Linking g++ 4.8 to libstdc++

by

When you link with your own gcc you need to add an extra run-time linker search path(s) with -Wl,-rpath,$(PREFIX)/lib64 so that at run-time it finds the shared libraries corresponding to your gcc.

I normally create a wrapper named gcc and g++ in the same directory as gcc-4.8 and g++-4.8 which I invoke instead of gcc-4.8 and g++-4.8, as prescribed in Dynamic linker is unable to find GCC libraries:

#!/bin/bash
exec ${0}SUFFIX -Wl,-rpath,PREFIX/lib64 "$@"

When installing SUFFIX and PREFIX should be replaced with what was passed to configure:

cd ${PREFIX}/bin && rm -f gcc g++ c++ gfortran
sed -e 's#PREFIX#${PREFIX}#g' -e 's#SUFFIX#${SUFFIX}#g' gcc-wrapper.sh > ${PREFIX}/bin/gcc
chmod +x ${PREFIX}/bin/gcc
cd ${PREFIX}/bin && ln gcc g++ && ln gcc c++ && ln gcc gfortran

(gcc-wrapper.sh is that bash snippet).

The above solution does not work with some versions of libtool because g++ -Wl,... -v assumes linking mode and fails with an error.

A better solution is to use specs file. Once gcc/g++ is built, invoke the following command to make gcc/g++ add -rpath to the linker command line (replace ${PREFIX}/lib64 as necessary):

g++ -dumpspecs | awk '/^\*link:/ { print; getline; print "-rpath=${PREFIX}/lib64", $0; next } { print }' > $(dirname $(g++ -print-libgcc-file-name))/specs

More Related Contents:

  1. Compiling multithread code with g++
  2. Linking libstdc++ statically: any gotchas?
  3. Install gcc on linux with no root privilege
  4. Forcing or preventing use of a particular minor version of libstdc++
  5. Undefined reference to vtable
  6. What is the difference between g++ and gcc?
  7. How does #include work in C++? [duplicate]
  8. What are the GCC default include directories?
  9. VS Code will not build c++ programs with multiple .ccp source files
  10. Compiling a C++ program with GCC
  11. C++ standard library and Boehm garbage collector
  12. How to create a static library with g++?
  13. Compilation fails with “relocation R_X86_64_32 against `.rodata.str1.8′ can not be used when making a shared object”
  14. 😃 (and other Unicode characters) in identifiers not allowed by g++
  15. When is it necessary to use the flag -stdlib=libstdc++?
  16. C++ new operator thread safety in linux and gcc 4
  17. When including header files, is the path case sensitive?
  18. Proper way to create unique_ptr that holds an allocated array
  19. Linking to MSVC DLL from MinGW
  20. request for member `…’ is ambiguous in g++
  21. C++ project compiled with modern compiler, but linked against outdated libstdc++
  22. C++11: How to alias a function? [duplicate]
  23. GCC: Difference between -O3 and -Os
  24. Why “initializer-string for array of chars is too long” compiles fine in C & not in C++?
  25. version `CXXABI_1.3.8′ not found (required by …) [duplicate]
  26. Why can’t I use with g++ 4.9.2?
  27. Why are designated initializers not implemented in g++
  28. Can I make GCC warn on passing too-wide types to functions?
  29. generates same number in Linux, but not in Windows
  30. How to assert if a std::mutex is locked?

Leave a Comment