install: Implement new install(CODE|SCRIPT) option ALL_COMPONENTS

In a per-component installation the generated installation scripts
are invoked once for each component.

Per default custom installation script code added by install(CODE|SCRIPT)
only runs for one specific component in this context.

The new ALL_COMPONENTS option allows custom script code to be run once
for each component being installed.

1 files changed, 10 insertions, 2 deletions

diff --git a/Source/cmInstallCommand.cxx b/Source/cmInstallCommand.cxx
index d5d6d93..e973764 100644
--- a/Source/cmInstallCommand.cxx
+++ b/Source/cmInstallCommand.cxx
@@ -161,6 +161,7 @@ bool HandleScriptMode(std::vector<std::string> const& args,
   bool doing_script = false;
   bool doing_code = false;
   bool exclude_from_all = false;
+  bool all_components = false;
 
   // Scan the args once for COMPONENT. Only allow one.
   //
@@ -172,6 +173,8 @@ bool HandleScriptMode(std::vector<std::string> const& args,
     }
     if (args[i] == "EXCLUDE_FROM_ALL") {
       exclude_from_all = true;
+    } else if (args[i] == "ALL_COMPONENTS") {
+      all_components = true;
     }
   }
 
@@ -182,6 +185,11 @@ bool HandleScriptMode(std::vector<std::string> const& args,
     return false;
   }
 
+  if (all_components && componentCount == 1) {
+    status.SetError("ALL_COMPONENTS and COMPONENT are mutually exclusive");
+    return false;
+  }
+
   // Scan the args again, this time adding install generators each time we
   // encounter a SCRIPT or CODE arg:
   //
@@ -208,14 +216,14 @@ bool HandleScriptMode(std::vector<std::string> const& args,
       }
       helper.Makefile->AddInstallGenerator(
         cm::make_unique<cmInstallScriptGenerator>(
-          script, false, component, exclude_from_all,
+          script, false, component, exclude_from_all, all_components,
           helper.Makefile->GetBacktrace()));
     } else if (doing_code) {
       doing_code = false;
       std::string const& code = arg;
       helper.Makefile->AddInstallGenerator(
         cm::make_unique<cmInstallScriptGenerator>(
-          code, true, component, exclude_from_all,
+          code, true, component, exclude_from_all, all_components,
           helper.Makefile->GetBacktrace()));
     }
   }