运行文件位置替换 [英] Runfiles location substitution
问题描述
我正在尝试在cc_binary
规则的输出上运行qemu.为此,我创建了一个自定义规则,它非常类似于cat命令.我的文件如下:
I'm trying to run qemu on the output of a cc_binary
rule. For that I have created a custom rule, which is pretty similiar to this example, but instead of the cat
command on the txt-file, I want to invoke qemu on the output elf-file (":test_portos.elf") of the cc_binary
rule. My files are the following:
def _impl(ctx):
# The path of ctx.file.target.path is:
'bazel-out/cortex-a9-fastbuild/bin/test/test_portos.elf'
target = ctx.file.target.path
command = "qemu-system-arm -M xilinx-zynq-a9 -cpu cortex-a9 -nographic
-monitor null -serial null -semihosting
-kernel %s" % (target)
ctx.actions.write(
output=ctx.outputs.executable,
content=command,
is_executable=True)
return [DefaultInfo(
runfiles=ctx.runfiles(files=[ctx.file.target])
)]
execute = rule(
implementation=_impl,
executable=True,
attrs={
"command": attr.string(),
"target" : attr.label(cfg="data", allow_files=True,
single_file=True, mandatory=True)
},
)
已构建
load("//make:run_tests.bzl", "execute")
execute(
name = "portos",
target = ":test_portos.elf"
)
cc_binary(
name = "test_portos.elf",
srcs = glob(["*.cc"]),
deps = ["//src:portos",
"@unity//:unity"],
copts = ["-Isrc",
"-Iexternal/unity/src",
"-Iexternal/unity/extras/fixture/src"]
)
问题是,在(自定义规则的)命令中,使用了:test_portos.elf"的位置,而不是运行文件的位置.我也尝试过,如示例中所示,将$(location :test_portos.elf)
与ctx.expand_location
一起使用,但结果相同.
The problem is, that in the command (of the custom rule) the location of the ":test_portos.elf" is used and not the location of the runfile. I have also tried, like shown in the example, to use $(location :test_portos.elf)
together with ctx.expand_location
but the result was the same.
如何获取"test_portos.elf"运行文件的位置并将其插入自定义规则的命令中?
How can I get the location of the "test_portos.elf" runfile and insert it into the command of my custom rule?
推荐答案
Seems that the runfiles are safed according to the short_path of the File, so this was all I needed to change in my run_tests.bzl file:
target = ctx.file.target.short_path
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