g++

问题 This question already has answers here : Running CMake on Windows (2 answers) Closed 1 year ago . I am on Windwos trying to get Mingw-w64 to work with CMake since my MSVC is somehow not working at all (using Windows10 64bit. Basically I add the arguments -DCMAKE_CXX_COMPILER="C:/MinGW-w64/mingw64/bin/g++.exe" -DCMAKE_C_COMPILER="C:/MinGW-w64/mingw64/bin/gcc.exe" to my call to CMake which sets the corresponding compiler. However I get these errors: -- The C compiler identification is unknown -

问题 I've been trying to code something using the new experimental feature "modules-ts" that will be included in c++20. I've cloned the gcc branch (found here: https://gcc.gnu.org/wiki/cxx-modules), and I'm trying to follow that tutorial (on the link) using modules-ts but an g++ error is preventing me from doing that: g++: error: unrecognized command-line option ‘-fmodules-ts’ I tried to see the version of g++, to make sure that is not reading from another previous version. And the answer is: g++

问题 I've been trying to code something using the new experimental feature "modules-ts" that will be included in c++20. I've cloned the gcc branch (found here: https://gcc.gnu.org/wiki/cxx-modules), and I'm trying to follow that tutorial (on the link) using modules-ts but an g++ error is preventing me from doing that: g++: error: unrecognized command-line option ‘-fmodules-ts’ I tried to see the version of g++, to make sure that is not reading from another previous version. And the answer is: g++

问题 Suppose I have N different integral values known at compile time, V_1 through V_N. Consider the following structures: const int x = foo(); switch(x) { case V_1: { /* commands for V_1 which don't change x */ } break; case V_2: { /* commands for V_1 which don't change x */ } break; /* ... */ case V_N: { /* commands for V_1 which don't change x */ } break; } versus const int x = foo(); if (x == V_1) { /* commands for V_1 which don't change x */ } else if (x == V_2) { /* commands for V_2 which

问题 I'm trying to compile and strip a very simple programm in C++ with the g++ compiler (4.6.0 on Mac OSX). But while compiling i get an warning. source code: #include </usr/local/Cellar/gcc/4.6.0/gcc/include/c++/4.6.0/iostream> int main(){ std::cout << ("Hello World\n") ; } Terminal code: g++ hello.cc -Wall -std=c++0x -s /* or an alternative: */ g++ hello.cc -Wall -std=c++0x -o test -Wl,-s Compiler warning: ld: warning: option -s is obsolete and being ignored Somebody any idea's about this weird

问题 I'm trying to compile and strip a very simple programm in C++ with the g++ compiler (4.6.0 on Mac OSX). But while compiling i get an warning. source code: #include </usr/local/Cellar/gcc/4.6.0/gcc/include/c++/4.6.0/iostream> int main(){ std::cout << ("Hello World\n") ; } Terminal code: g++ hello.cc -Wall -std=c++0x -s /* or an alternative: */ g++ hello.cc -Wall -std=c++0x -o test -Wl,-s Compiler warning: ld: warning: option -s is obsolete and being ignored Somebody any idea's about this weird

问题 For the last couple of hours I have been trying to get a basic OpenCV program to work in my Eclipse Mars IDE. The program consists of the following main.cpp: #include <opencv2/core/core.hpp> #include <opencv2/highgui/highgui.hpp> #include <iostream> using namespace cv; using namespace std; int main( int argc, char** argv ) { if( argc != 2) { cout <<" Usage: display_image ImageToLoadAndDisplay" << endl; return -1; } Mat image; image = imread(argv[1], CV_LOAD_IMAGE_COLOR); // Read the file if(!

问题 For the last couple of hours I have been trying to get a basic OpenCV program to work in my Eclipse Mars IDE. The program consists of the following main.cpp: #include <opencv2/core/core.hpp> #include <opencv2/highgui/highgui.hpp> #include <iostream> using namespace cv; using namespace std; int main( int argc, char** argv ) { if( argc != 2) { cout <<" Usage: display_image ImageToLoadAndDisplay" << endl; return -1; } Mat image; image = imread(argv[1], CV_LOAD_IMAGE_COLOR); // Read the file if(!

问题 For the last couple of hours I have been trying to get a basic OpenCV program to work in my Eclipse Mars IDE. The program consists of the following main.cpp: #include <opencv2/core/core.hpp> #include <opencv2/highgui/highgui.hpp> #include <iostream> using namespace cv; using namespace std; int main( int argc, char** argv ) { if( argc != 2) { cout <<" Usage: display_image ImageToLoadAndDisplay" << endl; return -1; } Mat image; image = imread(argv[1], CV_LOAD_IMAGE_COLOR); // Read the file if(!

问题 For the last couple of hours I have been trying to get a basic OpenCV program to work in my Eclipse Mars IDE. The program consists of the following main.cpp: #include <opencv2/core/core.hpp> #include <opencv2/highgui/highgui.hpp> #include <iostream> using namespace cv; using namespace std; int main( int argc, char** argv ) { if( argc != 2) { cout <<" Usage: display_image ImageToLoadAndDisplay" << endl; return -1; } Mat image; image = imread(argv[1], CV_LOAD_IMAGE_COLOR); // Read the file if(!