2 files changed, 35 insertions, 3 deletions

diff --git a/arch/x86/tools/Makefile b/arch/x86/tools/Makefile
index 4688f90ce5a2..f82082677337 100644
--- a/arch/x86/tools/Makefile
+++ b/arch/x86/tools/Makefile
@@ -1,13 +1,22 @@
 PHONY += posttest
 
 ifeq ($(KBUILD_VERBOSE),1)
-  postest_verbose = -v
+  posttest_verbose = -v
 else
-  postest_verbose =
+  posttest_verbose =
 endif
 
+ifeq ($(CONFIG_64BIT),y)
+  posttest_64bit = -y
+else
+  posttest_64bit = -n
+endif
+
+distill_awk = $(srctree)/arch/x86/tools/distill.awk
+chkobjdump = $(srctree)/arch/x86/tools/chkobjdump.awk
+
 quiet_cmd_posttest = TEST    $@
-      cmd_posttest = $(OBJDUMP) -d -j .text $(objtree)/vmlinux | awk -f $(srctree)/arch/x86/tools/distill.awk | $(obj)/test_get_len -$(CONFIG_64BIT) $(posttest_verbose)
+      cmd_posttest = ($(OBJDUMP) -v | $(AWK) -f $(chkobjdump)) || $(OBJDUMP) -d -j .text $(objtree)/vmlinux | $(AWK) -f $(distill_awk) | $(obj)/test_get_len $(posttest_64bit) $(posttest_verbose)
 
 posttest: $(obj)/test_get_len vmlinux
         $(call cmd,posttest)
diff --git a/arch/x86/tools/chkobjdump.awk b/arch/x86/tools/chkobjdump.awk
new file mode 100644
index 000000000000..0d13cd9fdcff
--- /dev/null
+++ b/arch/x86/tools/chkobjdump.awk
@@ -0,0 +1,23 @@
+# GNU objdump version checker
+#
+# Usage:
+# objdump -v | awk -f chkobjdump.awk
+BEGIN {
+        # objdump version 2.19 or later is OK for the test.
+        od_ver = 2;
+        od_sver = 19;
+}
+
+/^GNU/ {
+        split($4, ver, ".");
+        if (ver[1] > od_ver ||
+            (ver[1] == od_ver && ver[2] >= od_sver)) {
+                exit 1;
+        } else {
+                printf("Warning: objdump version %s is older than %d.%d\n",
+                       $4, od_ver, od_sver);
+                print("Warning: Skipping posttest.");
+                # Logic is inverted, because we just skip test without error.
+                exit 0;
+        }
+}