Linux和-fPIC上的共享库错误 [英] Shared library on Linux and -fPIC error
问题描述
我试图在Linux中使用由Cmake创建的Makefile编译共享库,但运行make我获得以下错误:
I am trying to compile a shared library in Linux using a Makefile created with Cmake, but running make I obtain the following error:
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, shared(.so)library:
I provide the following command in the CMakeLists.txt in order to say that I want a shared (.so) library:
add_library(cpp-lib SHARED $ {CPP_FILES})
我还需要指定什么来避免上面显示的-fPIC错误?
What else do I need to specify in order to avoid the -fPIC error shown above?
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Thanks a lot in advance
推荐答案
boost库需要使用-fPIC编译:
请看看:如何从-fPIC编译静态库从boost.python
The boost libraries needs to be compiled using -fPIC: Please have a look at: How to compile static library with -fPIC from boost.python
尝试通过cmake在您的项目中添加编译器标志:
Try to add compiler flags by cmake by in your project:
set (CMAKE_C_FLAGS "$CMAKE_C_FLAGS -fPIC")
set (CMAKE_CXX_FLAGS "$CMAKE_CXX_FLAGS -fPIC")
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