diff --git a/meta/recipes-devtools/gcc/gcc-multilib-config.inc b/meta/recipes-devtools/gcc/gcc-multilib-config.inc
new file mode 100644
index 0000000..f7f9f55
--- /dev/null
+++ b/meta/recipes-devtools/gcc/gcc-multilib-config.inc
@@ -0,0 +1,227 @@
+# following code modifies these definitions in the gcc config
+#    MULTILIB_OPTIONS
+#    MULTILIB_DIRNAMES
+#    MULTILIB_OSDIRNAMES
+#    GLIBC_DYNAMIC_LINKER32
+#    GLIBC_DYNAMIC_LINKER64
+#    GLIBC_DYNAMIC_LINKERX32
+#    GLIBC_DYNAMIC_LINKERN32
+#  For more information on use of these variables look at these files in the gcc source code
+#    gcc/config/i386/t-linux64
+#    gcc/config/mips/t-linux64
+#    gcc/config/rs6000/t-linux64
+#    gcc/config/i386/linux64.h
+#    gcc/config/mips/linux64.h
+#    gcc/config/rs6000/linux64.h
+
+MULTILIB_OPTION_WHITELIST ??= "-m32 -m64 -mx32 -mabi=n32 -mabi=32 -mabi=64" 
+
+python gcc_multilib_setup() {
+    import re
+    import shutil
+    import glob
+
+    srcdir = d.getVar('S', True)
+    builddir = d.getVar('B', True)
+    src_conf_dir = '%s/gcc/config' % srcdir
+    build_conf_dir = '%s/gcc/config' % builddir
+
+    bb.utils.remove(build_conf_dir, True)
+    ml_globs = ('%s/*/t-linux64' % src_conf_dir,
+                '%s/*/linux64.h' % src_conf_dir,
+                '%s/*/linux.h' % src_conf_dir,
+                '%s/linux.h' % src_conf_dir)
+
+    # copy the target multilib config files to ${B}
+    for ml_glob in ml_globs:
+        for fn in glob.glob(ml_glob):
+            rel_path = os.path.relpath(fn, src_conf_dir)
+            parent_dir = os.path.dirname(rel_path)
+            bb.utils.mkdirhier('%s/%s' % (build_conf_dir, parent_dir))
+            bb.utils.copyfile(fn, '%s/%s' % (build_conf_dir, rel_path))
+
+    pn = d.getVar('PN', True)
+    multilibs = (d.getVar('MULTILIB_VARIANTS', True) or '').split()
+    if not multilibs and pn != "nativesdk-gcc":
+        return
+
+    mlprefix = d.getVar('MLPREFIX', True)
+
+    if ('%sgcc' % mlprefix) != pn and (not pn.startswith('gcc-cross-canadian')) and pn != "nativesdk-gcc":
+        return
+
+
+    def write_config(root, files, options, dirnames, osdirnames):
+        for ml_conf_file in files:
+            with open(root + '/' + ml_conf_file, 'r') as f:
+                filelines = f.readlines()
+                # recreate multilib configuration variables
+                substs = [
+                    (r'^(\s*(MULTILIB_OPTIONS\s*=).*)$', r'\2 %s' % '/'.join(options)),
+                    (r'^(\s*MULTILIB_OPTIONS\s*\+=.*)$', ''),
+                    (r'^(\s*(MULTILIB_DIRNAMES\s*=).*)$', r'\2 %s' % ' '.join(dirnames)),
+                    (r'^(\s*MULTILIB_DIRNAMES\s*\+=.*)$', ''),
+                    (r'^(\s*(MULTILIB_OSDIRNAMES\s*=).*)$', r'\2 %s' % ' '.join(osdirnames)),
+                    (r'^(\s*MULTILIB_OSDIRNAMES\s*\+=.*)$', ''),
+                ]
+
+                for (i, line) in enumerate(filelines):
+                    for subst in substs:
+                        line = re.sub(subst[0], subst[1], line)
+                    filelines[i] = line
+
+                with open(root + '/' + ml_conf_file, 'w') as f:
+                    f.write(''.join(filelines))
+
