sysdeps/x86/configure

   1 # This file is generated from configure.ac by Autoconf.  DO NOT EDIT!
   2  # Local configure fragment for sysdeps/x86.
   3
   4 if test $enable_cet != no; then
   5   # Check if CET can be enabled.
   6   { $as_echo "$as_me:${as_lineno-$LINENO}: checking whether CET can be enabled" >&5
   7 $as_echo_n "checking whether CET can be enabled... " >&6; }
   8 if ${libc_cv_x86_cet_available+:} false; then :
   9   $as_echo_n "(cached) " >&6
  10 else
  11   cat > conftest.c <<EOF
  12 #if !defined __CET__ || __CET__ != 3
  13 # error CET isn't available.
  14 #endif
  15 EOF
  16                  if { ac_try='${CC-cc} -c $CFLAGS -fcf-protection -include cet.h conftest.c 1>&5'
  17   { { eval echo "\"\$as_me\":${as_lineno-$LINENO}: \"$ac_try\""; } >&5
  18   (eval $ac_try) 2>&5
  19   ac_status=$?
  20   $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
  21   test $ac_status = 0; }; }; then
  22                    libc_cv_x86_cet_available=yes
  23                  else
  24                    libc_cv_x86_cet_available=no
  25                  fi
  26                  rm -rf conftest*
  27 fi
  28 { $as_echo "$as_me:${as_lineno-$LINENO}: result: $libc_cv_x86_cet_available" >&5
  29 $as_echo "$libc_cv_x86_cet_available" >&6; }
  30   if test $libc_cv_x86_cet_available != yes; then
  31     as_fn_error $? "$CC doesn't support CET" "$LINENO" 5
  32   fi
  33 fi
  34 if test $enable_cet != no; then
  35   # Check if assembler supports CET.
  36   { $as_echo "$as_me:${as_lineno-$LINENO}: checking whether $AS supports CET" >&5
  37 $as_echo_n "checking whether $AS supports CET... " >&6; }
  38 if ${libc_cv_x86_cet_as+:} false; then :
  39   $as_echo_n "(cached) " >&6
  40 else
  41   cat > conftest.s <<EOF
  42         incsspd %ecx
  43 EOF
  44                  if { ac_try='${CC-cc} -c $CFLAGS conftest.s -o conftest.o 1>&5'
  45   { { eval echo "\"\$as_me\":${as_lineno-$LINENO}: \"$ac_try\""; } >&5
  46   (eval $ac_try) 2>&5
  47   ac_status=$?
  48   $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
  49   test $ac_status = 0; }; }; then
  50                    libc_cv_x86_cet_as=yes
  51                  else
  52                    libc_cv_x86_cet_as=no
  53                  fi
  54                  rm -rf conftest*
  55 fi
  56 { $as_echo "$as_me:${as_lineno-$LINENO}: result: $libc_cv_x86_cet_as" >&5
  57 $as_echo "$libc_cv_x86_cet_as" >&6; }
  58   if test $libc_cv_x86_cet_as = no; then
  59     as_fn_error $? "$AS doesn't support CET" "$LINENO" 5
  60   fi
  61 fi
  62 if test $enable_cet = yes; then
  63   $as_echo "#define DEFAULT_DL_X86_CET_CONTROL cet_elf_property" >>confdefs.h
  64
  65 elif test $enable_cet = permissive; then
  66   $as_echo "#define DEFAULT_DL_X86_CET_CONTROL cet_permissive" >>confdefs.h
  67
  68 fi
  69 config_vars="$config_vars
  70 enable-cet = $enable_cet"
  71
  72 # Check if linker supports x86 ISA level.
  73 { $as_echo "$as_me:${as_lineno-$LINENO}: checking for linker x86 ISA level support" >&5
  74 $as_echo_n "checking for linker x86 ISA level support... " >&6; }
  75 if ${libc_cv_include_x86_isa_level+:} false; then :
  76   $as_echo_n "(cached) " >&6
  77 else
  78   cat > conftest1.S <<EOF
  79 #ifdef __LP64__
  80 # define P2ALIGN 3
  81 #else
  82 # define P2ALIGN 2
  83 #endif
  84         .section ".note.gnu.property", "a"
  85         .p2align P2ALIGN
  86         .long 1f - 0f           /* name length.  */
  87         .long 4f - 1f           /* data length.  */
  88         /* NT_GNU_PROPERTY_TYPE_0 */
  89         .long 5                 /* note type.  */
  90 0:
  91         .asciz "GNU"            /* vendor name.  */
  92 1:
  93         .p2align P2ALIGN
  94         /* GNU_PROPERTY_X86_ISA_1_NEEDED */
  95         .long 0xc0008002        /* pr_type.  */
  96         .long 3f - 2f           /* pr_datasz.  */
  97 2:
  98         .long 0x1
  99 3:
 100         .p2align P2ALIGN
 101 4:
 102 EOF
 103 cat > conftest2.S <<EOF
 104 #ifdef __LP64__
 105 # define P2ALIGN 3
 106 #else
 107 # define P2ALIGN 2
 108 #endif
 109         .section ".note.gnu.property", "a"
 110         .p2align P2ALIGN
 111         .long 1f - 0f           /* name length.  */
 112         .long 4f - 1f           /* data length.  */
 113         /* NT_GNU_PROPERTY_TYPE_0 */
 114         .long 5                 /* note type.  */
 115 0:
 116         .asciz "GNU"            /* vendor name.  */
 117 1:
 118         .p2align P2ALIGN
 119         /* GNU_PROPERTY_X86_ISA_1_NEEDED */
 120         .long 0xc0008002        /* pr_type.  */
 121         .long 3f - 2f           /* pr_datasz.  */
 122 2:
 123         .long 0x2
 124 3:
 125         .p2align P2ALIGN
 126 4:
 127 EOF
 128 libc_cv_include_x86_isa_level=no
 129 if { ac_try='${CC-cc} $CFLAGS $CPPFLAGS -nostartfiles -nostdlib -r -o conftest conftest1.S conftest2.S'
 130   { { eval echo "\"\$as_me\":${as_lineno-$LINENO}: \"$ac_try\""; } >&5
 131   (eval $ac_try) 2>&5
 132   ac_status=$?
