sysdeps/arm/configure

   1 # This file is generated from configure.ac by Autoconf.  DO NOT EDIT!
   2  # Local configure fragment for sysdeps/arm.
   3
   4 $as_echo "#define PI_STATIC_AND_HIDDEN 1" >>confdefs.h
   5
   6
   7 # We check to see if the compiler and flags are
   8 # selecting the hard-float ABI and if they are then
   9 # we set libc_cv_arm_pcs_vfp to yes which causes
  10 # HAVE_ARM_PCS_VFP to be defined in config.h and
  11 # in include/libc-symbols.h and thus available to
  12 # shlib-versions to select the appropriate name for
  13 # the dynamic linker via %ifdef.
  14
  15
  16 { $as_echo "$as_me:${as_lineno-$LINENO}: checking for grep that handles long lines and -e" >&5
  17 $as_echo_n "checking for grep that handles long lines and -e... " >&6; }
  18 if ${ac_cv_path_GREP+:} false; then :
  19   $as_echo_n "(cached) " >&6
  20 else
  21   if test -z "$GREP"; then
  22   ac_path_GREP_found=false
  23   # Loop through the user's path and test for each of PROGNAME-LIST
  24   as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
  25 for as_dir in $PATH$PATH_SEPARATOR/usr/xpg4/bin
  26 do
  27   IFS=$as_save_IFS
  28   test -z "$as_dir" && as_dir=.
  29     for ac_prog in grep ggrep; do
  30     for ac_exec_ext in '' $ac_executable_extensions; do
  31       ac_path_GREP="$as_dir/$ac_prog$ac_exec_ext"
  32       as_fn_executable_p "$ac_path_GREP" || continue
  33 # Check for GNU ac_path_GREP and select it if it is found.
  34   # Check for GNU $ac_path_GREP
  35 case `"$ac_path_GREP" --version 2>&1` in
  36 *GNU*)
  37   ac_cv_path_GREP="$ac_path_GREP" ac_path_GREP_found=:;;
  38 *)
  39   ac_count=0
  40   $as_echo_n 0123456789 >"conftest.in"
  41   while :
  42   do
  43     cat "conftest.in" "conftest.in" >"conftest.tmp"
  44     mv "conftest.tmp" "conftest.in"
  45     cp "conftest.in" "conftest.nl"
  46     $as_echo 'GREP' >> "conftest.nl"
  47     "$ac_path_GREP" -e 'GREP$' -e '-(cannot match)-' < "conftest.nl" >"conftest.out" 2>/dev/null || break
  48     diff "conftest.out" "conftest.nl" >/dev/null 2>&1 || break
  49     as_fn_arith $ac_count + 1 && ac_count=$as_val
  50     if test $ac_count -gt ${ac_path_GREP_max-0}; then
  51       # Best one so far, save it but keep looking for a better one
  52       ac_cv_path_GREP="$ac_path_GREP"
  53       ac_path_GREP_max=$ac_count
  54     fi
  55     # 10*(2^10) chars as input seems more than enough
  56     test $ac_count -gt 10 && break
  57   done
  58   rm -f conftest.in conftest.tmp conftest.nl conftest.out;;
  59 esac
  60
  61       $ac_path_GREP_found && break 3
  62     done
  63   done
  64   done
  65 IFS=$as_save_IFS
  66   if test -z "$ac_cv_path_GREP"; then
  67     as_fn_error $? "no acceptable grep could be found in $PATH$PATH_SEPARATOR/usr/xpg4/bin" "$LINENO" 5
  68   fi
  69 else
  70   ac_cv_path_GREP=$GREP
  71 fi
  72
  73 fi
  74 { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_path_GREP" >&5
  75 $as_echo "$ac_cv_path_GREP" >&6; }
  76  GREP="$ac_cv_path_GREP"
  77
  78
  79 { $as_echo "$as_me:${as_lineno-$LINENO}: checking for egrep" >&5
  80 $as_echo_n "checking for egrep... " >&6; }
  81 if ${ac_cv_path_EGREP+:} false; then :
  82   $as_echo_n "(cached) " >&6
  83 else
  84   if echo a | $GREP -E '(a|b)' >/dev/null 2>&1
  85    then ac_cv_path_EGREP="$GREP -E"
  86    else
  87      if test -z "$EGREP"; then
  88   ac_path_EGREP_found=false
  89   # Loop through the user's path and test for each of PROGNAME-LIST
  90   as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
  91 for as_dir in $PATH$PATH_SEPARATOR/usr/xpg4/bin
  92 do
  93   IFS=$as_save_IFS
  94   test -z "$as_dir" && as_dir=.
  95     for ac_prog in egrep; do
  96     for ac_exec_ext in '' $ac_executable_extensions; do
  97       ac_path_EGREP="$as_dir/$ac_prog$ac_exec_ext"
  98       as_fn_executable_p "$ac_path_EGREP" || continue
  99 # Check for GNU ac_path_EGREP and select it if it is found.
