Have you tried set_property(TARGET cpp-netlib_pic PROPERTY POSITION_INDEPENDENT_CODE ON)? I think you must specify the value ON for it to work.
On Sun, Aug 28, 2016 at 4:28 PM, Steve Lorimer <steve.lori...@gmail.com> wrote: > I'm trying to create a static library with -fPIC specified. > > add_library(cpp-netlib_pic > STATIC > ${SRCS}) > set_property(TARGET cpp-netlib_pic PROPERTY POSITION_INDEPENDENT_CODE) > > This doesn't work. > > The library (cpp-netlib_pic) is built without the -fPIC flags. > > Other targets which link against cpp-netlib_pic have -fPIC added to their > compiler flags, but the linking fails because cpp-netlib_pic didn't. > > Here foo will have -fPIC added: > > add_library(foo > SHARED > ${SRCS}) > target_link_libraries(foo cpp-netlib_pic) > > > I've proved this to myself with make VERBOSE=1 > > [ 87%] Building CXX object > third_party/cpp-netlib/CMakeFiles/cpp-netlib_pic.dir/src/server_request_parsers_impl.cpp.o > > /usr/bin/c++ ... -std=c++14 -Werror -Wall -Wextra ... -o > CMakeFiles/cpp-netlib_pic.dir/src/server_request_parsers_impl.cpp.o -c > .../third_party/cpp-netlib/src/server_request_parsers_impl.cpp > > Note no -fPIC here. > > When building a target which uses cpp-netlib_pic -fPIC appears: > > [ 93%] Building CXX object foo.cc.o > /usr/bin/c++ ... -std=c++14 -Werror -Wall -Wextra ... -fPIC ... -o > CMakeFiles/foo_shared_lib.dir/foo.cc.o -c .../foo/foo.cc > > How can I configure CMake to build the 1st library (cpp-netlib_pic) with > -fPIC? > > -- > > Powered by www.kitware.com > > Please keep messages on-topic and check the CMake FAQ at: > http://www.cmake.org/Wiki/CMake_FAQ > > Kitware offers various services to support the CMake community. For more > information on each offering, please visit: > > CMake Support: http://cmake.org/cmake/help/support.html > CMake Consulting: http://cmake.org/cmake/help/consulting.html > CMake Training Courses: http://cmake.org/cmake/help/training.html > > Visit other Kitware open-source projects at > http://www.kitware.com/opensource/opensource.html > > Follow this link to subscribe/unsubscribe: > http://public.kitware.com/mailman/listinfo/cmake -- Powered by www.kitware.com Please keep messages on-topic and check the CMake FAQ at: http://www.cmake.org/Wiki/CMake_FAQ Kitware offers various services to support the CMake community. For more information on each offering, please visit: CMake Support: http://cmake.org/cmake/help/support.html CMake Consulting: http://cmake.org/cmake/help/consulting.html CMake Training Courses: http://cmake.org/cmake/help/training.html Visit other Kitware open-source projects at http://www.kitware.com/opensource/opensource.html Follow this link to subscribe/unsubscribe: http://public.kitware.com/mailman/listinfo/cmake