Source/cmLinkDirectoriesCommand.cxx

   1 /* Distributed under the OSI-approved BSD 3-Clause License.  See accompanying
   2    file Copyright.txt or https://cmake.org/licensing for details.  */
   3 #include "cmLinkDirectoriesCommand.h"
   4
   5 #include <sstream>
   6
   7 #include "cmExecutionStatus.h"
   8 #include "cmGeneratorExpression.h"
   9 #include "cmList.h"
  10 #include "cmMakefile.h"
  11 #include "cmMessageType.h"
  12 #include "cmPolicies.h"
  13 #include "cmStringAlgorithms.h"
  14 #include "cmSystemTools.h"
  15
  16 static void AddLinkDir(cmMakefile& mf, std::string const& dir,
  17                        std::vector<std::string>& directories);
  18
  19 bool cmLinkDirectoriesCommand(std::vector<std::string> const& args,
  20                               cmExecutionStatus& status)
  21 {
  22   if (args.empty()) {
  23     return true;
  24   }
  25
  26   cmMakefile& mf = status.GetMakefile();
  27   bool before = mf.IsOn("CMAKE_LINK_DIRECTORIES_BEFORE");
  28
  29   auto i = args.cbegin();
  30   if ((*i) == "BEFORE") {
  31     before = true;
  32     ++i;
  33   } else if ((*i) == "AFTER") {
  34     before = false;
  35     ++i;
  36   }
  37
  38   std::vector<std::string> directories;
  39   for (; i != args.cend(); ++i) {
  40     AddLinkDir(mf, *i, directories);
  41   }
  42
  43   mf.AddLinkDirectory(cmList::to_string(directories), before);
  44
  45   return true;
  46 }
  47
  48 static void AddLinkDir(cmMakefile& mf, std::string const& dir,
  49                        std::vector<std::string>& directories)
  50 {
  51   std::string unixPath = dir;
  52   cmSystemTools::ConvertToUnixSlashes(unixPath);
  53   if (!cmSystemTools::FileIsFullPath(unixPath) &&
  54       !cmGeneratorExpression::StartsWithGeneratorExpression(unixPath)) {
  55     bool convertToAbsolute = false;
  56     std::ostringstream e;
  57     /* clang-format off */
  58     e << "This command specifies the relative path\n"
  59       << "  " << unixPath << "\n"
  60       << "as a link directory.\n";
  61     /* clang-format on */
  62     switch (mf.GetPolicyStatus(cmPolicies::CMP0015)) {
  63       case cmPolicies::WARN:
  64         e << cmPolicies::GetPolicyWarning(cmPolicies::CMP0015);
  65         mf.IssueMessage(MessageType::AUTHOR_WARNING, e.str());
  66         CM_FALLTHROUGH;
  67       case cmPolicies::OLD:
  68         // OLD behavior does not convert
  69         break;
  70       case cmPolicies::REQUIRED_IF_USED:
  71       case cmPolicies::REQUIRED_ALWAYS:
  72         e << cmPolicies::GetRequiredPolicyError(cmPolicies::CMP0015);
  73         mf.IssueMessage(MessageType::FATAL_ERROR, e.str());
  74         CM_FALLTHROUGH;
  75       case cmPolicies::NEW:
  76         // NEW behavior converts
  77         convertToAbsolute = true;
  78         break;
  79     }
  80     if (convertToAbsolute) {
  81       unixPath = cmStrCat(mf.GetCurrentSourceDirectory(), '/', unixPath);
  82     }
  83   }
  84   directories.push_back(unixPath);
  85 }