[tor-bugs] #9711 [Tor bundles/installation]: Test out crosstools-ng for Gitian OSX builds (instead of toolchain4 binaries)

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#9711: Test out crosstools-ng for Gitian OSX builds (instead of toolchain4
binaries)
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     Reporter:  mikeperry                 |      Owner:  erinn
         Type:  task                      |     Status:  needs_information
     Priority:  normal                    |  Milestone:
    Component:  Tor bundles/installation  |    Version:
   Resolution:                            |   Keywords:  tbb-3.0, gitian
Actual Points:                            |  Parent ID:
       Points:                            |
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Comment (by mingwandroid):

 I've had an initial look and here's what I've gleamed:

 There's currently an issue which forces us to need to clean out both the
 builddir and any existing installation before doing subsequent builds in
 the same directories. For you this would mean doing:

 rm -rf /home/firefox/crosstool-ng/ct-ng-final /home/firefox/x-tools

 You're currently basing your build on the darwin10 sample, but actually
 you'd be better off starting from my darwin11 one (see note [1]) so I'd
 replace samples/i686-apple-darwin10/crosstool.config with samples/i686
 -apple-darwin11/crosstool.config and then, to turn it back into a darwin10
 config, change the following entries:

 CT_DARWIN_MAC_OSX_V_10_7=y
 to:
 CT_DARWIN_MAC_OSX_V_10_6=y

 CT_DARWIN_VERSION="11"
 to:
 CT_DARWIN_VERSION="10"

 CT_DARWIN_SDK_PATH="${HOME}/MacOSX10.7.sdk"
 to:
 CT_DARWIN_SDK_PATH="${HOME}/MacOSX10.6.sdk"

 .. if you want to be able to use the generated toolchains without passing
 --sysroot $MacOSXSDKDir then change (I don't recommend this - see note
 [2]) change

 CT_DARWIN_COPY_SDK_TO_SYSROOT=n
 to:
 CT_DARWIN_COPY_SDK_TO_SYSROOT=y

 .. depending on whether you would want to debug issues if/when we run into
 them change (likely worthwhile for now, provided you've got ~20GB to
 spare)

 CT_DEBUGGABLE_TOOLCHAIN=n
 to:
 CT_DEBUGGABLE_TOOLCHAIN=y

 Notes:

 [1] I suspect I maintain my darwin11 samples a bit more regularly, whereas
 Yann generates new ones each time via make menuconfig. Also my samples
 will always use the latest versions of things that are in a reasonably
 working state (LLVM and clang 3.3 in this case)

 [2] I don't recommend this as it's not a use-case I have verified as
 working, specifically, AFAIK the frameworks are not copied over so
 building anything that requires more components than a C and C++ library
 is likely to fail. Further, toolchains built like this cannot be legally
 distributed.

-- 
Ticket URL: <https://trac.torproject.org/projects/tor/ticket/9711#comment:13>
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