google3/third_party/grte/v5_src/glibc-2.27/sysdeps/arm/configure - GRTEv5 - Git at Google

 # This file is generated from configure.ac by Autoconf.  DO NOT EDIT!
  # Local configure fragment for sysdeps/arm.

 $as_echo "#define PI_STATIC_AND_HIDDEN 1" >>confdefs.h


 # We check to see if the compiler and flags are
 # selecting the hard-float ABI and if they are then
 # we set libc_cv_arm_pcs_vfp to yes which causes
 # HAVE_ARM_PCS_VFP to be defined in config.h and
 # in include/libc-symbols.h and thus available to
 # shlib-versions to select the appropriate name for
 # the dynamic linker via %ifdef.


 { $as_echo "$as_me:${as_lineno-$LINENO}: checking for grep that handles long lines and -e" >&5
 $as_echo_n "checking for grep that handles long lines and -e... " >&6; }
 if ${ac_cv_path_GREP+:} false; then :
   $as_echo_n "(cached) " >&6
 else
   if test -z "$GREP"; then
   ac_path_GREP_found=false
   # Loop through the user's path and test for each of PROGNAME-LIST
   as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
 for as_dir in $PATH$PATH_SEPARATOR/usr/xpg4/bin
 do
   IFS=$as_save_IFS
   test -z "$as_dir" && as_dir=.
     for ac_prog in grep ggrep; do
     for ac_exec_ext in '' $ac_executable_extensions; do
       ac_path_GREP="$as_dir/$ac_prog$ac_exec_ext"
       as_fn_executable_p "$ac_path_GREP" || continue
 # Check for GNU ac_path_GREP and select it if it is found.
   # Check for GNU $ac_path_GREP
 case `"$ac_path_GREP" --version 2>&1` in
 *GNU*)
   ac_cv_path_GREP="$ac_path_GREP" ac_path_GREP_found=:;;
 *)
   ac_count=0
   $as_echo_n 0123456789 >"conftest.in"
   while :
   do
     cat "conftest.in" "conftest.in" >"conftest.tmp"
     mv "conftest.tmp" "conftest.in"
     cp "conftest.in" "conftest.nl"
     $as_echo 'GREP' >> "conftest.nl"
     "$ac_path_GREP" -e 'GREP$' -e '-(cannot match)-' < "conftest.nl" >"conftest.out" 2>/dev/null || break
     diff "conftest.out" "conftest.nl" >/dev/null 2>&1 || break
     as_fn_arith $ac_count + 1 && ac_count=$as_val
     if test $ac_count -gt ${ac_path_GREP_max-0}; then
       # Best one so far, save it but keep looking for a better one
       ac_cv_path_GREP="$ac_path_GREP"
       ac_path_GREP_max=$ac_count
     fi
     # 10*(2^10) chars as input seems more than enough
     test $ac_count -gt 10 && break
   done
   rm -f conftest.in conftest.tmp conftest.nl conftest.out;;
 esac

       $ac_path_GREP_found && break 3
     done
   done
   done
 IFS=$as_save_IFS
   if test -z "$ac_cv_path_GREP"; then
     as_fn_error $? "no acceptable grep could be found in $PATH$PATH_SEPARATOR/usr/xpg4/bin" "$LINENO" 5
   fi
 else
   ac_cv_path_GREP=$GREP
 fi

 fi
 { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_path_GREP" >&5
 $as_echo "$ac_cv_path_GREP" >&6; }
  GREP="$ac_cv_path_GREP"


