Autogen: Use JSON instead of CMake script for info files

We used to store information for the _autogen target in a CMake script
file AutogenInfo.cmake, which was imported by a temporary cmake instance in
the _autogen target.  This introduced the overhead of creating a temporary
cmake instance and inherited the limitations of the CMake language which
only supports lists.

This patch introduces JSON files to pass information to AUTORCC and
autogen_ targets.  JSON files are more flexible for passing data, e.g. they
support nested lists.

The patch has the side effects that

- AutogenInfo.cmake is renamed to AutogenInfo.json
- AutogenOldSettings.txt is renamed to AutogenUsed.txt
- RCC<qrcBaseName><checksum>Info.cmake is renamed to
  AutoRcc_<qrcBaseName>_<checksum>_Info.json
- RCC<qrcBaseName><checksum>.lock is renamed to
  AutoRcc_<qrcBaseName>_<checksum>_Lock.lock
- RCC<qrcBaseName><checksum>Settings.txt is renamed to
  AutoRcc_<qrcBaseName>_<checksum>_Used.txt

1 files changed, 1 insertions, 6 deletions

diff --git a/Source/cmQtAutoRcc.h b/Source/cmQtAutoRcc.h
index 5d3bd6a..945b68f 100644
--- a/Source/cmQtAutoRcc.h
+++ b/Source/cmQtAutoRcc.h
@@ -12,8 +12,6 @@
 #include <string>
 #include <vector>
 
-class cmMakefile;
-
 /** \class cmQtAutoRcc
  * \brief AUTORCC generator
  */
@@ -28,12 +26,11 @@ public:
 
 private:
   // -- Utility
-  Logger const& Log() const { return Logger_; }
   bool IsMultiConfig() const { return MultiConfig_; }
   std::string MultiConfigOutput() const;
 
   // -- Abstract processing interface
-  bool Init(cmMakefile* makefile) override;
+  bool InitFromInfo() override;
   bool Process() override;
   // -- Settings file
   bool SettingsFileRead();
@@ -47,8 +44,6 @@ private:
   bool GenerateWrapper();
 
 private:
-  // -- Logging
-  Logger Logger_;
   // -- Config settings
   bool MultiConfig_ = false;
   // -- Directories