I'm interested in statically linking PROJ to a library created with pybind11.
but, I get error by cmake.
Why am I getting this error and how can I fix it?
My CMakeLists.txt is this.
cmake_minimum_required(VERSION 3.4)
project(myearth LANGUAGES CXX)
add_subdirectory(pybind11)
pybind11_add_module(myearth MyEarth.cpp)
include_directories(${CMAKE_SOURCE_DIR}/PROJ/include)
add_library(proj4 STATIC IMPORTED)
set_target_properties(proj4 PROPERTIES IMPORTED_LOCATION ${CMAKE_SOURCE_DIR}/PROJ/lib/libproj.a)
target_link_libraries(myearth PRIVATE proj4)
CMake Error.
I think fPIC option is for shared library. so, libproj.a is not necessary this option because this is static library.
(venv) ~/Projects/LinkLibTest/MySample/build$ make
[ 50%] Building CXX object CMakeFiles/myearth.dir/MyEarth.cpp.o
[100%] Linking CXX shared module myearth.cpython-36m-x86_64-linux-gnu.so
/usr/bin/ld: ../PROJ/lib/libproj.a(proj_4D_api.o): relocation R_X86_64_PC32 against symbol `pj_errno' can not be used when making a shared object; recompile with -fPIC
/usr/bin/ld: final link failed: bad value
collect2: error: ld returned 1 exit status
make[2]: *** [CMakeFiles/myearth.dir/build.make:98: myearth.cpython-36m-x86_64-linux-gnu.so] Error 1
make[1]: *** [CMakeFiles/Makefile2:100: CMakeFiles/myearth.dir/all] Error 2
make: *** [Makefile:91: all] Error 2
(venv) ~/Projects/LinkLibTest/MySample/build$
I created libproj.a by the following command.
$ ./configure --prefix=/output --disable-shared
$ sudo make
$ sudo make install
Linux Mint 20.3 64bit
CMake v3.22.2
PROJ v5.2.0 (https://proj.org/)
Python v3.6.8
Thank you.
Shared libraries must have position independent code, but your version of PROJ was built without it; you will have to rebuild PROJ with PIC.
$ ./configure --prefix=/output --with-pic
Related
Below is the CmakeLists file that I'm using. I'm using the linker flags from eclipse as it seems to build in eclipse properly.
project(new1 LANGUAGES CXX C)
set(CMAKE_VERBOSE_MAKEFILE ON)
set(CMAKE_CXX_STANDARD 14)
# Compiler options for compiling MinGW targets.
set(CMAKE_C_FLAGS_DEBUG "-D_WIN32_WINNT=0x0601 -DprojCOVERAGE_TEST=0 -fmessage-length=0 -Wcast-qual")
#-------------------------------------------------------------
# Linker options for Linking MinGW targets.
set(CMAKE_EXE_LINKER_FLAGS "-Xlinker -lwinmm")
#-------------------------------------------------------------
include_directories(FreeRTOS/Source/include
FreeRTOS/Source/portable/MSVC-MingW
/)
add_subdirectory(FreeRTOS/Source)
add_executable(application main.cpp)
target_link_libraries(application kernel)
target_link_libraries(application winmm.lib)
The below is the build output
"C:\Program Files\JetBrains\CLion 2020.1.1\bin\cmake\win\bin\cmake.exe" -E cmake_link_script CMakeFiles\application.dir\link.txt --verbose=1
"C:\Program Files\JetBrains\CLion 2020.1.1\bin\cmake\win\bin\cmake.exe" -E remove -f CMakeFiles\application.dir/objects.a
"F:\TrueSTUDIO for STM32 9.0.0\PCTools\bin\ar.exe" cr CMakeFiles\application.dir/objects.a #CMakeFiles\application.dir\objects1.rsp
"F:\TrueSTUDIO for STM32 9.0.0\PCTools\bin\g++.exe" -g -Xlinker -lwinmm -Wl,--whole-archive CMakeFiles\application.dir/objects.a -Wl,--no-whole-archive -o application.exe -Wl,--out-implib,libapplication.dll.a -Wl,--major-image-version,0,--minor-image-version,0 #CMakeFiles\application.dir\linklibs.rsp
FreeRTOS/Source/portable/MSVC-MingW/libport.a(port.c.obj):port.c:(.text+0x15): undefined reference to `timeGetDevCaps#8'
FreeRTOS/Source/portable/MSVC-MingW/libport.a(port.c.obj):port.c:(.text+0x2d): undefined reference to `timeBeginPeriod#4'
FreeRTOS/Source/portable/MSVC-MingW/libport.a(port.c.obj):port.c:(.text+0xd5): undefined reference to `timeGetDevCaps#8'
FreeRTOS/Source/portable/MSVC-MingW/libport.a(port.c.obj):port.c:(.text+0xe7): undefined reference to `timeEndPeriod#4'
collect2.exe: error: ld returned 1 exit status
mingw32-make.exe[3]: *** [application.exe] Error 1
mingw32-make.exe[2]: *** [CMakeFiles/application.dir/all] Error 2
mingw32-make.exe[1]: *** [CMakeFiles/application.dir/rule] Error 2
mingw32-make.exe: *** [application] Error 2
Can somebody help please.