 100   # Check for GNU $ac_path_EGREP
 101 case `"$ac_path_EGREP" --version 2>&1` in
 102 *GNU*)
 103   ac_cv_path_EGREP="$ac_path_EGREP" ac_path_EGREP_found=:;;
 104 *)
 105   ac_count=0
 106   $as_echo_n 0123456789 >"conftest.in"
 107   while :
 108   do
 109     cat "conftest.in" "conftest.in" >"conftest.tmp"
 110     mv "conftest.tmp" "conftest.in"
 111     cp "conftest.in" "conftest.nl"
 112     $as_echo 'EGREP' >> "conftest.nl"
 113     "$ac_path_EGREP" 'EGREP$' < "conftest.nl" >"conftest.out" 2>/dev/null || break
 114     diff "conftest.out" "conftest.nl" >/dev/null 2>&1 || break
 115     as_fn_arith $ac_count + 1 && ac_count=$as_val
 116     if test $ac_count -gt ${ac_path_EGREP_max-0}; then
 117       # Best one so far, save it but keep looking for a better one
 118       ac_cv_path_EGREP="$ac_path_EGREP"
 119       ac_path_EGREP_max=$ac_count
 120     fi
 121     # 10*(2^10) chars as input seems more than enough
 122     test $ac_count -gt 10 && break
 123   done
 124   rm -f conftest.in conftest.tmp conftest.nl conftest.out;;
 125 esac
 126
 127       $ac_path_EGREP_found && break 3
 128     done
 129   done
 130   done
 131 IFS=$as_save_IFS
 132   if test -z "$ac_cv_path_EGREP"; then
 133     as_fn_error $? "no acceptable egrep could be found in $PATH$PATH_SEPARATOR/usr/xpg4/bin" "$LINENO" 5
 134   fi
 135 else
 136   ac_cv_path_EGREP=$EGREP
 137 fi
 138
 139    fi
 140 fi
 141 { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_path_EGREP" >&5
 142 $as_echo "$ac_cv_path_EGREP" >&6; }
 143  EGREP="$ac_cv_path_EGREP"
 144
 145
 146 { $as_echo "$as_me:${as_lineno-$LINENO}: checking whether the compiler is using the ARM hard-float ABI" >&5
 147 $as_echo_n "checking whether the compiler is using the ARM hard-float ABI... " >&6; }
 148 if ${libc_cv_arm_pcs_vfp+:} false; then :
 149   $as_echo_n "(cached) " >&6
 150 else
 151   cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 152 /* end confdefs.h.  */
 153 #ifdef __ARM_PCS_VFP
 154                       yes
 155                      #endif
 156
 157 _ACEOF
 158 if (eval "$ac_cpp conftest.$ac_ext") 2>&5 |
 159   $EGREP "yes" >/dev/null 2>&1; then :
 160   libc_cv_arm_pcs_vfp=yes
 161 else
 162   libc_cv_arm_pcs_vfp=no
 163 fi
 164 rm -f conftest*
 165
 166 fi
 167 { $as_echo "$as_me:${as_lineno-$LINENO}: result: $libc_cv_arm_pcs_vfp" >&5
 168 $as_echo "$libc_cv_arm_pcs_vfp" >&6; }
 169 if test $libc_cv_arm_pcs_vfp = yes; then
 170   $as_echo "#define HAVE_ARM_PCS_VFP 1" >>confdefs.h
 171
 172   config_vars="$config_vars
 173 default-abi = hard"
 174 else
 175   config_vars="$config_vars
 176 default-abi = soft"
 177 fi
 178
 179 { $as_echo "$as_me:${as_lineno-$LINENO}: checking whether the build tools support the GNU descriptor TLS scheme" >&5
 180 $as_echo_n "checking whether the build tools support the GNU descriptor TLS scheme... " >&6; }
 181 if ${libc_cv_arm_tls_desc+:} false; then :
 182   $as_echo_n "(cached) " >&6
 183 else
 184   old_CFLAGS="$CFLAGS"
 185   CFLAGS="$CFLAGS -mtls-dialect=gnu2"
 186   cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 187 /* end confdefs.h.  */
 188 asm (".word\tfoo(tlsdesc)");
 189 int
 190 main ()
 191 {
 192
 193   ;
 194   return 0;
 195 }
 196 _ACEOF
 197 if ac_fn_c_try_compile "$LINENO"; then :
 198   libc_cv_arm_tls_desc=yes
 199 else
 200   libc_cv_arm_tls_desc=no
 201 fi
 202 rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
 203   CFLAGS="$old_CFLAGS"
 204 fi
 205 { $as_echo "$as_me:${as_lineno-$LINENO}: result: $libc_cv_arm_tls_desc" >&5
 206 $as_echo "$libc_cv_arm_tls_desc" >&6; }
 207 if test $libc_cv_arm_tls_desc = yes; then
 208   config_vars="$config_vars
 209 have-arm-tls-desc = yes"
 210 else
 211   config_vars="$config_vars
 212 have-arm-tls-desc = no"
 213 fi
 214
 215 { $as_echo "$as_me:${as_lineno-$LINENO}: checking whether PC-relative relocs in movw/movt work properly" >&5
 216 $as_echo_n "checking whether PC-relative relocs in movw/movt work properly... " >&6; }
 217 if ${libc_cv_arm_pcrel_movw+:} false; then :
 218   $as_echo_n "(cached) " >&6
 219 else
 220
 221 cat > conftest.s <<\EOF
 222         .syntax unified
 223         .arm
 224         .arch armv7-a
 225
 226         .text
 227         .globl foo
 228         .type foo,%function
 229 foo:    movw r0, #:lower16:symbol - 1f - 8
 230         movt r0, #:upper16:symbol - 1f - 8
 231 1:      add r0, pc
 232         @ And now a case with a local symbol.
