ENH: Allow users to specify macro-like #include line transforms for dependency scanning.

  - Define IMPLICIT_DEPENDS_INCLUDE_TRANSFORM property on targets and directories.
  - Make the directory version inherited.
  - See issue #6648.

1 files changed, 26 insertions, 0 deletions

diff --git a/Source/cmLocalUnixMakefileGenerator3.cxx b/Source/cmLocalUnixMakefileGenerator3.cxx
index 50921be..38ceba6 100644
--- a/Source/cmLocalUnixMakefileGenerator3.cxx
+++ b/Source/cmLocalUnixMakefileGenerator3.cxx
@@ -1875,6 +1875,32 @@ void cmLocalUnixMakefileGenerator3
     cmakefileStream
       << "  )\n";
     }
+
+  // Store include transform rule properties.  Write the directory
+  // rules first because they may be overridden by later target rules.
+  std::vector<std::string> transformRules;
+  if(const char* xform =
+     this->Makefile->GetProperty("IMPLICIT_DEPENDS_INCLUDE_TRANSFORM"))
+    {
+    cmSystemTools::ExpandListArgument(xform, transformRules);
+    }
+  if(const char* xform =
+     target.GetProperty("IMPLICIT_DEPENDS_INCLUDE_TRANSFORM"))
+    {
+    cmSystemTools::ExpandListArgument(xform, transformRules);
+    }
+  if(!transformRules.empty())
+    {
+    cmakefileStream
+      << "SET(CMAKE_INCLUDE_TRANSFORMS\n";
+    for(std::vector<std::string>::const_iterator tri = transformRules.begin();
+        tri != transformRules.end(); ++tri)
+      {
+      cmakefileStream << "  " << this->EscapeForCMake(tri->c_str()) << "\n";
+      }
+    cmakefileStream
+      << "  )\n";
+    }
 }
 
 //----------------------------------------------------------------------------