CODEWITHSUNDEEP
bashbazel
Sagre
Sagre

Reputation: 482

Bazel genrule: Use linebreaks in command

I use a genrule with a lot of sources, that have a long identifier. The command needs to list all sources explicitely, which would result in a reeaally long cmd. Therefore I tried to use linebreaks (as known from bash or shell commands)... However, bazel complains about unterminated strings. 

genrule(
  name = "Aggregate_Reports",
  srcs = ["//really/long/path/to/module/ModuleA/src:CoverageHtml",
          "//really/long/path/to/module/ModuleA/src:TestRun",
          "//really/long/path/to/module/ModuleB/src:CoverageHtml",],
  outs = ["UT_Summary.txt"],
  message = "Create unified report",
  tools = [":Create_Summary"],
  cmd = "$(location :Create_Summary) -t \
              $(location //really/long/path/to/module/ModuleA/src:TestRun) \
              $(location //really/long/path/to/module/ModuleB/src:TestRun) \
                                     -c \
              $(location //really/long/path/to/module/ModuleA/src:CoverageHtml) \
              $(location //really/long/path/to/module/ModuleB/src:CoverageHtml) \
              -o $(@)",
  executable = True,
  visibility=["//visibility:public"],
)

Escaping the \ with $ does not change anything...

Upvotes: 0

Views: 1007

Answers (1)

ahumesky
ahumesky

Reputation: 5006

As in Python, you can use triple-quotes to preserve the newlines:

  cmd = """$(location :Create_Summary) -t \
              $(location //really/long/path/to/module/ModuleA/src:TestRun) \
              $(location //really/long/path/to/module/ModuleB/src:TestRun) \
                                     -c \
              $(location //really/long/path/to/module/ModuleA/src:CoverageHtml) \
              $(location //really/long/path/to/module/ModuleB/src:CoverageHtml) \
              -o $(@)""",

Upvotes: 2

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