install: Add EXCLUDE_FROM_ALL option (#14921)

Let us take an example of a project that has some tests in a component
that need to be installed into a dedicated test package.  The user
expectation is that the result could be achieved by typing the
following:

    make
    make tests
    make install
    DESTDIR=/testpkgs make install-tests

However this results in test components in the default installation as
well as the testpkg.

Add an EXCLUDE_FROM_ALL option to the install() command to tell it that
the installation rule should not be included unless its component is
explicitly specified for installation.

1 files changed, 3 insertions, 3 deletions

diff --git a/Source/cmLocalGenerator.cxx b/Source/cmLocalGenerator.cxx
index 1d17032..6b73987 100644
--- a/Source/cmLocalGenerator.cxx
+++ b/Source/cmLocalGenerator.cxx
@@ -2557,7 +2557,7 @@ public:
     cmInstallTargetGenerator(
       t, dest, implib, "", std::vector<std::string>(), "Unspecified",
       cmInstallGenerator::SelectMessageLevel(lg->GetMakefile()),
-      false)
+      false, false)
   {
     this->Compute(lg);
   }
@@ -2584,7 +2584,7 @@ cmLocalGenerator
     // Include the user-specified pre-install script for this target.
     if(const char* preinstall = (*l)->GetProperty("PRE_INSTALL_SCRIPT"))
       {
-      cmInstallScriptGenerator g(preinstall, false, 0);
+      cmInstallScriptGenerator g(preinstall, false, 0, false);
       g.Generate(os, config, configurationTypes);
       }
 
@@ -2645,7 +2645,7 @@ cmLocalGenerator
     // Include the user-specified post-install script for this target.
     if(const char* postinstall = (*l)->GetProperty("POST_INSTALL_SCRIPT"))
       {
-      cmInstallScriptGenerator g(postinstall, false, 0);
+      cmInstallScriptGenerator g(postinstall, false, 0, false);
       g.Generate(os, config, configurationTypes);
       }
     }