当尝试psycopg2通过Mavericks 10.9上的pip 安装时出现以下错误：
clang: error: unknown argument: '-mno-fused-madd' [-Wunused-command-line-argument-hard-error-in-future]
不知道如何进行，并已在此和其他地方搜索了此特定错误。任何帮助深表感谢！
这是pip的完整输出：
$ pip install psycopg2 Downloading/unpacking psycopg2 Downloading psycopg2-2.5.2.tar.gz (685kB): 685kB downloaded Running setup.py (path:/private/var/folders/0z/ljjwsjmn4v9_zwm81vhxj69m0000gn/T/pip_build_tino/psycopg2/setup.py) egg_info for package psycopg2 Installing collected packages: psycopg2 Running setup.py install for psycopg2 building 'psycopg2._psycopg' extension cc -fno-strict-aliasing -fno-common -dynamic -arch x86_64 -arch i386 -g -Os -pipe -fno-common -fno-strict-aliasing -fwrapv -mno-fused-madd -DENABLE_DTRACE -DMACOSX -DNDEBUG -Wall -Wstrict-prototypes -Wshorten-64-to-32 -DNDEBUG -g -fwrapv -Os -Wall -Wstrict-prototypes -DENABLE_DTRACE -arch x86_64 -arch i386 -pipe -DPSYCOPG_DEFAULT_PYDATETIME=1 -DPSYCOPG_VERSION="2.5.2 (dt dec pq3 ext)" -DPG_VERSION_HEX=0x090303 -DPSYCOPG_EXTENSIONS=1 -DPSYCOPG_NEW_BOOLEAN=1 -DHAVE_PQFREEMEM=1 -I/System/Library/Frameworks/Python.framework/Versions/2.7/include/python2.7 -I. -I/usr/local/Cellar/postgresql/9.3.3/include -I/usr/local/Cellar/postgresql/9.3.3/include/server -c psycopg/psycopgmodule.c -o build/temp.macosx-10.9-intel-2.7/psycopg/psycopgmodule.o clang: error: unknown argument: '-mno-fused-madd' [-Wunused-command-line-argument-hard-error-in-future] clang: note: this will be a hard error (cannot be downgraded to a warning) in the future error: command 'cc' failed with exit status 1 Complete output from command /usr/bin/python -c "import setuptools, tokenize;__file__='/private/var/folders/0z/ljjwsjmn4v9_zwm81vhxj69m0000gn/T/pip_build_tino/psycopg2/setup.py';exec(compile(getattr(tokenize, 'open', open)(__file__).read().replace('\r\n', '\n'), __file__, 'exec'))" install --record /var/folders/0z/ljjwsjmn4v9_zwm81vhxj69m0000gn/T/pip-bnWiwB-record/install-record.txt --single-version-externally-managed --compile: running install running build running build_py creating build creating build/lib.macosx-10.9-intel-2.7 creating build/lib.macosx-10.9-intel-2.7/psycopg2 copying lib/__init__.py -> build/lib.macosx-10.9-intel-2.7/psycopg2 copying lib/_json.py -> build/lib.macosx-10.9-intel-2.7/psycopg2 copying lib/_range.py -> build/lib.macosx-10.9-intel-2.7/psycopg2 copying lib/errorcodes.py -> build/lib.macosx-10.9-intel-2.7/psycopg2 copying lib/extensions.py -> build/lib.macosx-10.9-intel-2.7/psycopg2 copying lib/extras.py -> build/lib.macosx-10.9-intel-2.7/psycopg2 copying lib/pool.py -> build/lib.macosx-10.9-intel-2.7/psycopg2 copying lib/psycopg1.py -> build/lib.macosx-10.9-intel-2.7/psycopg2 copying lib/tz.py -> build/lib.macosx-10.9-intel-2.7/psycopg2 creating build/lib.macosx-10.9-intel-2.7/psycopg2/tests copying tests/__init__.py -> build/lib.macosx-10.9-intel-2.7/psycopg2/tests copying tests/dbapi20.py -> build/lib.macosx-10.9-intel-2.7/psycopg2/tests copying tests/dbapi20_tpc.py -> build/lib.macosx-10.9-intel-2.7/psycopg2/tests copying tests/test_async.py -> build/lib.macosx-10.9-intel-2.7/psycopg2/tests copying tests/test_bug_gc.py -> build/lib.macosx-10.9-intel-2.7/psycopg2/tests copying tests/test_bugX000.py -> build/lib.macosx-10.9-intel-2.7/psycopg2/tests copying tests/test_cancel.py -> build/lib.macosx-10.9-intel-2.7/psycopg2/tests copying tests/test_connection.py -> build/lib.macosx-10.9-intel-2.7/psycopg2/tests copying