = 8192
};
int
cat(FILE *f)
{
char buf[BSIZE];
int n;
while((n = fread(buf, 1, BSIZE, f)) > 0)
if(fwrite(buf, 1, n, stdout) != n)
return 0;
return 1;
}
And this is the vb code:
Public Const BSIZE As Integer = 8192
Function cat(ByVal f As Stream) As Integer
Dim buf(BSIZE) As Byte
Dim n As Integer
Do
n = f.Read(buf, 0, BSIZE)
Try
Console.OpenStandardOutput.Write(buf, 0, n)
Catch ex As IOException
Return 0
End Try
Loop While n > 0
Return 1
End Function
For example, I used the C-exe of the program as the file to read. The C version writes about 10 lines of unintelligible characters, while the VB version writes more than 70; among these, I've noticed something interesting:
P§# Mingw runtime failure: VirtualQuery failed for %d bytes at
address %p Unknown pseudo relocation protocol version %d. Unknown
pseudo relocation bit size %d. GCC: (tdm-1) 5.1.0 GCC: (tdm-1)
5.1.0 GCC: (tdm-1) 5.1.0 GCC: (tdm-1) 5.1.0
It looks like the Stream.Read method is reading more than what it should read. Why is this happening?
I have a program to recognize files based on their signatures. Works great. But I'm new to C and am now trying to get an IDE called CLion to work. However, I can't figure out how to add command arguments to cmake - such that when I run main and want to pass a gifFile or a pdfFile to recognize I can do so. Here is my code so far for cmake.
cmake_minimum_required(VERSION 3.8)
project(Assignment6)
set(CMAKE_C_STANDARD 99)
set(SOURCE_FILES file_recognizer.c)
add_executable(Assignment6 ${SOURCE_FILES})
in the command line this would be something like
gcc file_recognizer.c -o Assignment6
and then you say
./Assignment6 gifFile.gif
How do I get cmake to accept the argument at the end, "gifFile.gif"?
Below is my main function for reference if needed
int main(int argc, char const *argv[]) {
FILE *yourFile;
unsigned char *fileBytes, *fileType;
long fileLength;
fileLength = 10;
if(argc != 2 || (yourFile = fopen(argv[1], "rb")) == NULL) {
printf("Invalid Input\n");
exit(-1);
}
fileBytes = readFile(yourFile, fileLength, fileBytes);
determineFileType(fileBytes, fileType);
return 0;
}
This isn't something CMake is designed to do. I mean, it's do-able with CMake:
add_custom_command(OUTPUT output COMMAND Assignment6 ARGS gifFile.gif)
But what it sounds like what you want to do isn't part of the build process and CMake is all about the building, testing, and packaging software, not running it.
Since you're using CLion, you might be better off setting the program arguements in CLion for debugging purposes.
Click here:
and enter your args here:
I tried to compile a simple POSIX example in CLIon ide, but it doesn`t know about pthread library, I think...
Here is the code:
void *func1()
{
int i;
for (i=0;i<10;i++) { printf("Thread 1 is running\n"); sleep(1); }
}
void *func2()
{
int i;
for (i=0;i<10;i++) { printf("Thread 2 is running\n"); sleep(1); }
}
int result, status1, status2;
pthread_t thread1, thread2;
int main()
{
result = pthread_create(&thread1, NULL, func1, NULL);
result = pthread_create(&thread2, NULL, func2, NULL);
pthread_join(thread1, &status1);
pthread_join(thread2, &status2);
printf("\nПотоки завершены с %d и %d", status1, status2);
getchar();
return 0;
}
It is known, that this code is correct, because it's taken from the example in the book. So Clion marks second arguments of pthread_join function as a mistake, giving this error:
error: invalid conversion from ‘void* (*)()’ to ‘void* (*)(void*)’
I suppose, thet the problem is in the CmakeList. Here is my current CMakeList:
cmake_minimum_required(VERSION 3.3)
project(hello_world C CXX)
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=c++11 -pthread")
set(SOURCE_FILES main.cpp)
add_executable(hello_world ${SOURCE_FILES})
Your function signature is wrong for the callback to pthread.
func1 and func2 have the signature void* (*)(). This means returns a void* and has no parameters
But pthread wants void* (*)(void*) Here you also have a void* as parameter.
so your functions should look like this:
void *func1(void* param) ...
