I've been trying to install version 0.2.1 on Mojave but it's somehow unhappy with gcc. I installed anaconda and I've tried both in the base environment and created another virtual environment. The error message is below. I get a similar message if I don't specify a version.

I've done the things suggested in this link but it doesn't seem to help: https://stackoverflow.com/questions/52509602/cant-compile-c-program-on-a-mac-after-upgrade-to-mojave

Maybe this is relevant: hkwi/python-geohash#27

pip install thrift_sasl==0.2.1
Collecting thrift_sasl==0.2.1
Collecting thriftpy (from thrift_sasl==0.2.1)
Collecting sasl>=0.2.1 (from thrift_sasl==0.2.1)
Using cached https://files.pythonhosted.org/packages/8e/2c/45dae93d666aea8492678499e0999269b4e55f1829b1e4de5b8204706ad9/sasl-0.2.1.tar.gz
Collecting ply<4.0,>=3.4 (from thriftpy->thrift_sasl==0.2.1)
Using cached https://files.pythonhosted.org/packages/a3/58/35da89ee790598a0700ea49b2a66594140f44dec458c07e8e3d4979137fc/ply-3.11-py2.py3-none-any.whl
Requirement already satisfied: six in /anaconda3/envs/py36/lib/python3.6/site-packages (from sasl>=0.2.1->thrift_sasl==0.2.1) (1.12.0)
Building wheels for collected packages: sasl
Running setup.py bdist_wheel for sasl ... error
Complete output from command /anaconda3/envs/py36/bin/python -u -c "import setuptools, tokenize;file='/private/var/folders/1p/xb7bs_j111x1pxh7km__3dx80000gp/T/pip-install-0j2takk9/sasl/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/1p/xb7bs_j111x1pxh7km__3dx80000gp/T/pip-wheel-1nmq5k21 --python-tag cp36:
running bdist_wheel
running build
running build_py
creating build
creating build/lib.macosx-10.7-x86_64-3.6
creating build/lib.macosx-10.7-x86_64-3.6/sasl
copying sasl/init.py -> build/lib.macosx-10.7-x86_64-3.6/sasl
running egg_info
writing sasl.egg-info/PKG-INFO
writing dependency_links to sasl.egg-info/dependency_links.txt
writing requirements to sasl.egg-info/requires.txt
writing top-level names to sasl.egg-info/top_level.txt
reading manifest file 'sasl.egg-info/SOURCES.txt'
reading manifest template 'MANIFEST.in'
writing manifest file 'sasl.egg-info/SOURCES.txt'
copying sasl/saslwrapper.cpp -> build/lib.macosx-10.7-x86_64-3.6/sasl
copying sasl/saslwrapper.h -> build/lib.macosx-10.7-x86_64-3.6/sasl
copying sasl/saslwrapper.pyx -> build/lib.macosx-10.7-x86_64-3.6/sasl
running build_ext
building 'sasl.saslwrapper' extension
creating build/temp.macosx-10.7-x86_64-3.6
creating build/temp.macosx-10.7-x86_64-3.6/sasl
gcc -Wno-unused-result -Wsign-compare -Wunreachable-code -DNDEBUG -g -fwrapv -O3 -Wall -Wstrict-prototypes -I/anaconda3/envs/py36/include -arch x86_64 -I/anaconda3/envs/py36/include -arch x86_64 -Isasl -I/anaconda3/envs/py36/include/python3.6m -c sasl/saslwrapper.cpp -o build/temp.macosx-10.7-x86_64-3.6/sasl/saslwrapper.o
warning: include path for stdlibc++ headers not found; pass '-std=libc++' on the command line to use the libc++ standard library instead [-Wstdlibcxx-not-found]
sasl/saslwrapper.cpp:249:10: fatal error: 'string' file not found
#include
^~~~~~~~
1 warning and 1 error generated.
error: command 'gcc' failed with exit status 1

Failed building wheel for sasl
Running setup.py clean for sasl
Failed to build sasl
Installing collected packages: ply, thriftpy, sasl, thrift-sasl
Running setup.py install for sasl ... error
Complete output from command /anaconda3/envs/py36/bin/python -u -c "import setuptools, tokenize;file='/private/var/folders/1p/xb7bs_j111x1pxh7km__3dx80000gp/T/pip-install-0j2takk9/sasl/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/1p/xb7bs_j111x1pxh7km__3dx80000gp/T/pip-record-1mce8tj1/install-record.txt --single-version-externally-managed --compile:
running install
running build
running build_py
creating build
creating build/lib.macosx-10.7-x86_64-3.6
creating build/lib.macosx-10.7-x86_64-3.6/sasl
copying sasl/init.py -> build/lib.macosx-10.7-x86_64-3.6/sasl
running egg_info
writing sasl.egg-info/PKG-INFO
writing dependency_links to sasl.egg-info/dependency_links.txt
writing requirements to sasl.egg-info/requires.txt
writing top-level names to sasl.egg-info/top_level.txt
reading manifest file 'sasl.egg-info/SOURCES.txt'
reading manifest template 'MANIFEST.in'
writing manifest file 'sasl.egg-info/SOURCES.txt'
copying sasl/saslwrapper.cpp -> build/lib.macosx-10.7-x86_64-3.6/sasl
copying sasl/saslwrapper.h -> build/lib.macosx-10.7-x86_64-3.6/sasl
copying sasl/saslwrapper.pyx -> build/lib.macosx-10.7-x86_64-3.6/sasl
running build_ext
building 'sasl.saslwrapper' extension
creating build/temp.macosx-10.7-x86_64-3.6
creating build/temp.macosx-10.7-x86_64-3.6/sasl
gcc -Wno-unused-result -Wsign-compare -Wunreachable-code -DNDEBUG -g -fwrapv -O3 -Wall -Wstrict-prototypes -I/anaconda3/envs/py36/include -arch x86_64 -I/anaconda3/envs/py36/include -arch x86_64 -Isasl -I/anaconda3/envs/py36/include/python3.6m -c sasl/saslwrapper.cpp -o build/temp.macosx-10.7-x86_64-3.6/sasl/saslwrapper.o
warning: include path for stdlibc++ headers not found; pass '-std=libc++' on the command line to use the libc++ standard library instead [-Wstdlibcxx-not-found]
sasl/saslwrapper.cpp:249:10: fatal error: 'string' file not found
#include
^~~~~~~~
1 warning and 1 error generated.
error: command 'gcc' failed with exit status 1

----------------------------------------

Command "/anaconda3/envs/py36/bin/python -u -c "import setuptools, tokenize;file='/private/var/folders/1p/xb7bs_j111x1pxh7km__3dx80000gp/T/pip-install-0j2takk9/sasl/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/1p/xb7bs_j111x1pxh7km__3dx80000gp/T/pip-record-1mce8tj1/install-record.txt --single-version-externally-managed --compile" failed with error code 1 in /private/var/folders/1p/xb7bs_j111x1pxh7km__3dx80000gp/T/pip-install-0j2takk9/sasl/