Gentoo's Bugzilla –
Attachment 565992 Details for
Bug 678504app-text/mupdf-1.14.0-r2 USE=libressl - build/debug/libmupdf-pkcs7.a(pkcs7-openssl.o): In function `add_from_bags': pkcs7-openssl.c:(.text.add_from_bags+0x6a): undefined reference to `PKCS12_SAFEBAG_get0_safes'