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Re: [tor-bugs] #21954 [Obfuscation/Snowflake]: Snowflake breaks the 7.0a3 build



#21954: Snowflake breaks the 7.0a3 build
-----------------------------------+-------------------------
 Reporter:  gk                     |          Owner:  arlolra
     Type:  defect                 |         Status:  new
 Priority:  Immediate              |      Milestone:
Component:  Obfuscation/Snowflake  |        Version:
 Severity:  Blocker                |     Resolution:
 Keywords:                         |  Actual Points:
Parent ID:                         |         Points:
 Reviewer:                         |        Sponsor:
-----------------------------------+-------------------------
Description changed by gk:

Old description:

> Building Snowflake breaks our 7.0a3 build with the following error:
> {{{
> + mkdir -p /home/debian/go/src/github.com/keroserene/
> + ln -sf /home/debian/build/go-webrtc
> /home/debian/go/src/github.com/keroserene/go-webrtc
> + CGO_CXXFLAGS='-D_GLIBCXX_USE_CXX11_ABI=1 -D__STDC_FORMAT_MACROS=1'
> + CGO_LDFLAGS=-latomic
> + go install github.com/keroserene/go-webrtc
> # github.com/keroserene/go-webrtc
> <command-line>:0:0: warning: "_GLIBCXX_USE_CXX11_ABI" redefined
> <command-line>:0:0: note: this is the location of the previous definition
> # github.com/keroserene/go-webrtc
> <command-line>:0:0: warning: "_GLIBCXX_USE_CXX11_ABI" redefined
> <command-line>:0:0: note: this is the location of the previous definition
> # github.com/keroserene/go-webrtc
> <command-line>:0:0: warning: "_GLIBCXX_USE_CXX11_ABI" redefined
> <command-line>:0:0: note: this is the location of the previous definition
> # github.com/keroserene/go-webrtc
> /home/debian/install/binutils/bin/ld.gold.real: error:
> ../../go/src/github.com/keroserene/go-webrtc/lib/libwebrtc-
> linux-386-magic.a(dump_syms_regtest.o): unsupported ELF file type 2
> collect2: error: ld returned 1 exit status
> }}}
>
> I double-checked that the commits I am on are the same as in the patch
> for #21748. Furthermore, I made a `make clean-webrtc` and the build
> started with `tbb-7.0a3-build3`.
>
> There are actually two issues here:
>
> 1) We need to unblock the 7.0a3 build as soon as possible as we want to
> release the first ESR52-based Tor Browser alpha next week
>
> 2) I'd like to understand how this can happen at all given that we did
> not change the commits compared to the fix in #21748 and I tested that
> the building worked back then. I somehow doubt that arlolra and I made
> the same mistake (by using the wrong commit or something).
>
> I need to have a fix for that within the next 24 hours, otherwise do I
> need to disable Snowflake in the alphas.

New description:

 Building Snowflake breaks our 7.0a3 build with the following error:
 {{{
 + mkdir -p /home/debian/go/src/github.com/keroserene/
 + ln -sf /home/debian/build/go-webrtc
 /home/debian/go/src/github.com/keroserene/go-webrtc
 + CGO_CXXFLAGS='-D_GLIBCXX_USE_CXX11_ABI=1 -D__STDC_FORMAT_MACROS=1'
 + CGO_LDFLAGS=-latomic
 + go install github.com/keroserene/go-webrtc
 # github.com/keroserene/go-webrtc
 <command-line>:0:0: warning: "_GLIBCXX_USE_CXX11_ABI" redefined
 <command-line>:0:0: note: this is the location of the previous definition
 # github.com/keroserene/go-webrtc
 <command-line>:0:0: warning: "_GLIBCXX_USE_CXX11_ABI" redefined
 <command-line>:0:0: note: this is the location of the previous definition
 # github.com/keroserene/go-webrtc
 <command-line>:0:0: warning: "_GLIBCXX_USE_CXX11_ABI" redefined
 <command-line>:0:0: note: this is the location of the previous definition
 # github.com/keroserene/go-webrtc
 /home/debian/install/binutils/bin/ld.gold.real: error:
 ../../go/src/github.com/keroserene/go-webrtc/lib/libwebrtc-
 linux-386-magic.a(dump_syms_regtest.o): unsupported ELF file type 2
 collect2: error: ld returned 1 exit status
 }}}

 I double-checked that the commits I am on are the same as in the patch for
 #21748. Furthermore, I made a `make clean-webrtc` and the build started
 with `tbb-7.0a3-build3`.

 There are actually two issues here:

 1) We need to unblock the 7.0a3 build as soon as possible as we want to
 release the first ESR52-based Tor Browser alpha next week.

 2) I'd like to understand how this can happen at all given that we did not
 change the commits compared to the fix in #21748 and I tested that the
 building worked back then. I somehow doubt that arlolra and I made the
 same mistake (by using the wrong commit or something).

 I need to have a fix for that within the next 24 hours, otherwise do I
 need to disable Snowflake in the alphas.

--

--
Ticket URL: <https://trac.torproject.org/projects/tor/ticket/21954#comment:1>
Tor Bug Tracker & Wiki <https://trac.torproject.org/>
The Tor Project: anonymity online
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