 { $as_echo "$as_me:${as_lineno-$LINENO}: checking for egrep" >&5
 $as_echo_n "checking for egrep... " >&6; }
 if ${ac_cv_path_EGREP+:} false; then :
   $as_echo_n "(cached) " >&6
 else
   if echo a | $GREP -E '(a|b)' >/dev/null 2>&1
    then ac_cv_path_EGREP="$GREP -E"
    else
      if test -z "$EGREP"; then
   ac_path_EGREP_found=false
   # Loop through the user's path and test for each of PROGNAME-LIST
   as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
 for as_dir in $PATH$PATH_SEPARATOR/usr/xpg4/bin
 do
   IFS=$as_save_IFS
   test -z "$as_dir" && as_dir=.
     for ac_prog in egrep; do
     for ac_exec_ext in '' $ac_executable_extensions; do
       ac_path_EGREP="$as_dir/$ac_prog$ac_exec_ext"
       as_fn_executable_p "$ac_path_EGREP" || continue
 # Check for GNU ac_path_EGREP and select it if it is found.
   # Check for GNU $ac_path_EGREP
 case `"$ac_path_EGREP" --version 2>&1` in
 *GNU*)
   ac_cv_path_EGREP="$ac_path_EGREP" ac_path_EGREP_found=:;;
 *)
   ac_count=0
   $as_echo_n 0123456789 >"conftest.in"
   while :
   do
     cat "conftest.in" "conftest.in" >"conftest.tmp"
     mv "conftest.tmp" "conftest.in"
     cp "conftest.in" "conftest.nl"
     $as_echo 'EGREP' >> "conftest.nl"
     "$ac_path_EGREP" 'EGREP$' < "conftest.nl" >"conftest.out" 2>/dev/null || break
     diff "conftest.out" "conftest.nl" >/dev/null 2>&1 || break
     as_fn_arith $ac_count + 1 && ac_count=$as_val
     if test $ac_count -gt ${ac_path_EGREP_max-0}; then
       # Best one so far, save it but keep looking for a better one
       ac_cv_path_EGREP="$ac_path_EGREP"
       ac_path_EGREP_max=$ac_count
     fi
     # 10*(2^10) chars as input seems more than enough
     test $ac_count -gt 10 && break
   done
   rm -f conftest.in conftest.tmp conftest.nl conftest.out;;
 esac

       $ac_path_EGREP_found && break 3
     done
   done
   done
 IFS=$as_save_IFS
   if test -z "$ac_cv_path_EGREP"; then
     as_fn_error $? "no acceptable egrep could be found in $PATH$PATH_SEPARATOR/usr/xpg4/bin" "$LINENO" 5
   fi
 else
   ac_cv_path_EGREP=$EGREP
 fi

    fi
 fi
 { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_path_EGREP" >&5
 $as_echo "$ac_cv_path_EGREP" >&6; }
  EGREP="$ac_cv_path_EGREP"


 { $as_echo "$as_me:${as_lineno-$LINENO}: checking whether the compiler is using the ARM hard-float ABI" >&5
 $as_echo_n "checking whether the compiler is using the ARM hard-float ABI... " >&6; }
 if ${libc_cv_arm_pcs_vfp+:} false; then :
   $as_echo_n "(cached) " >&6
 else
   cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* end confdefs.h.  */
 #ifdef __ARM_PCS_VFP
 		      yes
 		     #endif

 _ACEOF
 if (eval "$ac_cpp conftest.$ac_ext") 2>&5 |
   $EGREP "yes" >/dev/null 2>&1; then :
   libc_cv_arm_pcs_vfp=yes
 else
   libc_cv_arm_pcs_vfp=no
 fi
 rm -f conftest*

 fi
 { $as_echo "$as_me:${as_lineno-$LINENO}: result: $libc_cv_arm_pcs_vfp" >&5
 $as_echo "$libc_cv_arm_pcs_vfp" >&6; }
 if test $libc_cv_arm_pcs_vfp = yes; then
   $as_echo "#define HAVE_ARM_PCS_VFP 1" >>confdefs.h

   config_vars="$config_vars
 default-abi = hard"
 else
   config_vars="$config_vars
 default-abi = soft"
 fi

