компиляция динамической библиотеки на Mac: ld: символ (-ы) не найден для архитектуры x86_64

Question

Я работаю над составлением динамической библиотеки SCIP. SCIP реализован на C, и наш проект оптимизации - это все Java, поэтому мы хотим использовать JNA для доступа к нему. Мы создали оболочку C++ для создания динамической библиотеки, и у меня возникают проблемы с ее компиляцией на моем Mac (работает Yosemite 10.10.2). Вот моя версия gcc и g ++:

> gcc --version 
Configured with: --prefix=/Applications/Xcode.app/Contents/Developer/usr --with-gxx-include-dir=/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.10.sdk/usr/include/c++/4.2.1 
Apple LLVM version 6.0 (clang-600.0.57) (based on LLVM 3.5svn) 
Target: x86_64-apple-darwin14.1.0 
Thread model: posix 
> g++ --version 
Configured with: --prefix=/Applications/Xcode.app/Contents/Developer/usr --with-gxx-include-dir=/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.10.sdk/usr/include/c++/4.2.1 
Apple LLVM version 6.0 (clang-600.0.57) (based on LLVM 3.5svn) 
Target: x86_64-apple-darwin14.1.0 
Thread model: posix 

Мы используем CMake (версия 3.2.1) для создания проекта. Вот наш главный CMakeLists.txt:

set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=c++0x -O2 -Wall -DNDEBUG") 

if(CMAKE_COMPILER_IS_GNUCXX) 
    if("${CMAKE_SYSTEM_PROCESSOR}" STREQUAL "x86_64") 
     set(CMAKE_CXX_FLAGS_RELEASE "${CMAKE_CXX_FLAGS_RELEASE} -fPIC" ) 
     set(CMAKE_CXX_FLAGS_DEBUG "${CMAKE_CXX_FLAGS_DEBUG} -fPIC" )  
    endif() 
endif() 

if(APPLE) 
    set(CMAKE_XCODE_ATTRIBUTE_CLANG_CXX_LANGUAGE_STANDARD "c++0x") 
    set(CMAKE_XCODE_ATTRIBUTE_CLANG_CXX_LIBRARY "libc++") 
    set(CMAKE_XCODE_ATTRIBUTE_GCC_VERSION "com.apple.compilers.llvm.clang.1_0") 
    set(CMAKE_MACOSX_RPATH 1) 
    set(CMAKE_OSX_ARCHITECTURES "x86_64") 
endif() 

if(WIN32) 
    add_definitions(-DUNICODE -D_UNICODE) 
    set(TARGET_ARCHITECTURE "x86") 
endif() 

set(LIB_TYPE SHARED) 
include_directories("/path/to/scipoptsuite-3.1.1/scip-3.1.1/src") 
include_directories("${CMAKE_CURRENT_SOURCE_DIR}") 
add_library(scipLibrary ${LIB_TYPE} "stdafx.cpp") 

Вот выход make VERBOSE=1:

