https://bugs.gentoo.org/932251#c7
--- a/src/mongo/db/initialize_server_global_state.cpp     2024-02-13 00:46:45.000000000 -0800
+++ b/src/mongo/db/initialize_server_global_state.cpp     2024-06-05 01:07:27.035053336 -0700
@@ -34,7 +34,7 @@
 #include "mongo/db/initialize_server_global_state.h"
 #include "mongo/db/initialize_server_global_state_gen.h"
 
-#include <boost/filesystem/operations.hpp>
+#include <boost/filesystem.hpp>
 #include <fmt/format.h>
 #include <iostream>
 #include <memory>
@@ -346,7 +346,7 @@
                                             << "\" should name a file, not a directory.");
             }
 
-            if (!serverGlobalParams.logAppend && boost::filesystem::is_regular(absoluteLogpath)) {
+            if (!serverGlobalParams.logAppend && boost::filesystem::is_regular_file(absoluteLogpath)) {
                 std::string renameTarget = absoluteLogpath + "." + terseCurrentTime(false);
                 boost::system::error_code ec;
                 boost::filesystem::rename(absoluteLogpath, renameTarget, ec);


--- a/src/mongo/db/startup_warnings_mongod.cpp     2024-02-13 00:46:45.000000000 -0800
+++ b/src/mongo/db/startup_warnings_mongod.cpp     2024-06-05 01:09:36.740158960 -0700
@@ -34,6 +34,7 @@
 #include "mongo/db/startup_warnings_mongod.h"
 
 #include <boost/filesystem/operations.hpp>
+#include <boost/filesystem/exception.hpp>
 #include <fstream>
 #ifndef _WIN32
 #include <sys/resource.h>


--- a/src/mongo/db/storage/storage_engine_lock_file_posix.cpp     2024-06-05 00:46:38.374648451 -0700
+++ b/src/mongo/db/storage/storage_engine_lock_file_posix.cpp     2024-06-05 00:47:33.178731500 -0700
@@ -55,7 +55,7 @@
     // if called without a fully qualified path it asserts; that makes mongoperf fail.
     // so make a warning. need a better solution longer term.
     // massert(40389, str::stream() << "Couldn't find parent dir for file: " << file.string(),);
-    if (!file.has_branch_path()) {
+    if (!file.has_parent_path()) {
         LOGV2(22274,
               "warning flushMyDirectory couldn't find parent dir for file: {file}",
               "flushMyDirectory couldn't find parent dir for file",
@@ -64,7 +64,7 @@
     }
 
 
-    boost::filesystem::path dir = file.branch_path();  // parent_path in new boosts
+    boost::filesystem::path dir = file.parent_path();  // parent_path in new boosts
 
     LOGV2_DEBUG(22275, 1, "flushing directory {dir_string}", "dir_string"_attr = dir.string());


--- a/src/mongo/db/storage/storage_engine_metadata.cpp     2024-02-13 00:46:45.000000000 -0800
+++ b/src/mongo/db/storage/storage_engine_metadata.cpp     2024-06-05 01:26:46.904273382 -0700
@@ -220,7 +220,7 @@
     // if called without a fully qualified path it asserts; that makes mongoperf fail.
     // so make a warning. need a better solution longer term.
     // massert(13652, str::stream() << "Couldn't find parent dir for file: " << file.string(),);
-    if (!file.has_branch_path()) {
+    if (!file.has_parent_path()) {
         LOGV2(22283,
               "warning flushMyDirectory couldn't find parent dir for file: {file}",
               "flushMyDirectory couldn't find parent dir for file",
@@ -229,7 +229,7 @@
     }
 
 
-    boost::filesystem::path dir = file.branch_path();  // parent_path in new boosts
+    boost::filesystem::path dir = file.parent_path();  // parent_path in new boosts
 
     LOGV2_DEBUG(22284, 1, "flushing directory {dir_string}", "dir_string"_attr = dir.string());


--- a/src/mongo/shell/shell_utils_launcher.cpp     2024-02-13 00:46:45.000000000 -0800
+++ b/src/mongo/shell/shell_utils_launcher.cpp     2024-06-05 01:29:45.140048809 -0700
@@ -39,6 +39,7 @@
 #include <boost/iostreams/stream.hpp>
 #include <boost/iostreams/stream_buffer.hpp>
 #include <boost/iostreams/tee.hpp>
+#include <boost/filesystem.hpp>
 #include <cctype>
 #include <fcntl.h>
 #include <fmt/format.h>
@@ -907,26 +908,26 @@
     boost::filesystem::directory_iterator i(from);
     while (i != end) {
         boost::filesystem::path p = *i;
-        if (p.leaf() == "metrics.interim" || p.leaf() == "metrics.interim.temp") {
+        if (p.filename() == "metrics.interim" || p.filename() == "metrics.interim.temp") {
             // Ignore any errors for metrics.interim* files as these may disappear during copy
             boost::system::error_code ec;
-            boost::filesystem::copy_file(p, to / p.leaf(), ec);
+            boost::filesystem::copy_file(p, to / p.filename(), ec);
             if (ec) {
                 LOGV2_INFO(22814,
                            "Skipping copying of file from '{from}' to "
                            "'{to}' due to: {error}",
                            "Skipping copying of file due to error"
                            "from"_attr = p.generic_string(),
-                           "to"_attr = (to / p.leaf()).generic_string(),
+                           "to"_attr = (to / p.filename()).generic_string(),
                            "error"_attr = ec.message());
             }
-        } else if (p.leaf() != "mongod.lock" && p.leaf() != "WiredTiger.lock") {
+        } else if (p.filename() != "mongod.lock" && p.filename() != "WiredTiger.lock") {
             if (boost::filesystem::is_directory(p)) {
-                boost::filesystem::path newDir = to / p.leaf();
+                boost::filesystem::path newDir = to / p.filename();
                 boost::filesystem::create_directory(newDir);
                 copyDir(p, newDir);
             } else {
-                boost::filesystem::copy_file(p, to / p.leaf());
+                boost::filesystem::copy_file(p, to / p.filename());
             }
         }
         ++i;


--- a/src/mongo/scripting/engine.cpp     2024-02-13 00:46:45.000000000 -0800
+++ b/src/mongo/scripting/engine.cpp     2024-06-05 00:59:57.488909335 -0700
@@ -34,6 +34,7 @@
 #include "mongo/scripting/engine.h"
 
 #include <boost/filesystem/operations.hpp>
+#include <boost/filesystem/directory.hpp>
 #include <cctype>
 
 #include "mongo/client/dbclient_base.h"


--- a/src/mongo/shell/shell_utils_launcher.h     2024-02-13 00:46:45.000000000 -0800
+++ b/src/mongo/shell/shell_utils_launcher.h     2024-06-05 01:04:44.286162623 -0700
@@ -29,7 +29,7 @@
 
 #pragma once
 
-#include <boost/filesystem/convenience.hpp>
+#include <boost/filesystem/path.hpp>
 #include <map>
 #include <sstream>
 #include <string>