[winpr,path] add Cwalk dependency

cmake/ExternalProjectCwalk.cmake

@@ -0,0 +1,28 @@
+# Include Cwalk library as external project.
+#
+# Download from github and build the library.
+include(FetchContent)
+
+# Disable -Werror for cwalk build unless we have set it
+if (NOT ENABLE_WARNING_ERROR)
+    set(IGNORE_WARNINGS ON CACHE INTERNAL "[Cwalk] cached build variable")
+endif()
+
+# If there is already a local copy of cwalk use it
+if (EXISTS ${CMAKE_SOURCE_DIR}/external/cwalk)
+    set(FETCHCONTENT_SOURCE_DIR_CWALK ${CMAKE_SOURCE_DIR}/external/cwalk)
+endif()
+
+FetchContent_Declare(
+  Cwalk
+  # URL https://github.com/likle/cwalk/archive/refs/tags/v1.2.9.tar.gz
+  # URL_HASH SHA256=54f160031687ec90a414e0656cf6266445207cb91b720dacf7a7c415d6bc7108
+
+  GIT_REPOSITORY https://github.com/likle/cwalk.git
+  GIT_TAG v1.2.9
+  GIT_SHALLOW ON
+  OVERRIDE_FIND_PACKAGE
+)
+
+FetchContent_MakeAvailable(Cwalk)
+

winpr/CMakeLists.txt

@@ -18,6 +18,8 @@
 # Include our extra modules
 set(CMAKE_MODULE_PATH ${CMAKE_CURRENT_SOURCE_DIR}/../cmake/)
 
+include(ExternalProjectCwalk)
+
 if (NOT FREERDP_UNIFIED_BUILD)
 	cmake_minimum_required(VERSION 3.13)
 

winpr/libwinpr/file/CMakeLists.txt

@@ -23,6 +23,8 @@ winpr_module_add(
     file.c
 )
 
+winpr_library_add_private(cwalk)
+
 if(BUILD_TESTING_INTERNAL OR BUILD_TESTING)
 	add_subdirectory(test)
 endif()