+    def write_headers(root, files, libdir32, libdir64, libdirx32, libdirn32):
+        def wrap_libdir(libdir):
+            if libdir.find('SYSTEMLIBS_DIR') != -1:
+                return '"%r"'
+            else:
+                return '"/%s/"' % libdir
+
+        for ml_conf_file in files:
+            fn = root + '/' + ml_conf_file
+            if not os.path.exists(fn):
+                continue
+            with open(fn, 'r') as f:
+                filelines = f.readlines()
+
+                # replace lines like
+                # #define GLIBC_DYNAMIC_LINKER32 SYSTEMLIBS_DIR "ld-linux.so.2"
+                # by
+                # #define GLIBC_DYNAMIC_LINKER32 "/lib/" "ld-linux.so.2"
+                # this is needed to put the correct dynamic loader path in the generated binaries
+                substs = [
+                    (r'^(#define\s*GLIBC_DYNAMIC_LINKER32\s*)(\S+)(\s*\".*\")$',
+                        r'\1' + wrap_libdir(libdir32) + r'\3'),
+                    (r'^(#define\s*GLIBC_DYNAMIC_LINKER64\s*)(\S+)(\s*\"\S+\")$',
+                        r'\1' + wrap_libdir(libdir64) + r'\3'),
+                    (r'^(#define\s*GLIBC_DYNAMIC_LINKER64\s*\"\S+\"\s*)(\S+)(\s*\"\S+\"\s*)(\S+)(\s*\".*\")$',
+                        r'\1' + wrap_libdir(libdir64) + r'\3' + wrap_libdir(libdir64) + r'\5'),
+                    (r'^(#define\s*GLIBC_DYNAMIC_LINKERX32\s*)(\S+)(\s*\".*\")$',
+                        r'\1' + wrap_libdir(libdirx32) + r'\3'),
+                    (r'^(#define\s*GLIBC_DYNAMIC_LINKERN32\s*)(\S+)(\s*\".*\")$',
+                        r'\1' + wrap_libdir(libdirn32) + r'\3'),
+                    (r'^(#define\s*UCLIBC_DYNAMIC_LINKER32\s*)(\S+)(\s*\".*\")$',
+                        r'\1' + wrap_libdir(libdir32) + r'\3'),
+                    (r'^(#define\s*UCLIBC_DYNAMIC_LINKER64\s*)(\S+)(\s*\".*\")$',
+                        r'\1' + wrap_libdir(libdir64) + r'\3'),
+                    (r'^(#define\s*UCLIBC_DYNAMIC_LINKERN32\s*)(\S+)(\s*\".*\")$',
+                        r'\1' + wrap_libdir(libdirn32) + r'\3'),
+                    (r'^(#define\s*UCLIBC_DYNAMIC_LINKER\b\s*)(\S+)(\s*\".*\")$',
+                        r'\1' + wrap_libdir(libdir32) + r'\3'),
+                ]
+
+                for (i, line) in enumerate(filelines):
+                    for subst in substs:
+                        line = re.sub(subst[0], subst[1], line)
+                    filelines[i] = line
+
+                with open(root + '/' + ml_conf_file, 'w') as f:
+                    f.write(''.join(filelines))
+
+
+    gcc_target_config_files = {
+        'x86_64'    : ['gcc/config/i386/t-linux64'],
+        'i586'      : ['gcc/config/i386/t-linux64'],
+        'i686'      : ['gcc/config/i386/t-linux64'],
+        'mips'      : ['gcc/config/mips/t-linux64'],
+        'mips64'    : ['gcc/config/mips/t-linux64'],
+        'powerpc'   : ['gcc/config/rs6000/t-linux64'],
+        'powerpc64' : ['gcc/config/rs6000/t-linux64'],
+    }
+
+    gcc_header_config_files = {
+        'x86_64'    : ['gcc/config/i386/linux64.h'],
+        'i586'      : ['gcc/config/i386/linux64.h'],
+        'i686'      : ['gcc/config/i386/linux64.h'],
+        'mips'      : ['gcc/config/mips/linux.h', 'gcc/config/mips/linux64.h'],
