Question

在我的Python 2.7项目中，我需要安装ta-lib库。在目标环境上，我没有root或sudo权限，因此Python应用程序在虚拟环境中运行。

出于未知原因，当libta_lib.so驻留在用户目录结构（而不是系统的/ usr文件夹）中时，使用pip的ta-lib库安装失败。

我做了什么：

我正在使用Python 2.7创建新的虚拟环境：

ec2-user:~/environment $ python -V
Python 2.7.14

ec2-user:~/environment $ virtualenv -p /usr/bin/python27 my_env
Running virtualenv with interpreter /usr/bin/python27
New python executable in /home/ec2-user/environment/my_env/bin/python27
Also creating executable in /home/ec2-user/environment/my_env/bin/python
Installing setuptools, pip, wheel...done.

ec2-user:~/environment $ source my_env/bin/activate
(my_env) ec2-user:~/environment $

在my_env中，我下载并解压缩了最新的ta-lib。我使用前缀标志将安装路径配置为在虚拟环境中。

(my_env) ec2-user:~/environment/my_env $ ./configure --prefix=/home/ec2-user/environment/my_env
(my_env) ec2-user:~/environment/my_env $ make
(my_env) ec2-user:~/environment/my_env $ make install

配置，制作和安装工作正常。最后，系统告诉我一些东西：

Libraries have been installed in:
   /home/ec2-user/environment/my_env/lib

If you ever happen to want to link against installed libraries
in a given directory, LIBDIR, you must either use libtool, and
specify the full pathname of the library, or use the `-LLIBDIR'
flag during linking and do at least one of the following:
   - add LIBDIR to the `LD_LIBRARY_PATH' environment variable
     during execution
   - add LIBDIR to the `LD_RUN_PATH' environment variable
     during linking
[...]

因此，我将/ home / ec2-user / environment / my_env / lib添加到$ LD_LIBRARY_PATH和$ LD_RUN_PATH中。到目前为止，一切看起来都不错，但是当我

(my_env) ec2-user:~/environment/my_env $ pip install ta-lib
Collecting ta-lib
  Using cached https://files.pythonhosted.org/packages/[...]/
TA-Lib-0.4.17.tar.gz
Requirement already satisfied: numpy in ./lib/python2.7/dist-packages 
(from ta-lib) (1.15.1)
Building wheels for collected packages: ta-lib
  Running setup.py bdist_wheel for ta-lib ... error
  Complete output from command /home/ec2-user/environment/my_env/bin/python27 
-u -c "import setuptools, tokenize;__file__='/tmp/pip-install-MD3Ds7/ta- 
lib/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 /tmp/pip-wheel-dtdhyb --python-tag cp27:
  /tmp/pip-install-MD3Ds7/ta-lib/setup.py:79: UserWarning: Cannot find ta-lib 
 library, installation may fail.
    warnings.warn('Cannot find ta-lib library, installation may fail.')

和...

creating build/temp.linux-x86_64-2.7/talib
gcc -pthread -fno-strict-aliasing -O2 -g -pipe -Wall -Wp,-D_FORTIFY_SOURCE=2 -fexceptions -fstack-protector --param=ssp-buffer-size=4 -m64 -mtune=generic -D_GNU_SOURCE -fPIC -fwrapv -DNDEBUG -O2 -g -pipe -Wall -Wp,-D_FORTIFY_SOURCE=2 -fexceptions -fstack-protector --param=ssp-buffer-size=4 -m64 -mtune=generic -D_GNU_SOURCE -fPIC -fwrapv -fPIC -I/home/ec2-user/environment/my_env/local/lib/python2.7/dist-packages/numpy/core/include -I/usr/include -I/usr/local/include -I/opt/include -I/opt/local/include -I/usr/include/python2.7 -c talib/_ta_lib.c -o build/temp.linux-x86_64-2.7/talib/_ta_lib.o
talib/_ta_lib.c:526:28: fatal error: ta-lib/ta_defs.h: No such file or directory
 #include "ta-lib/ta_defs.h"
                            ^
compilation terminated.
error: command 'gcc' failed with exit status 1

----------------------------------------
Command "/home/ec2-user/environment/my_env/bin/python27 -u -c "import setuptools, tokenize;__file__='/tmp/pip-install-MD3Ds7/ta-lib/setup.py';f=getattr(tokenize, 'open', open)(__file__);code=f.read().replace('\r\n', '\n');f.close();exec(compile(code, __file__, 'exec'))" install --record /tmp/pip-record-YqZ5hO/install-record.txt --single-version-externally-managed --compile --install-headers /home/ec2-user/environment/my_env/include/site/python2.7/ta-lib" failed with error code 1 in /tmp/pip-install-MD3Ds7/ta-lib/
[...]

我还尝试在$ PATH中添加“ / home / ec2-user / environment / my_env / lib”，但是结果是一样的。

为什么无法通过点子找到虚拟环境内部lib文件夹中的librar？

当我将ta-lib二进制文件安装到默认的/ usr / lib文件夹中时（当然使用sudo），pip install ta-lib将找到它并进行安装。不幸的是，这不是目标系统的选择。

我做错什么了吗，还是pip忽略了虚拟环境中的文件夹和路径变量？

关于，啤酒

Answer 1

pip install设置python绑定时，您需要传递已安装标头和共享对象的自定义位置：

$ CPPFLAGS='-I/home/ec2-user/environment/my_env/include' \
  LDFLAGS='-L/home/ec2-user/environment/my_env/lib' pip install ta-lib

在没有sudo的情况下在virtualenv中安装具有二进制依赖性的Python库的问题

1 个答案: