在MacOS上安装psycopg2失败，并显示错误消息

Question

尝试在MacOS 10.14.4上使用pip 19.1安装psycopg2会返回以下冗长的错误消息。我知道有些警告与gcc有关，但是鉴于实际的错误消息，我无法找到任何潜在问题的线索。

我尝试了以下操作，但没有任何运气：

• 将Xcode升级到最新版本（10.2.1）
• 将Postgresql升级到11.2.1
• 卸载psycopg2-binary以防止出现任何依赖性问题
• 清除了以前成功安装的所有文件/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-packages（是，我已经安装了某个文件，并且可以正常工作，不确定为什么要卸载）

在pip和psycopg2周围似乎存在很多问题，但是我在Stackoverflow上发现的任何问题都没有显示类似的错误消息，也没有提供任何建议的修复程序。非常感谢任何指向潜在修复程序的提示！

pip install psycopg2
Collecting psycopg2
  Using cached https://files.pythonhosted.org/packages/23/7e/93c325482c328619870b6cd09370f6dbe1148283daca65115cd63642e60f/psycopg2-2.8.2.tar.gz
Installing collected packages: psycopg2
  Running setup.py install for psycopg2 ... error
    ERROR: Complete output from command /Library/Frameworks/Python.framework/Versions/3.7/bin/python3.7 -u -c 'import setuptools, tokenize;__file__='"'"'/private/var/folders/y4/3pcgz9d54zj29hfq1lmlxpk80000gn/T/pip-install-ci93cz6u/psycopg2/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/y4/3pcgz9d54zj29hfq1lmlxpk80000gn/T/pip-record-ztnpuu7u/install-record.txt --single-version-externally-managed --compile:
    ERROR: running install
    running build
    running build_py
    creating build
    creating build/lib.macosx-10.9-x86_64-3.7
    creating build/lib.macosx-10.9-x86_64-3.7/psycopg2
    copying lib/_json.py -> build/lib.macosx-10.9-x86_64-3.7/psycopg2
    copying lib/extras.py -> build/lib.macosx-10.9-x86_64-3.7/psycopg2
    copying lib/compat.py -> build/lib.macosx-10.9-x86_64-3.7/psycopg2
    copying lib/errorcodes.py -> build/lib.macosx-10.9-x86_64-3.7/psycopg2
    copying lib/tz.py -> build/lib.macosx-10.9-x86_64-3.7/psycopg2
    copying lib/_range.py -> build/lib.macosx-10.9-x86_64-3.7/psycopg2
    copying lib/_ipaddress.py -> build/lib.macosx-10.9-x86_64-3.7/psycopg2
    copying lib/_lru_cache.py -> build/lib.macosx-10.9-x86_64-3.7/psycopg2
    copying lib/__init__.py -> build/lib.macosx-10.9-x86_64-3.7/psycopg2
    copying lib/extensions.py -> build/lib.macosx-10.9-x86_64-3.7/psycopg2
    copying lib/errors.py -> build/lib.macosx-10.9-x86_64-3.7/psycopg2
    copying lib/sql.py -> build/lib.macosx-10.9-x86_64-3.7/psycopg2
    copying lib/pool.py -> build/lib.macosx-10.9-x86_64-3.7/psycopg2
    running build_ext
    building 'psycopg2._psycopg' extension
    creating build/temp.macosx-10.9-x86_64-3.7
    creating build/temp.macosx-10.9-x86_64-3.7/psycopg
    gcc -Wno-unused-result -Wsign-compare -Wunreachable-code -fno-common -dynamic -DNDEBUG -g -fwrapv -O3 -Wall -arch x86_64 -g -DPSYCOPG_VERSION=2.8.2 (dt dec pq3 ext lo64) -DPG_VERSION_NUM=110002 -DHAVE_LO64=1 -I/Library/Frameworks/Python.framework/Versions/3.7/include/python3.7m -I. -I/usr/local/Cellar/postgresql/11.2_1/include -I/usr/local/Cellar/postgresql/11.2_1/include/server -c psycopg/psycopgmodule.c -o build/temp.macosx-10.9-x86_64-3.7/psycopg/psycopgmodule.o
