layers:Remove includes of vk_safe_struct.cpp

After looking at these includes of vk_safe_struct.cpp I believe it was
just a hack that worked and has persisted in the code. This change
pulls the source into the layers that depend on it at build time and is
a better solution, in my opinion.

The one quirk is that the we now generate vk_struct.cpp in the base dir
and in the layers dir. Since the file is required by some layer shared
libs I had to generate in the layers dir, but there are also some
dependencies on the file in the top-level dir that I didn't care to
investigate further so I just genrate it in two places.
I'm sure this could be cleaned up if someone with more cmake knowledge
and/or patience than me cares to look into it further.

For the android build updated the codegen to put vk_safe_struct.cpp in
source dir so it could be added to libs from there.

build-android/android-generate.sh

@@ -19,10 +19,10 @@ dir=$(cd -P -- "$(dirname -- "$0")" && pwd -P)
 cd $dir
 
 rm -rf generated
-mkdir -p generated/include generated/common
+mkdir -p generated/include generated/common generated/source
 
 ( cd generated/include; python3 ../../../scripts/lvl_genvk.py -registry ../../../scripts/vk.xml vk_safe_struct.h )
-( cd generated/include; python3 ../../../scripts/lvl_genvk.py -registry ../../../scripts/vk.xml vk_safe_struct.cpp )
+( cd generated/source; python3 ../../../scripts/lvl_genvk.py -registry ../../../scripts/vk.xml vk_safe_struct.cpp )
 ( cd generated/include; python3 ../../../scripts/lvl_genvk.py -registry ../../../scripts/vk.xml vk_struct_size_helper.h )
 ( cd generated/include; python3 ../../../scripts/lvl_genvk.py -registry ../../../scripts/vk.xml vk_struct_size_helper.c )
 ( cd generated/include; python3 ../../../scripts/lvl_genvk.py -registry ../../../scripts/vk.xml vk_enum_string_helper.h )

build-android/jni/Android.mk

@@ -38,8 +38,10 @@ LOCAL_SRC_FILES += $(SRC_DIR)/layers/descriptor_sets.cpp
 LOCAL_SRC_FILES += $(SRC_DIR)/layers/buffer_validation.cpp
 LOCAL_SRC_FILES += $(SRC_DIR)/layers/shader_validation.cpp
 LOCAL_SRC_FILES += $(SRC_DIR)/layers/vk_layer_table.cpp
+LOCAL_SRC_FILES += $(LAYER_DIR)/source/vk_safe_struct.cpp
 LOCAL_C_INCLUDES += $(SRC_DIR)/include \
                     $(SRC_DIR)/layers \
+                    $(LAYER_DIR)/source \
                     $(LAYER_DIR)/include \
                     $(SRC_DIR)/loader \
                     $(ANDROID_DIR)/external/glslang \
@@ -100,9 +102,11 @@ include $(CLEAR_VARS)
 LOCAL_MODULE := VkLayer_unique_objects
 LOCAL_SRC_FILES += $(SRC_DIR)/layers/unique_objects.cpp
 LOCAL_SRC_FILES += $(SRC_DIR)/layers/vk_layer_table.cpp
+LOCAL_SRC_FILES += $(LAYER_DIR)/source/vk_safe_struct.cpp
 LOCAL_C_INCLUDES += $(SRC_DIR)/include \
                     $(SRC_DIR)/layers \
                     $(LAYER_DIR)/include \
+                    $(LAYER_DIR)/source \
                     $(SRC_DIR)/loader
 LOCAL_STATIC_LIBRARIES += layer_utils
 LOCAL_CPPFLAGS += -DVK_USE_PLATFORM_ANDROID_KHR -fvisibility=hidden

layers/CMakeLists.txt

@@ -160,6 +160,8 @@ run_vk_xml_generate(parameter_validation_generator.py parameter_validation.h)
 run_vk_xml_generate(unique_objects_generator.py unique_objects_wrappers.h)
 run_vk_xml_generate(dispatch_table_helper_generator.py vk_dispatch_table_helper.h)
 
+run_vk_xml_generate(helper_file_generator.py vk_safe_struct.cpp)
+
 # Layer Utils Library
 # For Windows, we use a static lib because the Windows loader has a fairly restrictive loader search
 # path that can't be easily modified to point it to the same directory that contains the layers.
@@ -173,11 +175,11 @@ else()
 endif()
 add_dependencies(VkLayer_utils generate_helper_files)
 
-add_vk_layer(core_validation core_validation.cpp vk_layer_table.cpp descriptor_sets.cpp buffer_validation.cpp shader_validation.cpp)
+add_vk_layer(core_validation core_validation.cpp vk_layer_table.cpp descriptor_sets.cpp buffer_validation.cpp shader_validation.cpp vk_safe_struct.cpp)
 add_vk_layer(object_tracker object_tracker.cpp vk_layer_table.cpp)
 # generated
 add_vk_layer(threading threading.cpp thread_check.h vk_layer_table.cpp)
-add_vk_layer(unique_objects unique_objects.cpp unique_objects_wrappers.h vk_layer_table.cpp)
+add_vk_layer(unique_objects unique_objects.cpp unique_objects_wrappers.h vk_layer_table.cpp vk_safe_struct.cpp)
 add_vk_layer(parameter_validation parameter_validation.cpp parameter_validation.h vk_layer_table.cpp)
 
 # Core validation has additional dependencies

layers/core_validation.cpp

@@ -92,9 +92,6 @@ std::string to_string(T var) {
 }
 #endif
 
-// This intentionally includes a cpp file
-#include "vk_safe_struct.cpp"
-
 namespace core_validation {
 
 using std::unordered_map;

layers/unique_objects.cpp

@@ -48,9 +48,6 @@
 #include "vk_object_types.h"
 #include "vulkan/vk_layer.h"
 
-// This intentionally includes a cpp file
-#include "vk_safe_struct.cpp"
-
 #include "unique_objects_wrappers.h"
 
 namespace unique_objects {