IVGCVSW-4487 Remove boost::filesystem

 * Replace filesystem::path
 * Replace filesystem::exists
 * Replace filesystem::is_directory
 * Replace filesystem::directory_iterator
 * Replace filesystem::filesystem_error exception
 * Replace filesystem::temp_directory_path
 * Replace filesystem::unique path
 * Replace filesystem::ofstream with std::ofstream
 * Replace filesystem::remove
 * Replace filesystem::is_regular_file
 * Replace boost::optional with armnn::Optional in touched files
 * Remove some superfluous includes
 * Update build guides, GlobalConfig.cmake and CMakeLists.txt
 * Remove redundant armnnUtils::Filesystem::Remove function.
 * Remove redundant armnnUtils::Filesystem::GetFileSize function.

Temporarily adding back Boost::filesystem to enable Boost::dll.

Signed-off-by: Francis Murtagh <francis.murtagh@arm.com>
Signed-off-by: Colm Donelan <Colm.Donelan@arm.com>

Change-Id: Ifa46d4a0097d2612ddacd8e9736c0b36e365fb11

1 files changed, 6 insertions, 7 deletions

diff --git a/src/backends/backendsCommon/DynamicBackendUtils.cpp b/src/backends/backendsCommon/DynamicBackendUtils.cpp
index 5b675ba476..1abea114bd 100644
--- a/src/backends/backendsCommon/DynamicBackendUtils.cpp
+++ b/src/backends/backendsCommon/DynamicBackendUtils.cpp
@@ -6,8 +6,7 @@
 #include <armnn/Logging.hpp>
 #include <backendsCommon/DynamicBackendUtils.hpp>
 #include "armnn/utility/StringUtils.hpp"
-
-#include <boost/filesystem.hpp>
+#include <Filesystem.hpp>
 
 #include <regex>
 
@@ -149,21 +148,21 @@ bool DynamicBackendUtils::IsPathValid(const std::string& path)
         return false;
     }
 
-    boost::filesystem::path boostPath(path);
+    fs::path fsPath(path);
 
-    if (!boost::filesystem::exists(boostPath))
+    if (!fs::exists(fsPath))
     {
         ARMNN_LOG(warning) << "WARNING: The given backend path \"" << path << "\" does not exist";
         return false;
     }
 
-    if (!boost::filesystem::is_directory(boostPath))
+    if (!fs::is_directory(fsPath))
     {
         ARMNN_LOG(warning) << "WARNING: The given backend path \"" << path << "\" is not a directory";
         return false;
     }
 
-    if (!boostPath.is_absolute())
+    if (!fsPath.is_absolute())
     {
         ARMNN_LOG(warning) << "WARNING: The given backend path \"" << path << "\" is not absolute";
         return false;
@@ -179,7 +178,7 @@ std::vector<std::string> DynamicBackendUtils::GetSharedObjects(const std::vector
 
     for (const std::string& backendPath : backendPaths)
     {
-        using namespace boost::filesystem;
+        using namespace fs;
 
         // Check if the path is valid. In case of error, IsValidPath will log an error message
         if (!IsPathValid(backendPath))