Xavier de Gaye added the comment:
Android does not have crypt, but the crypt module is cross-built nevertheless
after this warning has been issued:
warning: implicit declaration of function 'crypt' is invalid in C99
[-Wimplicit-function-declaration]
And at runtime, importing the crypt module fails with:
ImportError: dlopen failed: cannot locate symbol "crypt" referenced by
"_crypt.cpython-37m-i686-linux-android.so"
gcc and clang do not enforce the C99 rules and emit just a warning for implicit
function declarations instead of the error that would be conforming to C99.
This can be changed with the flag '-Werror=implicit-function-declaration' and
the compilation of the crypt extension module rightly fails in that case.
I think this issue should be fixed by adding this flag to the Makefile.
Maybe in another issue.
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nosy: +benjamin.peterson, haypo, martin.panter
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<http://bugs.python.org/issue27659>
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