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git://sourceware.org/git/glibc.git
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ARM: Use /lib/ld-linux-armhf.so.3 for the hard-float ABI.
The hard-float ABI will now use /lib/ld-linux-armhf.so.3. We detect the use of the hard-float ABI and select the appropriate dynamic linker name. You must have a new or patched compiler which also uses the new dynamic loader name when the hard-float ABI is selected.
This commit is contained in:
Carlos O'Donell
parent
567ce24cd1
commit
d3b36017d4
@ -1,3 +1,11 @@
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2012-05-07 Carlos O'Donell <carlos_odonell@mentor.com>
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* sysdeps/arm/configure.in: Set libc_cv_arm_pcs_vfp.
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If libc_cv_arm_pcs_vfp equals yes then define HAVE_ARM_PCS_VFP.
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* sysdeps/arm/configure: Regenerate.
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* sysdeps/arm/shlib-versions: If HAVE_ARM_PCS_VFP is defined
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then use ld=/lib/ld-linux-armhf.so.3.
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2012-05-01 Joseph Myers <joseph@codesourcery.com>
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[BZ #14043]
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184
sysdeps/arm/configure
vendored
Normal file → Executable file
184
sysdeps/arm/configure
vendored
Normal file → Executable file
@ -16,6 +16,23 @@ as_fn_exit ()
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as_fn_set_status $1
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exit $1
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} # as_fn_exit
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# as_fn_arith ARG...
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# ------------------
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# Perform arithmetic evaluation on the ARGs, and store the result in the
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# global $as_val. Take advantage of shells that can avoid forks. The arguments
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# must be portable across $(()) and expr.
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if (eval "test \$(( 1 + 1 )) = 2") 2>/dev/null; then :
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eval 'as_fn_arith ()
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{
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as_val=$(( $* ))
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}'
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else
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as_fn_arith ()
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{
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as_val=`expr "$@" || test $? -eq 1`
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}
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fi # as_fn_arith
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if expr a : '\(a\)' >/dev/null 2>&1 &&
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test "X`expr 00001 : '.*\(...\)'`" = X001; then
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as_expr=expr
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@ -149,3 +166,170 @@ $as_echo "$libc_cv_asm_cfi_directive_sections" >&6; }
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if test $libc_cv_asm_cfi_directive_sections != yes; then
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as_fn_error $? "need .cfi_sections in this configuration" "$LINENO" 5
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fi
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# We check to see if the compiler and flags are
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# selecting the hard-float ABI and if they are then
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# we set libc_cv_arm_pcs_vfp to yes which causes
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# HAVE_ARM_PCS_VFP to be defined in config.h and
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# in include/libc-symbols.h and thus available to
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# shlib-versions to select the appropriate name for
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# the dynamic linker via %ifdef.
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{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for grep that handles long lines and -e" >&5
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$as_echo_n "checking for grep that handles long lines and -e... " >&6; }
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if ${ac_cv_path_GREP+:} false; then :
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$as_echo_n "(cached) " >&6
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else
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if test -z "$GREP"; then
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ac_path_GREP_found=false
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# Loop through the user's path and test for each of PROGNAME-LIST
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as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
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for as_dir in $PATH$PATH_SEPARATOR/usr/xpg4/bin
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do
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IFS=$as_save_IFS
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test -z "$as_dir" && as_dir=.
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for ac_prog in grep ggrep; do
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for ac_exec_ext in '' $ac_executable_extensions; do
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ac_path_GREP="$as_dir/$ac_prog$ac_exec_ext"
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{ test -f "$ac_path_GREP" && $as_test_x "$ac_path_GREP"; } || continue
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# Check for GNU ac_path_GREP and select it if it is found.
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# Check for GNU $ac_path_GREP
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case `"$ac_path_GREP" --version 2>&1` in
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*GNU*)
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ac_cv_path_GREP="$ac_path_GREP" ac_path_GREP_found=:;;
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*)
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ac_count=0
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$as_echo_n 0123456789 >"conftest.in"
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while :
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do
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cat "conftest.in" "conftest.in" >"conftest.tmp"
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mv "conftest.tmp" "conftest.in"
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cp "conftest.in" "conftest.nl"
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$as_echo 'GREP' >> "conftest.nl"
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"$ac_path_GREP" -e 'GREP$' -e '-(cannot match)-' < "conftest.nl" >"conftest.out" 2>/dev/null || break
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diff "conftest.out" "conftest.nl" >/dev/null 2>&1 || break
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as_fn_arith $ac_count + 1 && ac_count=$as_val
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if test $ac_count -gt ${ac_path_GREP_max-0}; then
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# Best one so far, save it but keep looking for a better one
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ac_cv_path_GREP="$ac_path_GREP"
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ac_path_GREP_max=$ac_count
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fi
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# 10*(2^10) chars as input seems more than enough
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test $ac_count -gt 10 && break
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done
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rm -f conftest.in conftest.tmp conftest.nl conftest.out;;
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esac
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$ac_path_GREP_found && break 3
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done
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done
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done
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IFS=$as_save_IFS
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if test -z "$ac_cv_path_GREP"; then
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as_fn_error $? "no acceptable grep could be found in $PATH$PATH_SEPARATOR/usr/xpg4/bin" "$LINENO" 5
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fi
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else
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ac_cv_path_GREP=$GREP
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fi
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fi
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{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_path_GREP" >&5
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$as_echo "$ac_cv_path_GREP" >&6; }
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GREP="$ac_cv_path_GREP"
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{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for egrep" >&5
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$as_echo_n "checking for egrep... " >&6; }
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if ${ac_cv_path_EGREP+:} false; then :
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$as_echo_n "(cached) " >&6
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else
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if echo a | $GREP -E '(a|b)' >/dev/null 2>&1
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then ac_cv_path_EGREP="$GREP -E"
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else
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if test -z "$EGREP"; then
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ac_path_EGREP_found=false
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# Loop through the user's path and test for each of PROGNAME-LIST
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as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
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for as_dir in $PATH$PATH_SEPARATOR/usr/xpg4/bin
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do
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IFS=$as_save_IFS
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test -z "$as_dir" && as_dir=.