tests/test_copy.py -> build/lib.macosx-10.9-intel-2.7/psycopg2/tests copying tests/test_cursor.py -> build/lib.macosx-10.9-intel-2.7/psycopg2/tests copying tests/test_dates.py -> build/lib.macosx-10.9-intel-2.7/psycopg2/tests copying tests/test_extras_dictcursor.py -> build/lib.macosx-10.9-intel-2.7/psycopg2/tests copying tests/test_green.py -> build/lib.macosx-10.9-intel-2.7/psycopg2/tests copying tests/test_lobject.py -> build/lib.macosx-10.9-intel-2.7/psycopg2/tests copying tests/test_module.py -> build/lib.macosx-10.9-intel-2.7/psycopg2/tests copying tests/test_notify.py -> build/lib.macosx-10.9-intel-2.7/psycopg2/tests copying tests/test_psycopg2_dbapi20.py -> build/lib.macosx-10.9-intel-2.7/psycopg2/tests copying tests/test_quote.py -> build/lib.macosx-10.9-intel-2.7/psycopg2/tests copying tests/test_transaction.py -> build/lib.macosx-10.9-intel-2.7/psycopg2/tests copying tests/test_types_basic.py -> build/lib.macosx-10.9-intel-2.7/psycopg2/tests copying tests/test_types_extras.py -> build/lib.macosx-10.9-intel-2.7/psycopg2/tests copying tests/test_with.py -> build/lib.macosx-10.9-intel-2.7/psycopg2/tests copying tests/testconfig.py -> build/lib.macosx-10.9-intel-2.7/psycopg2/tests copying tests/testutils.py -> build/lib.macosx-10.9-intel-2.7/psycopg2/tests running build_ext building 'psycopg2._psycopg' extension creating build/temp.macosx-10.9-intel-2.7 creating build/temp.macosx-10.9-intel-2.7/psycopg cc -fno-strict-aliasing -fno-common -dynamic -arch x86_64 -arch i386 -g -Os -pipe -fno-common -fno-strict-aliasing -fwrapv -mno-fused-madd -DENABLE_DTRACE -DMACOSX -DNDEBUG -Wall -Wstrict-prototypes -Wshorten-64-to-32 -DNDEBUG -g -fwrapv -Os -Wall -Wstrict-prototypes -DENABLE_DTRACE -arch x86_64 -arch i386 -pipe -DPSYCOPG_DEFAULT_PYDATETIME=1 -DPSYCOPG_VERSION="2.5.2 (dt dec pq3 ext)" -DPG_VERSION_HEX=0x090303 -DPSYCOPG_EXTENSIONS=1 -DPSYCOPG_NEW_BOOLEAN=1 -DHAVE_PQFREEMEM=1 -I/System/Library/Frameworks/Python.framework/Versions/2.7/include/python2.7 -I. -I/usr/local/Cellar/postgresql/9.3.3/include -I/usr/local/Cellar/postgresql/9.3.3/include/server -c psycopg/psycopgmodule.c -o build/temp.macosx-10.9-intel-2.7/psycopg/psycopgmodule.o clang: error: unknown argument: '-mno-fused-madd' [-Wunused-command-line-argument-hard-error-in-future] clang: note: this will be a hard error (cannot be downgraded to a warning) in the future error: command 'cc' failed with exit status 1 ---------------------------------------- Cleaning up... Command /usr/bin/python -c "import setuptools, tokenize;__file__='/private/var/folders/0z/ljjwsjmn4v9_zwm81vhxj69m0000gn/T/pip_build_tino/psycopg2/setup.py';exec(compile(getattr(tokenize, 'open', open)(__file__).read().replace('\r\n', '\n'), __file__, 'exec'))" install --record /var/folders/0z/ljjwsjmn4v9_zwm81vhxj69m0000gn/T/pip-bnWiwB-record/install-record.txt --single-version-externally-managed --compile failed with error code 1 in /private/var/folders/0z/ljjwsjmn4v9_zwm81vhxj69m0000gn/T/pip_build_tino/psycopg2
您可以通过在编译前设置以下环境变量来告诉clang不要将其引发错误：
export CFLAGS=-Qunused-arguments export CPPFLAGS=-Qunused-arguments
然后pip install psycopg2应该工作。
pip install psycopg2
尝试时我有同样的想法pip install lxml。
pip install lxml
编辑：如果您是以超级用户身份安装（如果要追加到/Library/Python/2.7/site-packages，可能是这种情况，如果要附加到OS X附带的Apple出厂时安装的本机本地Python发行版，而不是随后自己安装的其他Python发行版中），则您需要执行此操作，如@Thijs Kuipers在以下评论中所述：
/Library/Python/2.7/site-packages
sudo -E pip install psycopg2
或等价的商品，您可以用代替的其他任何商品名称psycopg2。
