我正在尝试在Mac上安装qpsolvers
（https://pypi.org/project/qpsolvers/），但似乎编译器有问题。我正在使用Xcode 11.1运行Mojave 10.14.5。
我使用pip install qpsolvers
我到处搜索，但找不到解决方案。这是完整的输出。似乎我需要将库从libstdc ++更改为libc ++，因为前者已被弃用，但我不知道如何。预先谢谢你。
Collecting quadprog (from qpsolvers)
Using cached https://files.pythonhosted.org/packages/5a/f0/d4c8866f5d14dfa1a441439f5ce0d2680844651772129c431e78caadfe10/quadprog-0.1.7.tar.gz
Requirement already satisfied: Cython in /anaconda3/lib/python3.7/site-packages (from quadprog->qpsolvers) (0.29.12)
Building wheels for collected packages: quadprog
Building wheel for quadprog (setup.py) ... error
ERROR: Command errored out with exit status 1:
command: //anaconda3/bin/python -u -c 'import sys, setuptools, tokenize; sys.argv[0] = '"'"'/private/var/folders/ts/tcs582c520v84jj30bwzm5b40000gn/T/pip-install-tmubn361/quadprog/setup.py'"'"'; __file__='"'"'/private/var/folders/ts/tcs582c520v84jj30bwzm5b40000gn/T/pip-install-tmubn361/quadprog/setup.py'"'"';f=getattr(tokenize, '"'"'open'"'"', open)(__file__);code=f.read().replace('"'"'\r\n'"'"', '"'"'\n'"'"');f.close();exec(compile(code, __file__, '"'"'exec'"'"'))' bdist_wheel -d /private/var/folders/ts/tcs582c520v84jj30bwzm5b40000gn/T/pip-wheel-9l6gxhyh --python-tag cp37
cwd: /private/var/folders/ts/tcs582c520v84jj30bwzm5b40000gn/T/pip-install-tmubn361/quadprog/
Complete output (36 lines):
running bdist_wheel
running build
running build_ext
cythoning quadprog/quadprog.pyx to quadprog/quadprog.cpp
//anaconda3/lib/python3.7/site-packages/Cython/Compiler/Main.py:369: FutureWarning: Cython directive 'language_level' not set, using 2 for now (Py2). This will change in a later release! File: /private/var/folders/ts/tcs582c520v84jj30bwzm5b40000gn/T/pip-install-tmubn361/quadprog/quadprog/quadprog.pyx
tree = Parsing.p_module(s, pxd, full_module_name)
building 'quadprog' extension
creating build
creating build/temp.macosx-10.7-x86_64-3.7
creating build/temp.macosx-10.7-x86_64-3.7/quadprog
gcc -Wno-unused-result -Wsign-compare -Wunreachable-code -DNDEBUG -g -fwrapv -O3 -Wall -Wstrict-prototypes -I//anaconda3/include -arch x86_64 -I//anaconda3/include -arch x86_64 -Iquadprog -I//anaconda3/include/python3.7m -c quadprog/quadprog.cpp -o build/temp.macosx-10.7-x86_64-3.7/quadprog/quadprog.o
warning: include path for stdlibc++ headers not found; pass '-stdlib=libc++' on the command line to use the libc++ standard library instead [-Wstdlibcxx-not-found]
quadprog/quadprog.cpp:2507:28: warning: comparison of integers of different signs: 'size_t' (aka 'unsigned long') and 'int' [-Wsign-compare]
__pyx_t_3 = ((__pyx_t_11 != __pyx_v_n1) != 0);
~~~~~~~~~~ ^ ~~~~~~~~~~
quadprog/quadprog.cpp:2620:28: warning: comparison of integers of different signs: 'size_t' (aka 'unsigned long') and 'int' [-Wsign-compare]
__pyx_t_3 = ((__pyx_t_11 != __pyx_v_m1) != 0);
~~~~~~~~~~ ^ ~~~~~~~~~~
quadprog/quadprog.cpp:19494:26: warning: code will never be executed [-Wunreachable-code]
module = PyImport_ImportModuleLevelObject(
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
4 warnings generated.
