IXSocketOpenSSL.cpp:(.text+0xe98): undefined reference to `SSL_get_peer_certificate'

[squeaktoy]

I build abaddon with the following command, and it fails with the following error during link-time.
cmake -Bbuild -DCMAKE_BUILD_TYPE=RelWithDebInfo . && cmake --build build/ -j4:

[100%] Linking CXX executable abaddon
/usr/lib/gcc/x86_64-pc-linux-gnu/13/../../../../x86_64-pc-linux-gnu/bin/ld: /usr/local/lib64/libixwebsocket.a(IXSocketOpenSSL.cpp.o): in function `ix::SocketOpenSSL::openSSLCheckServerCert(ssl_st*, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >&)':
IXSocketOpenSSL.cpp:(.text+0xe98): undefined reference to `SSL_get_peer_certificate'
collect2: error: ld returned 1 exit status
gmake[2]: *** [CMakeFiles/abaddon.dir/build.make:1797: abaddon] Error 1
gmake[1]: *** [CMakeFiles/Makefile2:103: CMakeFiles/abaddon.dir/all] Error 2
gmake: *** [Makefile:136: all] Error 2

System info:
OS: Gentoo Linux

net-libs/ixwebsocket-11.4.4::guru was built with the following:
USE="ssl zlib -test -ws" ABI_X86="(64)"
FEATURES="binpkg-docompress distlocks multilib-strict fixlafiles binpkg-logs preserve-libs xattr protect-owned qa-unresolved-soname-deps unmerge-orphans network-sandbox unmerge-logs splitdebug sfperms unknown-features-warn userpriv config-protect-if-modified pkgdir-index-trusted merge-sync usersandbox ebuild-locks parallel-fetch merge-wait userfetch ipc-sandbox binpkg-dostrip assume-digests sandbox buildpkg-live pid-sandbox usersync strict news"

[ouwou]

what version is your openssl? i think it might be too old

[squeaktoy]

dev-libs/openssl-3.0.13-r2::gentoo was built with the following:
USE="asm -fips -ktls -rfc3779 -sctp -static-libs -test -tls-compression -vanilla -verify-sig -weak-ssl-ciphers" ABI_X86="32 (64) (-x32)" CPU_FLAGS_X86="(sse)"
CFLAGS="-O2 -march=native -pipe -g -fno-strict-aliasing -Wa,--noexecstack"
CXXFLAGS="-O2 -march=native -pipe -g -fno-strict-aliasing -Wa,--noexecstack"
FEATURES="ipc-sandbox userpriv news distlocks protect-owned assume-digests parallel-fetch sfperms fail-clean binpkg-logs strict sandbox pkgdir-index-trusted unknown-features-warn ebuild-locks unmerge-orphans usersync binpkg-dostrip usersandbox unmerge-logs merge-sync pid-sandbox xattr qa-unresolved-soname-deps splitdebug network-sandbox userfetch multilib-strict binpkg-docompress config-protect-if-modified fixlafiles preserve-libs buildpkg-live"

[ouwou]

i think cmake is picking up old openssl headers since SSL_get_peer_certificate is defined as SSL_get1_peer_certificate but thats not what the linker is seeing.
you can check OPENSSL_INCLUDE_DIR in CMakeCache.txt to see what path contains the openssl headers and openssl/opensslv.h for the version of the headers

[squeaktoy]

OPENSSL_INCLUDE_DIR:PATH=/usr/include

[squeaktoy]

$ rg SSL_get_peer_certificate /usr/include/openssl/
/usr/include/openssl/ssl.h
1792:#   define SSL_get_peer_certificate SSL_get1_peer_certificate

As you can see it is defined, so it's strange why it's seemingly "undefined" when compiling abaddon

[ouwou]

are there any other openssl packages installed? maybe im confusing myself but perhaps your install of ixwebsocket wants to link to openssl 1 but the build picked up openssl 3?