link_directories(): enhance capabilities

1 files changed, 21 insertions, 4 deletions

diff --git a/Source/cmLinkDirectoriesCommand.cxx b/Source/cmLinkDirectoriesCommand.cxx
index 5c52c76..10425fd 100644
--- a/Source/cmLinkDirectoriesCommand.cxx
+++ b/Source/cmLinkDirectoriesCommand.cxx
@@ -4,6 +4,7 @@
 
 #include <sstream>
 
+#include "cmAlgorithms.h"
 #include "cmGeneratorExpression.h"
 #include "cmMakefile.h"
 #include "cmPolicies.h"
@@ -20,13 +21,29 @@ bool cmLinkDirectoriesCommand::InitialPass(
     return true;
   }
 
-  for (std::string const& i : args) {
-    this->AddLinkDir(i);
+  bool before = this->Makefile->IsOn("CMAKE_LINK_DIRECTORIES_BEFORE");
+
+  auto i = args.cbegin();
+  if ((*i) == "BEFORE") {
+    before = true;
+    ++i;
+  } else if ((*i) == "AFTER") {
+    before = false;
+    ++i;
+  }
+
+  std::vector<std::string> directories;
+  for (; i != args.cend(); ++i) {
+    this->AddLinkDir(*i, directories);
   }
+
+  this->Makefile->AddLinkDirectory(cmJoin(directories, ";"), before);
+
   return true;
 }
 
-void cmLinkDirectoriesCommand::AddLinkDir(std::string const& dir)
+void cmLinkDirectoriesCommand::AddLinkDir(
+  std::string const& dir, std::vector<std::string>& directories)
 {
   std::string unixPath = dir;
   cmSystemTools::ConvertToUnixSlashes(unixPath);
@@ -64,5 +81,5 @@ void cmLinkDirectoriesCommand::AddLinkDir(std::string const& dir)
       unixPath = tmp;
     }
   }
-  this->Makefile->AddLinkDirectory(unixPath);
+  directories.push_back(unixPath);
 }