gcc -Wno-unused-result -Wsign-compare -Wunreachable-code -DNDEBUG -g -fwrapv -O3 -Wall -Wstrict-prototypes -I//anaconda3/include -arch x86_64 -I//anaconda3/include -arch x86_64 -Iquadprog -I//anaconda3/include/python3.7m -c quadprog/aind.c -o build/temp.macosx-10.7-x86_64-3.7/quadprog/aind.o
gcc -Wno-unused-result -Wsign-compare -Wunreachable-code -DNDEBUG -g -fwrapv -O3 -Wall -Wstrict-prototypes -I//anaconda3/include -arch x86_64 -I//anaconda3/include -arch x86_64 -Iquadprog -I//anaconda3/include/python3.7m -c quadprog/solve.QP.c -o build/temp.macosx-10.7-x86_64-3.7/quadprog/solve.QP.o
gcc -Wno-unused-result -Wsign-compare -Wunreachable-code -DNDEBUG -g -fwrapv -O3 -Wall -Wstrict-prototypes -I//anaconda3/include -arch x86_64 -I//anaconda3/include -arch x86_64 -Iquadprog -I//anaconda3/include/python3.7m -c quadprog/util.c -o build/temp.macosx-10.7-x86_64-3.7/quadprog/util.o
gcc -Wno-unused-result -Wsign-compare -Wunreachable-code -DNDEBUG -g -fwrapv -O3 -Wall -Wstrict-prototypes -I//anaconda3/include -arch x86_64 -I//anaconda3/include -arch x86_64 -Iquadprog -I//anaconda3/include/python3.7m -c quadprog/dpofa.c -o build/temp.macosx-10.7-x86_64-3.7/quadprog/dpofa.o
gcc -Wno-unused-result -Wsign-compare -Wunreachable-code -DNDEBUG -g -fwrapv -O3 -Wall -Wstrict-prototypes -I//anaconda3/include -arch x86_64 -I//anaconda3/include -arch x86_64 -Iquadprog -I//anaconda3/include/python3.7m -c quadprog/daxpy.c -o build/temp.macosx-10.7-x86_64-3.7/quadprog/daxpy.o
gcc -Wno-unused-result -Wsign-compare -Wunreachable-code -DNDEBUG -g -fwrapv -O3 -Wall -Wstrict-prototypes -I//anaconda3/include -arch x86_64 -I//anaconda3/include -arch x86_64 -Iquadprog -I//anaconda3/include/python3.7m -c quadprog/ddot.c -o build/temp.macosx-10.7-x86_64-3.7/quadprog/ddot.o
gcc -Wno-unused-result -Wsign-compare -Wunreachable-code -DNDEBUG -g -fwrapv -O3 -Wall -Wstrict-prototypes -I//anaconda3/include -arch x86_64 -I//anaconda3/include -arch x86_64 -Iquadprog -I//anaconda3/include/python3.7m -c quadprog/dscal.c -o build/temp.macosx-10.7-x86_64-3.7/quadprog/dscal.o
gcc -Wno-unused-result -Wsign-compare -Wunreachable-code -DNDEBUG -g -fwrapv -O3 -Wall -Wstrict-prototypes -I//anaconda3/include -arch x86_64 -I//anaconda3/include -arch x86_64 -Iquadprog -I//anaconda3/include/python3.7m -c quadprog/f2c_lite.c -o build/temp.macosx-10.7-x86_64-3.7/quadprog/f2c_lite.o
creating build/lib.macosx-10.7-x86_64-3.7
g++ -bundle -undefined dynamic_lookup -L//anaconda3/lib -arch x86_64 -L//anaconda3/lib -arch x86_64 -arch x86_64 build/temp.macosx-10.7-x86_64-3.7/quadprog/quadprog.o build/temp.macosx-10.7-x86_64-3.7/quadprog/aind.o build/temp.macosx-10.7-x86_64-3.7/quadprog/solve.QP.o build/temp.macosx-10.7-x86_64-3.7/quadprog/util.o build/temp.macosx-10.7-x86_64-3.7/quadprog/dpofa.o build/temp.macosx-10.7-x86_64-3.7/quadprog/daxpy.o build/temp.macosx-10.7-x86_64-3.7/quadprog/ddot.o build/temp.macosx-10.7-x86_64-3.7/quadprog/dscal.o build/temp.macosx-10.7-x86_64-3.7/quadprog/f2c_lite.o -o build/lib.macosx-10.7-x86_64-3.7/quadprog.cpython-37m-darwin.so
clang: warning: libstdc++ is deprecated; move to libc++ with a minimum deployment target of OS X 10.9 [-Wdeprecated]
ld: library not found for -lstdc++
clang: error: linker command failed with exit code 1 (use -v to see invocation)
