My hunch (not tested) is that the recipe needs -pthread added to LDSHARED: http://git.yoctoproject.org/cgit/cgit.cgi/poky/tree/meta/classes/distutils.bbclass#n82
So try a python3-cryptography_%.bbappend file with “export LDSHARED="${CCLD} -shared -pthread” in your own layer Or try adding that line to python-cryptography.inc and then submit a patch if it works. On Fri, Dec 22, 2017 at 9:10 AM Alan Martinovic <alan.martino...@senic.com> wrote: > I have confirmed that no `-pthread` flags are being set for building > python-cryptography. > > Running the following: > > bitbake python-cryptography -c do_compile > bitbake python-cryptography -c devshell > grep pthread ../temp/run.do_compile > > gives no returns. > Also there isn't a mention of it when doing a build in full > verbose: > > bitbake python-cryptography -c cleanall > bitbake python-cryptography -vvv | vi - > > > On the target the symbol is identified as missing (NOTYPE): > > ~# readelf -a > /usr/lib/python3.5/site-packages/cryptography/hazmat/bindings/_ > openssl.abi3.so > | grep pthread_atfork > 000aebb4 0002d916 R_ARM_JUMP_SLOT 00000000 pthread_atfork > 729: 00000000 0 NOTYPE GLOBAL DEFAULT UND pthread_atfork > > > My current goal is to extend the recipe with the `-pthread` so that > it's there when > the '_openssl' extension is being built. > Still open to suggestions. > > > A thing that seems to be underlying my assumption is that the recipe > for python-cryptography > hasn't actually changed between Morty (where it worked) and Rocko... > > On Thu, Dec 21, 2017 at 6:17 PM, Alan Martinovic > <alan.martino...@senic.com> wrote: > > Hi there, > > just did a migration to Rocko and am witnessing" > > > > root@device:~# python3 > > Python 3.5.3 (default, Dec 20 2017, 02:02:22) > > [GCC 7.2.0] on linux > > Type "help", "copyright", "credits" or "license" for more > information. > > >>> from cryptography.hazmat.bindings._openssl import ffi, lib > > Traceback (most recent call last): > > File "<stdin>", line 1, in <module> > > ImportError: > > /usr/lib/python3.5/site-packages/cryptography/hazmat/bindings/_ > openssl.abi3.so: > > undefined symbol: pthread_atfork > > > > > > Have tried both the recipe that comes with Rocko > > and master of meta-openembedded. > > > > Seems to be the same bug as this one: > > > > https://bugs.gentoo.org/630578 > > > > resolved with this patch: > > > > > https://gitweb.gentoo.org/repo/gentoo.git/commit/?id=c824d1c44fcf4556de21d2c8b8ae3732b0fc0c5b > > > > Can someone provide hints on what would that translate to > > for the python cryptography recipe? > -- > _______________________________________________ > yocto mailing list > yocto@yoctoproject.org > https://lists.yoctoproject.org/listinfo/yocto >
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