 233         movw r0, #:lower16:3f - 2f - 8
 234         movt r0, #:upper16:3f - 2f - 8
 235 2:      add r0, pc
 236         bx lr
 237
 238 .data
 239         .globl symbol
 240         .hidden symbol
 241 symbol: .long 23
 242 3:      .long 17
 243 EOF
 244 libc_cv_arm_pcrel_movw=no
 245 ${CC-cc} $CFLAGS $CPPFLAGS $LDFLAGS \
 246          -nostartfiles -nostdlib -shared \
 247          -o conftest.so conftest.s 1>&5 2>&5 &&
 248 LC_ALL=C $READELF -dr conftest.so > conftest.dr 2>&5 &&
 249 {
 250   cat conftest.dr 1>&5
 251   fgrep 'TEXTREL
 252 R_ARM_NONE' conftest.dr > /dev/null || libc_cv_arm_pcrel_movw=yes
 253 }
 254 rm -f conftest*
 255 fi
 256 { $as_echo "$as_me:${as_lineno-$LINENO}: result: $libc_cv_arm_pcrel_movw" >&5
 257 $as_echo "$libc_cv_arm_pcrel_movw" >&6; }
 258 if test $libc_cv_arm_pcrel_movw = yes; then
 259   $as_echo "#define ARM_PCREL_MOVW_OK 1" >>confdefs.h
 260
 261 fi
 262
 263 # This was buggy in assemblers from GNU binutils versions before 2.25.1
 264 # (it's known to be broken in 2.24 and 2.25; see
 265 # https://sourceware.org/bugzilla/show_bug.cgi?id=18383).
 266 { $as_echo "$as_me:${as_lineno-$LINENO}: checking whether TPOFF relocs with addends are assembled correctly" >&5
 267 $as_echo_n "checking whether TPOFF relocs with addends are assembled correctly... " >&6; }
 268 if ${libc_cv_arm_tpoff_addend+:} false; then :
 269   $as_echo_n "(cached) " >&6
 270 else
 271
 272 cat > conftest.s <<\EOF
 273         .syntax unified
 274         .arm
 275         .arch armv7-a
 276
 277         .text
 278 foo:
 279         .word tbase(tpoff)+4
 280
 281         .section .tdata,"awT",%progbits
 282         .word -4
 283 tbase:  .word 0
 284         .word 4
 285 EOF
 286 libc_cv_arm_tpoff_addend=no
 287 ${CC-cc} -c $CFLAGS $CPPFLAGS \
 288          -o conftest.o conftest.s 1>&5 2>&5 &&
 289 LC_ALL=C $READELF -x.text conftest.o > conftest.x 2>&5 &&
 290 {
 291   cat conftest.x 1>&5
 292   $AWK 'BEGIN { result = 2 }
 293 $1 ~ /0x0+/ && $2 ~ /[0-9a-f]+/ {
 294 # Check for little-endian or big-endian encoding of 4 in the in-place addend.
 295   result = ($2 == "04000000" || $2 == "00000004") ? 0 : 1
 296 }
 297 END { exit(result) }
 298 ' conftest.x 2>&5 && libc_cv_arm_tpoff_addend=yes
 299 }
 300 rm -f conftest*
 301 fi
 302 { $as_echo "$as_me:${as_lineno-$LINENO}: result: $libc_cv_arm_tpoff_addend" >&5
 303 $as_echo "$libc_cv_arm_tpoff_addend" >&6; }
 304 if test $libc_cv_arm_tpoff_addend = no; then
 305   config_vars="$config_vars
 306 test-xfail-tst-tlsalign = yes"
 307   config_vars="$config_vars
 308 test-xfail-tst-tlsalign-static = yes"
 309 fi
 310
 311
 312 libc_cv_gcc_unwind_find_fde=no
 313
 314 # Remove -fno-unwind-tables that was added in sysdeps/arm/preconfigure.ac.
 315 CFLAGS=${CFLAGS% -fno-unwind-tables}