On 28/11/12 23:15, Johan Tibell wrote:
What does gcc do? Does it link statically or dynamically by default? Does it depend on if it can find a dynamic version of libraries or not?
If it finds a dynamic library first, it links against that. Unlike GHC, with gcc you do not have to choose at compile-time whether you are later going to link statically or dynamically, although you do choose at compile-time to make an object for a shared library (-fPIC is needed). When gcc links dynamically, it assumes the binary will be able to find its libraries at runtime, because they're usually in /lib or /usr/lib. Apps that ship with their own shared libraries and don't install into the standard locations typically have a wrapper script that sets LD_LIBRARY_PATH, or they use RPATH with $ORIGIN (a better solution). Cheers, Simon