Linux上的共享库和-fPIC错误

时间:2014-10-24 13:43:39

标签: c++ linux cmake shared-libraries fpic

我正在尝试使用使用Cmake创建的Makefile在Linux中编译共享库,但是运行make我会收到以下错误:

   Linking CXX shared library libcpp-lib.so
   /usr/bin/ld: /home/davide/Desktop/boost_1_55_0/stage/lib/libboost_system.a(error_code.o): relocation R_X86_64_32 against .rodata.str1.1 can  not be used when making a shared object; recompile with -fPIC
   /home/davide/Desktop/boost_1_55_0/stage/lib/libboost_system.a: could not read symbols:   Bad value
   collect2: ld returned 1 exit status
   make[2]: *** [libcpp-lib.so] Error 1
   make[1]: *** [CMakeFiles/cpp-lib.dir/all] Error 2
   make: *** [all] Error 2

我在CMakeLists.txt中提供以下命令,以便说我想要一个共享(.so)库:

add_library(cpp-lib SHARED ${CPP_FILES})

为了避免上面显示的-fPIC错误,还需要指定什么?

提前多多感谢

1 个答案:

答案 0 :(得分:6)

需要使用-fPIC编译boost库: 请查看:How to compile static library with -fPIC from boost.python

尝试在项目中通过cmake by添加编译器标志:

set (CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -fPIC")
set (CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -fPIC")