 { $as_echo "$as_me:${as_lineno-$LINENO}: checking whether PC-relative relocs in movw/movt work properly" >&5
 $as_echo_n "checking whether PC-relative relocs in movw/movt work properly... " >&6; }
 if ${libc_cv_arm_pcrel_movw+:} false; then :
   $as_echo_n "(cached) " >&6
 else

 cat > conftest.s <<\EOF
 	.syntax unified
 	.arm
 	.arch armv7-a

 	.text
 	.globl foo
 	.type foo,%function
 foo:	movw r0, #:lower16:symbol - 1f - 8
 	movt r0, #:upper16:symbol - 1f - 8
 1:	add r0, pc
 	@ And now a case with a local symbol.
 	movw r0, #:lower16:3f - 2f - 8
 	movt r0, #:upper16:3f - 2f - 8
 2:	add r0, pc
 	bx lr

 .data
 	.globl symbol
 	.hidden symbol
 symbol:	.long 23
 3:	.long 17
 EOF
 libc_cv_arm_pcrel_movw=no
 ${CC-cc} $CFLAGS $CPPFLAGS $LDFLAGS \
 	 -nostartfiles -nostdlib -shared \
 	 -o conftest.so conftest.s 1>&5 2>&5 &&
 LC_ALL=C $READELF -dr conftest.so > conftest.dr 2>&5 &&
 {
   cat conftest.dr 1>&5
   fgrep 'TEXTREL
 R_ARM_NONE' conftest.dr > /dev/null || libc_cv_arm_pcrel_movw=yes
 }
 rm -f conftest*
 fi
 { $as_echo "$as_me:${as_lineno-$LINENO}: result: $libc_cv_arm_pcrel_movw" >&5
 $as_echo "$libc_cv_arm_pcrel_movw" >&6; }
 if test $libc_cv_arm_pcrel_movw = yes; then
   $as_echo "#define ARM_PCREL_MOVW_OK 1" >>confdefs.h

 fi

 # This was buggy in assemblers from GNU binutils versions before 2.25.1
 # (it's known to be broken in 2.24 and 2.25; see
 # https://sourceware.org/bugzilla/show_bug.cgi?id=18383).
 { $as_echo "$as_me:${as_lineno-$LINENO}: checking whether TPOFF relocs with addends are assembled correctly" >&5
 $as_echo_n "checking whether TPOFF relocs with addends are assembled correctly... " >&6; }
 if ${libc_cv_arm_tpoff_addend+:} false; then :
   $as_echo_n "(cached) " >&6
 else

 cat > conftest.s <<\EOF
 	.syntax unified
 	.arm
 	.arch armv7-a

 	.text
 foo:
 	.word tbase(tpoff)+4

 	.section .tdata,"awT",%progbits
 	.word -4
 tbase:	.word 0
 	.word 4
 EOF
 libc_cv_arm_tpoff_addend=no
 ${CC-cc} -c $CFLAGS $CPPFLAGS \
 	 -o conftest.o conftest.s 1>&5 2>&5 &&
 LC_ALL=C $READELF -x.text conftest.o > conftest.x 2>&5 &&
 {
   cat conftest.x 1>&5
   $AWK 'BEGIN { result = 2 }
 $1 ~ /0x0+/ && $2 ~ /[0-9a-f]+/ {
 # Check for little-endian or big-endian encoding of 4 in the in-place addend.
   result = ($2 == "04000000" || $2 == "00000004") ? 0 : 1
 }
 END { exit(result) }
 ' conftest.x 2>&5 && libc_cv_arm_tpoff_addend=yes
 }
 rm -f conftest*
 fi
 { $as_echo "$as_me:${as_lineno-$LINENO}: result: $libc_cv_arm_tpoff_addend" >&5
 $as_echo "$libc_cv_arm_tpoff_addend" >&6; }
 if test $libc_cv_arm_tpoff_addend = no; then
   config_vars="$config_vars
 test-xfail-tst-tlsalign = yes"
   config_vars="$config_vars
 test-xfail-tst-tlsalign-static = yes"
 fi


 libc_cv_gcc_unwind_find_fde=no

 # Remove -fno-unwind-tables that was added in sysdeps/arm/preconfigure.ac.
 CFLAGS=${CFLAGS% -fno-unwind-tables}
	# This file is generated from configure.ac by Autoconf. DO NOT EDIT!
	# Local configure fragment for sysdeps/arm.

