RPATH in shared library dangers

Example shared library loading inconsistency with RPATH embedded in libraries. Recommendation:

• Do not rely on LD_LIBRARY_PATH since it has global side effects.
• Use RPATH (or RUNPATH) within executables.
• Strip RPATH (and RUNPATH) from shared libraries.

To build

CMake users

mkdir build
pushd build
cmake ..
make
popd

SCons users

scons

Run the example

To show the shared library loading inconsistency with RPATH embedded in libraries:

# Within the build/src directory
pushd build/src
../../src/tests/show_ld_loading.sh
popd

Clean

rm -rf build