/usr/local/Cellar/cmake/3.2.1/bin/cmake -H/path/to/scip -B/path/to/scip/build --check-build-system CMakeFiles/Makefile.cmake 0 
/usr/local/Cellar/cmake/3.2.1/bin/cmake -E cmake_progress_start /path/to/scip/build/CMakeFiles /path/to/scip/build/CMakeFiles/progress.marks 
/Applications/Xcode.app/Contents/Developer/usr/bin/make -f CMakeFiles/Makefile2 all 
/Applications/Xcode.app/Contents/Developer/usr/bin/make -f source/CMakeFiles/scipLibrary.dir/build.make source/CMakeFiles/scipLibrary.dir/depend 
cd /path/to/scip/build && /usr/local/Cellar/cmake/3.2.1/bin/cmake -E cmake_depends "Unix Makefiles" /path/to/scip /path/to/scip/source /path/to/scip/build /path/to/scip/build/source /path/to/scip/build/source/CMakeFiles/scipLibrary.dir/DependInfo.cmake --color= 
/Applications/Xcode.app/Contents/Developer/usr/bin/make -f source/CMakeFiles/scipLibrary.dir/build.make source/CMakeFiles/scipLibrary.dir/build 
/usr/local/Cellar/cmake/3.2.1/bin/cmake -E cmake_progress_report /path/to/scip/build/CMakeFiles 1 
[100%] Building CXX object source/CMakeFiles/scipLibrary.dir/stdafx.cpp.o 
cd /path/to/scip/build/source && /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/c++ -DscipLibrary_EXPORTS -std=c++0x -O2 -Wall -DNDEBUG -arch x86_64 -isysroot /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.10.sdk -fPIC -I/path/to/scipoptsuite-3.1.1/scip-3.1.1/src -I/path/to/scip/source -o CMakeFiles/scipLibrary.dir/stdafx.cpp.o -c /path/to/scip/source/stdafx.cpp 
Linking CXX shared library ../output/libscipLibrary.dylib 
cd /path/to/scip/build/source && /usr/local/Cellar/cmake/3.2.1/bin/cmake -E cmake_link_script CMakeFiles/scipLibrary.dir/link.txt --verbose=1 
/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/c++ -std=c++0x -O2 -Wall -DNDEBUG -arch x86_64 -isysroot /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.10.sdk -dynamiclib -Wl,-headerpad_max_install_names -o ../output/libscipLibrary.dylib -install_name @rpath/libscipLibrary.dylib CMakeFiles/scipLibrary.dir/stdafx.cpp.o 
Undefined symbols for architecture x86_64: 
    "_SCIPaddBilinTermQuadratic", referenced from: 
     _LibSCIPaddBilinTermQuadratic in stdafx.cpp.o 
    "_SCIPaddCoefLinear", referenced from: 
     _LibSCIPaddCoefLinear in stdafx.cpp.o 
    "_SCIPaddCons", referenced from: 
     _LibSCIPaddCons in stdafx.cpp.o 
    "_SCIPaddQuadVarLinearCoefQuadratic", referenced from: 
     _LibSCIPaddQuadVarLinearCoefQuadratic in stdafx.cpp.o 
    "_SCIPaddSquareCoefQuadratic", referenced from: 
     _LibSCIPaddSquareCoefQuadratic in stdafx.cpp.o 
    "_SCIPaddVar", referenced from: 
     _LibSCIPaddVar in stdafx.cpp.o 
    "_SCIPblkmem", referenced from: 
     _LibSCIPexprCreateLinear in stdafx.cpp.o 
     _LibSCIPexprCreate in stdafx.cpp.o 
     _LibSCIPexprCreateMonomial in stdafx.cpp.o 
     _LibSCIPexprCreatePolynomial in stdafx.cpp.o 
     _LibSCIPexprtreeCreate in stdafx.cpp.o 
    "_SCIPchgVarLb", referenced from: 
     _LibSCIPchgVarLb in stdafx.cpp.o 
    "_SCIPchgVarObj", referenced from: 
     _LibSCIPchgVarObj in stdafx.cpp.o 
    "_SCIPchgVarUb", referenced from: 
     _LibSCIPchgVarUb in stdafx.cpp.o 
    "_SCIPcreate", referenced from: 
     _LibSCIPcreate in stdafx.cpp.o 
    "_SCIPcreateConsBasicAbspower", referenced from: 
     _LibSCIPcreateConsBasicAbspower in stdafx.cpp.o 
    "_SCIPcreateConsBasicLinear", referenced from: 
     _LibSCIPcreateConsBasicLinear in stdafx.cpp.o 
    "_SCIPcreateConsBasicNonlinear", referenced from: 
     _LibSCIPcreateConsBasicNonlinear in stdafx.cpp.o 
    "_SCIPcreateConsBasicQuadratic", referenced from: 
     _LibSCIPcreateConsBasicQuadratic in stdafx.cpp.o 
    "_SCIPcreateConsBasicSetpart", referenced from: 
     _LibSCIPcreateConsBasicSetpart in stdafx.cpp.o 
    "_SCIPcreateProbBasic", referenced from: 
     _LibSCIPcreateProbBasic in stdafx.cpp.o 
    "_SCIPcreateVarBasic", referenced from: 