    gcc -Wno-unused-result -Wsign-compare -Wunreachable-code -fno-common -dynamic -DNDEBUG -g -fwrapv -O3 -Wall -arch x86_64 -g -DPSYCOPG_VERSION=2.8.2 (dt dec pq3 ext lo64) -DPG_VERSION_NUM=110002 -DHAVE_LO64=1 -I/Library/Frameworks/Python.framework/Versions/3.7/include/python3.7m -I. -I/usr/local/Cellar/postgresql/11.2_1/include -I/usr/local/Cellar/postgresql/11.2_1/include/server -c psycopg/green.c -o build/temp.macosx-10.9-x86_64-3.7/psycopg/green.o
    gcc -Wno-unused-result -Wsign-compare -Wunreachable-code -fno-common -dynamic -DNDEBUG -g -fwrapv -O3 -Wall -arch x86_64 -g -DPSYCOPG_VERSION=2.8.2 (dt dec pq3 ext lo64) -DPG_VERSION_NUM=110002 -DHAVE_LO64=1 -I/Library/Frameworks/Python.framework/Versions/3.7/include/python3.7m -I. -I/usr/local/Cellar/postgresql/11.2_1/include -I/usr/local/Cellar/postgresql/11.2_1/include/server -c psycopg/pqpath.c -o build/temp.macosx-10.9-x86_64-3.7/psycopg/pqpath.o
    psycopg/pqpath.c:135:17: warning: implicit conversion from enumeration type 'ConnStatusType' to different enumeration type 'ExecStatusType' [-Wenum-conversion]
                    PQstatus(conn->pgconn) : PQresultStatus(*pgres)));
                    ^~~~~~~~~~~~~~~~~~~~~~
    psycopg/pqpath.c:1710:11: warning: code will never be executed [-Wunreachable-code]
        ret = 1;
              ^
    psycopg/pqpath.c:1815:17: warning: implicit conversion from enumeration type 'ConnStatusType' to different enumeration type 'ExecStatusType' [-Wenum-conversion]
                    PQstatus(curs->conn->pgconn) : PQresultStatus(curs->pgres)));
                    ^~~~~~~~~~~~~~~~~~~~~~~~~~~~
    3 warnings generated.
    gcc -Wno-unused-result -Wsign-compare -Wunreachable-code -fno-common -dynamic -DNDEBUG -g -fwrapv -O3 -Wall -arch x86_64 -g -DPSYCOPG_VERSION=2.8.2 (dt dec pq3 ext lo64) -DPG_VERSION_NUM=110002 -DHAVE_LO64=1 -I/Library/Frameworks/Python.framework/Versions/3.7/include/python3.7m -I. -I/usr/local/Cellar/postgresql/11.2_1/include -I/usr/local/Cellar/postgresql/11.2_1/include/server -c psycopg/utils.c -o build/temp.macosx-10.9-x86_64-3.7/psycopg/utils.o
    gcc -Wno-unused-result -Wsign-compare -Wunreachable-code -fno-common -dynamic -DNDEBUG -g -fwrapv -O3 -Wall -arch x86_64 -g -DPSYCOPG_VERSION=2.8.2 (dt dec pq3 ext lo64) -DPG_VERSION_NUM=110002 -DHAVE_LO64=1 -I/Library/Frameworks/Python.framework/Versions/3.7/include/python3.7m -I. -I/usr/local/Cellar/postgresql/11.2_1/include -I/usr/local/Cellar/postgresql/11.2_1/include/server -c psycopg/bytes_format.c -o build/temp.macosx-10.9-x86_64-3.7/psycopg/bytes_format.o
    In file included from psycopg/bytes_format.c:81:
    In file included from ./psycopg/psycopg.h:37:
    ./psycopg/config.h:81:13: warning: unused function 'Dprintf' [-Wunused-function]
