executing $(location my_tool) in a genrule doesn't work if it's in the same folder #347
Description
$(location a_tool) in the cmd of a genrule doesn't add a leading ./ if the tool is in the same package, which means it doesn't work. Whether a_tool is a target or a source file doesn't seem to matter.
Example BUILD (test_tool is an empty shell script):
genrule(
name = 'my_genrule',
tools = [
'test_tool',
],
outs = [
'test_output',
],
cmd = '$(location test_tool) > $(location test_output)',
)
I end up with this error:
$ bazel build ... --verbose_failures
INFO: Found 1 target...
INFO: From Executing genrule //:my_genrule:
/bin/bash: test_tool: command not found
ERROR: /tmp/tool_test_workspace/BUILD:1:1: Executing genrule //:my_genrule failed: bash failed: error executing command
(cd /home/brian/.cache/bazel/_bazel_brian/421f2e8b7d7f6adfe83f902fa91a62f0/tool_test_workspace && \
exec env - \
PATH=/usr/local/bin:/usr/bin:/bin:/usr/local/games:/usr/games \
/bin/bash -c 'source tools/genrule/genrule-setup.sh; test_tool > bazel-out/local_linux-fastbuild/genfiles/test_output'): com.google.devtools.build.lib.shell.BadExitStatusException: Process exited with status 127: bash failed: error executing command
(cd /home/brian/.cache/bazel/_bazel_brian/421f2e8b7d7f6adfe83f902fa91a62f0/tool_test_workspace && \
exec env - \
PATH=/usr/local/bin:/usr/bin:/bin:/usr/local/games:/usr/games \
/bin/bash -c 'source tools/genrule/genrule-setup.sh; test_tool > bazel-out/local_linux-fastbuild/genfiles/test_output'): com.google.devtools.build.lib.shell.BadExitStatusException: Process exited with status 127.
Target //:my_genrule failed to build
INFO: Elapsed time: 0.096s, Critical Path: 0.01s
Moving the tool to another folder (whether that's another package or not) fixes this example.