So, there was no issue with linking the winmm library it is just that I'm linking this to a wrong target. It was a dependency of the windows port in freeRTOS/Source/Portable.
I'm trying to add ZipLip into my project using Clion on ubuntu, but I have this output:
====================[ Build | TryZip | Debug ]==================================
/home/david/Snap/clion-2019.2.4/bin/cmake/linux/bin/cmake --build
/home/david/CLionProjects/TryZip/cmake-build-debug --target TryZip -- -j 2
[ 13%] Built target bzip2
[ 31%] Built target zlib
[ 83%] Built target lzma
[ 95%] Built target ZipLib
Scanning dependencies of target TryZip
[ 97%] Linking CXX executable ../bin/TryZip
/usr/bin/ld: cannot find -lExternalLibrary/ZipLib
collect2: error: ld returned 1 exit status
CMakeFiles/TryZip.dir/build.make:102: recipe for target '../bin/TryZip' failed
make[3]: *** [../bin/TryZip] Error 1
CMakeFiles/Makefile2:109: recipe for target 'CMakeFiles/TryZip.dir/all' failed
make[2]: *** [CMakeFiles/TryZip.dir/all] Error 2
CMakeFiles/Makefile2:116: recipe for target 'CMakeFiles/TryZip.dir/rule' failed
make[1]: *** [CMakeFiles/TryZip.dir/rule] Error 2
Makefile:131: recipe for target 'TryZip' failed
make: *** [TryZip] Error 2
This is my Cmakefile.txt
cmake_minimum_required(VERSION 3.15)
project(TryZip)
if(BOOST_FILESYSTEM)
include_directories(${BOOST_INCLUDE_DIR})
link_directories(${BOOST_LIB_DIR})
add_definitions(-DUSE_BOOST_FILESYSTEM)
else()
if(MSVC)
add_definitions(-DFILESYSTEM_EXPERIMENTAL)
endif()
endif()
if(BOOST_FILESYSTEM)
if(UNIX)
find_package(Boost COMPONENTS system filesystem REQUIRED)
target_link_libraries(${Boost_FILESYSTEM_LIBRARY}
${Boost_SYSTEM_LIBRARY})
endif()
endif()
add_subdirectory(ExternalLibrary/ZipLib)
link_libraries(ExternalLibrary/ZipLib)
include_directories(ExternalLibrary/ZipLib)
set(CMAKE_CXX_STANDARD 17)
add_executable(TryZip main.cpp ExternalLibrary/ZipLib/ZipFile.cpp)
target_link_libraries(TryZip ZipLib)
Can someone help me to solve this please?
My ZipLib folder is in the same folder as my cmakefile.txt file.
The call to link_libraries() appears to accept the wrong arguments in this case. The link_libraries() command takes arguments of existing CMake targets, or library names. It is also redundant with your target_link_libraries() call, as this already links ZipLib to TryZip.
Try removing the call to link_libraries(), as this CMake function is deprecated and its use is highly discouraged. The include_directories() call is similarly deprecated, in favor of the target-specific command, so consider using target_include_directories() instead.
Assuming your added sub-directory ExternalLibrary/ZipLib contains an additional CMakeLists.txt file for configuring the ZipLib target, you should not need to add the ZipFile.cpp file again. If this file is already compiled in the sub-directory into the target ZipLib, you do not need to compile it again into TryZip.
add_subdirectory(ExternalLibrary/ZipLib)
set(CMAKE_CXX_STANDARD 17)
add_executable(TryZip main.cpp)
target_include_directories(TryZip PRIVATE ExternalLibrary/ZipLib)
target_link_libraries(TryZip PRIVATE ZipLib)
EDIT: Based on your feedback, it appears ZipLib also depends on pthread but somehow it is not getting linked correctly. You might try to add the following to your ExternalLibrary/ZipLib/CMakeLists.txt file (if it doesn't already exist), to utilize CMake's FindThreads module:
find_package(Threads REQUIRED)
...
target_link_libraries(ZipLib PUBLIC Threads::Threads)
I cant get working my blas library with cmake. I have arch-linxux, both blas and cmake are installed with pacman. Cant understand where is problem :-(. I made cmake to print out the output of macro CHECK_FORTRAN_FUNCTION_EXISTS, because it fails there. Maybe I dont have proper configuration of ld?
