Revert "Cleanup versioning strategy (#989)" (#996)

This reverts commit 12325b814f.

src/lib_json/CMakeLists.txt

@@ -45,9 +45,9 @@ set( PUBLIC_HEADERS
     ${JSONCPP_INCLUDE_DIR}/json/features.h
     ${JSONCPP_INCLUDE_DIR}/json/value.h
     ${JSONCPP_INCLUDE_DIR}/json/reader.h
-    ${JSONCPP_INCLUDE_DIR}/json/version.h
     ${JSONCPP_INCLUDE_DIR}/json/writer.h
     ${JSONCPP_INCLUDE_DIR}/json/assertions.h
+    ${PROJECT_BINARY_DIR}/include/json/version.h
     )
 
 source_group( "Public API" FILES ${PUBLIC_HEADERS} )
@@ -57,7 +57,8 @@ set(jsoncpp_sources
                 json_reader.cpp
                 json_valueiterator.inl
                 json_value.cpp
-                json_writer.cpp)
+                json_writer.cpp
+                version.h.in)
 
 # Install instructions for this target
 if(JSONCPP_WITH_CMAKE_PACKAGE)

src/lib_json/version.h.in

@@ -0,0 +1,22 @@
+// DO NOT EDIT. This file (and "version") is a template used by the build system
+// (either CMake or Meson) to generate a "version.h" header file.
+#ifndef JSON_VERSION_H_INCLUDED
+#define JSON_VERSION_H_INCLUDED
+
+#define JSONCPP_VERSION_STRING "@JSONCPP_VERSION@"
+#define JSONCPP_VERSION_MAJOR @JSONCPP_VERSION_MAJOR@
+#define JSONCPP_VERSION_MINOR @JSONCPP_VERSION_MINOR@
+#define JSONCPP_VERSION_PATCH @JSONCPP_VERSION_PATCH@
+#define JSONCPP_VERSION_QUALIFIER
+#define JSONCPP_VERSION_HEXA ((JSONCPP_VERSION_MAJOR << 24) \
+                            | (JSONCPP_VERSION_MINOR << 16) \
+                            | (JSONCPP_VERSION_PATCH << 8))
+
+#ifdef JSONCPP_USING_SECURE_MEMORY
+#undef JSONCPP_USING_SECURE_MEMORY
+#endif
+#define JSONCPP_USING_SECURE_MEMORY @JSONCPP_USE_SECURE_MEMORY@
+// If non-zero, the library zeroes any memory that it has allocated before
+// it frees its memory.
+
+#endif // JSON_VERSION_H_INCLUDED