	$as_echo "#define PI_STATIC_AND_HIDDEN 1" >>confdefs.h


	# We check to see if the compiler and flags are
	# selecting the hard-float ABI and if they are then
	# we set libc_cv_arm_pcs_vfp to yes which causes
	# HAVE_ARM_PCS_VFP to be defined in config.h and
	# in include/libc-symbols.h and thus available to
	# shlib-versions to select the appropriate name for
	# the dynamic linker via %ifdef.


	{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for grep that handles long lines and -e" >&5
	$as_echo_n "checking for grep that handles long lines and -e... " >&6; }
	if ${ac_cv_path_GREP+:} false; then :
	$as_echo_n "(cached) " >&6
	else
	if test -z "$GREP"; then
	ac_path_GREP_found=false
	# Loop through the user's path and test for each of PROGNAME-LIST
	as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
	for as_dir in $PATH$PATH_SEPARATOR/usr/xpg4/bin
	do
	IFS=$as_save_IFS
	test -z "$as_dir" && as_dir=.
	for ac_prog in grep ggrep; do
	for ac_exec_ext in '' $ac_executable_extensions; do
	ac_path_GREP="$as_dir/$ac_prog$ac_exec_ext"
	as_fn_executable_p "$ac_path_GREP" \|\| continue
	# Check for GNU ac_path_GREP and select it if it is found.
	# Check for GNU $ac_path_GREP
	case `"$ac_path_GREP" --version 2>&1` in
	GNU)
	ac_cv_path_GREP="$ac_path_GREP" ac_path_GREP_found=:;;
	*)
	ac_count=0
	$as_echo_n 0123456789 >"conftest.in"
	while :
	do
	cat "conftest.in" "conftest.in" >"conftest.tmp"
	mv "conftest.tmp" "conftest.in"
	cp "conftest.in" "conftest.nl"
	$as_echo 'GREP' >> "conftest.nl"
	"$ac_path_GREP" -e 'GREP$' -e '-(cannot match)-' < "conftest.nl" >"conftest.out" 2>/dev/null \|\| break
	diff "conftest.out" "conftest.nl" >/dev/null 2>&1 \|\| break
	as_fn_arith $ac_count + 1 && ac_count=$as_val
	if test $ac_count -gt ${ac_path_GREP_max-0}; then
	# Best one so far, save it but keep looking for a better one
	ac_cv_path_GREP="$ac_path_GREP"
	ac_path_GREP_max=$ac_count
	fi
	# 10*(2^10) chars as input seems more than enough
	test $ac_count -gt 10 && break
	done
	rm -f conftest.in conftest.tmp conftest.nl conftest.out;;
	esac

	$ac_path_GREP_found && break 3
	done
	done
	done
	IFS=$as_save_IFS
	if test -z "$ac_cv_path_GREP"; then
	as_fn_error $? "no acceptable grep could be found in $PATH$PATH_SEPARATOR/usr/xpg4/bin" "$LINENO" 5
	fi
	else
	ac_cv_path_GREP=$GREP
	fi

	fi
	{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_path_GREP" >&5
	$as_echo "$ac_cv_path_GREP" >&6; }
	GREP="$ac_cv_path_GREP"


