[tor-bugs] #12631 [Tor Browser]: Tor Browser for ARM architecture

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#12631: Tor Browser for ARM architecture
-------------------------+---------------------
 Reporter:  mttp         |          Owner:
     Type:  project      |         Status:  new
 Priority:  Medium       |      Milestone:
Component:  Tor Browser  |        Version:
 Severity:  Normal       |     Resolution:
 Keywords:  tbb-gitian   |  Actual Points:
Parent ID:               |         Points:
  Sponsor:               |
-------------------------+---------------------
Changes (by cypherpunks):

 * severity:   => Normal


Comment:

 While building tor-browser 5.5-1 on a debian jessie arm system (qemu,
 vexpress-a9), e.g.:
 {{{
 QEMU_AUDIO_DRV=none qemu-system-arm -m 1024M -sd jessie_armhf.img -M
 vexpress-a9 -cpu cortex-a9 -kernel jessie_armhf_vmlinuz_extracted -initrd
 jessie_armhf_initrd_extracted -append "root=/dev/mmcblk0p2
 console=ttyAMA0"  -no-reboot -net nic -net user -dtb vexpress-v2p-ca9.dtb
 -nographic -redir tcp:5555::22
 }}}

 I followed the build instructions from
 https://trac.torproject.org/projects/tor/wiki/doc/TorBrowser/Hacking, with
 no further modifications to build options.

 e.g.
 {{{
 make $CONFIGURE_ARGS -f client.mk configure CONFIGURE_ARGS="--with-tor-
 browser-version=5.5-1"
 make $MAKEOPTS -f client.mk build
 }}}
 The build options for media/libvpx specify -mfloat-abi=softfp, which
 breaks the arm-linux-gnueabihf toolchain as it is missing gnu/stubs-
 soft.h.

 https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=795331
  Applying the author's suggested fix:
 {{{
 diff --git a/media/libvpx/moz.build b/media/libvpx/moz.build
 index a1138f4..999ca94 100644
 --- a/media/libvpx/moz.build
 +++ b/media/libvpx/moz.build
 @@ -65,7 +65,8 @@ if CONFIG['VPX_ARM_ASM']:

      for f in SOURCES:
          if f.endswith('.c') and 'neon' in f:
 -            SOURCES[f].flags += ['-march=armv7-a', '-mthumb', '-mfloat-
 abi=softfp', '-mfpu=neon']
 +            SOURCES[f].flags += ['-mfpu=neon']
 +    #        SOURCES[f].flags += ['-march=armv7-a', '-mthumb', '-mfloat-
 abi=softfp', '-mfpu=neon']
 }}}

 and the build proceeds. I'm not sure if this fix would break platforms
 (e.g. Rpi 1)

--
Ticket URL: <https://trac.torproject.org/projects/tor/ticket/12631#comment:7>
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