commit 4c38abe0967bad78dd6baa61c86923e4d4b346d3
Author: Ben Gamari <ben@smart-cactus.org>
Date:   Sun Nov 5 13:14:19 2017 -0500

    Fix it

diff --git a/config/gcc-plugin.m4 b/config/gcc-plugin.m4
index dd06a58..f4435b8 100644
--- a/config/gcc-plugin.m4
+++ b/config/gcc-plugin.m4
@@ -13,6 +13,32 @@ dnl the same distribution terms as the rest of that program.
 # Sets the shell variables enable_plugin and pluginlibs.
 AC_DEFUN([GCC_ENABLE_PLUGINS],
   [# Check for plugin support
+
+   # Figure out what objdump we will be using.
+   AS_VAR_SET_IF(gcc_cv_objdump,, [
+   if test -f $gcc_cv_binutils_srcdir/configure.ac \
+        && test -f ../binutils/Makefile \
+        && test x$build = x$host; then
+   	# Single tree build which includes binutils.
+   	gcc_cv_objdump=../binutils/objdump$build_exeext
+   elif test -x objdump$build_exeext; then
+   	gcc_cv_objdump=./objdump$build_exeext
+   elif ( set dummy $OBJDUMP_FOR_TARGET; test -x $[2] ); then
+           gcc_cv_objdump="$OBJDUMP_FOR_TARGET"
+   else
+           AC_PATH_PROG(gcc_cv_objdump, $OBJDUMP_FOR_TARGET)
+   fi])
+   
+   AC_MSG_CHECKING(what objdump to use)
+   if test "$gcc_cv_objdump" = ../binutils/objdump$build_exeext; then
+   	# Single tree build which includes binutils.
+   	AC_MSG_RESULT(newly built objdump)
+   elif test x$gcc_cv_objdump = x; then
+   	AC_MSG_RESULT(not found)
+   else
+   	AC_MSG_RESULT($gcc_cv_objdump)
+   fi
+
    AC_ARG_ENABLE(plugin,
    [AS_HELP_STRING([--enable-plugin], [enable plugin support])],
    enable_plugin=$enableval,