     _LibSCIPcreateVarBasic in stdafx.cpp.o 
    "_SCIPexprCreate", referenced from: 
     _LibSCIPexprCreate in stdafx.cpp.o 
    "_SCIPexprCreateLinear", referenced from: 
     _LibSCIPexprCreateLinear in stdafx.cpp.o 
    "_SCIPexprCreateMonomial", referenced from: 
     _LibSCIPexprCreateMonomial in stdafx.cpp.o 
    "_SCIPexprCreatePolynomial", referenced from: 
     _LibSCIPexprCreatePolynomial in stdafx.cpp.o 
    "_SCIPexprtreeCreate", referenced from: 
     _LibSCIPexprtreeCreate in stdafx.cpp.o 
    "_SCIPexprtreeFree", referenced from: 
     _LibSCIPexprtreeFree in stdafx.cpp.o 
    "_SCIPexprtreeSetVars", referenced from: 
     _LibSCIPexprtreeSetVars in stdafx.cpp.o 
    "_SCIPfree", referenced from: 
     _LibSCIPfree in stdafx.cpp.o 
    "_SCIPfreeTransform", referenced from: 
     _LibSCIPfreeTransform in stdafx.cpp.o 
    "_SCIPgetBestSol", referenced from: 
     _LibSCIPprintSolution in stdafx.cpp.o 
     _LibSCIPgetBestSol in stdafx.cpp.o 
    "_SCIPgetNSols", referenced from: 
     _LibSCIPgetNSols in stdafx.cpp.o 
    "_SCIPgetStatus", referenced from: 
     _LibSCIPgetStatus in stdafx.cpp.o 
    "_SCIPincludeDefaultPlugins", referenced from: 
     _LibSCIPincludeDefaultPlugins in stdafx.cpp.o 
    "_SCIPmajorVersion", referenced from: 
     _LibSCIPmajorVersion in stdafx.cpp.o 
    "_SCIPmessagePrintError", referenced from: 
     _LibSCIPincludeDefaultPlugins in stdafx.cpp.o 
     _LibSCIPcreateProbBasic in stdafx.cpp.o 
     _LibSCIPchgVarLb in stdafx.cpp.o 
     _LibSCIPchgVarUb in stdafx.cpp.o 
     _LibSCIPaddVar in stdafx.cpp.o 
     _LibSCIPexprtreeSetVars in stdafx.cpp.o 
     _LibSCIPexprtreeFree in stdafx.cpp.o 
     ... 
    "_SCIPmessagePrintErrorHeader", referenced from: 
     _LibSCIPincludeDefaultPlugins in stdafx.cpp.o 
     _LibSCIPcreateProbBasic in stdafx.cpp.o 
     _LibSCIPchgVarLb in stdafx.cpp.o 
     _LibSCIPchgVarUb in stdafx.cpp.o 
     _LibSCIPaddVar in stdafx.cpp.o 
     _LibSCIPexprtreeSetVars in stdafx.cpp.o 
     _LibSCIPexprtreeFree in stdafx.cpp.o 
     ... 
    "_SCIPminorVersion", referenced from: 
     _LibSCIPminorVersion in stdafx.cpp.o 
    "_SCIPpresolve", referenced from: 
     _LibSCIPpresolve in stdafx.cpp.o 
    "_SCIPprintOrigProblem", referenced from: 
     _LibSCIPprintProblemCIP in stdafx.cpp.o 
     _LibSCIPprintProblemMPS in stdafx.cpp.o 
     _LibSCIPprintProblemLP in stdafx.cpp.o 
     _LibSCIPprintProblemCIPToFile in stdafx.cpp.o 
     _LibSCIPprintProblemMPSToFile in stdafx.cpp.o 
     _LibSCIPprintProblemLPToFile in stdafx.cpp.o 
    "_SCIPprintSol", referenced from: 
     _LibSCIPprintSolution in stdafx.cpp.o 
    "_SCIPreleaseCons", referenced from: 
     _LibSCIPreleaseCons in stdafx.cpp.o 
    "_SCIPreleaseVar", referenced from: 
     _LibSCIPreleaseVar in stdafx.cpp.o 
    "_SCIPsetObjsense", referenced from: 
     _LibSCIPsetObjsense in stdafx.cpp.o 
    "_SCIPsolve", referenced from: 
     _LibSCIPsolve in stdafx.cpp.o 
    "_SCIPsubversion", referenced from: 
     _LibSCIPsubversion in stdafx.cpp.o 
    "_SCIPtechVersion", referenced from: 
     _LibSCIPtechVersion in stdafx.cpp.o 
    "_SCIPvarGetLPSol_rec", referenced from: 
     solGetArrayVal(SCIP_Sol*, SCIP_Var*) in stdafx.cpp.o 
    "_SCIPvarGetNLPSol_rec", referenced from: 
     solGetArrayVal(SCIP_Sol*, SCIP_Var*) in stdafx.cpp.o 
    "_SCIPvarGetOrigvarSum", referenced from: 
     _LibSCIPsolGetVal in stdafx.cpp.o 
    "_SCIPvarGetPseudoSol", referenced from: 
     solGetArrayVal(SCIP_Sol*, SCIP_Var*) in stdafx.cpp.o 
    "_SCIPversion", referenced from: 
     _LibSCIPversion in stdafx.cpp.o 
ld: symbol(s) not found for architecture x86_64 
clang: error: linker command failed with exit code 1 (use -v to see invocation) 
make[2]: *** [output/libscipLibrary.dylib] Error 1 
make[1]: *** [source/CMakeFiles/scipLibrary.dir/all] Error 2 
make: *** [all] Error 2 

