libstdc++

I'm trying something spooky here. I'm trying to write C++ programs, compiled with GNU's g++, but without a dependency on libstdc++ :) but it seems that I need that for even the most basic things need it. A libstdc++ with a configurable feature set would be acceptable. The command I use is g++ -nodefaultlibs -fno-rtti -fno-exceptions -lc Without libstdc++, I get: undefined reference to `operator delete(void*)' undefined reference to `operator new(unsigned int)' undefined reference to `vtable for __cxxabiv1::__class_type_info' undefined reference to `vtable for __cxxabiv1::__si_class_type_info'

This question already has an answer here: std::expf and std::logf not recognized by gcc 7.2.0 4 answers Based on the discussion here, I have reported a bug to the Ubuntu developers. When compiling the following sample c++ program: #include <cmath> #include <stdio.h> int main() { printf("%f\n", std::cosf(0.0f)); } I get the following error message: error: ‘cosf’ is not a member of ‘std’ Including math.h and using the non-namespaced version works fine. What is going on? I am using g++ 8.3.0-6ubuntu1 on Ubuntu 19.04. I am building with g++ --std=c++17 test.cpp That version of the library (

We want to create one shared library (.so) to target all distributions, including old ones. The code is written in C++ and uses C++11 features, so the compiler must be at least gcc 4.7. We noticed that if we compile our code on a Linux machine with gcc 4.7.2 installed (e.g., Ubuntu 12.10) then the .so produced has “version 1 (GNU/Linux)” while on older os (e.g., CentOS 5.6) the version is “version 1 (SYSV)” – and libraries with the GNU/Linux newer version cannot be used on older os. So we tried the approach of installing gcc 4.7 on the CentOS 5.6 machine, compile our code with this compiler

I have an OS X 10.6 Mac I'm using as my dev machine. The program I wrote works perfectly on the dev machine. However, when I tried to run it on an OS X 10.5 (not sure if that's relevant) test machine, it crashes on launch. This is the error I'm getting: Process: MyApp[25908] Path: /Applications/MyApp.app/Contents/MacOS/MyApp Identifier: MyApp Version: ??? (???) Code Type: X86 (Native) Parent Process: launchd [109] Interval Since Last Report: 17392106 sec Crashes Since Last Report: 735 Per-App Interval Since Last Report: 0 sec Per-App Crashes Since Last Report: 8 Date/Time: 2010-08-14 07:50:09

I have an unordered_map<Block, int> with Block being a simple struct defined as follows: struct Block { size_t start; size_t end; bool operator==(const Block& b) const { return start == b.start && end == b.end; } }; namespace std { template<> struct hash<Block> { size_t operator()(const Block& b) const { return b.start; } }; } When trying to access the map, I do get the following error message in gdb (same for both g++ 4.7.1 as well as clang++ 3.1): Program received signal SIGFPE, Arithmetic exception. 0x0000000000401e0b in std::__detail::_Mod_range_hashing::operator() (this=0x7fffffffd8e0, _

I recently updated my gcc version on CentOS from 4.7 to 5.4, but now I am getting the following error when I compile my program /lib64/libstdc++.so.6: version `GLIBCXX_3.4.21' not found I found some solutions , but I am still not able to fix the issue. These are the paths I found with whereis gcc gcc: /usr/bin/gcc /usr/lib/gcc /usr/local/bin/gcc /usr/local/lib/gcc /usr/libexec/gcc /usr/share/man/man1/gcc.1.gz and used this libstdc package for CentOS. Try export LD_LIBRARY_PATH=/usr/local/lib:/usr/lib:/usr/local/lib64:/usr/lib64 I didn't have sudo access to my CentOS machine, so I installed gcc