error: command 'g++' failed with exit status 1
----------------------------------------
ERROR: Failed building wheel for quadprog
Running setup.py clean for quadprog
Failed to build quadprog
Installing collected packages: quadprog, qpsolvers
Running setup.py install for quadprog ... error
ERROR: Command errored out with exit status 1:
command: //anaconda3/bin/python -u -c 'import sys, setuptools, tokenize; sys.argv[0] = '"'"'/private/var/folders/ts/tcs582c520v84jj30bwzm5b40000gn/T/pip-install-tmubn361/quadprog/setup.py'"'"'; __file__='"'"'/private/var/folders/ts/tcs582c520v84jj30bwzm5b40000gn/T/pip-install-tmubn361/quadprog/setup.py'"'"';f=getattr(tokenize, '"'"'open'"'"', open)(__file__);code=f.read().replace('"'"'\r\n'"'"', '"'"'\n'"'"');f.close();exec(compile(code, __file__, '"'"'exec'"'"'))' install --record /private/var/folders/ts/tcs582c520v84jj30bwzm5b40000gn/T/pip-record-f4urqd3x/install-record.txt --single-version-externally-managed --compile
cwd: /private/var/folders/ts/tcs582c520v84jj30bwzm5b40000gn/T/pip-install-tmubn361/quadprog/
Complete output (34 lines):
running install
running build
running build_ext
skipping 'quadprog/quadprog.cpp' Cython extension (up-to-date)
building 'quadprog' extension
creating build
creating build/temp.macosx-10.7-x86_64-3.7
creating build/temp.macosx-10.7-x86_64-3.7/quadprog
gcc -Wno-unused-result -Wsign-compare -Wunreachable-code -DNDEBUG -g -fwrapv -O3 -Wall -Wstrict-prototypes -I//anaconda3/include -arch x86_64 -I//anaconda3/include -arch x86_64 -Iquadprog -I//anaconda3/include/python3.7m -c quadprog/quadprog.cpp -o build/temp.macosx-10.7-x86_64-3.7/quadprog/quadprog.o
warning: include path for stdlibc++ headers not found; pass '-stdlib=libc++' on the command line to use the libc++ standard library instead [-Wstdlibcxx-not-found]
quadprog/quadprog.cpp:2507:28: warning: comparison of integers of different signs: 'size_t' (aka 'unsigned long') and 'int' [-Wsign-compare]
__pyx_t_3 = ((__pyx_t_11 != __pyx_v_n1) != 0);
~~~~~~~~~~ ^ ~~~~~~~~~~
quadprog/quadprog.cpp:2620:28: warning: comparison of integers of different signs: 'size_t' (aka 'unsigned long') and 'int' [-Wsign-compare]
__pyx_t_3 = ((__pyx_t_11 != __pyx_v_m1) != 0);
~~~~~~~~~~ ^ ~~~~~~~~~~
quadprog/quadprog.cpp:19494:26: warning: code will never be executed [-Wunreachable-code]
module = PyImport_ImportModuleLevelObject(
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
4 warnings generated.
gcc -Wno-unused-result -Wsign-compare -Wunreachable-code -DNDEBUG -g -fwrapv -O3 -Wall -Wstrict-prototypes -I//anaconda3/include -arch x86_64 -I//anaconda3/include -arch x86_64 -Iquadprog -I//anaconda3/include/python3.7m -c quadprog/aind.c -o build/temp.macosx-10.7-x86_64-3.7/quadprog/aind.o
gcc -Wno-unused-result -Wsign-compare -Wunreachable-code -DNDEBUG -g -fwrapv -O3 -Wall -Wstrict-prototypes -I//anaconda3/include -arch x86_64 -I//anaconda3/include -arch x86_64 -Iquadprog -I//anaconda3/include/python3.7m -c quadprog/solve.QP.c -o build/temp.macosx-10.7-x86_64-3.7/quadprog/solve.QP.o
gcc -Wno-unused-result -Wsign-compare -Wunreachable-code -DNDEBUG -g -fwrapv -O3 -Wall -Wstrict-prototypes -I//anaconda3/include -arch x86_64 -I//anaconda3/include -arch x86_64 -Iquadprog -I//anaconda3/include/python3.7m -c quadprog/util.c -o build/temp.macosx-10.7-x86_64-3.7/quadprog/util.o
