[src/trunk]: src/external/gpl3/gcc/dist/gcc Detect advance_loc support with r...

[joerg <joerg%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/163cc89f543c
branches:  trunk
changeset: 355186:163cc89f543c
user:      joerg <joerg%NetBSD.org@localhost>
date:      Mon Jul 17 19:55:13 2017 +0000

description:
Detect advance_loc support with readelf, not objdump. The latter is
broken in some situations before binutils 2.28.

diffstat:

 external/gpl3/gcc/dist/gcc/configure    |  2 +-
 external/gpl3/gcc/dist/gcc/configure.ac |  2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diffs (24 lines):

diff -r 4c1d44aadc18 -r 163cc89f543c external/gpl3/gcc/dist/gcc/configure
--- a/external/gpl3/gcc/dist/gcc/configure      Mon Jul 17 19:53:50 2017 +0000
+++ b/external/gpl3/gcc/dist/gcc/configure      Mon Jul 17 19:55:13 2017 +0000
@@ -22891,7 +22891,7 @@
   test $ac_status = 0; }; }
     then
 
-if $gcc_cv_objdump -Wf conftest.o 2>/dev/null \
+if $gcc_cv_readelf --debug-dump=frames conftest.o 2>/dev/null \
     | grep 'DW_CFA_advance_loc[24]:[   ][      ]*75040[        ]' >/dev/null; then
    gcc_cv_as_cfi_advance_working=yes
 fi
diff -r 4c1d44aadc18 -r 163cc89f543c external/gpl3/gcc/dist/gcc/configure.ac
--- a/external/gpl3/gcc/dist/gcc/configure.ac   Mon Jul 17 19:53:50 2017 +0000
+++ b/external/gpl3/gcc/dist/gcc/configure.ac   Mon Jul 17 19:55:13 2017 +0000
@@ -2693,7 +2693,7 @@
        .cfi_adjust_cfa_offset 128
        .cfi_endproc],
 [[
-if $gcc_cv_objdump -Wf conftest.o 2>/dev/null \
+if $gcc_cv_readelf --debug-dump=frames conftest.o 2>/dev/null \
     | grep 'DW_CFA_advance_loc[24]:[   ][      ]*75040[        ]' >/dev/null; then
    gcc_cv_as_cfi_advance_working=yes
 fi