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

4 files changed, 9 insertions, 8 deletions

diff --git a/src/armnnTfLiteParser/CMakeLists.txt b/src/armnnTfLiteParser/CMakeLists.txt
index 97c55a1d08..d14cb75c49 100755
--- a/src/armnnTfLiteParser/CMakeLists.txt
+++ b/src/armnnTfLiteParser/CMakeLists.txt
@@ -18,7 +18,7 @@ if(BUILD_TF_LITE_PARSER)
     target_include_directories(armnnTfLiteParser PRIVATE ../armnnUtils)
     target_include_directories(armnnTfLiteParser SYSTEM PRIVATE "${TF_LITE_SCHEMA_INCLUDE_PATH}")
 
-    target_link_libraries(armnnTfLiteParser ${Boost_FILESYSTEM_LIBRARY} ${Boost_THREAD_LIBRARY})
+    target_link_libraries(armnnTfLiteParser ${Boost_THREAD_LIBRARY})
 
     # If user has explicitly specified flatbuffers lib then use that,
     # otherwise search for it based on FLATBUFFERS_BUILD_DIR
diff --git a/src/armnnTfLiteParser/TfLiteParser.cpp b/src/armnnTfLiteParser/TfLiteParser.cpp
index 7f68199368..bad2504f18 100644
--- a/src/armnnTfLiteParser/TfLiteParser.cpp
+++ b/src/armnnTfLiteParser/TfLiteParser.cpp
@@ -15,6 +15,7 @@
 
 // armnnUtils:
 #include <armnnUtils/Permute.hpp>
+#include <Filesystem.hpp>
 
 #include <ParserHelper.hpp>
 #include <VerificationHelpers.hpp>
@@ -26,7 +27,6 @@
 
 #include <boost/format.hpp>
 #include <boost/numeric/conversion/cast.hpp>
-#include <boost/filesystem.hpp>
 
 #include <fstream>
 #include <algorithm>
@@ -2868,9 +2868,9 @@ TfLiteParser::ModelPtr TfLiteParser::LoadModelFromFile(const char * fileName)
         throw InvalidArgumentException(boost::str(boost::format("Invalid (null) file name %1%") %
                                        CHECK_LOCATION().AsString()));
     }
-    boost::system::error_code errorCode;
-    boost::filesystem::path pathToFile(fileName);
-    if (!boost::filesystem::exists(pathToFile, errorCode))
+    std::error_code errorCode;
+    fs::path pathToFile(fileName);
+    if (!fs::exists(pathToFile, errorCode))
     {
         std::string locationString = CHECK_LOCATION().AsString();
         std::string msg = boost::str(boost::format("Cannot find the file (%1%) errorCode: %2% %3%") %
diff --git a/src/armnnTfLiteParser/test/LoadModel.cpp b/src/armnnTfLiteParser/test/LoadModel.cpp
index 9ae3412a11..9777333495 100644
--- a/src/armnnTfLiteParser/test/LoadModel.cpp
+++ b/src/armnnTfLiteParser/test/LoadModel.cpp
@@ -6,6 +6,8 @@
 #include "ParserFlatbuffersFixture.hpp"
 #include "../TfLiteParser.hpp"
 
+#include <Filesystem.hpp>
+
 using armnnTfLiteParser::TfLiteParser;
 using ModelPtr = TfLiteParser::ModelPtr;
 using SubgraphPtr = TfLiteParser::SubgraphPtr;
@@ -196,8 +198,8 @@ BOOST_FIXTURE_TEST_CASE(LoadModelFromBinary, LoadModelFixture)
 
 BOOST_FIXTURE_TEST_CASE(LoadModelFromFile, LoadModelFixture)
 {
-    using namespace boost::filesystem;
-    std::string fname = unique_path(temp_directory_path() / "%%%%-%%%%-%%%%.tflite").string();
+    using namespace fs;
+    fs::path fname = armnnUtils::Filesystem::NamedTempFile("Armnn-tfLite-LoadModelFromFile-TempFile.csv");
     bool saved = flatbuffers::SaveFile(fname.c_str(),
                                        reinterpret_cast<char *>(m_GraphBinary.data()),
                                        m_GraphBinary.size(), true);
diff --git a/src/armnnTfLiteParser/test/ParserFlatbuffersFixture.hpp b/src/armnnTfLiteParser/test/ParserFlatbuffersFixture.hpp
index 56811b5b6d..891e0be499 100644
--- a/src/armnnTfLiteParser/test/ParserFlatbuffersFixture.hpp
+++ b/src/armnnTfLiteParser/test/ParserFlatbuffersFixture.hpp
@@ -19,7 +19,6 @@
 
 #include <test/TensorHelpers.hpp>
 
-#include <boost/filesystem.hpp>
 #include <boost/format.hpp>
 
 #include "flatbuffers/idl.h"