change to boost::filesystem to support older compilers

Builds/CMake/RippledCore.cmake

@@ -13,6 +13,18 @@ if (unity)
   set_target_properties(xrpl_core PROPERTIES UNITY_BUILD ON)
 endif ()
 
+# Find the ACL library
+find_library(ACL_LIBRARY
+  NAMES acl
+)
+
+# Check that the ACL library was found
+if(ACL_LIBRARY)
+  message("ACL library found at ${ACL_LIBRARY}")
+else()
+  message(FATAL_ERROR "ACL library not found")
+endif()
+
 
 #[===============================[
     beast/legacy FILES:
@@ -1014,6 +1026,7 @@ target_link_libraries (rippled
   Ripple::opts
   Ripple::libs
   Ripple::xrpl_core
+  ${ACL_LIBRARY}
   )
 exclude_if_included (rippled)
 # define a macro for tests that might need to

src/test/app/Import_test.cpp

@@ -27,6 +27,7 @@
 #include <ripple/protocol/Import.h>
 #include <ripple/protocol/jss.h>
 #include <test/jtx.h>
+#include <boost/filesystem.hpp>
 
 #define BEAST_REQUIRE(x)     \
     {                        \
@@ -121,8 +122,8 @@ class Import_test : public beast::unit_test::suite
         try
         {
             // check if file exists and is not empty
-            if (!std::filesystem::exists(fn) ||
-                std::filesystem::file_size(fn) == 0)
+            if (!boost::filesystem::exists(fn) ||
+                boost::filesystem::file_size(fn) == 0)
             {
                 std::cout << "file was zero size or didn't exist"
                           << "\n";
@@ -146,7 +147,7 @@ class Import_test : public beast::unit_test::suite
                 return {};
             }
         }
-        catch (std::filesystem::filesystem_error& e)
+        catch (boost::filesystem::filesystem_error& e)
         {
             std::cout << "Failed to load file " + fn + " (" + e.what() + ")";
             return {};