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In this article, we have explored the reason behind the C++ compilation error "fatal error: bits/c++config.h: No such file or directory" and presented the fix for resolving the error.
Table of contents:
- Error: fatal error: bits/c++config.h
- Fix 1: Install G++
- Fix 2: Use GCC
- Fix 3: Add include paths
Error: fatal error: bits/c++config.h
On compiling a C++ code with G++, one may face a compilation error. The compilation command will be as follows:
The compilation error is as follows:
/usr/include/c++/5/cstring:41:28: fatal error: bits/c++config.h: No such file or directory compilation terminated.
The issue is with the compiler as it is unable to find the mentioned header file bits/c++config.h which should be available by default.
Fix 1: Install G++
The first fix is to reinstall the multilib version of G++ which should work fine. We shall update the system repository so that the latest G++ version is installed.
sudo add-apt-repository ppa:ubuntu-toolchain-r/test sudo apt-get update sudo apt-get install g++-multilib
To install a specific version of G++ multilib compiler, use the following command:
sudo apt-get install g++-5-multilib
Fix 2: Use GCC
Another fix will be to use a working GCC compiler and enable the flag lstdc++ to compile C++ code with a C compiler. Replace g++ with "gcc -lstdc++".
gcc -lstdc++ code.c
Fix 3: Add include paths
Add the following include path in G++ compiler as the header file resides there:
Check if the header file is available in path using ls command:
ls /usr/include/c++/5/i486-linux-gnu OR ls /usr/include/c++/5/i686-linux-gnu
The compilation command will be as follows:
g++ -I/usr/include/c++/5/i486-linux-gnu code.c OR g++ -I/usr/include/c++/5/i686-linux-gnu code.c
With this article at OpenGenus, we have resolved the error "fatal error: bits/c++config.h: No such file or directory". Continue your development.