[Creating forwarding header for WebKit2/NetworkProcess/NetworkProcess.h]
offlineasm: Parsing ../webkitgtk-2.4.11/Source/JavaScriptCore/llint/LowLevelInterpreter.asm and creating offset extractor DerivedSources/JavaScriptCore/LLIntDesiredOffsets.h.
  GEN      DerivedSources/Platform/Geoclue2Interface.h
  GEN      DerivedSources/WebCore/CSSGrammar.cpp
offlineasm: Including file ../webkitgtk-2.4.11/Source/JavaScriptCore/llint/LowLevelInterpreter64.asm
Traceback (most recent call last):
  File "/usr/sbin/gdbus-codegen", line 41, in <module>
    from codegen import codegen_main
ImportError: cannot import name 'codegen_main'
make: *** [GNUmakefile:82204: DerivedSources/Platform/Geoclue2Interface.h] Error 1
make: *** Waiting for unfinished jobs....
DerivedSources/WebCore/CSSGrammar.y:62.1-12: warning: deprecated directive, use ‘%pure-parser’ [-Wdeprecated]
 %pure_parser
 ^^^^^^^^^^^^
offlineasm: Including file ../webkitgtk-2.4.11/Source/JavaScriptCore/llint/LowLevelInterpreter32_64.asm
[Creating forwarding header for WebCore/platform/network/soup/ResourceRequest.h]
[Creating forwarding header for WebCore/platform/network/soup/GUniquePtrSoup.h]
[Creating forwarding header for WebCore/platform/network/soup/ResourceError.h]
[Creating forwarding header for WebCore/platform/network/soup/SoupNetworkSession.h]
[Creating forwarding header for WebCore/platform/network/soup/SocketStreamError.h]
[Creating forwarding header for WebCore/platform/network/soup/CookieJarSoup.h]
[Creating forwarding header for WebCore/platform/network/soup/SocketStreamHandle.h]
[Creating forwarding header for WebCore/platform/network/soup/AuthenticationChallenge.h]
[Creating forwarding header for WebCore/platform/network/soup/ResourceResponse.h]
[Creating forwarding header for WebCore/platform/network/soup/CertificateInfo.h]
[Creating forwarding header for WebKit2/Shared/API/c/soup/WKBaseSoup.h]
[Creating forwarding header for WebKit2/UIProcess/API/C/soup/WKSoupCustomProtocolRequestManager.h]
offlineasm: offset extractor DerivedSources/JavaScriptCore/LLIntDesiredOffsets.h successfully generated.
==> ERROR: There was an error in build().
    Canceling...