You don't have to use the parameter but it has to be there in the declaration.
Note:
To tell cmake to link against pthread you should use this:
find_package( Threads REQUIRED )
add_executable(hello_world ${SOURCE_FILES})
target_link_libraries( hello_world Threads::Threads )
See here: How do I force cmake to include "-pthread" option during compilation?
I am trying to install aruco on my Windows machine using cmake 3.5.2 as suggested by the aruco developper.
My config:
Windows8
CMake 3.5.2
ArUco 2.0.5
I can configure and generate successfully aruco in cmake.
Then I go to aruco\build -> right click-> open cmd -> type mingw32-make -> get the following error:
C:\aruco-2.0.5\build>mingw32-make
Scanning dependencies of target aruco
[ 2%] Building CXX object src/CMakeFiles/aruco.dir/ar_omp.cpp.obj
[ 4%] Building CXX object src/CMakeFiles/aruco.dir/cameraparameters.cpp.obj
[ 6%] Building CXX object src/CMakeFiles/aruco.dir/cvdrawingutils.cpp.obj
In file included from C:\aruco-2.0.5\src\aruco.h:149:0,
from C:\aruco-2.0.5\src\cvdrawingutils.h:31,
from C:\aruco-2.0.5\src\cvdrawingutils.cpp:28:
C:\aruco-2.0.5\src\markerdetector.h:160:40: warning: "/*" within comment [-Wcomm
ent]
ARUCO_MIP_36h12, //**** recommended
^
C:\aruco-2.0.5\src\markerdetector.h:212:60: warning: unused parameter 'r2' [-Wun
used-parameter]
void setThresholdParamRange(size_t r1 = 0, size_t r2 = 0) {_params. _thresP
aram1_range = r1; }
^
C:\aruco-2.0.5\src\markerdetector.h:267:30: warning: unused parameter 'val' [-Wu
nused-parameter]
void setDesiredSpeed(int val){}
^
In file included from C:\aruco-2.0.5\src\posetracker.h:33:0,
from C:\aruco-2.0.5\src\aruco.h:150,
from C:\aruco-2.0.5\src\cvdrawingutils.h:31,
from C:\aruco-2.0.5\src\cvdrawingutils.cpp:28:
C:\aruco-2.0.5\src\markermap.h: In member function 'void aruco::Marker3DInfo::to
Stream(std::ostream&)':
C:\aruco-2.0.5\src\markermap.h:49:77: warning: comparison between signed and uns
igned integer expressions [-Wsign-compare]
void toStream(std::ostream &str){str<<id<<" "<<size()<<" ";for(int i=0;i<si
ze();i++) str<<at(i).x<<" "<<at(i).y<<" "<<at(i).z<<" ";}
^
In file included from C:\aruco-2.0.5\src\posetracker.h:33:0,
from C:\aruco-2.0.5\src\aruco.h:150,
from C:\aruco-2.0.5\src\cvdrawingutils.h:31,
from C:\aruco-2.0.5\src\cvdrawingutils.cpp:28:
C:\aruco-2.0.5\src\markermap.h: In member function 'void aruco::Marker3DInfo::fr
omStream(std::istream&)':
C:\aruco-2.0.5\src\markermap.h:50:80: warning: comparison between signed and uns
igned integer expressions [-Wsign-compare]
void fromStream(std::istream &str){int s;str>>id>>s;resize(s);for(int i=0;i
<size();i++) str>>at(i).x>>at(i).y>>at(i).z;}
^
[ 9%] Building CXX object src/CMakeFiles/aruco.dir/dictionary.cpp.obj
In file included from C:\aruco-2.0.5\src\dictionary.cpp:9:0:
C:\aruco-2.0.5\src\markermap.h: In member function 'void aruco::Marker3DInfo::to
Stream(std::ostream&)':
C:\aruco-2.0.5\src\markermap.h:49:77: warning: comparison between signed and uns
igned integer expressions [-Wsign-compare]
void toStream(std::ostream &str){str<<id<<" "<<size()<<" ";for(int i=0;i<si
ze();i++) str<<at(i).x<<" "<<at(i).y<<" "<<at(i).z<<" ";}
^
In file included from C:\aruco-2.0.5\src\dictionary.cpp:9:0:
C:\aruco-2.0.5\src\markermap.h: In member function 'void aruco::Marker3DInfo::fr
omStream(std::istream&)':
C:\aruco-2.0.5\src\markermap.h:50:80: warning: comparison between signed and uns
