https://bugs.gentoo.org/976808
https://github.com/gerbera/gerbera/pull/3841
https://github.com/gerbera/gerbera/pull/3889
--- a/src/config/setup/config_setup_path.cc
+++ b/src/config/setup/config_setup_path.cc
@@ -30,6 +30,7 @@
 #include "config/config_options.h"
 #include "util/logger.h"
 
+#include <cstring>
 #include <pugixml.hpp>
 
 bool ConfigPathSetup::checkPathValue(std::string& optValue, std::string& pathValue) const
--- a/src/content/inotify/mt_inotify.cc
+++ b/src/content/inotify/mt_inotify.cc
@@ -47,6 +47,7 @@
 
 #include <algorithm>
 #include <array>
+#include <cstring>
 #include <sys/inotify.h>
 #include <sys/ioctl.h>
 #include <sys/select.h>
--- a/src/database/search_handler.h
+++ b/src/database/search_handler.h
@@ -32,7 +32,7 @@
 #include "util/tools.h"
 
 #include <algorithm>
-#include <fmt/core.h>
+#include <fmt/format.h>
 #include <map>
 #include <memory>
 #include <tuple>
--- a/src/exceptions.h
+++ b/src/exceptions.h
@@ -34,7 +34,7 @@
 #ifndef __EXCEPTIONS_H__
 #define __EXCEPTIONS_H__
 
-#include <fmt/core.h>
+#include <fmt/format.h>
 #include <stdexcept>
 #include <string>
 
--- a/src/iohandler/mem_io_handler.cc
+++ b/src/iohandler/mem_io_handler.cc
@@ -35,6 +35,7 @@
 #include "mem_io_handler.h" // API
 
 #include "exceptions.h"
+#include <cstring>
 
 MemIOHandler::MemIOHandler(const void* buffer, int length)
     : buffer(new char[length])
--- a/src/request_handler/request_handler.h
+++ b/src/request_handler/request_handler.h
@@ -36,6 +36,7 @@
 
 #include <map>
 #include <memory>
+#include <string>
 #include <upnp.h>
 
 // forward declaration
--- a/src/upnp/client_manager.h
+++ b/src/upnp/client_manager.h
@@ -31,6 +31,7 @@
 #include <chrono>
 #include <memory>
 #include <mutex>
+#include <string>
 #include <vector>
 
 // forward declarations
--- a/src/upnp/quirks.h
+++ b/src/upnp/quirks.h
@@ -29,6 +29,7 @@
 #include <cstdint>
 #include <map>
 #include <memory>
+#include <string>
 #include <vector>
 
 namespace pugi {
--- a/src/util/grb_fs.cc
+++ b/src/util/grb_fs.cc
@@ -27,6 +27,7 @@ Gerbera - https://gerbera.io/
 #include "util/tools.h"
 
 #include <algorithm>
+#include <cstring>
 #include <fcntl.h>
 #include <fstream>
 #include <sstream>
--- a/src/util/grb_net.cc
+++ b/src/util/grb_net.cc
@@ -27,6 +27,7 @@ Gerbera - https://gerbera.io/
 #include "tools.h"
 
 #include <arpa/inet.h>
+#include <cstring>
 #include <ifaddrs.h>
 #include <netdb.h>
 #include <regex>
--- a/src/util/string_converter.cc
+++ b/src/util/string_converter.cc
@@ -41,6 +41,7 @@
 #include "util/logger.h"
 
 #include <array>
+#include <cstring>
 #include <vector>
 #if FMT_VERSION >= 100202
 #include <fmt/ranges.h>
--- a/src/util/thread_executor.cc
+++ b/src/util/thread_executor.cc
@@ -34,6 +34,7 @@
 #include "thread_executor.h" // API
 
 #include "util/logger.h"
+#include <cstring>
 
 ThreadExecutor::~ThreadExecutor()
 {
--- a/src/util/thread_runner.h
+++ b/src/util/thread_runner.h
@@ -32,6 +32,7 @@
 
 #include <chrono>
 #include <condition_variable>
+#include <cstring>
 #include <functional>
 #include <mutex>
 #include <pthread.h>
--- a/src/util/tools.cc
+++ b/src/util/tools.cc
@@ -39,6 +39,7 @@
 
 #include <algorithm>
 #include <cinttypes>
+#include <cstring>
 #include <numeric>
 #include <queue>
 #include <regex>
--- a/src/util/url.h
+++ b/src/util/url.h
@@ -39,6 +39,7 @@
 
 #include <curl/curl.h>
 #include <memory>
+#include <sstream>
 #include <string>
 
 /// @brief Handle urls for CURL
--- a/src/util/url_utils.cc
+++ b/src/util/url_utils.cc
@@ -29,6 +29,7 @@ Gerbera - https://gerbera.io/
 #if FMT_VERSION >= 100202
 #include <fmt/ranges.h>
 #endif
+#include <cstring>
 #include <sstream>
 
 // URL FORMATTING CONSTANTS
--- a/src/util/url_utils.h
+++ b/src/util/url_utils.h
@@ -25,6 +25,7 @@
 #define GERBERA_URL_UTILS_H
 
 #include <map>
+#include <string>
 #include <string_view>
 #include <utility>
 #include <vector>
-- 
2.53.0