50 lines
1 KiB
Perl
50 lines
1 KiB
Perl
Tests for dynamic dependencies computed from the `%{read:...}` family of macros
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$ cat > dune-project <<EOF
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> (lang dune 3.0)
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> EOF
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Define rules have dynamic file dependencies
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$ cat > dune <<EOF
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> (rule
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> (target deps.d)
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> (action
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> (system "echo 'depA\ndepB' > %{target}")))
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>
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> (rule
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> (target depA)
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> (action
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> (system "echo contentsA > %{target}")))
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>
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> (rule
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> (target depB)
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> (action
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> (system "echo contentsB > %{target}")))
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> EOF
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Now we define a rule that reads `deps.d` to figure out what to build.
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$ cat >> dune <<EOF
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> (rule
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> (target output)
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> (deps %{read-lines:./deps.d})
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> (action
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> (progn
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> (system "cat %{deps}")
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> (system "echo %{deps} > %{target}"))))
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> EOF
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Building `./output` should now produce a file with contents "depA depB"
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$ dune build ./output --display=short
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sh deps.d
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sh depA
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sh depB
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sh output
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contentsA
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contentsB
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sh output
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$ cat ./_build/default/output
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depA depB
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