Вы можете видеть, что проблема заключается в том, что линкер дает нам ld: symbol(s) not found for architecture x86_64 ошибку. Я много искал, чтобы попытаться выяснить, как это решить, но мне не повезло.

Я не уверен, что необходимо предоставить содержимое stdafx.h или stdafx.cpp, так что я оставлю их сейчас, но если это необходимо, сообщите мне, и я могу предоставить их.

Answer 1

Хорошо, я ошибся там, где я не построил scipoptlib, поэтому не было библиотеки для создания против (извините, я никогда раньше не создавал динамическую библиотеку). Запуск make scipoptlib IPOPT=true SHARED=true в /path/to/scipoptsuite-3.1.1 был всем, что нужно было для этого.

Вот обновленный CMakeLists.txt, который ссылается на единственный общий scipoptlib:

set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=c++0x -O2 -Wall -DNDEBUG") 

if(CMAKE_COMPILER_IS_GNUCXX) 
    if("${CMAKE_SYSTEM_PROCESSOR}" STREQUAL "x86_64") 
     set(CMAKE_CXX_FLAGS_RELEASE "${CMAKE_CXX_FLAGS_RELEASE}") 
     set(CMAKE_CXX_FLAGS_DEBUG "${CMAKE_CXX_FLAGS_DEBUG}") 
    endif() 
endif() 

if(APPLE) 
    set(CMAKE_XCODE_ATTRIBUTE_CLANG_CXX_LANGUAGE_STANDARD "c++0x") 
    set(CMAKE_XCODE_ATTRIBUTE_CLANG_CXX_LIBRARY "libc++") 
    set(CMAKE_XCODE_ATTRIBUTE_GCC_VERSION "com.apple.compilers.llvm.clang.1_0") 
    set(CMAKE_MACOSX_RPATH 1) 
endif() 

if(WIN32) 
    add_definitions(-DUNICODE -D_UNICODE) 
    set(TARGET_ARCHITECTURE "x86") 
endif() 

include_directories("/path/to/scipoptsuite-3.1.1/scip-3.1.1/src/") 
add_library(scipLibrary SHARED "stdafx.cpp") 
target_link_libraries(scipLibrary "/path/to/scipoptsuite-3.1.1/lib/libscipopt-3.1.1.darwin.x86_64.gnu.opt.so") 

Я могу на самом деле генерировать dylib сейчас, это здорово! Однако теперь JNA подбрасывает (говоря, что не может найти dylib), но это, вероятно, тема другого потока SO.