search

bazelbuild / examples

Examples for Bazel
http://bazel.build
Apache License 2.0
800 stars 497 forks source link

cpp-tutorial doesn't work on AArch64 systems #384

Open stevecapperarm opened 6 months ago

stevecapperarm commented 6 months ago

Hello, I was following the Bazel C++ build tutorial, and for stage1, I got the following:

$ bazel build //main:hello-world
Starting local Bazel server and connecting to it...
ERROR: While resolving toolchains for target //main:hello-world: No matching toolchains found for types @bazel_tools//tools/cpp:toolchain_type. Maybe --incompatible_use_cc_configure_from_rules_cc has been flipped and there is no default C++ toolchain added in the WORKSPACE file? See https://github.com/bazelbuild/bazel/issues/10134 for details and migration instructions.
ERROR: Analysis of target '//main:hello-world' failed; build aborted: No matching toolchains found for types @bazel_tools//tools/cpp:toolchain_type. Maybe --incompatible_use_cc_configure_from_rules_cc has been flipped and there is no default C++ toolchain added in the WORKSPACE file? See https://github.com/bazelbuild/bazel/issues/10134 for details and migration instructions.
INFO: Elapsed time: 3.004s
INFO: 0 processes.
FAILED: Build did NOT complete successfully (12 packages loaded, 18 targets configured)

Digging into this, it appears that the WORKSPACE file has explicit references to X86 architecture. Changing this AArch64 then resulted in Bazel bombing out trying to run x86 binaries on my AArch64 system :-(. Also, the .bazelrc file was purposefully preventing the system supplied compiler from being used.

In the end I got everything working as I expected thusly,

$ rm WORKSPACE .bazelrc && touch WORKSPACE
$ bazel build //main:hello-world

Would it be possible to please simplify the tutorial to getting stuff building reliably and simply to begin with, then for folks who want to employ custom toolchains/etc have a separate stage for that?