igned integer expressions [-Wsign-compare]
void fromStream(std::istream &str){int s;str>>id>>s;resize(s);for(int i=0;i
<size();i++) str>>at(i).x>>at(i).y>>at(i).z;}
^
C:\aruco-2.0.5\src\dictionary.cpp: In static member function 'static std::string
aruco::Dictionary::getTypeString(aruco::Dictionary::DICT_TYPES)':
C:\aruco-2.0.5\src\dictionary.cpp:236:11: warning: enumeration value 'ARTAG' not
handled in switch [-Wswitch]
switch(t){
^
C:\aruco-2.0.5\src\dictionary.cpp: In member function 'aruco::MarkerMap aruco::D
ictionary::createMarkerMap(cv::Size, int, int, const std::vector<int>&, bool)':
C:\aruco-2.0.5\src\dictionary.cpp:275:39: warning: comparison between signed and
unsigned integer expressions [-Wsign-compare]
if (gridSize.height*gridSize.width!=ids.size())throw cv::Exception(9001, "g
ridSize != ids.size()Invalid ", "Dictionary::createMarkerMap", __FILE__, __LINE_
_);
^
C:\aruco-2.0.5\src\dictionary.cpp:284:23: warning: comparison between signed and
unsigned integer expressions [-Wsign-compare]
for (int i=0;i<ids.size();i++) TInfo[i].id=ids[i];
^
C:\aruco-2.0.5\src\dictionary.cpp:285:13: warning: unused variable 'sizeY' [-Wun
used-variable]
int sizeY=gridSize.height*MarkerSize+(gridSize.height-1)*MarkerDistance
;
^
C:\aruco-2.0.5\src\dictionary.cpp:286:13: warning: unused variable 'sizeX' [-Wun
used-variable]
int sizeX=gridSize.width*MarkerSize+(gridSize.width-1)*MarkerDistance;
^
C:\aruco-2.0.5\src\dictionary.cpp:312:37: warning: comparison between signed and
unsigned integer expressions [-Wsign-compare]
if (CurMarkerIdx>=ids.size()) throw cv::Exception(999," Fid
ucidalMarkers::createMarkerMapImage_ChessMarkerMap","INTERNAL ERROR. REWRITE THI
S!!",__FILE__,__LINE__);
^
C:\aruco-2.0.5\src\dictionary.cpp:300:13: warning: unused variable 'centerX' [-W
unused-variable]
int centerX=sizeX/2;
^
C:\aruco-2.0.5\src\dictionary.cpp:301:13: warning: unused variable 'centerY' [-W
unused-variable]
int centerY=sizeY/2;
^
C:\aruco-2.0.5\src\dictionary.cpp:303:14: warning: unused variable 'centerData'
[-Wunused-variable]
bool centerData=true;
^
[ 11%] Building CXX object src/CMakeFiles/aruco.dir/ippe.cpp.obj
C:\aruco-2.0.5\src\ippe.cpp: In function 'void IPPE::IPPComputeRotations(double,
double, double, double, double, double, cv::OutputArray, cv::OutputArray)':
C:\aruco-2.0.5\src\ippe.cpp:307:45: warning: variable 'ata10' set but not used [
-Wunused-but-set-variable]
double a00, a01, a10,a11, ata00, ata01, ata10,ata11,b00, b01, b10,b11,binv0
0, binv01, binv10,binv11;
^
C:\aruco-2.0.5\src\ippe.cpp:311:19: warning: variable 'a' set but not used [-Wun
used-but-set-variable]
double b0, b1,a,gamma,dtinv;
^
[ 13%] Building CXX object src/CMakeFiles/aruco.dir/marker.cpp.obj
C:\aruco-2.0.5\src\marker.cpp: In member function 'void aruco::Marker::rotateXAx
is(cv::Mat&)':
C:\aruco-2.0.5\src\marker.cpp:299:22: error: 'M_PI' was not declared in this sco
pe
float angleRad = M_PI / 2;
^
src\CMakeFiles\aruco.dir\build.make:187: recipe for target 'src/CMakeFiles/aruco
.dir/marker.cpp.obj' failed
mingw32-make[2]: *** [src/CMakeFiles/aruco.dir/marker.cpp.obj] Error 1
CMakeFiles\Makefile2:116: recipe for target 'src/CMakeFiles/aruco.dir/all' faile
d
mingw32-make[1]: *** [src/CMakeFiles/aruco.dir/all] Error 2
Makefile:126: recipe for target 'all' failed
mingw32-make: *** [all] Error 2
C:\aruco-2.0.5\build>mingw32-make
Scanning dependencies of target aruco
