LINK_OPTIONS: Add new family of properties

This family enable to manage link flags

Three new properties:
* directory property: LINK_OPTIONS
* target properties: LINK_OPTIONS and INTERFACE_LINK_OPTIONS

Two new commands
* add_link_options(): to populate directory property
* target_link_options(): to populate target properties

Fixes: #16543

1 files changed, 41 insertions, 0 deletions

diff --git a/Source/cmTargetLinkOptionsCommand.cxx b/Source/cmTargetLinkOptionsCommand.cxx
new file mode 100644
index 0000000..f0f13fd
--- /dev/null
+++ b/Source/cmTargetLinkOptionsCommand.cxx
@@ -0,0 +1,41 @@
+/* Distributed under the OSI-approved BSD 3-Clause License.  See accompanying
+   file Copyright.txt or https://cmake.org/licensing for details.  */
+#include "cmTargetLinkOptionsCommand.h"
+
+#include <sstream>
+
+#include "cmAlgorithms.h"
+#include "cmListFileCache.h"
+#include "cmMakefile.h"
+#include "cmTarget.h"
+#include "cmake.h"
+
+class cmExecutionStatus;
+
+bool cmTargetLinkOptionsCommand::InitialPass(
+  std::vector<std::string> const& args, cmExecutionStatus&)
+{
+  return this->HandleArguments(args, "LINK_OPTIONS", PROCESS_BEFORE);
+}
+
+void cmTargetLinkOptionsCommand::HandleMissingTarget(const std::string& name)
+{
+  std::ostringstream e;
+  e << "Cannot specify link options for target \"" << name
+    << "\" which is not built by this project.";
+  this->Makefile->IssueMessage(cmake::FATAL_ERROR, e.str());
+}
+
+std::string cmTargetLinkOptionsCommand::Join(
+  const std::vector<std::string>& content)
+{
+  return cmJoin(content, ";");
+}
+
+bool cmTargetLinkOptionsCommand::HandleDirectContent(
+  cmTarget* tgt, const std::vector<std::string>& content, bool, bool)
+{
+  cmListFileBacktrace lfbt = this->Makefile->GetBacktrace();
+  tgt->InsertLinkOption(this->Join(content), lfbt);
+  return true; // Successfully handled.
+}