    static void Dprintf(const char *fmt, ...) {}
                ^
    1 warning generated.
    gcc -Wno-unused-result -Wsign-compare -Wunreachable-code -fno-common -dynamic -DNDEBUG -g -fwrapv -O3 -Wall -arch x86_64 -g -DPSYCOPG_VERSION=2.8.2 (dt dec pq3 ext lo64) -DPG_VERSION_NUM=110002 -DHAVE_LO64=1 -I/Library/Frameworks/Python.framework/Versions/3.7/include/python3.7m -I. -I/usr/local/Cellar/postgresql/11.2_1/include -I/usr/local/Cellar/postgresql/11.2_1/include/server -c psycopg/libpq_support.c -o build/temp.macosx-10.9-x86_64-3.7/psycopg/libpq_support.o
    In file included from psycopg/libpq_support.c:29:
    In file included from ./psycopg/psycopg.h:37:
    ./psycopg/config.h:81:13: warning: unused function 'Dprintf' [-Wunused-function]
    static void Dprintf(const char *fmt, ...) {}
                ^
    1 warning generated.
    gcc -Wno-unused-result -Wsign-compare -Wunreachable-code -fno-common -dynamic -DNDEBUG -g -fwrapv -O3 -Wall -arch x86_64 -g -DPSYCOPG_VERSION=2.8.2 (dt dec pq3 ext lo64) -DPG_VERSION_NUM=110002 -DHAVE_LO64=1 -I/Library/Frameworks/Python.framework/Versions/3.7/include/python3.7m -I. -I/usr/local/Cellar/postgresql/11.2_1/include -I/usr/local/Cellar/postgresql/11.2_1/include/server -c psycopg/win32_support.c -o build/temp.macosx-10.9-x86_64-3.7/psycopg/win32_support.o
    In file included from psycopg/win32_support.c:27:
    In file included from ./psycopg/psycopg.h:37:
    ./psycopg/config.h:81:13: warning: unused function 'Dprintf' [-Wunused-function]
    static void Dprintf(const char *fmt, ...) {}
                ^
    1 warning generated.
    gcc -Wno-unused-result -Wsign-compare -Wunreachable-code -fno-common -dynamic -DNDEBUG -g -fwrapv -O3 -Wall -arch x86_64 -g -DPSYCOPG_VERSION=2.8.2 (dt dec pq3 ext lo64) -DPG_VERSION_NUM=110002 -DHAVE_LO64=1 -I/Library/Frameworks/Python.framework/Versions/3.7/include/python3.7m -I. -I/usr/local/Cellar/postgresql/11.2_1/include -I/usr/local/Cellar/postgresql/11.2_1/include/server -c psycopg/solaris_support.c -o build/temp.macosx-10.9-x86_64-3.7/psycopg/solaris_support.o
    In file included from psycopg/solaris_support.c:28:
    In file included from ./psycopg/psycopg.h:37:
    ./psycopg/config.h:81:13: warning: unused function 'Dprintf' [-Wunused-function]
    static void Dprintf(const char *fmt, ...) {}
                ^
    1 warning generated.
    gcc -Wno-unused-result -Wsign-compare -Wunreachable-code -fno-common -dynamic -DNDEBUG -g -fwrapv -O3 -Wall -arch x86_64 -g -DPSYCOPG_VERSION=2.8.2 (dt dec pq3 ext lo64) -DPG_VERSION_NUM=110002 -DHAVE_LO64=1 -I/Library/Frameworks/Python.framework/Versions/3.7/include/python3.7m -I. -I/usr/local/Cellar/postgresql/11.2_1/include -I/usr/local/Cellar/postgresql/11.2_1/include/server -c psycopg/connection_int.c -o build/temp.macosx-10.9-x86_64-3.7/psycopg/connection_int.o