[ 2%] Building CXX object src/CMakeFiles/aruco.dir/marker.cpp.obj
C:\aruco-2.0.5\src\marker.cpp: In member function 'void aruco::Marker::rotateXAx
is(cv::Mat&)':
C:\aruco-2.0.5\src\marker.cpp:299:22: error: 'M_PI' was not declared in this sco
pe
float angleRad = M_PI / 2;
^
src\CMakeFiles\aruco.dir\build.make:187: recipe for target 'src/CMakeFiles/aruco
.dir/marker.cpp.obj' failed
mingw32-make[2]: *** [src/CMakeFiles/aruco.dir/marker.cpp.obj] Error 1
CMakeFiles\Makefile2:116: recipe for target 'src/CMakeFiles/aruco.dir/all' faile
d
mingw32-make[1]: *** [src/CMakeFiles/aruco.dir/all] Error 2
Makefile:126: recipe for target 'all' failed
mingw32-make: *** [all] Error 2
I have also tried to do it with codeblocks but I get the exact same error.
The developer has released a new version 2.0.7 fixing this issue.
What I have done to have aruco:
download the .zip on sourceforge
unzip it
create a build folder in aruco-2.0.7
open cmake-gui configure and generate
go into your build folder
open a cmd window from there
type mingw32-make
The library should have compiled properly.
If omp.h is missing from your compiler, find the source code on the internet and add it to mingw in MinGW\include. You should be ready to go. Don't forget to add aruco to your path & reboot.
If you are using an ide, you will have to add this library since it is an external library but it is another issue.
Finally, you might have some issues regarding c++11. I am working on it. If someone knows how to allow it on mingw (I haven't find any understandable explanation so far)
I have a fortran subroutine, FortranShake, and a C++ main function, HandShakingTest.cpp.
I'm trying to call a fortran subroutine from CLR C++.
I'm getting two batches of errors. Let's call them ERROR(1) and ERROR(2). I'd really appreciate if you could help me understand why these errors are happening.
When I try to compile with the following:
cl /clr HandShakingTest.cpp
I get the following ERROR(1):
HandShakingTest.obj : error LNK2028: unresolved token (0A00030A) "extern "C" void __c
ecl FortranShake(int &)" (?FortranShake##$$J0YAXAAH#Z) referenced in function "int __
lrcall main(cli::array<class System::String ^ >^)" (?main##$$HYMHP$01AP$AAVString#Sys
em###Z)
HandShakingTest.obj : error LNK2019: unresolved external symbol "extern "C" void __cd
cl FortranShake(int &)" (?FortranShake##$$J0YAXAAH#Z) referenced in function "int __c
rcall main(cli::array<class System::String ^ >^)" (?main##$$HYMHP$01AP$AAVString#Syst
m###Z)
HandShakingTest.exe : fatal error LNK1120: 2 unresolved externals
I then used the following commands to compile instead:
ifort /c FortranShake.f //Which compiles fine
cl /c /clr HandShakingTest.cpp //compiles fine
cl /o test HandShakingTest.obj FortranShake.obj //ERROR(2) occurs
ERROR(2) consists of:
MSVCRT.lib(ti_inst.obj) : error LNK2005: "private: __thiscall type_info::type_info(cla
ss type_info const &)" (??0type_info##AAE#ABV0##Z) already defined in LIBCMT.lib(typin
fo.obj)
MSVCRT.lib(ti_inst.obj) : error LNK2005: "private: class type_info & __thiscall type_i
nfo::operator=(class type_info const &)" (??4type_info##AAEAAV0#ABV0##Z) already defin
ed in LIBCMT.lib(typinfo.obj)
MSVCRT.lib(merr.obj) : error LNK2005: __matherr already defined in LIBCMT.lib(_matherr
_.obj)
LINK : warning LNK4098: defaultlib 'MSVCRT' conflicts with use of other libs; use /NOD
EFAULTLIB:library