+        'mips64'    : ['gcc/config/mips/linux.h', 'gcc/config/mips/linux64.h'],
+        'powerpc'   : ['gcc/config/rs6000/linux64.h'],
+        'powerpc64' : ['gcc/config/rs6000/linux64.h'],
+    }
+
+    libdir32 = 'SYSTEMLIBS_DIR'
+    libdir64 = 'SYSTEMLIBS_DIR'
+    libdirx32 = 'SYSTEMLIBS_DIR'
+    libdirn32 = 'SYSTEMLIBS_DIR'
+
+
+    target_arch = (d.getVar('TARGET_ARCH_MULTILIB_ORIGINAL', True) if mlprefix
+                    else d.getVar('TARGET_ARCH', True))
+    if pn == "nativesdk-gcc":
+        header_config_files = gcc_header_config_files[d.getVar("SDK_ARCH", True)]
+        write_headers(builddir, header_config_files, libdir32, libdir64, libdirx32, libdirn32)
+        return
+
+    if target_arch not in gcc_target_config_files:
+        bb.warn('gcc multilib setup is not supported for TARGET_ARCH=' + target_arch)
+        return
+
+    target_config_files = gcc_target_config_files[target_arch]
+    header_config_files = gcc_header_config_files[target_arch]
+
+    ml_list = ['DEFAULTTUNE_MULTILIB_ORIGINAL' if mlprefix else 'DEFAULTTUNE']
+    mltunes = [('DEFAULTTUNE_virtclass-multilib-%s' % ml) for ml in multilibs]
+    if mlprefix:
+        mlindex = 0
+        for ml in multilibs:
+            if mlprefix == ml + '-':
+                break
+            mlindex += 1
+
+        ml_list.extend(mltunes[:mlindex] + ['DEFAULTTUNE'] + mltunes[(mlindex + 1):])
+    else:
+        ml_list.extend(mltunes)
+
+    options = []
+    dirnames = []
+    osdirnames = []
+    optsets = []
+
+    for ml in ml_list:
+        tune = d.getVar(ml, True)
+        if not tune:
+            bb.warn("%s doesn't have a corresponding tune. Skipping..." % ml)
+            continue
+        tune_parameters = get_tune_parameters(tune, d)
+
+        tune_baselib = tune_parameters['baselib']
+        if not tune_baselib:
+            bb.warn("Tune %s doesn't have a baselib set. Skipping..." % tune)
+            continue
+
+        if tune_baselib == 'lib64':
+            libdir64 = tune_baselib
+        elif tune_baselib == 'libx32':
+            libdirx32 = tune_baselib
+        elif tune_baselib == 'lib32':
+            libdirn32 = tune_baselib
+        elif tune_baselib == 'lib':
+            libdir32 = tune_baselib
+        else:
+            bb.error('Unknown libdir (%s) of the tune : %s' % (tune_baselib, tune))
+
+        # take out '-' mcpu='s and march='s from parameters
+        opts = []
+        whitelist = (d.getVar("MULTILIB_OPTION_WHITELIST", True) or "").split()
+        for i in tune_parameters['ccargs'].split():
+            if i in whitelist:
+                # Need to strip '-' from option
+                opts.append(i[1:])
+        options.append(" ".join(opts))
+
+        if tune_baselib == 'lib':
+            dirnames.append('32')  # /lib => 32bit lib
+        else:
+            dirnames.append(tune_baselib.replace('lib', ''))
+        osdirnames.append('../' + tune_baselib)
+
+    write_config(builddir, target_config_files, options, dirnames, osdirnames)
+    write_headers(builddir, header_config_files, libdir32, libdir64, libdirx32, libdirn32)
+}
+
+gcc_multilib_setup[cleandirs] = "${B}/gcc/config"
+
+EXTRACONFFUNCS += "gcc_multilib_setup"