g++

问题 This question already has answers here : Closed 9 years ago . Possible Duplicates: Is this a legitimate C++ code? “C subset of C++” -> Where not ? examples ? Could anybody come up with a piece of code that compiles with gcc or any other C compiler, and doesn't compile g++ or any other C++ compiler? UPDATE: I don't mean just keywords UPDATE2: Thank you All for answers. Apparently moderators were less enthusiastic than I was about subtle differences between C and C++. UPDATE3: to moderators:

问题 I have a c++ program where I want to compile out std::exit and use my own, i.e. via: -Dexit=myExit However, I run into this issue: In file included from /usr/include/c++/7/ext/string_conversions.h:41:0, from /usr/include/c++/7/bits/basic_string.h:6352, from /usr/include/c++/7/string:52, from /usr/include/c++/7/bits/locale_classes.h:40, from /usr/include/c++/7/bits/ios_base.h:41, from /usr/include/c++/7/ios:42, from /usr/include/c++/7/istream:38, from /usr/include/c++/7/sstream:38, from tests

问题 I'm trying to compile code using SDL, I can't really post much of the code here but I can do my best to answer questions about it. The problem occurs when compiling the view code and trying to link the SDL libraries. g++ -o test test.c -lSDL2main -lSDL2 gives me an error /usr/bin/ld: cannot find -lSDL2main I know my SDL install is okay because if I leave out the link to SDL2main it compiles fine and runs fine. The problem is there is other code that needs SDL2main. I've poured through my file

问题 I am trying to link v8's static library to a shared library using the following cmake command add_library(v8jni SHARED ${THIRDPARTY_LIB_PATH}/shared/v8jni.cpp) target_link_libraries(v8jni log -Wl,--whole-archive v8_inspector v8_base v8_snapshot v8_libplatform v8_libsampler v8_libbase -Wl,--no-whole-archive) libv8jni.so is generated successfully. But it's useless because all the v8 function are marked as local. nm -C libv8_base.a | grep v8::HandleScope 00000000 T v8::HandleScope::Initialize(v8

问题 According to this question, the use of threadprivate with openmp is problematic. Here is a minimum (non-)working example of the problem: #include"omp.h" #include<iostream> extern const int a; #pragma omp threadprivate(a) const int a=2; void my_call(){ std::cout<<a<<std::endl; }; int main(){ #pragma omp parallel for for(unsigned int i=0;i<8;i++){ my_call(); } } This codes compiles with intel 15.0.2.164 but not with gcc 4.9.2-10. gcc says: g++ -std=c++11 -O3 -fopenmp -O3 -fopenmp test.cpp -o

问题 Hi I've a program written in C++. When I compile it in Mac terminal with g++ compiler, it compiles and runs. But when I compile the same C++ program in Ubuntu terminal with g++ compiler, it Fails. I don't know why it happens. g++ compiler version in Ubuntu is 4.7.3. Here is my code sample #include <iostream> using namespace std; #define IXSIZE 400 #define IYSIZE 400 #define IZSIZE 3 void putbyte(FILE *outf, unsigned char val) { unsigned char buf[1]; buf[0] = val; fwrite(buf,1,1,outf); } void

问题 I am trying to use std::experimental::detect_or_t from <experimental/type_traits> . What compiler, option, version or library do I need to compile the following example from http://en.cppreference.com/w/cpp/experimental/is_detected ? #include <experimental/type_traits> #include <cstddef> template<class T> using diff_t = typename T::difference_type; template <class Ptr> using difference_type = std::experimental::detected_or_t<std::ptrdiff_t, diff_t, Ptr>; struct Meow { using difference_type =

问题 I'm going to use a small example for reference. Consider a project with: inner_definitions.o : inner_definitions.cpp inner_definitions.h gcc $^ -o $@ inner_class_1.o : inner_class_1.cpp inner_class_1.h inner_definitions.h gcc $^ -o $@ inner_class_2.o : inner_class_2.cpp inner_class_2.h inner_definitions.h gcc $^ -o $@ outer_class.o : outer_class.cpp outer_class.h inner_class_1.h inner_class_2.h gcc $^ -o $@ executable.o : executable.cpp executable.h outer_class.h gcc $^ -o $@ executable : __

问题 I'm developing linux(ubuntu) c++ project from Visual Studio 2017. I want to integrate googletest into my code. I have installed googletest and run test example according following tutorial. Everything works fine when I run it from bash terminal using cmake. Now I need to run it using VS. For that I need to specify path to /usr/lib/libgtest.a from VS. I added /usr/lib into Linker->General->Additional Library Directories and added libgtest.a into Linker->Input->Additional Dependencies . But

问题 I'm using Kdevelop for a simple C++ project. I know that Kdevelop uses CMake to build the project, but the only thing that I known about CMake is that if I add a new .cpp source file in my project, I have to add it also in CMakeLists.txt . Now I'm trying to enable tha gcc compiler warnings (i.e. compiling with g++ -Wall ... ). Does Kdevelop have a compiler settings section, or I have to edit directly the Makefile or another CMake settings file? 回答1: You can add compiler flags in CMake by