Hi,

I'm trying to build Python on OpenBSD-current, but it does not build because it seems that PY_GETENTROPY does not have a value.

$ make
...
gcc -pthread -c -fno-strict-aliasing -Wsign-compare -Wunreachable-code -DNDEBUG -g -fwrapv -O3 -Wall -Wstrict-prototypes  -O2 -pipe   -Werror=declaration-after-statement   -I. -IInclude -I./Include    -DPy_BUILD_CORE -o Python/random.o Python/random.c
Python/random.c:367:20: error: #if with no expression
Python/random.c: In function '_PyOS_URandom':
Python/random.c:370: warning: implicit declaration of function 'dev_urandom_python'
Python/random.c:414:20: error: #if with no expression
Python/random.c: In function '_PyRandom_Init':
Python/random.c:417: warning: implicit declaration of function 'dev_urandom_noraise'
Python/random.c:430:20: error: #if with no expression
Python/random.c: In function '_PyRandom_Fini':
Python/random.c:433: warning: implicit declaration of function 'dev_urandom_close'
*** Error 1 in /home/remi/dev/cpython (Makefile:1534 'Python/random.o')

If I defined the PY_GETENTROPY to the value "1" line 76, it seems to works fine.

Remi.

Patch looks sensible to me, although I notice the rest of that module tends to prefer the #elif defined(PY_GETENTROPY) style. It looks like this might be introduced with Issue 25003.

Attached is the diff to use defined(PY_GETENTROPY) instead of #define PY_GETENTROPY 1.

New changeset e4ac5a899657 by Victor Stinner in branch 'default':
Issue #25171: Fix compilation issue on OpenBSD in random.c
https://hg.python.org/cpython/rev/e4ac5a899657

Thanks Remi for your fix, the compilation succeeded on the buildbot. Sorry for the regression.