diff options
Diffstat (limited to 'sysdeps/x86_64/configure')
| -rwxr-xr-x | sysdeps/x86_64/configure | 35 |
1 files changed, 35 insertions, 0 deletions
diff --git a/sysdeps/x86_64/configure b/sysdeps/x86_64/configure index b4a80b8035..418cc4a9b8 100755 --- a/sysdeps/x86_64/configure +++ b/sysdeps/x86_64/configure @@ -25,6 +25,41 @@ printf "%s\n" "$libc_cv_cc_mprefer_vector_width" >&6; } config_vars="$config_vars config-cflags-mprefer-vector-width = $libc_cv_cc_mprefer_vector_width" +{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for linker that supports -z mark-plt" >&5 +printf %s "checking for linker that supports -z mark-plt... " >&6; } +libc_linker_feature=no +cat > conftest.c <<EOF +int _start (void) { return 42; } +EOF +if { ac_try='${CC-cc} $CFLAGS $CPPFLAGS $LDFLAGS $no_ssp + -Wl,-z,mark-plt -nostdlib -nostartfiles + -fPIC -shared -o conftest.so conftest.c + 1>&5' + { { eval echo "\"\$as_me\":${as_lineno-$LINENO}: \"$ac_try\""; } >&5 + (eval $ac_try) 2>&5 + ac_status=$? + printf "%s\n" "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5 + test $ac_status = 0; }; } +then + if ${CC-cc} $CFLAGS $CPPFLAGS $LDFLAGS $no_ssp -Wl,-z,mark-plt -nostdlib \ + -nostartfiles -fPIC -shared -o conftest.so conftest.c 2>&1 \ + | grep "warning: -z mark-plt ignored" > /dev/null 2>&1; then + true + else + libc_linker_feature=yes + fi +fi +rm -f conftest* +if test $libc_linker_feature = yes; then + libc_cv_z_mark_plt=yes +else + libc_cv_z_mark_plt=no +fi +{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $libc_linker_feature" >&5 +printf "%s\n" "$libc_linker_feature" >&6; } +config_vars="$config_vars +have-z-mark-plt = $libc_cv_z_mark_plt" + if test x"$build_mathvec" = xnotset; then build_mathvec=yes fi |