CI: 32-bit build failing.

[TomAugspurger]

We're failing to compile the C extension on linux 32. See e.g. https://dev.azure.com/pandas-dev/pandas/_build/results?buildId=23011

[TomAugspurger]

#30214 is the first one I see with this failure (though it may be unrelated?) cc @WillAyd.

Ahh I see you're on it #30214 (comment). Thanks!

[TomAugspurger]

The actual error is further up

/home/vsts/miniconda3/envs/pandas-dev/bin/i686-conda_cos6-linux-gnu-cc -DNDEBUG -fwrapv -O2 -Wall -Wstrict-prototypes -march=prescott -mtune=haswell -ftree-vectorize -fPIC -fstack-protector-strong -fno-plt -O2 -pipe -I/include -fdebug-prefix-map=${SRC_DIR}=/usr/local/src/conda/${PKG_NAME}-${PKG_VERSION} -fdebug-prefix-map=${PREFIX}=/usr/local/src/conda-prefix -DNDEBUG -D_FORTIFY_SOURCE=2 -O2 -fPIC -DNPY_NO_DEPRECATED_API=0 -I./pandas/_libs/tslibs -Ipandas/_libs/tslibs -Ipandas/_libs/tslibs/src -I/home/vsts/miniconda3/envs/pandas-dev/lib/python3.6/site-packages/numpy/core/include -I/home/vsts/miniconda3/envs/pandas-dev/include/python3.6m -c pandas/_libs/tslibs/src/datetime/np_datetime.c -o build/temp.linux-x86_64-3.6/pandas/_libs/tslibs/src/datetime/np_datetime.o
i686-conda_cos6-linux-gnu-gcc -pthread -shared -Wl,-O2 -Wl,--sort-common -Wl,--as-needed -Wl,-z,relro -Wl,-z,now -Wl,-rpath,/home/vsts/miniconda3/envs/pandas-dev/lib -L/home/vsts/miniconda3/envs/pandas-dev/lib -Wl,-O2 -Wl,--sort-common -Wl,--as-needed -Wl,-z,relro -Wl,-z,now -Wl,-rpath,/home/vsts/miniconda3/envs/pandas-dev/lib -L/home/vsts/miniconda3/envs/pandas-dev/lib -Wl,-O2 -Wl,--sort-common -Wl,--as-needed -Wl,-z,relro -Wl,-z,now -Wl,--disable-new-dtags -Wl,-rpath,/lib -L/lib -march=prescott -mtune=haswell -ftree-vectorize -fPIC -fstack-protector-strong -fno-plt -O2 -pipe -I/include -fdebug-prefix-map=${SRC_DIR}=/usr/local/src/conda/${PKG_NAME}-${PKG_VERSION} -fdebug-prefix-map=${PREFIX}=/usr/local/src/conda-prefix -DNDEBUG -D_FORTIFY_SOURCE=2 -O2 build/temp.linux-x86_64-3.6/pandas/_libs/tslibs/strptime.o build/temp.linux-x86_64-3.6/pandas/_libs/tslibs/src/datetime/np_datetime.o build/temp.linux-x86_64-3.6/pandas/_libs/tslibs/src/datetime/np_datetime_strings.o -o /home/vsts/work/1/s/pandas/_libs/tslibs/strptime.cpython-36m-i386-linux-gnu.so
/home/vsts/miniconda3/envs/pandas-dev/bin/../lib/gcc/i686-conda_cos6-linux-gnu/7.3.0/../../../../i686-conda_cos6-linux-gnu/bin/ld: build/temp.linux-x86_64-3.6/pandas/_libs/tslibs/src/datetime/np_datetime.o: file not recognized: file truncated

collect2: error: ld returned 1 exit status

[WillAyd]

Ah thanks for finding that - never saw that in the logs. Good to know

[WillAyd]

I think this might be a race condition since any of the libraries that require the C sources end up recompiling the C sources each time. Probably need a few more edits to setup.py to compile the C sources once then simply link as required, but will investigate more

[jbrockmendel]

is the docbuild failure just a coincidence?

[TomAugspurger]

I think everything has been addressed here.