[UPD] : update doc about file system interface

README.md

@@ -938,9 +938,28 @@ to note :
 
 </blockquote></details>
 
-<details open><summary><h2>Api's C/C++ :</h2></summary><blockquote>
+<details open><summary><h2>Custom FileSystem</h2></summary><blockquote>
 
-### the C Api
+you can use your custom file system interface.
+
+by default IGFD come with the File System Interfaces for Dirent or std::filesystem
+but you have now a FileSystem interface called IFileSystem who can be overrided with your needs
+by ex for android, emscripten, or boost
+
+2 steps :
+
+1) create a include file who must contain :
+   - your override of IGFD::IFileSystem
+   - a define of your class name in FILE_SYSTEM_OVERRIDE (ex : #define FILE_SYSTEM_OVERRIDE FileSystemBoost)
+
+2) define your file system include file path in the preprocessor var "CUSTOM_FILESYSTEM_INCLUDE"
+   ex : #define CUSTOM_FILESYSTEM_INCLUDE "src/FileSystemBoost.hpp"
+
+you can check the DemoApp who is using an override for the Boost::filesystem
+
+</blockquote></details>
+
+<details open><summary><h2>C Api :</h2></summary><blockquote>
 
 this api was sucessfully tested with CImGui
 

cmake/boost.cmake

@@ -30,41 +30,19 @@ set(BOOST_FILESYSTEM_LIBRARIES
     boost_type_traits
 )
 
-set_target_properties(boost_assert PROPERTIES FOLDER 3rdparty/boost)
-set_target_properties(boost_atomic PROPERTIES FOLDER 3rdparty/boost)
-set_target_properties(boost_chrono PROPERTIES FOLDER 3rdparty/boost)
-set_target_properties(boost_container PROPERTIES FOLDER 3rdparty/boost)
-set_target_properties(boost_context PROPERTIES FOLDER 3rdparty/boost)
-set_target_properties(boost_contract PROPERTIES FOLDER 3rdparty/boost)
-set_target_properties(boost_core PROPERTIES FOLDER 3rdparty/boost)
-set_target_properties(boost_coroutine PROPERTIES FOLDER 3rdparty/boost)
-set_target_properties(boost_date_time PROPERTIES FOLDER 3rdparty/boost)
-set_target_properties(boost_exception PROPERTIES FOLDER 3rdparty/boost)
-set_target_properties(boost_fiber PROPERTIES FOLDER 3rdparty/boost)
-set_target_properties(boost_fiber_numa PROPERTIES FOLDER 3rdparty/boost)
-set_target_properties(boost_filesystem PROPERTIES FOLDER 3rdparty/boost)
-set_target_properties(boost_graph PROPERTIES FOLDER 3rdparty/boost)
-set_target_properties(boost_iostreams PROPERTIES FOLDER 3rdparty/boost)
-set_target_properties(boost_json PROPERTIES FOLDER 3rdparty/boost)
-set_target_properties(boost_locale PROPERTIES FOLDER 3rdparty/boost)
-set_target_properties(boost_log PROPERTIES FOLDER 3rdparty/boost)
-set_target_properties(boost_log_setup PROPERTIES FOLDER 3rdparty/boost)
-set_target_properties(boost_nowide PROPERTIES FOLDER 3rdparty/boost)
-set_target_properties(boost_prg_exec_monitor PROPERTIES FOLDER 3rdparty/boost)
-set_target_properties(boost_program_options PROPERTIES FOLDER 3rdparty/boost)
-set_target_properties(boost_random PROPERTIES FOLDER 3rdparty/boost)
-set_target_properties(boost_serialization PROPERTIES FOLDER 3rdparty/boost)
-set_target_properties(boost_stacktrace_basic PROPERTIES FOLDER 3rdparty/boost)
-set_target_properties(boost_stacktrace_noop PROPERTIES FOLDER 3rdparty/boost)
-set_target_properties(boost_stacktrace_windbg PROPERTIES FOLDER 3rdparty/boost)
-set_target_properties(boost_stacktrace_windbg_cached PROPERTIES FOLDER 3rdparty/boost)
-set_target_properties(boost_system PROPERTIES FOLDER 3rdparty/boost)
-set_target_properties(boost_test_exec_monitor PROPERTIES FOLDER 3rdparty/boost)
-set_target_properties(boost_thread PROPERTIES FOLDER 3rdparty/boost)
-set_target_properties(boost_timer PROPERTIES FOLDER 3rdparty/boost)
-set_target_properties(boost_type_erasure PROPERTIES FOLDER 3rdparty/boost)
-set_target_properties(boost_unit_test_framework PROPERTIES FOLDER 3rdparty/boost)
-set_target_properties(boost_url PROPERTIES FOLDER 3rdparty/boost)
-set_target_properties(boost_variant2 PROPERTIES FOLDER 3rdparty/boost)
-set_target_properties(boost_wave PROPERTIES FOLDER 3rdparty/boost)
-set_target_properties(boost_wserialization PROPERTIES FOLDER 3rdparty/boost)
+## will serarhc for target with a particular prefix and will set destination folder
+function(set_target_dir _PREFIX DIR TARGET_DIR)
+    get_property(TGTS DIRECTORY "${DIR}" PROPERTY BUILDSYSTEM_TARGETS)
+	string (REGEX MATCHALL "(^|;)${_PREFIX}[A-Za-z0-9_]*" _matchedVars "${TGTS}")
+	foreach (_var IN LISTS _matchedVars)
+		if (TARGET ${_var})
+			set_target_properties(${_var} PROPERTIES FOLDER ${TARGET_DIR})
+		endif()
+	endforeach()
+    get_property(SUBDIRS DIRECTORY "${DIR}" PROPERTY SUBDIRECTORIES)
+    foreach(SUBDIR IN LISTS SUBDIRS)
+        set_target_dir("${_PREFIX}" "${SUBDIR}" "${TARGET_DIR}")
+    endforeach()
+endfunction()
+
+set_target_dir(boost . 3rdparty/boost)