Propagate backtraces from LINK_LIBRARIES through to link line items

Since commit d4d0dd0f6a (cmLinkLineComputer: Add ComputeLinkLibs
overload with backtraces, 2019-09-13, v3.16.0-rc1~87^2~4), backtraces
have been collected by `ComputeLinkLibs` by looking back through the
link implementation libraries for one matching the text of the link line
item.  This is slow in projects with long link lines.

Instead, teach `cmComputeLinkDepends` and `cmComputeLinkInformation` to
carry backtrace information explicitly along with the text of each item.

Fixes: #20322

1 files changed, 2 insertions, 2 deletions

diff --git a/Source/cmGlobalXCodeGenerator.cxx b/Source/cmGlobalXCodeGenerator.cxx
index 3002b2a..aee475b 100644
--- a/Source/cmGlobalXCodeGenerator.cxx
+++ b/Source/cmGlobalXCodeGenerator.cxx
@@ -2812,11 +2812,11 @@ void cmGlobalXCodeGenerator::AddDependAndLinkInformation(cmXCodeObject* target)
         linkLibs += sep;
         sep = " ";
         if (libName.IsPath) {
-          linkLibs += this->XCodeEscapePath(libName.Value);
+          linkLibs += this->XCodeEscapePath(libName.Value.Value);
         } else if (!libName.Target ||
                    libName.Target->GetType() !=
                      cmStateEnums::INTERFACE_LIBRARY) {
-          linkLibs += libName.Value;
+          linkLibs += libName.Value.Value;
         }
         if (libName.Target && !libName.Target->IsImported()) {
           target->AddDependTarget(configName, libName.Target->GetName());