Update from gnulib

build-aux/config.guess

@@ -4,7 +4,7 @@
 
 # shellcheck disable=SC2006,SC2268 # see below for rationale
 
-timestamp='2022-01-09'
+timestamp='2022-05-08'
 
 # This file is free software; you can redistribute it and/or modify it
 # under the terms of the GNU General Public License as published by
@@ -1151,16 +1151,27 @@ EOF
 	;;
     x86_64:Linux:*:*)
 	set_cc_for_build
+	CPU=$UNAME_MACHINE
 	LIBCABI=$LIBC
 	if test "$CC_FOR_BUILD" != no_compiler_found; then
-	    if (echo '#ifdef __ILP32__'; echo IS_X32; echo '#endif') | \
-		(CCOPTS="" $CC_FOR_BUILD -E - 2>/dev/null) | \
-		grep IS_X32 >/dev/null
-	    then
-		LIBCABI=${LIBC}x32
-	    fi
+	    ABI=64
+	    sed 's/^	    //' << EOF > "$dummy.c"
+	    #ifdef __i386__
+	    ABI=x86
+	    #else
+	    #ifdef __ILP32__
+	    ABI=x32
+	    #endif
+	    #endif
+EOF
+	    cc_set_abi=`$CC_FOR_BUILD -E "$dummy.c" 2>/dev/null | grep '^ABI' | sed 's, ,,g'`
+	    eval "$cc_set_abi"
+	    case $ABI in
+		x86) CPU=i686 ;;
+		x32) LIBCABI=${LIBC}x32 ;;
+	    esac
 	fi
-	GUESS=$UNAME_MACHINE-pc-linux-$LIBCABI
+	GUESS=$CPU-pc-linux-$LIBCABI
 	;;
     xtensa*:Linux:*:*)
 	GUESS=$UNAME_MACHINE-unknown-linux-$LIBC

lib/gnulib.mk.in

@@ -208,7 +208,6 @@ CPP = @CPP@
 CPPFLAGS = @CPPFLAGS@
 CRYPTOLIB = @CRYPTOLIB@
 CXX = @CXX@
-CXXCPP = @CXXCPP@
 CXXFLAGS = @CXXFLAGS@
 CYGWIN_OBJ = @CYGWIN_OBJ@
 C_SWITCH_MACHINE = @C_SWITCH_MACHINE@

m4/manywarnings.m4

@@ -167,11 +167,13 @@ AC_DEFUN([gl_MANYWARN_ALL_GCC(C)],
   # them here so that the above 'comm' command doesn't report a false match.
   gl_AS_VAR_APPEND([$1], [' -Warray-bounds=2'])
   gl_AS_VAR_APPEND([$1], [' -Wattribute-alias=2'])
+  gl_AS_VAR_APPEND([$1], [' -Wbidi-chars=any,ucn'])
   gl_AS_VAR_APPEND([$1], [' -Wformat-overflow=2'])
   gl_AS_VAR_APPEND([$1], [' -Wformat=2'])
   gl_AS_VAR_APPEND([$1], [' -Wformat-truncation=2'])
   gl_AS_VAR_APPEND([$1], [' -Wimplicit-fallthrough=5'])
   gl_AS_VAR_APPEND([$1], [' -Wshift-overflow=2'])
+  gl_AS_VAR_APPEND([$1], [' -Wuse-after-free=3'])
   gl_AS_VAR_APPEND([$1], [' -Wunused-const-variable=2'])
   gl_AS_VAR_APPEND([$1], [' -Wvla-larger-than=4031'])