LINK_DIRECTORIES: Add new properties and commands

These new capabilities enable to manage link directories

Two new properties:
* target properties: LINK_DIRECTORIES and INTERFACE_LINK_DIRECTORIES

One new command
* target_link_directories(): to populate target properties

Fixes: #17215

1 files changed, 61 insertions, 0 deletions

diff --git a/Source/cmTargetLinkDirectoriesCommand.cxx b/Source/cmTargetLinkDirectoriesCommand.cxx
new file mode 100644
index 0000000..bca3e45
--- /dev/null
+++ b/Source/cmTargetLinkDirectoriesCommand.cxx
@@ -0,0 +1,61 @@
+/* Distributed under the OSI-approved BSD 3-Clause License.  See accompanying
+   file Copyright.txt or https://cmake.org/licensing for details.  */
+#include "cmTargetLinkDirectoriesCommand.h"
+
+#include <sstream>
+
+#include "cmAlgorithms.h"
+#include "cmGeneratorExpression.h"
+#include "cmListFileCache.h"
+#include "cmMakefile.h"
+#include "cmSystemTools.h"
+#include "cmTarget.h"
+#include "cmake.h"
+
+class cmExecutionStatus;
+
+bool cmTargetLinkDirectoriesCommand::InitialPass(
+  std::vector<std::string> const& args, cmExecutionStatus&)
+{
+  return this->HandleArguments(args, "LINK_DIRECTORIES", PROCESS_BEFORE);
+}
+
+void cmTargetLinkDirectoriesCommand::HandleMissingTarget(
+  const std::string& name)
+{
+  std::ostringstream e;
+  e << "Cannot specify link directories for target \"" << name
+    << "\" which is not built by this project.";
+  this->Makefile->IssueMessage(cmake::FATAL_ERROR, e.str());
+}
+
+std::string cmTargetLinkDirectoriesCommand::Join(
+  const std::vector<std::string>& content)
+{
+  std::vector<std::string> directories;
+
+  for (const auto& dir : content) {
+    auto unixPath = dir;
+    cmSystemTools::ConvertToUnixSlashes(unixPath);
+    if (!cmSystemTools::FileIsFullPath(unixPath) &&
+        !cmGeneratorExpression::StartsWithGeneratorExpression(unixPath)) {
+      auto tmp = this->Makefile->GetCurrentSourceDirectory();
+      tmp += "/";
+      tmp += unixPath;
+      unixPath = tmp;
+    }
+    directories.push_back(unixPath);
+  }
+
+  return cmJoin(directories, ";");
+}
+
+bool cmTargetLinkDirectoriesCommand::HandleDirectContent(
+  cmTarget* tgt, const std::vector<std::string>& content, bool prepend, bool)
+{
+  cmListFileBacktrace lfbt = this->Makefile->GetBacktrace();
+
+  tgt->InsertLinkDirectory(this->Join(content), lfbt, prepend);
+
+  return true; // Successfully handled.
+}