How to avoid sub-library aggregation during webrtc compilation on Windows?
Samuel Tranchet
I'm trying to compile and use static WebRTC against OpenSSL 1.1.1 on Windows in a Visual Studio project, here's my gn line :
gn gen ./intermediate --args="target_cpu=\"x64\" use_rtti=false is_debug=true symbol_level=2 enable_iterator_debugging=true rtc_build_tools=false rtc_build_examples=false rtc_include_tests=false enable_precompiled_headers=false use_cxx11=false use_custom_libcxx=false use_custom_libcxx_for_host=false rtc_build_ssl=false rtc_ssl_root=\"C:/libs/OpenSSL/include:\=\\%\" rtc_build_json=false rtc_jsoncpp_root=\"C:/libs/JsonCpp/include:\=\\%\" is_clang=false is_component_build=false use_lld=false dcheck_is_configurable=true"The compilation is OK, but in my Visual Studio 2019 project I've got these 1156 errors at the linker step :
1 - libssl.lib(ssl_lib.obj) : error LNK2005: SSL_CTX_check_private_key already defined in webrtc.lib(ssl_lib.obj)I understood that this appended because libssl.lib and libcrypto.lib are already aggregated in webrtc.lib. But in this project I also use Curl and LibWebSocket that also depend on the same OpenSSL static libs, and when I try to remove libssl.lib and crypto.lib from the linker input this fail with 67 unresolved symbols:
1 - websockets_static.lib(openssl-server.obj) : error LNK2001: unresolved external symbol SSL_ctrlSo my feeling is that only some part of libssl.lib and crypto.lib that are needed by webrtc.lib are aggregated during the compilation of webrtc.lib
My question is : how to avoid sub-library aggregation during webrtc compilation ? The option rtc_build_ssl=false seems to have no effect ... What is the option and where can I pass it ?
Thanks a lot for your help.
JD Arnold
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peks geshkov
Hello,
I reported this problem long time ago and nothing happens. I am
stuck in situation like this as well because my project depend
from libssl and libcrypto but my linkage procedure is ok. My app
crashes when hit some crypto functions in peer connection and data
channel. Webrtc team use boringssl and some functions are
refactored and using fipsmodule for some reasons. Then I create
two tickets from
https://bugs.chromium.org/p/webrtc/issues/detail?id=12641&q=&can=4
and
https://bugs.chromium.org/p/webrtc/issues/detail?id=12767&q=&can=4.
WEBRTC team have big problem with openssl library and this issues
come alive from webrtc88 version!!!
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