diff options
Diffstat (limited to 'configure')
| -rwxr-xr-x | configure | 47 |
1 files changed, 47 insertions, 0 deletions
diff --git a/configure b/configure index 285a6537f0..f30c31afdc 100755 --- a/configure +++ b/configure @@ -664,6 +664,7 @@ INSTALL_PROGRAM sysnames submachine multi_arch +libc_cv_textrel_ifunc no_stack_protector stack_protector libc_cv_ssp @@ -4052,6 +4053,52 @@ fi { $as_echo "$as_me:${as_lineno-$LINENO}: result: $libc_cv_gcc_indirect_function" >&5 $as_echo "$libc_cv_gcc_indirect_function" >&6; } +# Check if linker supports textrel relocation with ifunc (used on elf/tests). +# Note that it relies on libc_cv_ld_gnu_indirect_function test above. +{ $as_echo "$as_me:${as_lineno-$LINENO}: checking whether the linker supports textrels along with ifunc" >&5 +$as_echo_n "checking whether the linker supports textrels along with ifunc... " >&6; } +if ${libc_cv_textrel_ifunc+:} false; then : + $as_echo_n "(cached) " >&6 +else + cat > conftest.S <<EOF +.type foo,%gnu_indirect_function +foo: +.globl _start +_start: +.globl __start +__start: +.data +#ifdef _LP64 +.quad foo +#else +.long foo +#endif +.text +.globl address +address: +#ifdef _LP64 +.quad address +#else +.long address +#endif +EOF +libc_cv_textrel_ifunc=no +if test $libc_cv_ld_gnu_indirect_function = yes; then + if { ac_try='${CC-cc} $CFLAGS $CPPFLAGS $LDFLAGS -nostartfiles -nostdlib $no_ssp -pie -o conftest conftest.S' + { { eval echo "\"\$as_me\":${as_lineno-$LINENO}: \"$ac_try\""; } >&5 + (eval $ac_try) 2>&5 + ac_status=$? + $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5 + test $ac_status = 0; }; }; then + libc_cv_textrel_ifunc=yes + fi +fi +rm -f conftest* +fi +{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $libc_cv_textrel_ifunc" >&5 +$as_echo "$libc_cv_textrel_ifunc" >&6; } + + # Check if gcc warns about alias for function with incompatible types. { $as_echo "$as_me:${as_lineno-$LINENO}: checking if compiler warns about alias for function with incompatible types" >&5 $as_echo_n "checking if compiler warns about alias for function with incompatible types... " >&6; } |