bazel build points to builder directory _opt_bblocal_var_buildworker_ports_build_ports_devel_bazel

[Christopher Jones]

> On 14 Jan 2022, at 3:14 am, Steven Smith <steve.t.smith at gmail.com> wrote:
> 
> I’m trying to build/update py-tensforflow-metadat and am hitting this (bizarre) bazel issue.
> 
> First, the build fails with the error:
> 
>> :info:build Execution platform: @local_config_platform//:host
>> :info:build Use --sandbox_debug to see verbose messages from the sandbox
>> :info:build xcrun: error: can't exec '/opt/local/var/macports/build/_opt_bblocal_var_buildworker_ports_build_ports_devel_bazel/bazel-3.7/work/bazelwrap/cc' (errno=No such file or directory)
> 
> 
> Weird that bazel wants to look in a MacPorts build directory.
> 
> Searching for this string in ${worksrcpath}, it appears in the file created during the build stage:
> 
> ${worksrcpath}/bazel_build/install/<hash>/embedded_tools/tools/osx/crosstool/wrapped_clang.cc <http://wrapped_clang.cc/>:
> 
>>   if (binary_name == "wrapped_clang_pp") {
>>     tool_name = "/opt/local/var/macports/build/_opt_bblocal_var_buildworker_ports_build_ports_devel_bazel/bazel-3.7/work/bazelwrap/cxx";
>>   } else if (binary_name == "wrapped_clang") {
>>     tool_name = "/opt/local/var/macports/build/_opt_bblocal_var_buildworker_ports_build_ports_devel_bazel/bazel-3.7/work/bazelwrap/cc";
> 
> This is not the file from https://github.com/bazelbuild/bazel/blob/master/tools/osx/crosstool/wrapped_clang.cc <https://github.com/bazelbuild/bazel/blob/master/tools/osx/crosstool/wrapped_clang.cc>
> 
> I’m stumped. Does anyone have insight on what’s causing this weird bazel build issue?
> 

The above is intentional, and performed by the bazel build to (attempt) to work around issues with the bazel build on older systems, which is spectacularly difficult to work with . Specifically see

https://github.com/macports/macports-ports/blob/6569ac3bcc84a00f72513d0f8ceebb6b6cec1576/devel/bazel/Portfile#L259 <https://github.com/macports/macports-ports/blob/6569ac3bcc84a00f72513d0f8ceebb6b6cec1576/devel/bazel/Portfile#L259>

why you see the above I cannot say. Please also post a complete log, not just snippets like above.

is there a specific reason you are building bazel-3.7 from source ? binary tarballs are availing for 10.11 and newer

https://ports.macports.org/port/bazel-3.7/details/ <https://ports.macports.org/port/bazel-3.7/details/>

Chris


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