Limit bootstrap vendor testing to x86_64.

Although we may eventually make this work, it's just not a high priority
right now.

Author: staticfloat

BinaryBuilderToolchains.jl/test/CMakeToolchainTests.jl

@@ -79,7 +79,7 @@ ENV["TESTSUITE_OUTPUT_DIR"] = mktempdir()
     @info("Running cmake tests for $(length(supported_platforms(CToolchain))) platforms")
     for target in supported_platforms(CMakeToolchain)
         target_platform = CrossPlatform(BBHostPlatform() => target)
-        for vendor in (:auto, :gcc, :clang, :gcc_bootstrap, :clang_bootstrap)
+        for vendor in vendors_to_test()
             c_toolchain = CToolchain(target_platform; vendor, use_ccache=false)
             cmake_toolchain = CMakeToolchain(target_platform)
             hosttools_toolchain = HostToolsToolchain(target_platform)

BinaryBuilderToolchains.jl/test/CToolchainTests.jl

@@ -138,7 +138,7 @@ ENV["TESTSUITE_OUTPUT_DIR"] = mktempdir(;cleanup=false)
     @info("Running `\$CC` tests for $(length(supported_platforms(CToolchain))) platforms")
     for target in supported_platforms(CToolchain)
         target_platform = CrossPlatform(BBHostPlatform() => target)
-        for vendor in (:auto, :gcc, :clang, :gcc_bootstrap, :clang_bootstrap)
+        for vendor in vendors_to_test()
             toolchain = CToolchain(target_platform; vendor, use_ccache=false)
             with_toolchains([toolchain, htt_toolchain]) do prefix, env
                 @testset "$(triplet(target)) - $(vendor)" begin

BinaryBuilderToolchains.jl/test/common.jl

@@ -8,6 +8,15 @@ function capture_output(cmd)
     return p, output
 end
 
+function vendors_to_test(curr_arch = arch(BBHostPlatform()))
+    # Only test the `*_bootstrap` vendors on x86_64, where I actually did the bootstrapping.
+    if curr_arch == "x86_64"
+        return (:auto, :gcc, :clang, :gcc_bootstrap, :clang_bootstrap)
+    else
+        return (:auto, :gcc, :clang)
+    end
+end
+
 function toolchain_tests(prefix, env, platform, testsuite; do_cxxabi_tests::Bool = false)
     testsuite_path = joinpath(@__DIR__, "testsuite", testsuite)
     cd(testsuite_path) do