tree 70529a647d0709e09a9bea78409adda1ed0b7f43
parent 9fb38f849e8fa2adb77c1795b77ee1f899d31e4a
author Nathan Rossi <nathan@nathanrossi.com> 1559804468 +1000
committer Nathan Rossi <nathan@nathanrossi.com> 1559804468 +1000

libtrellis/CMakeLists.txt: Use GNUInstallDirs to determine install paths

Use the GNUInstallDirs include provided by CMake to auto detect target
install paths for the target system. This allows for building natively
on the same host as well as enabling a distro to override the paths or
for cross compiling to override the paths for the target distro/system.

This removes the need to manually detect the 'lib64' directory, and also
fixes the issues with using 'FIND_LIBRARY_USE_LIB64_PATHS' which is
always true on targets other than debian (even if those targets do not
use the 'lib64' path by default).

Additionally this change calculates the relative path between bindir and
libdir in order to populate the rpath information into the built
binaries for supporting portable execution.

Signed-off-by: Nathan Rossi <nathan@nathanrossi.com>