    gcc -Wno-unused-result -Wsign-compare -Wunreachable-code -fno-common -dynamic -DNDEBUG -g -fwrapv -O3 -Wall -arch x86_64 -g -DPSYCOPG_VERSION=2.8.2 (dt dec pq3 ext lo64) -DPG_VERSION_NUM=110002 -DHAVE_LO64=1 -I/Library/Frameworks/Python.framework/Versions/3.7/include/python3.7m -I. -I/usr/local/Cellar/postgresql/11.2_1/include -I/usr/local/Cellar/postgresql/11.2_1/include/server -c psycopg/connection_type.c -o build/temp.macosx-10.9-x86_64-3.7/psycopg/connection_type.o
    gcc -Wno-unused-result -Wsign-compare -Wunreachable-code -fno-common -dynamic -DNDEBUG -g -fwrapv -O3 -Wall -arch x86_64 -g -DPSYCOPG_VERSION=2.8.2 (dt dec pq3 ext lo64) -DPG_VERSION_NUM=110002 -DHAVE_LO64=1 -I/Library/Frameworks/Python.framework/Versions/3.7/include/python3.7m -I. -I/usr/local/Cellar/postgresql/11.2_1/include -I/usr/local/Cellar/postgresql/11.2_1/include/server -c psycopg/cursor_int.c -o build/temp.macosx-10.9-x86_64-3.7/psycopg/cursor_int.o
    gcc -Wno-unused-result -Wsign-compare -Wunreachable-code -fno-common -dynamic -DNDEBUG -g -fwrapv -O3 -Wall -arch x86_64 -g -DPSYCOPG_VERSION=2.8.2 (dt dec pq3 ext lo64) -DPG_VERSION_NUM=110002 -DHAVE_LO64=1 -I/Library/Frameworks/Python.framework/Versions/3.7/include/python3.7m -I. -I/usr/local/Cellar/postgresql/11.2_1/include -I/usr/local/Cellar/postgresql/11.2_1/include/server -c psycopg/cursor_type.c -o build/temp.macosx-10.9-x86_64-3.7/psycopg/cursor_type.o
    gcc -Wno-unused-result -Wsign-compare -Wunreachable-code -fno-common -dynamic -DNDEBUG -g -fwrapv -O3 -Wall -arch x86_64 -g -DPSYCOPG_VERSION=2.8.2 (dt dec pq3 ext lo64) -DPG_VERSION_NUM=110002 -DHAVE_LO64=1 -I/Library/Frameworks/Python.framework/Versions/3.7/include/python3.7m -I. -I/usr/local/Cellar/postgresql/11.2_1/include -I/usr/local/Cellar/postgresql/11.2_1/include/server -c psycopg/column_type.c -o build/temp.macosx-10.9-x86_64-3.7/psycopg/column_type.o
    In file included from psycopg/column_type.c:27:
    In file included from ./psycopg/psycopg.h:37:
    ./psycopg/config.h:81:13: warning: unused function 'Dprintf' [-Wunused-function]
    static void Dprintf(const char *fmt, ...) {}
                ^
    1 warning generated.
    gcc -Wno-unused-result -Wsign-compare -Wunreachable-code -fno-common -dynamic -DNDEBUG -g -fwrapv -O3 -Wall -arch x86_64 -g -DPSYCOPG_VERSION=2.8.2 (dt dec pq3 ext lo64) -DPG_VERSION_NUM=110002 -DHAVE_LO64=1 -I/Library/Frameworks/Python.framework/Versions/3.7/include/python3.7m -I. -I/usr/local/Cellar/postgresql/11.2_1/include -I/usr/local/Cellar/postgresql/11.2_1/include/server -c psycopg/replication_connection_type.c -o build/temp.macosx-10.9-x86_64-3.7/psycopg/replication_connection_type.o
    In file included from psycopg/replication_connection_type.c:27:
    In file included from ./psycopg/psycopg.h:37:
    ./psycopg/config.h:81:13: warning: unused function 'Dprintf' [-Wunused-function]
    static void Dprintf(const char *fmt, ...) {}
                ^
    1 warning generated.
    gcc -Wno-unused-result -Wsign-compare -Wunreachable-code -fno-common -dynamic -DNDEBUG -g -fwrapv -O3 -Wall -arch x86_64 -g -DPSYCOPG_VERSION=2.8.2 (dt dec pq3 ext lo64) -DPG_VERSION_NUM=110002 -DHAVE_LO64=1 -I/Library/Frameworks/Python.framework/Versions/3.7/include/python3.7m -I. -I/usr/local/Cellar/postgresql/11.2_1/include -I/usr/local/Cellar/postgresql/11.2_1/include/server -c psycopg/replication_cursor_type.c -o build/temp.macosx-10.9-x86_64-3.7/psycopg/replication_cursor_type.o
    gcc -Wno-unused-result -Wsign-compare -Wunreachable-code -fno-common -dynamic -DNDEBUG -g -fwrapv -O3 -Wall -arch x86_64 -g -DPSYCOPG_VERSION=2.8.2 (dt dec pq3 ext lo64) -DPG_VERSION_NUM=110002 -DHAVE_LO64=1 -I/Library/Frameworks/Python.framework/Versions/3.7/include/python3.7m -I. -I/usr/local/Cellar/postgresql/11.2_1/include -I/usr/local/Cellar/postgresql/11.2_1/include/server -c psycopg/replication_message_type.c -o build/temp.macosx-10.9-x86_64-3.7/psycopg/replication_message_type.o
    In file included from psycopg/replication_message_type.c:27:
    In file included from ./psycopg/psycopg.h:37:
    ./psycopg/config.h:81:13: warning: unused function 'Dprintf' [-Wunused-function]
    static void Dprintf(const char *fmt, ...) {}
                ^
    1 warning generated.
    gcc -Wno-unused-result -Wsign-compare -Wunreachable-code -fno-common -dynamic -DNDEBUG -g -fwrapv -O3 -Wall -arch x86_64 -g -DPSYCOPG_VERSION=2.8.2 (dt dec pq3 ext lo64) -DPG_VERSION_NUM=110002 -DHAVE_LO64=1 -I/Library/Frameworks/Python.framework/Versions/3.7/include/python3.7m -I. -I/usr/local/Cellar/postgresql/11.2_1/include -I/usr/local/Cellar/postgresql/11.2_1/include/server -c psycopg/diagnostics_type.c -o build/temp.macosx-10.9-x86_64-3.7/psycopg/diagnostics_type.o
    In file included from psycopg/diagnostics_type.c:27:
    In file included from ./psycopg/psycopg.h:37:
    ./psycopg/config.h:81:13: warning: unused function 'Dprintf' [-Wunused-function]
    static void Dprintf(const char *fmt, ...) {}
                ^
    1 warning generated.
    gcc -Wno-unused-result -Wsign-compare -Wunreachable-code -fno-common -dynamic -DNDEBUG -g -fwrapv -O3 -Wall -arch x86_64 -g -DPSYCOPG_VERSION=2.8.2 (dt dec pq3 ext lo64) -DPG_VERSION_NUM=110002 -DHAVE_LO64=1 -I/Library/Frameworks/Python.framework/Versions/3.7/include/python3.7m -I. -I/usr/local/Cellar/postgresql/11.2_1/include -I/usr/local/Cellar/postgresql/11.2_1/include/server -c psycopg/error_type.c -o build/temp.macosx-10.9-x86_64-3.7/psycopg/error_type.o
    In file included from psycopg/error_type.c:27:
    In file included from ./psycopg/psycopg.h:37:
