deps: move json/httplib to CPM

.gitmodules

@@ -13,12 +13,3 @@
 [submodule "ext/nativefiledialog-extended"]
 	path = ext/nativefiledialog-extended
 	url = https://github.com/btzy/nativefiledialog-extended.git
-[submodule "assets/asm/usdasm"]
-	path = assets/asm/usdasm
-	url = https://github.com/spannerisms/usdasm.git
-[submodule "ext/json"]
-	path = ext/json
-	url = https://github.com/nlohmann/json.git
-[submodule "ext/httplib"]
-	path = ext/httplib
-	url = https://github.com/yhirose/cpp-httplib.git

cmake/CPM.cmake

@@ -35,8 +35,12 @@ endif()
 include(${CPM_DOWNLOAD_LOCATION})
 
 # Set CPM options for better caching and performance
-set(CPM_USE_LOCAL_PACKAGES ON)
-set(CPM_LOCAL_PACKAGES_ONLY OFF)
+if(NOT DEFINED CPM_USE_LOCAL_PACKAGES)
+  set(CPM_USE_LOCAL_PACKAGES OFF)
+endif()
+if(NOT DEFINED CPM_LOCAL_PACKAGES_ONLY)
+  set(CPM_LOCAL_PACKAGES_ONLY OFF)
+endif()
 set(CPM_DONT_CREATE_PACKAGE_LOCK ON)
 set(CPM_DONT_UPDATE_MODULE_PATH ON)
 set(CPM_DONT_PREPEND_TO_MODULE_PATH ON)
@@ -46,4 +50,3 @@ if(DEFINED ENV{GITHUB_ACTIONS})
   set(CPM_SOURCE_CACHE "$ENV{HOME}/.cpm-cache")
   message(STATUS "CPM cache directory: ${CPM_SOURCE_CACHE}")
 endif()
-

cmake/dependencies.cmake

@@ -8,6 +8,9 @@ include(cmake/dependencies.lock)
 
 message(STATUS "=== Setting up YAZE dependencies with CPM.cmake ===")
 
+# Only prefer local/system packages when explicitly requested.
+set(CPM_USE_LOCAL_PACKAGES ${YAZE_USE_SYSTEM_DEPS} CACHE BOOL "" FORCE)
+
 # Clear any previous dependency targets
 set(YAZE_ALL_DEPENDENCIES "")
 set(YAZE_SDL2_TARGETS "")
@@ -15,6 +18,7 @@ set(YAZE_YAML_TARGETS "")
 set(YAZE_IMGUI_TARGETS "")
 set(YAZE_IMPLOT_TARGETS "")
 set(YAZE_JSON_TARGETS "")
+set(YAZE_HTTPLIB_TARGETS "")
 set(YAZE_GRPC_TARGETS "")
 set(YAZE_FTXUI_TARGETS "")
 set(YAZE_TESTING_TARGETS "")
@@ -54,6 +58,12 @@ if(YAZE_ENABLE_JSON)
   list(APPEND YAZE_ALL_DEPENDENCIES ${YAZE_JSON_TARGETS})
 endif()
 
+# Native HTTP/HTTPS (cpp-httplib) for non-WASM builds
+if(NOT EMSCRIPTEN)
+  include(cmake/dependencies/httplib.cmake)
+  list(APPEND YAZE_ALL_DEPENDENCIES ${YAZE_HTTPLIB_TARGETS})
+endif()
+
 # CRITICAL: Load testing dependencies BEFORE gRPC when both are enabled
 # This ensures gmock is available before Abseil (bundled with gRPC) tries to export test_allocator
 # which depends on gmock. This prevents CMake export errors.
@@ -95,6 +105,9 @@ endif()
 if(YAZE_ENABLE_GRPC)
   message(STATUS "gRPC: ${YAZE_GRPC_TARGETS}")
 endif()
+if(NOT EMSCRIPTEN)
+  message(STATUS "httplib: ${YAZE_HTTPLIB_TARGETS}")
+endif()
 if(YAZE_BUILD_CLI AND NOT EMSCRIPTEN)
   message(STATUS "FTXUI: ${YAZE_FTXUI_TARGETS}")
 endif()

cmake/dependencies.lock

@@ -5,6 +5,8 @@
 # Core dependencies
 set(SDL2_VERSION "2.30.0" CACHE STRING "SDL2 version")
 set(YAML_CPP_VERSION "0.8.0" CACHE STRING "yaml-cpp version")
+set(NLOHMANN_JSON_VERSION "3.11.3" CACHE STRING "nlohmann/json version")
+set(HTTPLIB_VERSION "0.26.0" CACHE STRING "cpp-httplib version")
 
 # gRPC and related
 # Using v1.67.1 for MSVC compatibility (v1.75.1 has UPB compilation errors on Windows)
@@ -26,4 +28,3 @@ set(IMGUI_VERSION "1.90.4" CACHE STRING "Dear ImGui version")
 
