AIX: Not enough room for XCOFF editor to set install_rpath

Respected community members,

Hi,

In AIX currently, if we CMAKE_INSTALL_RPATH="/Aditya/Aditya" currently in AIX, it concatenates the install_rpath to the build_rpath.

For example the LIBPATH during build is

# dump -Hov ./libhello_shared.a
/opt/freeware/lib/gcc/powerpc-ibm-aix7.2.0.0/10:/opt/freeware/lib:/usr/lib:/lib:::::::::::::

But during install we get,

Set runtime path of "/usr/local/lib/libhello_shared_no_so.a" to "/aditya/aditya:/opt/freeware/lib/gcc/powerpc-ibm-aix7.2.0.0/10:/opt/freeware/lib:/usr/lib:/lib"

One thing I observed in Linux is that if a user gives CMAKE_INSTALL_RPATH="/Aditya/Aditya" then it simply keeps it as /Aditya/Aditya not anything else. We would like to keep this the same for AIX.

I want to fix this in SetLibpath in cmXCOFF.cxx

The second problem we have is the cmake policy CMP0095 https://cmake.org/cmake/help/latest/prop_tgt/INSTALL_RPATH.html

This $ORIGIN is not parsed in AIX. Also, this $ORIGIN is given preference over CMAKE_INSTALL_RPATH which causes problems in certain projects like abseil-cpp since $ORIGIN is not replaced in binary's blibpath.

One example of not parsing is as shown below

Set runtime path of "/home/aditya/abseil-cpp-20240722.0/install/lib64/libabsl_bad_any_cast_impl.a" to "$ORIGIN:/opt/freeware/lib/pthread:/opt/freeware/lib64:/opt/freeware/lib:/usr/lib:/opt/freeware/lib/gcc/powerpc-ibm-aix7.2.0.0/10/pthread/ppc64:/opt/freeware/lib/pthread/ppc64:/opt/freeware/lib/gcc/powerpc-ibm-aix7.2.0.0/10:/lib"

Kindly let me know what you think of these two issues and how we can design and solve this problem for CMake and AIX.

Regards,