在构建过程中，Fuchsia OS fx集失败

Question

在完成started.md中提到的安装步骤之后

我使用了命令fx set x64，它在build/gn/preprocess_products.py文件中产生了一个错误。

错误信息如下所示-

(base) xprilion@xl:~/fuchsia$ fx set x64
+ /home/xprilion/fuchsia/scripts/build-zircon.sh -v -g -t x64
+ /home/xprilion/fuchsia/zircon/prebuilt/downloads/gn gen /home/xprilion/fuchsia/out/build-zircon --root=/home/xprilion/fuchsia/zircon
Done. Made 12304 targets from 900 files in 3216ms
+ /home/xprilion/fuchsia/buildtools/gn gen /home/xprilion/fuchsia/out/x64 --check '--args=target_cpu="x64" import("//boards/x64.gni") import("//products/core.gni") if (!defined(available)) { available = [] } available+=[] if (!defined(preinstall)) { preinstall = [] } preinstall+=[] if (!defined(monolith)) { monolith = [] } monolith+=[]'
ERROR at //build/gn/packages.gni:71:26: Script returned non-zero exit code.
_preprocessed_products = exec_script("preprocess_products.py",
                         ^----------
Current dir: /home/xprilion/fuchsia/out/x64/
Command: /usr/bin/env /home/xprilion/fuchsia/build/gn/preprocess_products.py --monolith=["garnet/packages/products/base", "garnet/packages/prod/drivers"] --preinstall=[] --available=["garnet/packages/prod/vboot_reference", "bundles/tools"]
Returned 1.
stderr:

Traceback (most recent call last):
  File "/home/xprilion/fuchsia/build/gn/preprocess_products.py", line 11, in <module>
    from prepreprocess_build_packages import PackageImportsResolver, PackageLabelObserver
  File "/home/xprilion/fuchsia/build/gn/prepreprocess_build_packages.py", line 74
    except IOError, e:
                  ^
SyntaxError: invalid syntax

See //build/gn/BUILD.gn:7:1: whence it was imported.
import("//build/gn/packages.gni")
^-------------------------------

如何删除此错误？

Answer 1

解决上述问题的方法很简单--现在在构建Fuchsia时不支持Python3.7。我换成了Python3.6，它成功了！Python2.7也能工作。

Answer 2

您在这里缺少产品信息。如果您不确定要选择哪种产品，那么至少选择core作为产品，它包含启动组件以及运行fuchsia所需的最小服务。

$ fx set core.x64