Dep: Add efsw (entropia file system watcher)

* Uses system API's which reduces the overhead
  instead of checking periodically for changes.
* Will be used in the hotswap system to reload
  shared libraries on changes.

1 files changed, 85 insertions, 0 deletions

diff --git a/dep/efsw/CMakeLists.txt b/dep/efsw/CMakeLists.txt
new file mode 100644
index 00000000000..81a1d20b204
--- /dev/null
+++ b/dep/efsw/CMakeLists.txt
@@ -0,0 +1,85 @@
+if (WITH_DYNAMIC_LINKING)
+  set(SRCS
+    src/efsw/DirectorySnapshot.cpp
+    src/efsw/DirectorySnapshotDiff.cpp
+    src/efsw/DirWatcherGeneric.cpp
+    src/efsw/FileInfo.cpp
+    src/efsw/FileSystem.cpp
+    src/efsw/FileWatcher.cpp
+    src/efsw/FileWatcherCWrapper.cpp
+    src/efsw/FileWatcherGeneric.cpp
+    src/efsw/FileWatcherImpl.cpp
+    src/efsw/Log.cpp
+    src/efsw/Mutex.cpp
+    src/efsw/String.cpp
+    src/efsw/System.cpp
+    src/efsw/Thread.cpp
+    src/efsw/Watcher.cpp
+    src/efsw/WatcherGeneric.cpp)
+
+  if(WIN32)
+    list(APPEND SRCS
+      src/efsw/platform/win/FileSystemImpl.cpp
+      src/efsw/platform/win/MutexImpl.cpp
+      src/efsw/platform/win/SystemImpl.cpp
+      src/efsw/platform/win/ThreadImpl.cpp)
+  else()
+    list(APPEND SRCS
+      src/efsw/platform/posix/FileSystemImpl.cpp
+      src/efsw/platform/posix/MutexImpl.cpp
+      src/efsw/platform/posix/SystemImpl.cpp
+      src/efsw/platform/posix/ThreadImpl.cpp)
+  endif()
+
+  if (WIN32)
+    list(APPEND SRCS
+      src/efsw/WatcherWin32.cpp
+      src/efsw/FileWatcherWin32.cpp)
+  elseif (${CMAKE_SYSTEM_NAME} MATCHES "Linux")
+    list(APPEND SRCS
+      src/efsw/FileWatcherInotify.cpp
+      src/efsw/WatcherInotify.cpp)
+
+    if (NOT EXISTS "/usr/include/sys/inotify.h" AND NOT EXISTS "/usr/local/include/sys/inotify.h")
+      add_definitions(-DEFSW_INOTIFY_NOSYS)
+    endif()
+  elseif (${CMAKE_SYSTEM_NAME} MATCHES "FreeBSD" OR APPLE)
+    list(APPEND SRCS
+      src/efsw/FileWatcherKqueue.cpp
+      src/efsw/WatcherKqueue.cpp)
+
+    if (APPLE)
+      list(APPEND SRCS
+        src/efsw/FileWatcherFSEvents.cpp
+        src/efsw/WatcherFSEvents.cpp)
+
+      exec_program(uname ARGS -v  OUTPUT_VARIABLE OSX_VERSION)
+      string(REGEX MATCH "[0-9]+" OSX_VERSION ${OSX_VERSION})
+      if (NOT OSX_VERSION GREATER 9)
+        add_definitions(-DEFSW_FSEVENTS_NOT_SUPPORTED)
+      endif()
+
+      set(OPTIONAL_MAC_LINK_LIBRARIES "-framework CoreFoundation" "-framework CoreServices")
+    endif()
+  endif()
+
+  add_library(efsw STATIC ${SRCS})
+
+  target_include_directories(efsw
+    PUBLIC
+      ${CMAKE_CURRENT_SOURCE_DIR}/include
+    PRIVATE
+      ${CMAKE_CURRENT_SOURCE_DIR}/src)
+
+  target_link_libraries(efsw
+    PUBLIC
+      threads
+      ${OPTIONAL_MAC_LINK_LIBRARIES})
+
+  set_target_properties(efsw
+    PROPERTIES
+      FOLDER
+        "dep")
+else()
+  add_library(efsw INTERFACE)
+endif()