    ./psycopg/config.h:81:13: warning: unused function 'Dprintf' [-Wunused-function]
    static void Dprintf(const char *fmt, ...) {}
                ^
    1 warning generated.
    gcc -Wno-unused-result -Wsign-compare -Wunreachable-code -fno-common -dynamic -DNDEBUG -g -fwrapv -O3 -Wall -arch x86_64 -g -DPSYCOPG_VERSION=2.8.2 (dt dec pq3 ext lo64) -DPG_VERSION_NUM=110002 -DHAVE_LO64=1 -I/Library/Frameworks/Python.framework/Versions/3.7/include/python3.7m -I. -I/usr/local/Cellar/postgresql/11.2_1/include -I/usr/local/Cellar/postgresql/11.2_1/include/server -c psycopg/conninfo_type.c -o build/temp.macosx-10.9-x86_64-3.7/psycopg/conninfo_type.o
    In file included from psycopg/conninfo_type.c:27:
    In file included from ./psycopg/psycopg.h:37:
    ./psycopg/config.h:81:13: warning: unused function 'Dprintf' [-Wunused-function]
    static void Dprintf(const char *fmt, ...) {}
                ^
    1 warning generated.
    gcc -Wno-unused-result -Wsign-compare -Wunreachable-code -fno-common -dynamic -DNDEBUG -g -fwrapv -O3 -Wall -arch x86_64 -g -DPSYCOPG_VERSION=2.8.2 (dt dec pq3 ext lo64) -DPG_VERSION_NUM=110002 -DHAVE_LO64=1 -I/Library/Frameworks/Python.framework/Versions/3.7/include/python3.7m -I. -I/usr/local/Cellar/postgresql/11.2_1/include -I/usr/local/Cellar/postgresql/11.2_1/include/server -c psycopg/lobject_int.c -o build/temp.macosx-10.9-x86_64-3.7/psycopg/lobject_int.o
    gcc -Wno-unused-result -Wsign-compare -Wunreachable-code -fno-common -dynamic -DNDEBUG -g -fwrapv -O3 -Wall -arch x86_64 -g -DPSYCOPG_VERSION=2.8.2 (dt dec pq3 ext lo64) -DPG_VERSION_NUM=110002 -DHAVE_LO64=1 -I/Library/Frameworks/Python.framework/Versions/3.7/include/python3.7m -I. -I/usr/local/Cellar/postgresql/11.2_1/include -I/usr/local/Cellar/postgresql/11.2_1/include/server -c psycopg/lobject_type.c -o build/temp.macosx-10.9-x86_64-3.7/psycopg/lobject_type.o
    gcc -Wno-unused-result -Wsign-compare -Wunreachable-code -fno-common -dynamic -DNDEBUG -g -fwrapv -O3 -Wall -arch x86_64 -g -DPSYCOPG_VERSION=2.8.2 (dt dec pq3 ext lo64) -DPG_VERSION_NUM=110002 -DHAVE_LO64=1 -I/Library/Frameworks/Python.framework/Versions/3.7/include/python3.7m -I. -I/usr/local/Cellar/postgresql/11.2_1/include -I/usr/local/Cellar/postgresql/11.2_1/include/server -c psycopg/notify_type.c -o build/temp.macosx-10.9-x86_64-3.7/psycopg/notify_type.o
    In file included from psycopg/notify_type.c:27:
    In file included from ./psycopg/psycopg.h:37:
    ./psycopg/config.h:81:13: warning: unused function 'Dprintf' [-Wunused-function]
    static void Dprintf(const char *fmt, ...) {}
                ^
    1 warning generated.
