Cannot open included file

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Thanks for your input. You’re suggesting I should add something to the first set of options, fortran.linter.extraArgs ? What could I be missing ? I already have

      "-I${workspaceFolder}/.vscode/linter",
      "-I${workspaceFolder}/**",
      "-I${workspaceFolder}\\**",
      "-I./**",
      "-I.\\**",

Ideed, adding "-I./lib" makes the whole thing work, but I’m unsure why

      "-I${workspaceFolder}/**",
      "-I${workspaceFolder}\\**",
      "-I./**",
      "-I.\\**",

is not enough already ? Does anyone have any idea ?