	{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for egrep" >&5
	$as_echo_n "checking for egrep... " >&6; }
	if ${ac_cv_path_EGREP+:} false; then :
	$as_echo_n "(cached) " >&6
	else
	if echo a \| $GREP -E '(a\|b)' >/dev/null 2>&1
	then ac_cv_path_EGREP="$GREP -E"
	else
	if test -z "$EGREP"; then
	ac_path_EGREP_found=false
	# Loop through the user's path and test for each of PROGNAME-LIST
	as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
	for as_dir in $PATH$PATH_SEPARATOR/usr/xpg4/bin
	do
	IFS=$as_save_IFS
	test -z "$as_dir" && as_dir=.
	for ac_prog in egrep; do
	for ac_exec_ext in '' $ac_executable_extensions; do
	ac_path_EGREP="$as_dir/$ac_prog$ac_exec_ext"
	as_fn_executable_p "$ac_path_EGREP" \|\| continue
	# Check for GNU ac_path_EGREP and select it if it is found.
	# Check for GNU $ac_path_EGREP
	case `"$ac_path_EGREP" --version 2>&1` in
	GNU)
	ac_cv_path_EGREP="$ac_path_EGREP" ac_path_EGREP_found=:;;
	*)
	ac_count=0
	$as_echo_n 0123456789 >"conftest.in"
	while :
	do
	cat "conftest.in" "conftest.in" >"conftest.tmp"
	mv "conftest.tmp" "conftest.in"
	cp "conftest.in" "conftest.nl"
	$as_echo 'EGREP' >> "conftest.nl"
	"$ac_path_EGREP" 'EGREP$' < "conftest.nl" >"conftest.out" 2>/dev/null \|\| break
	diff "conftest.out" "conftest.nl" >/dev/null 2>&1 \|\| break
	as_fn_arith $ac_count + 1 && ac_count=$as_val
	if test $ac_count -gt ${ac_path_EGREP_max-0}; then
	# Best one so far, save it but keep looking for a better one
	ac_cv_path_EGREP="$ac_path_EGREP"
	ac_path_EGREP_max=$ac_count
	fi
	# 10*(2^10) chars as input seems more than enough
	test $ac_count -gt 10 && break
	done
	rm -f conftest.in conftest.tmp conftest.nl conftest.out;;
	esac

	$ac_path_EGREP_found && break 3
	done
	done
	done
	IFS=$as_save_IFS
	if test -z "$ac_cv_path_EGREP"; then
	as_fn_error $? "no acceptable egrep could be found in $PATH$PATH_SEPARATOR/usr/xpg4/bin" "$LINENO" 5
	fi
	else
	ac_cv_path_EGREP=$EGREP
	fi

	fi
	fi
	{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_path_EGREP" >&5
	$as_echo "$ac_cv_path_EGREP" >&6; }
	EGREP="$ac_cv_path_EGREP"


	{ $as_echo "$as_me:${as_lineno-$LINENO}: checking whether the compiler is using the ARM hard-float ABI" >&5
	$as_echo_n "checking whether the compiler is using the ARM hard-float ABI... " >&6; }
	if ${libc_cv_arm_pcs_vfp+:} false; then :
	$as_echo_n "(cached) " >&6
	else
	cat confdefs.h - <<_ACEOF >conftest.$ac_ext
	/* end confdefs.h. */
	#ifdef __ARM_PCS_VFP
	yes
	#endif

	_ACEOF
	if (eval "$ac_cpp conftest.$ac_ext") 2>&5 \|
	$EGREP "yes" >/dev/null 2>&1; then :
	libc_cv_arm_pcs_vfp=yes
	else
	libc_cv_arm_pcs_vfp=no
	fi
	rm -f conftest*

	fi
	{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $libc_cv_arm_pcs_vfp" >&5
	$as_echo "$libc_cv_arm_pcs_vfp" >&6; }
	if test $libc_cv_arm_pcs_vfp = yes; then
	$as_echo "#define HAVE_ARM_PCS_VFP 1" >>confdefs.h

	config_vars="$config_vars
	default-abi = hard"
	else
	config_vars="$config_vars
	default-abi = soft"
	fi

