mk: Pass CFLAGS for target, not host

[alexcrichton]

This changes the CFLAGS and related variables passed to compiletest to be passed
for the target, not the host, so we can correctly test 32-bit cross compiles on
64-bit host machines.

Hopefuly fixes#33379

[rust-highfive]

r? @nikomatsakis

(rust_highfive has picked a reviewer for you, use r? to override)

[nikomatsakis]

@bors r+ p=1

[bors]

📌 Commit 4d7dcc6 has been approved by nikomatsakis

[nikomatsakis]

Giving higher priorities because nightlies need to be working.

[bors]

⌛ Testing commit 4d7dcc6 with merge 2b7f2a7...

[bors]

💔 Test failed - auto-linux-musl-64-opt

[alexcrichton]

Everything is terrible for forever! I've updated to just skip run-make tests on cross builds, as that's apparently what we've always done.

@bors: r=nikomatsakis 74d1520

[bors]

⌛ Testing commit 74d1520 with merge a91957b...

[bors]

⛄ The build was interrupted to prioritize another pull request.

[bors]

⌛ Testing commit 74d1520 with merge f9cd22b...

[bors]

💔 Test failed - auto-linux-64-x-android-t

[alexcrichton]

@bors: retry

On Wed, May 4, 2016 at 3:07 AM, bors notifications@github.com wrote:

[image: 💔] Test failed - auto-linux-64-x-android-t
http://buildbot.rust-lang.org/builders/auto-linux-64-x-android-t/builds/8995

—
You are receiving this because you authored the thread.
Reply to this email directly or view it on GitHub
#33381 (comment)

[alexcrichton]

@bors: retry

[bors]

⌛ Testing commit 74d1520 with merge a1d9a79...

[alexcrichton]

@bors: retry force

[bors]

⌛ Testing commit 74d1520 with merge 8655587...

[bors]

💔 Test failed - auto-win-msvc-64-opt

[alexcrichton]

@bors: retry

• Spurious timeout in test net::tcp::tests::close_read_wakes_up #31657

On Wed, May 4, 2016 at 7:32 PM, bors notifications@github.com wrote:

[image: 💔] Test failed - auto-win-msvc-64-opt
http://buildbot.rust-lang.org/builders/auto-win-msvc-64-opt/builds/4092

—
You are receiving this because you authored the thread.
Reply to this email directly or view it on GitHub
#33381 (comment)

[bors]

⚡ Previous build results for auto-linux-32-nopt-t, auto-linux-32-opt, auto-linux-32cross-opt, auto-linux-64-cargotest, auto-linux-64-cross-armhf, auto-linux-64-cross-armsf, auto-linux-64-cross-freebsd, auto-linux-64-cross-netbsd, auto-linux-64-debug-opt, auto-linux-64-nopt-t, auto-linux-64-opt, auto-linux-64-opt-rustbuild, auto-linux-64-x-android-t, auto-linux-cross-opt, auto-linux-musl-64-opt, auto-mac-64-opt-rustbuild, auto-mac-cross-ios-opt, auto-win-gnu-32-nopt-t, auto-win-gnu-32-opt-rustbuild, auto-win-gnu-64-nopt-t, auto-win-msvc-32-cross-opt, auto-win-msvc-64-cargotest, auto-win-msvc-64-opt-rustbuild are reusable. Rebuilding only auto-linux-64-opt-mir, auto-mac-32-opt, auto-mac-64-nopt-t, auto-mac-64-opt, auto-win-gnu-32-opt, auto-win-gnu-64-opt, auto-win-msvc-32-opt, auto-win-msvc-64-opt, auto-win-msvc-64-opt-mir...

[bors]

☀️ Test successful - auto-linux-32-nopt-t, auto-linux-32-opt, auto-linux-32cross-opt, auto-linux-64-cargotest, auto-linux-64-cross-armhf, auto-linux-64-cross-armsf, auto-linux-64-cross-freebsd, auto-linux-64-cross-netbsd, auto-linux-64-debug-opt, auto-linux-64-nopt-t, auto-linux-64-opt, auto-linux-64-opt-mir, auto-linux-64-opt-rustbuild, auto-linux-64-x-android-t, auto-linux-cross-opt, auto-linux-musl-64-opt, auto-mac-32-opt, auto-mac-64-nopt-t, auto-mac-64-opt, auto-mac-64-opt-rustbuild, auto-mac-cross-ios-opt, auto-win-gnu-32-nopt-t, auto-win-gnu-32-opt, auto-win-gnu-32-opt-rustbuild, auto-win-gnu-64-nopt-t, auto-win-gnu-64-opt, auto-win-msvc-32-cross-opt, auto-win-msvc-32-opt, auto-win-msvc-64-cargotest, auto-win-msvc-64-opt, auto-win-msvc-64-opt-mir, auto-win-msvc-64-opt-rustbuild