函式庫的rpath

linker設定rpath的選項範例如下

gcc -Wl,-rpath=/opt/nvidia/deepstream/deepstream-6.4/lib test.cpp

RPATH有一個特殊識別符號$ORIGIN，表示執行檔的所在目錄

gcc -Wl,-rpath='$ORIGIN/../lib' test.cpp

查看函式庫的rpath

readelf -d libnvds_rest_server.so |head -20

或是

objdump -x libnvds_rest_server.so |grep 'R.*PATH'

CMake使用兩個變數來控制RPATH：INSTALL_RPATH和BUILD_RPATH，install步驟的rpath是INSTALL_RPATH

SET_TARGET_PROPERTIES(nvds_rest_server
    PROPERTIES INSTALL_RPATH "/opt/nvidia/deepstream/deepstream-6.4/lib")

cmake的另一個設定RPATH的方法
https://discourse.cmake.org/t/library-rpath-resolution/887/7
SET(CMAKE_SKIP_BUILD_RPATH FALSE)
SET(CMAKE_BUILD_WITH_INSTALL_RPATH TRUE)
SET(CMAKE_INSTALL_RPATH “${ORIGIN}”)

參考:
https://www.cnblogs.com/chanyuantiandao/p/16553199.html