My simple testing CMakeLists.txt:
cmake_minimum_required(VERSION 2.8)
project(Test C Fortran)
find_package(BLAS)
Error part from output:
-- Looking for Fortran sgemm
-- Change Dir: /home/jiri/test_lapack/CMakeFiles/CMakeTmp
Run Build Command:"/usr/bin/make" "cmTC_486fc/fast"
/usr/bin/make -f CMakeFiles/cmTC_486fc.dir/build.make CMakeFiles/cmTC_486fc.dir/build
make[1]: Entering directory '/home/jiri/test_lapack/CMakeFiles/CMakeTmp'
Building Fortran object CMakeFiles/cmTC_486fc.dir/testFortranCompiler.f.o
/usr/bin/gfortran -c /home/jiri/test_lapack/CMakeFiles/CMakeTmp/testFortranCompiler.f -o CMakeFiles/cmTC_486fc.dir/testFortranCompiler.f.o
Linking Fortran executable cmTC_486fc
/usr/bin/cmake -E cmake_link_script CMakeFiles/cmTC_486fc.dir/link.txt --verbose=1
/usr/bin/gfortran CMakeFiles/cmTC_486fc.dir/testFortranCompiler.f.o -o cmTC_486fc /usr/local/lib64/libblas.a
/usr/bin/ld: /usr/local/lib64/libblas.a(sgemm.f.o): relocation R_X86_64_32 against `.rodata' can not be used when making a PIE object; recompile with -fPIC
/usr/bin/ld: /usr/local/lib64/libblas.a(xerbla.f.o): relocation R_X86_64_32S against `.rodata' can not be used when making a PIE object; recompile with -fPIC
/usr/bin/ld: final link failed: Nonrepresentable section on output
collect2: error: ld returned 1 exit status
make[1]: *** [CMakeFiles/cmTC_486fc.dir/build.make:99: cmTC_486fc] Error 1
make[1]: Leaving directory '/home/jiri/test_lapack/CMakeFiles/CMakeTmp'
make: *** [Makefile:126: cmTC_486fc/fast] Error 2
-- Looking for Fortran sgemm - not found
Disclaimer: I'm new to cmake so i have no idea what I'm doing.
All guides and tutorials i find seem to think I'm running a 20 man team that needs to work together.
All I'm trying to do is put all my libraries in an include folder and lib folder.
In visual studio and code::blocks i just set up the linker in the IDE, but cmake is a little hard for me to wrap my head around.
I've set include and link directories with
include_directories(${PROJECT_SOURCE_DIR}/include)
link_directories(${PROJECT_SOURCE_DIR}/lib)
Then i try to
target_link_libraries(${PROJECT_NAME} jsoncpp)
This however produces undefined references. Is there a simple way to add and link libraries without me having to google and add a cmake module for each one?
Edit:
attempts:
target_link_libraries(${PROJECT_NAME} libjsoncpp.a)
error: undefined reference
target_link_libraries(${PROJECT_NAME} libjsoncpp)
error: cannot find -llibjsoncpp
target_link_libraries(${PROJECT_NAME} jsoncpp)
error: undefined reference
target_link_libraries(${PROJECT_NAME} C:/Repos/prosjekt-bad-racoon/lib/libjsoncpp.a)
error: undefined reference
target_link_libraries(${PROJECT_NAME} ${PROJECT_SOURCE_DIR}/lib/libjsoncpp.a)
error: undefined reference
Edit:
Full cmake file
cmake_minimum_required(VERSION 3.8)
project(prosjekt_bad_racoon)
set(CMAKE_CXX_STANDARD 11)
include_directories(${PROJECT_SOURCE_DIR}/include)
link_directories(${PROJECT_SOURCE_DIR}/lib)
set(SOURCE_FILES main.cpp Core.cpp Core.h Collider.cpp Collider.h Player.cpp Player.h Texture.cpp Texture.h AudioController.cpp AudioController.h)
add_executable(prosjekt_bad_racoon ${SOURCE_FILES})
set(EXECUTABLE_NAME ${PROJECT_NAME})
set(CMAKE_MODULE_PATH "${CMAKE_SOURCE_DIR}/cmake_modules" ${CMAKE_MODULE_PATH})
target_link_libraries(${PROJECT_NAME} libjsoncpp.a)
find_package(SFML 2 REQUIRED system window graphics network audio)
if(SFML_FOUND)
include_directories(${SFML_INCLUDE_DIR})