 # ASAR
 set(ASAR_VERSION "main" CACHE STRING "ASAR version")
-

cmake/dependencies/httplib.cmake

@@ -0,0 +1,55 @@
+# cpp-httplib dependency management
+
+if(EMSCRIPTEN)
+  set(YAZE_HTTPLIB_TARGETS "" CACHE INTERNAL "cpp-httplib targets")
+  return()
+endif()
+
+include(cmake/CPM.cmake)
+include(cmake/dependencies.lock)
+
+message(STATUS "Setting up cpp-httplib ${HTTPLIB_VERSION}")
+
+set(_YAZE_USE_SYSTEM_HTTPLIB ${YAZE_USE_SYSTEM_DEPS})
+
+# Try to use system packages first
+if(_YAZE_USE_SYSTEM_HTTPLIB)
+  find_package(httplib QUIET)
+  if(httplib_FOUND)
+    message(STATUS "Using system httplib")
+    set(YAZE_HTTPLIB_TARGETS httplib::httplib CACHE INTERNAL "cpp-httplib targets")
+    return()
+  elseif(YAZE_USE_SYSTEM_DEPS)
+    message(WARNING "System httplib not found despite YAZE_USE_SYSTEM_DEPS=ON; falling back to CPM download")
+  endif()
+endif()
+
+CPMAddPackage(
+  NAME httplib
+  VERSION ${HTTPLIB_VERSION}
+  GITHUB_REPOSITORY yhirose/cpp-httplib
+  GIT_TAG v${HTTPLIB_VERSION}
+  OPTIONS
+    "HTTPLIB_INSTALL OFF"
+    "HTTPLIB_TEST OFF"
+    "HTTPLIB_COMPILE OFF"
+    "HTTPLIB_USE_OPENSSL_IF_AVAILABLE OFF"
+    "HTTPLIB_USE_ZLIB_IF_AVAILABLE OFF"
+    "HTTPLIB_USE_BROTLI_IF_AVAILABLE OFF"
+    "HTTPLIB_USE_ZSTD_IF_AVAILABLE OFF"
+)
+
+# Verify target is available
+if(TARGET httplib::httplib)
+  message(STATUS "httplib::httplib target found")
+elseif(TARGET httplib)
+  add_library(httplib::httplib ALIAS httplib)
+  message(STATUS "Created httplib::httplib alias")
+else()
+  message(FATAL_ERROR "httplib target not found after CPM fetch")
+endif()
+
+set(YAZE_HTTPLIB_TARGETS httplib::httplib)
+set(YAZE_HTTPLIB_TARGETS httplib::httplib CACHE INTERNAL "cpp-httplib targets")
+
+message(STATUS "cpp-httplib setup complete")

cmake/dependencies/json.cmake

@@ -4,14 +4,43 @@ if(NOT YAZE_ENABLE_JSON)
   return()
 endif()
 
-message(STATUS "Setting up nlohmann_json with local ext directory")
+include(cmake/CPM.cmake)
+include(cmake/dependencies.lock)
+
+message(STATUS "Setting up nlohmann_json ${NLOHMANN_JSON_VERSION}")
+
+set(_YAZE_USE_SYSTEM_JSON ${YAZE_USE_SYSTEM_DEPS})
+
+if(NOT _YAZE_USE_SYSTEM_JSON)
+  unset(nlohmann_json_DIR CACHE)
+endif()
+
+# Try to use system packages first
+if(_YAZE_USE_SYSTEM_JSON)
+  find_package(nlohmann_json QUIET)
+  if(nlohmann_json_FOUND)
+    message(STATUS "Using system nlohmann_json")
+    set(YAZE_JSON_TARGETS nlohmann_json::nlohmann_json CACHE INTERNAL "nlohmann_json targets")
+    return()
+  elseif(YAZE_USE_SYSTEM_DEPS)
+    message(WARNING "System nlohmann_json not found despite YAZE_USE_SYSTEM_DEPS=ON; falling back to CPM download")
+  endif()
+endif()
 
-# Use the bundled nlohmann_json from ext/json
 set(JSON_BuildTests OFF CACHE BOOL "" FORCE)
 set(JSON_Install OFF CACHE BOOL "" FORCE)
 set(JSON_MultipleHeaders OFF CACHE BOOL "" FORCE)
 
-add_subdirectory(${CMAKE_SOURCE_DIR}/ext/json EXCLUDE_FROM_ALL)
+CPMAddPackage(
+  NAME nlohmann_json
+  VERSION ${NLOHMANN_JSON_VERSION}
+  GITHUB_REPOSITORY nlohmann/json
+  GIT_TAG v${NLOHMANN_JSON_VERSION}
+  OPTIONS
+    "JSON_BuildTests OFF"
+    "JSON_Install OFF"
+    "JSON_MultipleHeaders OFF"
+)
 
 # Verify target is available
 if(TARGET nlohmann_json::nlohmann_json)
@@ -21,11 +50,11 @@ elseif(TARGET nlohmann_json)
   add_library(nlohmann_json::nlohmann_json ALIAS nlohmann_json)
   message(STATUS "Created nlohmann_json::nlohmann_json alias")
 else()
-  message(FATAL_ERROR "nlohmann_json target not found after add_subdirectory")
+  message(FATAL_ERROR "nlohmann_json target not found after CPM fetch")
 endif()
 
 # Export for use in other CMake files
+set(YAZE_JSON_TARGETS nlohmann_json::nlohmann_json)
 set(YAZE_JSON_TARGETS nlohmann_json::nlohmann_json CACHE INTERNAL "nlohmann_json targets")
 
 message(STATUS "nlohmann_json setup complete")
-