 133   $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
 134   test $ac_status = 0; }; }; then
 135   count=`LC_ALL=C $READELF -n conftest | grep NT_GNU_PROPERTY_TYPE_0 | wc -l`
 136   if test "$count" = 1; then
 137     libc_cv_include_x86_isa_level=yes
 138   fi
 139 fi
 140 rm -f conftest*
 141 fi
 142 { $as_echo "$as_me:${as_lineno-$LINENO}: result: $libc_cv_include_x86_isa_level" >&5
 143 $as_echo "$libc_cv_include_x86_isa_level" >&6; }
 144 if test $libc_cv_include_x86_isa_level = yes; then
 145   $as_echo "#define INCLUDE_X86_ISA_LEVEL 1" >>confdefs.h
 146
 147   { $as_echo "$as_me:${as_lineno-$LINENO}: checking for LAHF/SAHF instruction support" >&5
 148 $as_echo_n "checking for LAHF/SAHF instruction support... " >&6; }
 149 if ${libc_cv_have_x86_lahf_sahf+:} false; then :
 150   $as_echo_n "(cached) " >&6
 151 else
 152       libc_cv_have_x86_lahf_sahf=no
 153     if { ac_try='${CC-cc} $CFLAGS $CPPFLAGS -fverbose-asm -S -o - -x c /dev/null'
 154   { { eval echo "\"\$as_me\":${as_lineno-$LINENO}: \"$ac_try\""; } >&5
 155   (eval $ac_try) 2>&5
 156   ac_status=$?
 157   $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
 158   test $ac_status = 0; }; } | grep -qE '(-msahf\b|-march=x86-64-v)'; then
 159       libc_cv_have_x86_lahf_sahf=yes
 160     fi
 161 fi
 162 { $as_echo "$as_me:${as_lineno-$LINENO}: result: $libc_cv_have_x86_lahf_sahf" >&5
 163 $as_echo "$libc_cv_have_x86_lahf_sahf" >&6; }
 164   if test $libc_cv_have_x86_lahf_sahf = yes; then
 165     $as_echo "#define HAVE_X86_LAHF_SAHF 1" >>confdefs.h
 166
 167   fi
 168   { $as_echo "$as_me:${as_lineno-$LINENO}: checking for MOVBE instruction support" >&5
 169 $as_echo_n "checking for MOVBE instruction support... " >&6; }
 170 if ${libc_cv_have_x86_movbe+:} false; then :
 171   $as_echo_n "(cached) " >&6
 172 else
 173       libc_cv_have_x86_movbe=no
 174     if { ac_try='${CC-cc} $CFLAGS $CPPFLAGS -fverbose-asm -S -o - -x c /dev/null'
 175   { { eval echo "\"\$as_me\":${as_lineno-$LINENO}: \"$ac_try\""; } >&5
 176   (eval $ac_try) 2>&5
 177   ac_status=$?
 178   $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
 179   test $ac_status = 0; }; } | grep -qE '(-mmovbe\b|-march=x86-64-v([3-9]|[1-9][0-9]))'; then
 180       libc_cv_have_x86_movbe=yes
 181     fi
 182 fi
 183 { $as_echo "$as_me:${as_lineno-$LINENO}: result: $libc_cv_have_x86_movbe" >&5
 184 $as_echo "$libc_cv_have_x86_movbe" >&6; }
 185   if test $libc_cv_have_x86_movbe = yes; then
 186     $as_echo "#define HAVE_X86_MOVBE 1" >>confdefs.h
 187
 188   fi
 189 fi
 190 config_vars="$config_vars
 191 enable-x86-isa-level = $libc_cv_include_x86_isa_level"
 192
 193 $as_echo "#define SUPPORT_STATIC_PIE 1" >>confdefs.h
 194