HandShakingTest.obj : error LNK2028: unresolved token (0A00030A) "extern "C" void __cd
ecl FortranShake(int &)" (?FortranShake##$$J0YAXAAH#Z) referenced in function "int __c
lrcall main(cli::array<class System::String ^ >^)" (?main##$$HYMHP$01AP$AAVString#Syst
em###Z)
HandShakingTest.obj : error LNK2019: unresolved external symbol "extern "C" void __cde
cl FortranShake(int &)" (?FortranShake##$$J0YAXAAH#Z) referenced in function "int __cl
rcall main(cli::array<class System::String ^ >^)" (?main##$$HYMHP$01AP$AAVString#Syste
m###Z)
libifcoremt.lib(for_main.obj) : error LNK2019: unresolved external symbol _MAIN__ refe
renced in function _main
test.exe : fatal error LNK1120: 3 unresolved externals
Here's the HandShakingTest.cpp:
#include "stdio.h"
#include <stdlib.h>
#include <Windows.h>
#using <System.DLL>
#using <System.Windows.Forms.DLL>
using namespace std;
using namespace System;
using namespace System::IO;
using namespace System::Diagnostics;
using namespace System::ComponentModel;
using namespace System::Collections;
using namespace System::Windows::Forms;
extern "C" {void FortranShake(int&);}
int main(array<System::String ^> ^args)
{
Process^ testHand = gcnew Process();
testHand->StartInfo->UseShellExecute = false;
testHand->StartInfo->RedirectStandardInput = true;
testHand->StartInfo->RedirectStandardOutput = true;
testHand->StartInfo->ErrorDialog = true;
int numDebug = 0;
String^ returnedDebug = "Nothing";
FortranShake(numDebug);
StreamReader^ FromHandProcess = testHand->StandardOutput;
StreamWriter^ ToHandProcess = testHand->StandardInput;
String^ Line;
Line = FromHandProcess ->ReadLine();
if (Line->Equals("Enter Hand") )
{
Console::WriteLine(L"Hand Started!");
}
ToHandProcess ->WriteLine(numDebug.ToString());
returnedDebug = FromHandProcess ->ReadLine();
MessageBox::Show(returnedDebug);
return 0;
}
Here is the Fortran Subroutine:
SUBROUTINE FortranShake(GP_DEBUG)
IMPLICIT DOUBLE PRECISION (A-H,O-Z)
INN = 5
WRITE(06,'(a)') 'Enter Hand'
READ(INN,*) GP_DEBUG
GP_DEBUG = GP_DEBUG + 55
WRITE(06,*) GP_DEBUG
RETURN
END
Your first error is actually a linker error - without the /c command line switch you are compiling and linking in one step. No Fortran code or object code has been provided.
Your second error is because:
You have specified (through omission) mismatching runtime libraries for the C++ and the Fortran. You need to decide whether you want to use static linking (the default for the current (as of today, but not necessarily as of next month...) release of Intel Fortran on windows) or dynamic linking (the default for the MS C++ compiler). Perhaps add /MD to the ifort command line, which specifies dynamic linking.
Without compiler options or directives to the contrary, the equivalent identifier for the Fortran procedure in C code as generated by that Fortran compiler is an upper case variant of the Fortran procedure's name - i.e. in the C++ code call the procedure FORTRANSHAKE. If you can write your Fortran code to the F2003 standard, you should use the C interoperability features of that language (BIND(C,...)) to control the C binding name of the Fortran procedure and ensure calling conventions, etc align.
The dummy argument of the Fortran subroutine has the DOUBLE PRECISION type specifier, which is equivalent to double in the C++ for this combination of compilers, not int. Again, F2003 introduces features that can make this alignment of argument types more robust.