	{ $as_echo "$as_me:${as_lineno-$LINENO}: checking whether PC-relative relocs in movw/movt work properly" >&5
	$as_echo_n "checking whether PC-relative relocs in movw/movt work properly... " >&6; }
	if ${libc_cv_arm_pcrel_movw+:} false; then :
	$as_echo_n "(cached) " >&6
	else

	cat > conftest.s <<\EOF
	.syntax unified
	.arm
	.arch armv7-a

	.text
	.globl foo
	.type foo,%function
	foo: movw r0, #:lower16:symbol - 1f - 8
	movt r0, #:upper16:symbol - 1f - 8
	1: add r0, pc
	@ And now a case with a local symbol.
	movw r0, #:lower16:3f - 2f - 8
	movt r0, #:upper16:3f - 2f - 8
	2: add r0, pc
	bx lr

	.data
	.globl symbol
	.hidden symbol
	symbol: .long 23
	3: .long 17
	EOF
	libc_cv_arm_pcrel_movw=no
	${CC-cc} $CFLAGS $CPPFLAGS $LDFLAGS \
	-nostartfiles -nostdlib -shared \
	-o conftest.so conftest.s 1>&5 2>&5 &&
	LC_ALL=C $READELF -dr conftest.so > conftest.dr 2>&5 &&
	{
	cat conftest.dr 1>&5
	fgrep 'TEXTREL
	R_ARM_NONE' conftest.dr > /dev/null \|\| libc_cv_arm_pcrel_movw=yes
	}
	rm -f conftest*
	fi
	{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $libc_cv_arm_pcrel_movw" >&5
	$as_echo "$libc_cv_arm_pcrel_movw" >&6; }
	if test $libc_cv_arm_pcrel_movw = yes; then
	$as_echo "#define ARM_PCREL_MOVW_OK 1" >>confdefs.h

	fi

	# This was buggy in assemblers from GNU binutils versions before 2.25.1
	# (it's known to be broken in 2.24 and 2.25; see
	# https://sourceware.org/bugzilla/show_bug.cgi?id=18383).
	{ $as_echo "$as_me:${as_lineno-$LINENO}: checking whether TPOFF relocs with addends are assembled correctly" >&5
	$as_echo_n "checking whether TPOFF relocs with addends are assembled correctly... " >&6; }
	if ${libc_cv_arm_tpoff_addend+:} false; then :
	$as_echo_n "(cached) " >&6
	else

	cat > conftest.s <<\EOF
	.syntax unified
	.arm
	.arch armv7-a

	.text
	foo:
	.word tbase(tpoff)+4

	.section .tdata,"awT",%progbits
	.word -4
	tbase: .word 0
	.word 4
	EOF
	libc_cv_arm_tpoff_addend=no
	${CC-cc} -c $CFLAGS $CPPFLAGS \
	-o conftest.o conftest.s 1>&5 2>&5 &&
	LC_ALL=C $READELF -x.text conftest.o > conftest.x 2>&5 &&
	{
	cat conftest.x 1>&5
	$AWK 'BEGIN { result = 2 }
	$1 ~ /0x0+/ && $2 ~ /[0-9a-f]+/ {
	# Check for little-endian or big-endian encoding of 4 in the in-place addend.
	result = ($2 == "04000000" \|\| $2 == "00000004") ? 0 : 1
	}
	END { exit(result) }
	' conftest.x 2>&5 && libc_cv_arm_tpoff_addend=yes
	}
	rm -f conftest*
	fi
	{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $libc_cv_arm_tpoff_addend" >&5
	$as_echo "$libc_cv_arm_tpoff_addend" >&6; }
	if test $libc_cv_arm_tpoff_addend = no; then
	config_vars="$config_vars
	test-xfail-tst-tlsalign = yes"
	config_vars="$config_vars
	test-xfail-tst-tlsalign-static = yes"
	fi


	libc_cv_gcc_unwind_find_fde=no

	# Remove -fno-unwind-tables that was added in sysdeps/arm/preconfigure.ac.
	CFLAGS=${CFLAGS% -fno-unwind-tables}