[tor-bugs] #24424 [Core Tor/Tor]: fails to build with libseccomp-dev installed on arm64

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#24424: fails to build with libseccomp-dev installed on arm64
--------------------------+----------------------------------
 Reporter:  weasel        |          Owner:  (none)
     Type:  defect        |         Status:  new
 Priority:  Medium        |      Milestone:
Component:  Core Tor/Tor  |        Version:  Tor: unspecified
 Severity:  Normal        |     Resolution:
 Keywords:                |  Actual Points:
Parent ID:                |         Points:
 Reviewer:                |        Sponsor:
--------------------------+----------------------------------
Description changed by weasel:

Old description:

> {{{
> 13:21:06 ../tor/src/common/sandbox.c: In function 'sigsys_debugging':
> 13:21:06 ../tor/src/common/sandbox.c:1812:35: error: 'mcontext_t {aka
> struct sigcontext}' has no member named 'M_SYSCALL'
> 13:21:06    syscall = (int) ctx->uc_mcontext.M_SYSCALL;
> 13:21:06                                    ^
> 13:21:13 Makefile:5615: recipe for target 'src/common/sandbox.o' failed
> 13:21:13 make[1]: *** [src/common/sandbox.o] Error 1
> }}}
>
> Note that on arm64, __arm__ is not defined.
>
> cf. https://wiki.debian.org/ArchitectureSpecificsMemo

New description:

 {{{
 13:21:06 ../tor/src/common/sandbox.c: In function 'sigsys_debugging':
 13:21:06 ../tor/src/common/sandbox.c:1812:35: error: 'mcontext_t {aka
 struct sigcontext}' has no member named 'M_SYSCALL'
 13:21:06    syscall = (int) ctx->uc_mcontext.M_SYSCALL;
 13:21:06                                    ^
 13:21:13 Makefile:5615: recipe for target 'src/common/sandbox.o' failed
 13:21:13 make[1]: *** [src/common/sandbox.o] Error 1
 }}}

 Note that on arm64, {{{__arm__}}} is not defined.

 cf. https://wiki.debian.org/ArchitectureSpecificsMemo

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Ticket URL: <https://trac.torproject.org/projects/tor/ticket/24424#comment:1>
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