diff -ruwN source/configure source-new/configure
--- source/configure	2021-11-16 00:43:00.000000000 +0700
+++ source-new/configure	2025-09-17 21:31:19.787497963 +0700
@@ -3307,6 +3307,9 @@
 	*-*-vxworks*)
 	    ac_sys_system=VxWorks
 	    ;;
+	*-*-redox*)
+		ac_sys_system=Redox
+		;;
 	*)
 		# for now, limit cross builds to known configurations
 		MACHDEP="unknown"
@@ -3331,6 +3334,7 @@
     case $MACHDEP in
 	aix*) MACHDEP="aix";;
 	linux*) MACHDEP="linux";;
+	redox*) MACHDEP="redox";;
 	cygwin*) MACHDEP="cygwin";;
 	darwin*) MACHDEP="darwin";;
 	'')	MACHDEP="unknown";;
@@ -3342,7 +3346,7 @@
 
 if test "$cross_compiling" = yes; then
 	case "$host" in
-	*-*-linux*)
+	*-*-linux*|*-*-redox*)
 		case "$host_cpu" in
 		arm*)
 			_host_cpu=arm
@@ -5951,7 +5955,7 @@
 	      PY3LIBRARY=libpython3.so
 	  fi
           ;;
-    Linux*|GNU*|NetBSD*|FreeBSD*|DragonFly*|OpenBSD*)
+    Linux*|GNU*|NetBSD*|FreeBSD*|DragonFly*|OpenBSD*|Redox*)
 	  LDLIBRARY='libpython$(LDVERSION).so'
 	  BLDLIBRARY='-L. -lpython$(LDVERSION)'
 	  RUNSHARED=LD_LIBRARY_PATH=`pwd`${LD_LIBRARY_PATH:+:${LD_LIBRARY_PATH}}
@@ -9551,7 +9555,7 @@
 			BLDSHARED="$LDSHARED"
 		fi
 		;;
-	Linux*|GNU*|QNX*|VxWorks*)
+	Linux*|GNU*|QNX*|VxWorks*|Redox*)
 		LDSHARED='$(CC) -shared'
 		LDCXXSHARED='$(CXX) -shared';;
 	FreeBSD*)
@@ -9620,7 +9624,7 @@
 		 else CCSHARED="+z";
 		 fi;;
 	Linux-android*) ;;
-	Linux*|GNU*) CCSHARED="-fPIC";;
+	Linux*|GNU*|Redox*) CCSHARED="-fPIC";;
 	FreeBSD*|NetBSD*|OpenBSD*|DragonFly*) CCSHARED="-fPIC";;
 	OpenUNIX*|UnixWare*)
 		if test "$GCC" = "yes"
@@ -9650,7 +9654,7 @@
 	    LINKFORSHARED="-Wl,-E -Wl,+s";;
 #	    LINKFORSHARED="-Wl,-E -Wl,+s -Wl,+b\$(BINLIBDEST)/lib-dynload";;
 	Linux-android*) LINKFORSHARED="-pie -Xlinker -export-dynamic";;
-	Linux*|GNU*) LINKFORSHARED="-Xlinker -export-dynamic";;
+	Linux*|GNU*|Redox*) LINKFORSHARED="-Xlinker -export-dynamic";;
 	# -u libsys_s pulls in all symbols in libsys
 	Darwin/*)
 		LINKFORSHARED="$extra_undefs -framework CoreFoundation"
diff -ruwN source/Include/pyport.h source-new/Include/pyport.h
--- source/Include/pyport.h	2021-11-16 00:43:00.000000000 +0700
+++ source-new/Include/pyport.h	2025-09-17 21:31:56.613084352 +0700
@@ -838,7 +838,7 @@
 #  error "Py_TRACE_REFS ABI is not compatible with release and debug ABI"
 #endif
 
-#if defined(__ANDROID__) || defined(__VXWORKS__)
+#if defined(__ANDROID__) || defined(__VXWORKS__) || defined(__redox__)
    /* Ignore the locale encoding: force UTF-8 */
 #  define _Py_FORCE_UTF8_LOCALE
 #endif
diff -ruwN source/Modules/timemodule.c source-new/Modules/timemodule.c
--- source/Modules/timemodule.c	2021-11-16 00:43:00.000000000 +0700
+++ source-new/Modules/timemodule.c	2025-09-17 21:30:18.552349106 +0700
@@ -1416,7 +1416,7 @@
     return 0;
 }
 
-#elif defined(HAVE_CLOCK_GETTIME) && defined(CLOCK_PROCESS_CPUTIME_ID)
+#elif defined(HAVE_CLOCK_GETTIME) && defined(CLOCK_PROCESS_CPUTIME_ID) && defined(CLOCK_THREAD_CPUTIME_ID)
 #define HAVE_THREAD_TIME
 
 #if defined(__APPLE__) && defined(__has_attribute) && __has_attribute(availability)