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for ac_prog in egrep; do
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for ac_exec_ext in '' $ac_executable_extensions; do
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ac_path_EGREP="$as_dir/$ac_prog$ac_exec_ext"
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{ test -f "$ac_path_EGREP" && $as_test_x "$ac_path_EGREP"; } || continue
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# Check for GNU ac_path_EGREP and select it if it is found.
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# Check for GNU $ac_path_EGREP
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case `"$ac_path_EGREP" --version 2>&1` in
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*GNU*)
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ac_cv_path_EGREP="$ac_path_EGREP" ac_path_EGREP_found=:;;
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*)
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ac_count=0
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$as_echo_n 0123456789 >"conftest.in"
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while :
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do
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cat "conftest.in" "conftest.in" >"conftest.tmp"
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mv "conftest.tmp" "conftest.in"
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cp "conftest.in" "conftest.nl"
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$as_echo 'EGREP' >> "conftest.nl"
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"$ac_path_EGREP" 'EGREP$' < "conftest.nl" >"conftest.out" 2>/dev/null || break
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diff "conftest.out" "conftest.nl" >/dev/null 2>&1 || break
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as_fn_arith $ac_count + 1 && ac_count=$as_val
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if test $ac_count -gt ${ac_path_EGREP_max-0}; then
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# Best one so far, save it but keep looking for a better one
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ac_cv_path_EGREP="$ac_path_EGREP"
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ac_path_EGREP_max=$ac_count
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fi
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# 10*(2^10) chars as input seems more than enough
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test $ac_count -gt 10 && break
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done
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rm -f conftest.in conftest.tmp conftest.nl conftest.out;;
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esac
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$ac_path_EGREP_found && break 3
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done
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done
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done
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IFS=$as_save_IFS
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if test -z "$ac_cv_path_EGREP"; then
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as_fn_error $? "no acceptable egrep could be found in $PATH$PATH_SEPARATOR/usr/xpg4/bin" "$LINENO" 5
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fi
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else
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ac_cv_path_EGREP=$EGREP
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fi
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fi
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fi
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{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_path_EGREP" >&5
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$as_echo "$ac_cv_path_EGREP" >&6; }
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EGREP="$ac_cv_path_EGREP"
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{ $as_echo "$as_me:${as_lineno-$LINENO}: checking whether the compiler is using the ARM hard-float ABI" >&5
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$as_echo_n "checking whether the compiler is using the ARM hard-float ABI... " >&6; }
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if ${libc_cv_arm_pcs_vfp+:} false; then :
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$as_echo_n "(cached) " >&6
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else
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cat confdefs.h - <<_ACEOF >conftest.$ac_ext
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/* end confdefs.h. */
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#ifdef __ARM_PCS_VFP
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yes
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#endif
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_ACEOF
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if (eval "$ac_cpp conftest.$ac_ext") 2>&5 |
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$EGREP "yes" >/dev/null 2>&1; then :
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libc_cv_arm_pcs_vfp=yes
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else
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libc_cv_arm_pcs_vfp=no
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fi
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rm -f conftest*
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fi
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{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $libc_cv_arm_pcs_vfp" >&5
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$as_echo "$libc_cv_arm_pcs_vfp" >&6; }
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if test $libc_cv_arm_pcs_vfp = yes; then
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$as_echo "#define HAVE_ARM_PCS_VFP 1" >>confdefs.h
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fi
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@ -49,3 +49,20 @@ EOF
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if test $libc_cv_asm_cfi_directive_sections != yes; then
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AC_MSG_ERROR([need .cfi_sections in this configuration])
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fi
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# We check to see if the compiler and flags are
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# selecting the hard-float ABI and if they are then
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# we set libc_cv_arm_pcs_vfp to yes which causes
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# HAVE_ARM_PCS_VFP to be defined in config.h and
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# in include/libc-symbols.h and thus available to
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# shlib-versions to select the appropriate name for
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# the dynamic linker via %ifdef.
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AC_CACHE_CHECK([whether the compiler is using the ARM hard-float ABI],
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[libc_cv_arm_pcs_vfp],
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[AC_EGREP_CPP(yes,[#ifdef __ARM_PCS_VFP
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yes
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#endif
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], libc_cv_arm_pcs_vfp=yes, libc_cv_arm_pcs_vfp=no)])
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if test $libc_cv_arm_pcs_vfp = yes; then
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AC_DEFINE(HAVE_ARM_PCS_VFP)
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fi
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@ -1,3 +1,9 @@
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arm.*-.*-linux-gnueabi.* DEFAULT GLIBC_2.4
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arm.*-.*-linux-gnueabi.* ld=ld-linux.so.3
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%ifdef HAVE_ARM_PCS_VFP
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# The EABI-derived hard-float ABI uses a new dynamic linker.
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arm.*-.*-linux-gnueabi.* ld=ld-linux-armhf.so.3
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%else
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# The EABI-derived soft-float ABI continues to use ld-linux.so.3.
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arm.*-.*-linux-gnueabi.* ld=ld-linux.so.3
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%endif
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