gcc -Wno-unused-result -Wsign-compare -Wunreachable-code -DNDEBUG -g -fwrapv -O3 -Wall -Wstrict-prototypes -I//anaconda3/include -arch x86_64 -I//anaconda3/include -arch x86_64 -Iquadprog -I//anaconda3/include/python3.7m -c quadprog/dpofa.c -o build/temp.macosx-10.7-x86_64-3.7/quadprog/dpofa.o
gcc -Wno-unused-result -Wsign-compare -Wunreachable-code -DNDEBUG -g -fwrapv -O3 -Wall -Wstrict-prototypes -I//anaconda3/include -arch x86_64 -I//anaconda3/include -arch x86_64 -Iquadprog -I//anaconda3/include/python3.7m -c quadprog/daxpy.c -o build/temp.macosx-10.7-x86_64-3.7/quadprog/daxpy.o
gcc -Wno-unused-result -Wsign-compare -Wunreachable-code -DNDEBUG -g -fwrapv -O3 -Wall -Wstrict-prototypes -I//anaconda3/include -arch x86_64 -I//anaconda3/include -arch x86_64 -Iquadprog -I//anaconda3/include/python3.7m -c quadprog/ddot.c -o build/temp.macosx-10.7-x86_64-3.7/quadprog/ddot.o
gcc -Wno-unused-result -Wsign-compare -Wunreachable-code -DNDEBUG -g -fwrapv -O3 -Wall -Wstrict-prototypes -I//anaconda3/include -arch x86_64 -I//anaconda3/include -arch x86_64 -Iquadprog -I//anaconda3/include/python3.7m -c quadprog/dscal.c -o build/temp.macosx-10.7-x86_64-3.7/quadprog/dscal.o
gcc -Wno-unused-result -Wsign-compare -Wunreachable-code -DNDEBUG -g -fwrapv -O3 -Wall -Wstrict-prototypes -I//anaconda3/include -arch x86_64 -I//anaconda3/include -arch x86_64 -Iquadprog -I//anaconda3/include/python3.7m -c quadprog/f2c_lite.c -o build/temp.macosx-10.7-x86_64-3.7/quadprog/f2c_lite.o
creating build/lib.macosx-10.7-x86_64-3.7
g++ -bundle -undefined dynamic_lookup -L//anaconda3/lib -arch x86_64 -L//anaconda3/lib -arch x86_64 -arch x86_64 build/temp.macosx-10.7-x86_64-3.7/quadprog/quadprog.o build/temp.macosx-10.7-x86_64-3.7/quadprog/aind.o build/temp.macosx-10.7-x86_64-3.7/quadprog/solve.QP.o build/temp.macosx-10.7-x86_64-3.7/quadprog/util.o build/temp.macosx-10.7-x86_64-3.7/quadprog/dpofa.o build/temp.macosx-10.7-x86_64-3.7/quadprog/daxpy.o build/temp.macosx-10.7-x86_64-3.7/quadprog/ddot.o build/temp.macosx-10.7-x86_64-3.7/quadprog/dscal.o build/temp.macosx-10.7-x86_64-3.7/quadprog/f2c_lite.o -o build/lib.macosx-10.7-x86_64-3.7/quadprog.cpython-37m-darwin.so
clang: warning: libstdc++ is deprecated; move to libc++ with a minimum deployment target of OS X 10.9 [-Wdeprecated]
ld: library not found for -lstdc++
clang: error: linker command failed with exit code 1 (use -v to see invocation)
error: command 'g++' failed with exit status 1
----------------------------------------
ERROR: Command errored out with exit status 1: //anaconda3/bin/python -u -c 'import sys, setuptools, tokenize; sys.argv[0] = '"'"'/private/var/folders/ts/tcs582c520v84jj30bwzm5b40000gn/T/pip-install-tmubn361/quadprog/setup.py'"'"'; __file__='"'"'/private/var/folders/ts/tcs582c520v84jj30bwzm5b40000gn/T/pip-install-tmubn361/quadprog/setup.py'"'"';f=getattr(tokenize, '"'"'open'"'"', open)(__file__);code=f.read().replace('"'"'\r\n'"'"', '"'"'\n'"'"');f.close();exec(compile(code, __file__, '"'"'exec'"'"'))' install --record /private/var/folders/ts/tcs582c520v84jj30bwzm5b40000gn/T/pip-record-f4urqd3x/install-record.txt --single-version-externally-managed --compile Check the logs for full command output.```