    gcc -Wno-unused-result -Wsign-compare -Wunreachable-code -fno-common -dynamic -DNDEBUG -g -fwrapv -O3 -Wall -arch x86_64 -g -DPSYCOPG_VERSION=2.8.2 (dt dec pq3 ext lo64) -DPG_VERSION_NUM=110002 -DHAVE_LO64=1 -I/Library/Frameworks/Python.framework/Versions/3.7/include/python3.7m -I. -I/usr/local/Cellar/postgresql/11.2_1/include -I/usr/local/Cellar/postgresql/11.2_1/include/server -c psycopg/xid_type.c -o build/temp.macosx-10.9-x86_64-3.7/psycopg/xid_type.o
    gcc -Wno-unused-result -Wsign-compare -Wunreachable-code -fno-common -dynamic -DNDEBUG -g -fwrapv -O3 -Wall -arch x86_64 -g -DPSYCOPG_VERSION=2.8.2 (dt dec pq3 ext lo64) -DPG_VERSION_NUM=110002 -DHAVE_LO64=1 -I/Library/Frameworks/Python.framework/Versions/3.7/include/python3.7m -I. -I/usr/local/Cellar/postgresql/11.2_1/include -I/usr/local/Cellar/postgresql/11.2_1/include/server -c psycopg/adapter_asis.c -o build/temp.macosx-10.9-x86_64-3.7/psycopg/adapter_asis.o
    gcc -Wno-unused-result -Wsign-compare -Wunreachable-code -fno-common -dynamic -DNDEBUG -g -fwrapv -O3 -Wall -arch x86_64 -g -DPSYCOPG_VERSION=2.8.2 (dt dec pq3 ext lo64) -DPG_VERSION_NUM=110002 -DHAVE_LO64=1 -I/Library/Frameworks/Python.framework/Versions/3.7/include/python3.7m -I. -I/usr/local/Cellar/postgresql/11.2_1/include -I/usr/local/Cellar/postgresql/11.2_1/include/server -c psycopg/adapter_binary.c -o build/temp.macosx-10.9-x86_64-3.7/psycopg/adapter_binary.o
    gcc -Wno-unused-result -Wsign-compare -Wunreachable-code -fno-common -dynamic -DNDEBUG -g -fwrapv -O3 -Wall -arch x86_64 -g -DPSYCOPG_VERSION=2.8.2 (dt dec pq3 ext lo64) -DPG_VERSION_NUM=110002 -DHAVE_LO64=1 -I/Library/Frameworks/Python.framework/Versions/3.7/include/python3.7m -I. -I/usr/local/Cellar/postgresql/11.2_1/include -I/usr/local/Cellar/postgresql/11.2_1/include/server -c psycopg/adapter_datetime.c -o build/temp.macosx-10.9-x86_64-3.7/psycopg/adapter_datetime.o
    gcc -Wno-unused-result -Wsign-compare -Wunreachable-code -fno-common -dynamic -DNDEBUG -g -fwrapv -O3 -Wall -arch x86_64 -g -DPSYCOPG_VERSION=2.8.2 (dt dec pq3 ext lo64) -DPG_VERSION_NUM=110002 -DHAVE_LO64=1 -I/Library/Frameworks/Python.framework/Versions/3.7/include/python3.7m -I. -I/usr/local/Cellar/postgresql/11.2_1/include -I/usr/local/Cellar/postgresql/11.2_1/include/server -c psycopg/adapter_list.c -o build/temp.macosx-10.9-x86_64-3.7/psycopg/adapter_list.o
    gcc -Wno-unused-result -Wsign-compare -Wunreachable-code -fno-common -dynamic -DNDEBUG -g -fwrapv -O3 -Wall -arch x86_64 -g -DPSYCOPG_VERSION=2.8.2 (dt dec pq3 ext lo64) -DPG_VERSION_NUM=110002 -DHAVE_LO64=1 -I/Library/Frameworks/Python.framework/Versions/3.7/include/python3.7m -I. -I/usr/local/Cellar/postgresql/11.2_1/include -I/usr/local/Cellar/postgresql/11.2_1/include/server -c psycopg/adapter_pboolean.c -o build/temp.macosx-10.9-x86_64-3.7/psycopg/adapter_pboolean.o
    gcc -Wno-unused-result -Wsign-compare -Wunreachable-code -fno-common -dynamic -DNDEBUG -g -fwrapv -O3 -Wall -arch x86_64 -g -DPSYCOPG_VERSION=2.8.2 (dt dec pq3 ext lo64) -DPG_VERSION_NUM=110002 -DH

