Support job pools in custom commands and targets

Provide a way for custom commands and targets to set the pool variable
of the ninja build statement. Setting `JOB_POOL` is not compatible with
`USES_TERMINAL`, which implies the `console` pool.

The option is silently ignored with other generators.

Closes: #18483

1 files changed, 5 insertions, 0 deletions

diff --git a/Source/cmCustomCommand.h b/Source/cmCustomCommand.h
index 50f15a46fd..9a6f2390c6 100644
--- a/Source/cmCustomCommand.h
+++ b/Source/cmCustomCommand.h
@@ -89,6 +89,10 @@ public:
   const std::string& GetDepfile() const;
   void SetDepfile(const std::string& depfile);
 
+  /** Set/Get the job_pool (used by the Ninja generator) */
+  const std::string& GetJobPool() const;
+  void SetJobPool(const std::string& job_pool);
+
 private:
   std::vector<std::string> Outputs;
   std::vector<std::string> Byproducts;
@@ -99,6 +103,7 @@ private:
   std::string Comment;
   std::string WorkingDirectory;
   std::string Depfile;
+  std::string JobPool;
   bool HaveComment = false;
   bool EscapeAllowMakeVars = false;
   bool EscapeOldStyle = true;