Set RPATH on Linux, to avoid needing to futz w/ LD_LIBRARY_PATH.

This may need to be adjusted for distro packaging. >_>

CMakeLists.txt

@@ -20,6 +20,10 @@ include_directories(include)
 
 add_subdirectory(rust_part)
 
+set(CMAKE_SKIP_BUILD_RPATH  FALSE)
+set(CMAKE_BUILD_WITH_INSTALL_RPATH TRUE)
+set(CMAKE_INSTALL_RPATH $ORIGIN)
+
 # Project
 add_executable("${PROJECT_NAME}" "src/main.cpp" "src/pathtools_excerpt.cpp" "src/pathtools_excerpt.h" "src/matrix_utils.cpp" "src/matrix_utils.h" "src/bridge.cpp" "src/bridge.hpp" "src/setup.cpp" "src/setup.hpp" "ProtobufMessages.proto" "src/cxx_test.cpp")
 target_link_libraries("${PROJECT_NAME}" PRIVATE "${OPENVR_LIB}" fmt::fmt protobuf::libprotobuf simdjson::simdjson rust_part)