+dnl GDB_AC_WITH_DIR([VARIABLE], [ARG-NAME], [HELP], [DEFAULT])
+dnl Add a new --with option that defines a directory.
+dnl The result is stored in VARIABLE. AC_DEFINE_DIR is called
+dnl on this variable, as is AC_SUBST.
+dnl ARG-NAME is the base name of the argument (without "--with").
+dnl HELP is the help text to use.
+dnl If the user's choice is relative to the prefix, then the
+dnl result is relocatable, then this will define the C macro
+dnl VARIABLE_RELOCATABLE to 1; otherwise it is defined as 0.
+dnl DEFAULT is the default value, which is used if the user
+dnl does not specify the argument.
+AC_DEFUN([GDB_AC_WITH_DIR], [
+ AC_ARG_WITH([$2], AS_HELP_STRING([--with-][$2][=PATH], [$3]), [
+ [$1]=$withval], [[$1]=[$4]])
+ AC_DEFINE_DIR([$1], [$1], [$3])
+ AC_SUBST([$1])
+ GDB_AC_DEFINE_RELOCATABLE([$1], [$2], ${ac_define_dir})
+ ])
+
+dnl GDB_AC_CHECK_BFD([MESSAGE], [CV], [CODE], [HEADER])
+dnl Check whether BFD provides a feature.
+dnl MESSAGE is the "checking" message to display.
+dnl CV is the name of the cache variable where the result is stored.
+dnl The result will be "yes" or "no".
+dnl CODE is some code to compile that checks for the feature.
+dnl A link test is run.
+dnl HEADER is the name of an extra BFD header to include.
+AC_DEFUN([GDB_AC_CHECK_BFD], [
+ OLD_CFLAGS=$CFLAGS
+ OLD_LDFLAGS=$LDFLAGS
+ OLD_LIBS=$LIBS
+ # Put the old CFLAGS/LDFLAGS last, in case the user's (C|LD)FLAGS
+ # points somewhere with bfd, with -I/foo/lib and -L/foo/lib. We
+ # always want our bfd.
+ CFLAGS="-I${srcdir}/../include -I../bfd -I${srcdir}/../bfd $CFLAGS"
+ LDFLAGS="-L../bfd -L../libiberty $LDFLAGS"
+ intl=`echo $LIBINTL | sed 's,${top_builddir}/,,g'`
+ # -ldl is provided by bfd/Makfile.am (LIBDL) <PLUGINS>.
+ if test "$plugins" = "yes"; then
+ AC_SEARCH_LIBS(dlopen, dl)
+ fi
+ LIBS="-lbfd -liberty $intl $LIBS"
+ AC_CACHE_CHECK([$1], [$2],
+ [AC_TRY_LINK(
+ [#include <stdlib.h>
+ #include "bfd.h"
+ #include "$4"
+ ],
+ [return $3;], [[$2]=yes], [[$2]=no])])
+ CFLAGS=$OLD_CFLAGS
+ LDFLAGS=$OLD_LDFLAGS
+ LIBS=$OLD_LIBS])