+ # Test if the assembler supports the extended form of the .section
+ # directive that specifies section alignment. LTO support uses this,
+ # but normally only after installation, so we warn but don't fail the
+ # configure if LTO is enabled but the assembler does not support it.
+ { $as_echo "$as_me:${as_lineno-$LINENO}: checking assembler for .section with alignment" >&5
+$as_echo_n "checking assembler for .section with alignment... " >&6; }
+if test "${gcc_cv_as_section_has_align+set}" = set; then :
+ $as_echo_n "(cached) " >&6
+else
+ gcc_cv_as_section_has_align=no
+ if test $in_tree_gas = yes; then
+ if test $gcc_cv_gas_vers -ge `expr \( \( 2 \* 1000 \) + 20 \) \* 1000 + 1`
+ then gcc_cv_as_section_has_align=yes
+fi
+ elif test x$gcc_cv_as != x; then
+ echo '.section lto_test,"dr0"' > conftest.s
+ if { ac_try='$gcc_cv_as $gcc_cv_as_flags -fatal-warnings -o conftest.o conftest.s >&5'
+ { { eval echo "\"\$as_me\":${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
+ gcc_cv_as_section_has_align=yes
+ else
+ echo "configure: failed program was" >&5
+ cat conftest.s >&5
+ fi
+ rm -f conftest.o conftest.s
+ fi
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $gcc_cv_as_section_has_align" >&5
+$as_echo "$gcc_cv_as_section_has_align" >&6; }
+
+ if test x$gcc_cv_as_section_has_align != xyes; then
+ case ",$enable_languages," in
+ *,lto,*)
+ { $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: LTO for $target requires binutils >= 2.20.1, but version found appears insufficient; LTO will not work until binutils is upgraded." >&5
+$as_echo "$as_me: WARNING: LTO for $target requires binutils >= 2.20.1, but version found appears insufficient; LTO will not work until binutils is upgraded." >&2;}
+ ;;
+ esac
+ fi