Document ENABLE_EXPORTS behavior on Mac (#11295)

Mention that it is implemented with -bundle-loader on platforms that
need link-time symbol resolution but that do not use DLL import libs.

1 files changed, 8 insertions, 4 deletions

diff --git a/Source/cmTarget.cxx b/Source/cmTarget.cxx
index 3ee329f..5380257 100644
--- a/Source/cmTarget.cxx
+++ b/Source/cmTarget.cxx
@@ -834,12 +834,16 @@ void cmTarget::DefineProperties(cmake *cm)
      "executable with the TARGET_LINK_LIBRARIES command.  "
      "On all platforms a target-level dependency on the executable is "
      "created for targets that link to it.  "
-     "For non-DLL platforms the link rule is simply ignored since "
-     "the dynamic loader will automatically bind symbols when the "
-     "module is loaded.  "
      "For DLL platforms an import library will be created for the "
      "exported symbols and then used for linking.  "
-     "All Windows-based systems including Cygwin are DLL platforms.");
+     "All Windows-based systems including Cygwin are DLL platforms.  "
+     "For non-DLL platforms that require all symbols to be resolved at "
+     "link time, such as Mac OS X, the module will \"link\" to the "
+     "executable using a flag like \"-bundle_loader\".  "
+     "For other non-DLL platforms the link rule is simply ignored since "
+     "the dynamic loader will automatically bind symbols when the "
+     "module is loaded.  "
+      );
 
   cm->DefineProperty
     ("Fortran_MODULE_DIRECTORY", cmProperty::TARGET,