gcc4.6 | 易学教程

gcc 4.6 on mac, how do I get it to work?

阅读更多关于 gcc 4.6 on mac, how do I get it to work?

问题 I am having problems getting gcc 4.6 to run on Mac 10.8.5. My experience with such matters is very limited and I have been searching around and trying different things to get this to work, but to no avail. I am sorry if the answer to this problem is really simple (I actually hope that it is!) This is my problem: I need to run a bit of software to do an analysis, called Bayescan. This bit of software requires a library found as part of gcc4.6 to run on a MacOSX. They say so on their

Can you mix c++ compiled with different versions of the same compiler

阅读更多关于 Can you mix c++ compiled with different versions of the same compiler

问题 For example could I mix a set of libraries that have been compiled in say GCC-4.6 with GCC-4.9. I'm aware different compilers "breeds" such as VS cannot be with MinGW but can different generations of the same compiler? Are issues likely to occur? If so what? 回答1: Different generations of the same compiler sometimes can be compatible with each other, but not always. For example, GCC 4.7.0 changed its C/C++ ABI, meaning libraries compiled with 4.7.0+ and 4.7.0- are not likely to be compatible

Specialize function if argument has member variable

阅读更多关于 Specialize function if argument has member variable

问题 I have a function for error reporting that is templated because it can report errors for many different message classes: template <typename MSG> void reportErr(const MSG& msg) { std::cout << "ERROR: " << msg.error << std::endl; } However, some types of message have more detailed error that can be reported or other specialized error reporting, e.g. template<> void reportErr(const SpecificMsg& msg) { std::cout << "ERROR: " << msg.error; std::cout << ", details: " << msg.details << std::endl; }

Travis-CI fails on symbol lookup error, works fine elsewhere

阅读更多关于 Travis-CI fails on symbol lookup error, works fine elsewhere

问题 I have a library (technically a Ruby extension) called NMatrix which is written in C and C++. It uses C++ templates to manage different types, e.g., Rational128 versus Rational64 . It also has RubyObject and Complex64 and Complex128 . I force these template versions to be built by creating some inside an object file -- in a function that is called from the library entry point. It works just fine in GCC 4.7 , but when I compile on Travis-CI, it encounters an undefined symbol error at run-time:

compiler error expected nested-name specifier

阅读更多关于 compiler error expected nested-name specifier

I am the OP for the question: Extending a class in which I received an excellent answer. However, as I try to compile the code (reworked slightly for my project) I received the following message (line no. changed to reflect following sample code): except.h: | 09 | expected nested-name-specifier before ‘handler_t1’ along with many more which seem to stem from this line. I am brand new to C++, and my research into the answer (and the forthcoming problem) has yielded this fact: Microsoft's compiler seems to accept the code, but standards compliant ones do not. The code as I currently have it is

What is this GCC error on Linux, and how do I solve it? gcc: internal compiler error: Illegal instruction (program as)

阅读更多关于 What is this GCC error on Linux, and how do I solve it? gcc: internal compiler error: Illegal instruction (program as)

问题 I type gcc hello.c and this appears: gcc: internal compiler error: Illegal instruction (program as) Please submit a full bug report, with preprocessed source if appropriate. See <file:///usr/share/doc/gcc-4.6/README.Bugs> for instructions. hello.c is just: int main() { return 0; } I can't think of any way to make it simpler! (The same happened with printf in there.) So: how do you fix this? I'm on Raspian, on Raspberry Pi. Edit gcc -v gives Using built-in specs. COLLECT_GCC=gcc COLLECT_LTO

Can you mix c++ compiled with different versions of the same compiler

阅读更多关于 Can you mix c++ compiled with different versions of the same compiler

For example could I mix a set of libraries that have been compiled in say GCC-4.6 with GCC-4.9. I'm aware different compilers "breeds" such as VS cannot be with MinGW but can different generations of the same compiler? Are issues likely to occur? If so what? Different generations of the same compiler sometimes can be compatible with each other, but not always. For example, GCC 4.7.0 changed its C/C++ ABI , meaning libraries compiled with 4.7.0+ and 4.7.0- are not likely to be compatible with each other (so in your example, the library compiled with 4.6 will not be compatible with the library