    

Answer 1

感谢您添加错误日志，否则将很难找到问题。辛苦了

日志的这一部分非常有趣：

    gcc -Wno-unused-result -Wsign-compare -Wunreachable-code -fno-common -dynamic -DNDEBUG -g -fwrapv -O3 -Wall -arch x86_64 -g -DPSYCOPG_VERSION=2.8.2 (dt dec pq3 ext lo64) -DPG_VERSION_NUM=110002 -DHAVE_LO64=1 -I/Library/Frameworks/Python.framework/Versions/3.7/include/python3.7m -I. -I/usr/local/Cellar/postgresql/11.2_1/include -I/usr/local/Cellar/postgresql/11.2_1/include/server -c psycopg/typecast.c -o build/temp.macosx-10.9-x86_64-3.7/psycopg/typecast.o
    gcc -bundle -undefined dynamic_lookup -arch x86_64 -g build/temp.macosx-10.9-x86_64-3.7/psycopg/psycopgmodule.o build/temp.macosx-10.9-x86_64-3.7/psycopg/green.o build/temp.macosx-10.9-x86_64-3.7/psycopg/pqpath.o build/temp.macosx-10.9-x86_64-3.7/psycopg/utils.o build/temp.macosx-10.9-x86_64-3.7/psycopg/bytes_format.o build/temp.macosx-10.9-x86_64-3.7/psycopg/libpq_support.o build/temp.macosx-10.9-x86_64-3.7/psycopg/win32_support.o build/temp.macosx-10.9-x86_64-3.7/psycopg/solaris_support.o build/temp.macosx-10.9-x86_64-3.7/psycopg/connection_int.o build/temp.macosx-10.9-x86_64-3.7/psycopg/connection_type.o build/temp.macosx-10.9-x86_64-3.7/psycopg/cursor_int.o build/temp.macosx-10.9-x86_64-3.7/psycopg/cursor_type.o build/temp.macosx-10.9-x86_64-3.7/psycopg/column_type.o build/temp.macosx-10.9-x86_64-3.7/psycopg/replication_connection_type.o build/temp.macosx-10.9-x86_64-3.7/psycopg/replication_cursor_type.o build/temp.macosx-10.9-x86_64-3.7/psycopg/replication_message_type.o build/temp.macosx-10.9-x86_64-3.7/psycopg/diagnostics_type.o build/temp.macosx-10.9-x86_64-3.7/psycopg/error_type.o build/temp.macosx-10.9-x86_64-3.7/psycopg/conninfo_type.o build/temp.macosx-10.9-x86_64-3.7/psycopg/lobject_int.o build/temp.macosx-10.9-x86_64-3.7/psycopg/lobject_type.o build/temp.macosx-10.9-x86_64-3.7/psycopg/notify_type.o build/temp.macosx-10.9-x86_64-3.7/psycopg/xid_type.o build/temp.macosx-10.9-x86_64-3.7/psycopg/adapter_asis.o build/temp.macosx-10.9-x86_64-3.7/psycopg/adapter_binary.o build/temp.macosx-10.9-x86_64-3.7/psycopg/adapter_datetime.o build/temp.macosx-10.9-x86_64-3.7/psycopg/adapter_list.o build/temp.macosx-10.9-x86_64-3.7/psycopg/adapter_pboolean.o build/temp.macosx-10.9-x86_64-3.7/psycopg/adapter_pdecimal.o build/temp.macosx-10.9-x86_64-3.7/psycopg/adapter_pint.o build/temp.macosx-10.9-x86_64-3.7/psycopg/adapter_pfloat.o build/temp.macosx-10.9-x86_64-3.7/psycopg/adapter_qstring.o build/temp.macosx-10.9-x86_64-3.7/psycopg/microprotocols.o build/temp.macosx-10.9-x86_64-3.7/psycopg/microprotocols_proto.o build/temp.macosx-10.9-x86_64-3.7/psycopg/typecast.o -L/usr/local/lib -lpq -lssl -lcrypto -o build/lib.macosx-10.9-x86_64-3.7/psycopg2/_psycopg.cpython-37m-darwin.so
    ld: library not found for -lssl

第二gcc个提到了这一点：

-L/usr/local/lib -lpq -lssl -lcrypto -o ...

也就是说，编译过程正在寻找-l恰好是的库（）ssl。请参阅gcc手册（https://linux.die.net/man/1/gcc）。它说的-l是ssl在链接时搜索名为library的库（在我们的例子中为）。

ssl缺少带库的东西。

Google搜索导致报告了一个问题：https : //github.com/psycopg/psycopg2/issues/492。Joe Kemp的答案（https://github.com/psycopg/psycopg2/issues/492#issuecomment-278481164）建议设置如下环境变量：

export LDFLAGS="-L/usr/local/opt/openssl/lib"

其他选项在此处列出：在Mac OS X 10.7上，无法在virtualenv中使用pip安装psycopg2。

看来您的设置LDFLAGS解决了该问题。