target_link_libraries(${EXECUTABLE_NAME} ${SFML_LIBRARIES})
link_directories("${PROJECT_SOURCE_DIR}")
endif()
"C:\Program Files\JetBrains\CLion 2017.2.2\bin\cmake\bin\cmake.exe" --build C:\Repos\prosjekt-bad-racoon\cmake-build-debug --target prosjekt_bad_racoon -- -j 2
[ 14%] Linking CXX executable prosjekt_bad_racoon.exe
CMakeFiles\prosjekt_bad_racoon.dir/objects.a(Core.cpp.obj): In function `ZN4CoreC2Ev':
C:/Repos/prosjekt-bad-racoon/Core.cpp:3: undefined reference to `Json::Value::Value(char const*)'
CMakeFiles\prosjekt_bad_racoon.dir/objects.a(Core.cpp.obj): In function `ZN4CoreD2Ev':
C:/Repos/prosjekt-bad-racoon/Core.cpp:8: undefined reference to `Json::Value::~Value()'
collect2.exe: error: ld returned 1 exit status
CMakeFiles\prosjekt_bad_racoon.dir\build.make:236: recipe for target 'prosjekt_bad_racoon.exe' failed
mingw32-make.exe[3]: *** [prosjekt_bad_racoon.exe] Error 1
CMakeFiles\Makefile2:66: recipe for target 'CMakeFiles/prosjekt_bad_racoon.dir/all' failed
mingw32-make.exe[2]: *** [CMakeFiles/prosjekt_bad_racoon.dir/all] Error 2
CMakeFiles\Makefile2:78: recipe for target 'CMakeFiles/prosjekt_bad_racoon.dir/rule' failed
mingw32-make.exe[1]: *** [CMakeFiles/prosjekt_bad_racoon.dir/rule] Error 2
Makefile:117: recipe for target 'prosjekt_bad_racoon' failed
mingw32-make.exe: *** [prosjekt_bad_racoon] Error 2
I am able to do this without CMake using a handwritten Makefile, like so:
g++ $(CXSCINC) -c -fPIC cellComplex_extern.cpp -o cellComplex_extern.o
g++ $(CXSCINC) -shared -Wl -o cellComplex_lib.so cellComplex_extern.o $(CXSCLIB) -lcxsc
This gets me shared library cellComplex_lib.so, which then gets picked up by ctypes as a dynamically linked library (lib = ctypes.cdll.LoadLibrary('./cellComplex_lib.so') for later use.
My project has moved to CMake as a build system and I am looking to emulate the functionality of my Makefile above.
So far I have discovered the add_library() command for CMakeLists.txt, but the link to the CXSC library is never made (as evidenced by horrible complaining when I run make after cmake.
How can I tell CMake to build cellComplex_lib with the third-party library CXSC?
-- non-working CMakeLists.txt --
add_library(include/python/cellComplex_extern OBJECT
include/python/cellComplex_extern.cpp ${all_headers})
add_library(include/python/cellComplex_lib SHARED
include/python/cellComplex_extern)
target_link_libraries(include/python/cellComplex_lib ${CXSC_LIB_DIR}/libcxsc.a)
Result of running cmake followed by make:
.
.
.
[ 75%] Built target include/python/cellComplex_extern
Linking CXX shared library libinclude/python/cellComplex_lib.dylib
ld: can't open output file for writing: libinclude/python/cellComplex_lib.dylib, errno=2 for architecture x86_64
clang: error: linker command failed with exit code 1 (use -v to see invocation)
make[2]: *** [libinclude/python/cellComplex_lib.dylib] Error 1
make[1]: *** [CMakeFiles/include/python/cellComplex_lib.dir/all] Error 2
make: *** [all] Error 2
I think you need to use target_link_libraries
target_link_libraries(include/python/cellComplex_lib ${CXSLIB})
This is what I use during Win32 development:
link_directories(${LIB_ROOT_DIR}/lib ${LIB_ROOT_DIR2}/lib/morelibs)
add_library(MyDll1 SHARED File1.cpp File2.cpp)
add_library(MyDll2 SHARED File3.cpp File4.cpp)
add_dependencies(MyDll2 Dll1)
target_link_libraries(MyDll2 Dll1 some.lib another.lib)
Here you specify that Dll2 requires Dll1 and two other external lib's.