info-tool: add simple json-like information query

CMakeLists.txt

@@ -91,6 +91,8 @@ list (APPEND sources
 
 ##-----------------------------------------------------------------------------
 add_library (cruft-vk STATIC ${sources})
+target_link_libraries (cruft-vk cruft-util vulkan)
+
 
 ###############################################################################
 get_directory_property (HAS_PARENT PARENT_DIRECTORY)
@@ -99,6 +101,18 @@ if (HAS_PARENT)
 endif ()
 
 
+###############################################################################
+foreach (t info)
+    add_executable (vk_${t} "tools/${t}.cpp")
+        set_target_properties(vk_${t} PROPERTIES
+            OUTPUT_NAME
+            ${t})
+        set_target_properties(vk_${t} PROPERTIES
+            RUNTIME_OUTPUT_DIRECTORY
+            "${CMAKE_CURRENT_BINARY_DIR}/tools")
+    target_link_libraries (vk_${t} cruft-vk)
+endforeach ()
+
 ###############################################################################
 configure_file(libcruft-vk-system.pc.in libcruft-vk.pc)
 configure_file(Doxyfile.in Doxyfile)

tools/info.cpp

@@ -0,0 +1,36 @@
+/*
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * Copyright:
+ *      2017, Danny Robson <danny@nerdcruft.net>
+ */
+
+#include <cruft/vk/instance.hpp>
+#include <cruft/vk/physical_device.hpp>
+#include <cruft/vk/ostream.hpp>
+
+#include <iostream>
+
+///////////////////////////////////////////////////////////////////////////////
+int
+main (int, char**)
+{
+    cruft::vk::instance instance (cruft::vk::instance::create_info {});
+    std::cout << "instance: " << instance << '\n';
+
+    auto devices = cruft::vk::physical_device::find (instance);
+
+    for (const auto &d: devices) {
+        std::cout << d << '\n';
+    }
+}