http://gcc.gnu.org/bugzilla/show_bug.cgi?id=57792
--- Comment #7 from Jack Howarth <howarth at nitro dot med.uc.edu> ---
(In reply to Jack Howarth from comment #6)
My mistake in mixing host_configargs and build_configargs. The following patch
works fine…
Index: configure.ac
===================================================================
--- configure.ac (revision 200683)
+++ configure.ac (working copy)
@@ -2848,6 +2848,13 @@ if test x${is_cross_compiler} = xyes ; t
target_configargs="--with-cross-host=${host_noncanonical}
${target_configargs}"
fi
+# Pass --with-sysroot on darwin without SDK in /
+case "${target}" in
+ x86_64-*-darwin1[[3-9]]*)
+ host_configargs="--with-sysroot=\"`xcrun --show-sdk-path`\"
${host_configargs}"
+ ;;
+esac
+
# Default to --enable-multilib.
if test x${enable_multilib} = x ; then
target_configargs="--enable-multilib ${target_configargs}"
