Python build FAILED (OS X 10.14.6 using python-build 20180424)

Hello. When I install by bundled_installer, bundled_installer fails to install Python with the following error.

************************************************************
5. Installing Python 3.7.2. This step may take a few minutes
************************************************************
python-build: use openssl from homebrew
python-build: use readline from homebrew
Downloading Python-3.7.2.tar.xz...
-> https://www.python.org/ftp/python/3.7.2/Python-3.7.2.tar.xz
Installing Python-3.7.2...
python-build: use readline from homebrew

BUILD FAILED (OS X 10.14.6 using python-build 20180424)

Inspect or clean up the working tree at /var/folders/rg/jn_7wts95hv3m8dm6g_68t8c0000gn/T/python-build.20190810153428.85076
Results logged to /var/folders/rg/jn_7wts95hv3m8dm6g_68t8c0000gn/T/python-build.20190810153428.85076.log

Last 10 log lines:
  File "/private/var/folders/rg/jn_7wts95hv3m8dm6g_68t8c0000gn/T/python-build.20190810153428.85076/Python-3.7.2/Lib/ensurepip/__main__.py", line 5, in <module>
    sys.exit(ensurepip._main())
  File "/private/var/folders/rg/jn_7wts95hv3m8dm6g_68t8c0000gn/T/python-build.20190810153428.85076/Python-3.7.2/Lib/ensurepip/__init__.py", line 204, in _main
    default_pip=args.default_pip,
  File "/private/var/folders/rg/jn_7wts95hv3m8dm6g_68t8c0000gn/T/python-build.20190810153428.85076/Python-3.7.2/Lib/ensurepip/__init__.py", line 117, in _bootstrap
    return _run_pip(args + [p[0] for p in _PROJECTS], additional_paths)
  File "/private/var/folders/rg/jn_7wts95hv3m8dm6g_68t8c0000gn/T/python-build.20190810153428.85076/Python-3.7.2/Lib/ensurepip/__init__.py", line 27, in _run_pip
    import pip._internal
zipimport.ZipImportError: can't decompress data; zlib not available
make: *** [install] Error 1
   Exiting due to failure

The following message is output to the logfile.

Python build finished successfully!
The necessary bits to build these optional modules were not found:
_dbm                  _gdbm                 _hashlib           
_sqlite3              _ssl                  _uuid              
nis                   ossaudiodev           spwd               
zlib                                                           
To find the necessary bits, look in setup.py in detect_modules() for the module's name.


The following modules found by detect_modules() in setup.py, have been
built by the Makefile instead, as configured by the Setup files:
_abc                  atexit                pwd                
time                                                           

Could not build the ssl module!
Python requires an OpenSSL 1.0.2 or 1.1 compatible libssl with X509_VERIFY_PARAM_set1_host().
LibreSSL 2.6.4 and earlier do not provide the necessary APIs, https://github.com/libressl-portable/portable/issues/381

I want to know how to install python successfully.

[ressom]

I think the confusion is in the setting of CFLAGS

If I do the following in a shell, I am able to get things working, but the way the docs express it, it does not work.

From the cloned repo dir:

brew install zlib openssl readline && \
CFLAGS="-I$(brew --prefix openssl)/include -I$(brew --prefix readline)/include -I$(xcrun --show-sdk-path)/usr/include" LDFLAGS="-L$(brew --prefix openssl)/lib -L$(brew --prefix readline)/lib -L$(brew --prefix zlib)/lib" ./scripts/bundled_installer

[David2913]

In case the above solutions did not work for someone, this is what worked for me: After installing using: brew install zlib openssl readline I set an additional flag: CONFIGURE_OPTS="--with-openssl=$(brew --prefix openssl)" The complete command to install the cli was: CFLAGS="-I$(brew --prefix openssl)/include -I$(brew --prefix readline)/include -I$(xcrun --show-sdk-path)/usr/include" LDFLAGS="-L$(brew --prefix openssl)/lib -L$(brew --prefix readline)/lib -L$(brew --prefix zlib)/lib" CPPFLAGS="-I$(brew --prefix zlib)/include" CONFIGURE_OPTS="--with-openssl=$(brew --prefix openssl)" ./scripts/bundled_installer