diff --git a/build b/build
index df9271b25..b2de95416 100755
--- a/build
+++ b/build
@@ -135,6 +135,7 @@ readonly RUN_ARGS="$@"
 	echo "    gcc-6.1.0 (6.1.0 release)"
 	echo "    gcc-6.2.0 (6.2.0 release)"
 	echo "    gcc-6.3.0 (6.3.0 release)"
+	echo "    gcc-6.4.0 (6.4.0 release)"
 	echo "    gcc-6-branch (currently 6.4.0-prerelease)"
 	echo "    gcc-7.1.0 (currently 7.1.0 release)"
 	echo "    gcc-7-branch (currently 7.2.0-prerelease)"
diff --git a/library/config.sh b/library/config.sh
index 4ddcd182f..04999afff 100644
--- a/library/config.sh
+++ b/library/config.sh
@@ -35,7 +35,7 @@
 
 # **************************************************************************
 
-MINGW_W64_BUILDS_VERSION="MinGW-W64-builds-4.3.0"
+MINGW_W64_BUILDS_VERSION="MinGW-W64-builds-4.3.3"
 MINGW_W64_PKG_STRING="Built by MinGW-W64 project"
 
 # **************************************************************************
diff --git a/patches/gcc/gcc-libgomp-ftime64.patch b/patches/gcc/gcc-libgomp-ftime64.patch
new file mode 100644
index 000000000..4f414f41c
--- /dev/null
+++ b/patches/gcc/gcc-libgomp-ftime64.patch
@@ -0,0 +1,13 @@
+--- gcc/libgomp/config/mingw32/time.c
++++ gcc/libgomp/config/mingw32/time.c
+@@ -31,8 +31,8 @@
+ double
+ omp_get_wtime (void)
+ {
+-  struct _timeb timebuf;
+-  _ftime (&timebuf);
++  struct __timeb64 timebuf;
++  _ftime64 (&timebuf);
+   return (timebuf.time + (long)(timebuf.millitm) / 1e3);
+ }
+ 
diff --git a/patches/gdb/gdb-7.12-dynamic-libs.patch b/patches/gdb/gdb-7.12-dynamic-libs.patch
new file mode 100644
index 000000000..867770e94
--- /dev/null
+++ b/patches/gdb/gdb-7.12-dynamic-libs.patch
@@ -0,0 +1,36 @@
+From 04a27a15b268e07c76578c074c3822477ceabc50 Mon Sep 17 00:00:00 2001
+From: Orgad Shaneh <orgads@gmail.com>
+Date: Tue, 7 Mar 2017 19:13:41 +0200
+Subject: [PATCH] configure: Disable static linking with standard libs
+
+Linking statically causes spurious crashes on exception handling
+with mingw32.
+---
+ configure | 4 ++--
+ 1 file changed, 2 insertions(+), 2 deletions(-)
+
+diff --git a/configure b/configure
+index a5f4fc5aa7..f5a9766c39 100755
+--- a/configure
++++ b/configure
+@@ -5902,7 +5902,7 @@ else
+  # if supported.  But if the user explicitly specified the libraries to use,
+  # trust that they are doing what they want.
+  if test "$stage1_libs" = "" -a "$have_static_libs" = yes; then
+-   stage1_ldflags="-static-libstdc++ -static-libgcc"
++   stage1_ldflags=""
+  fi
+ fi
+ 
+@@ -5938,7 +5938,7 @@ else
+  # statically.  But if the user explicitly specified the libraries to
+  # use, trust that they are doing what they want.
+  if test "$poststage1_libs" = ""; then
+-   poststage1_ldflags="-static-libstdc++ -static-libgcc"
++   poststage1_ldflags=""
+  fi
+ fi
+ 
+-- 
+2.12.0.windows.1
+
diff --git a/scripts/binutils.sh b/scripts/binutils.sh
index c7a82acd9..c7bd30f23 100644
--- a/scripts/binutils.sh
+++ b/scripts/binutils.sh
@@ -35,7 +35,7 @@
 
 # **************************************************************************
 
-PKG_VERSION=2.27
+PKG_VERSION=2.28
 PKG_NAME=binutils-${PKG_VERSION}
 [[ $USE_MULTILIB == yes ]] && {
 	PKG_NAME=$BUILD_ARCHITECTURE-$PKG_NAME-multi
@@ -58,7 +58,6 @@ PKG_PATCHES=(
 	binutils/0008-fix-libiberty-makefile.mingw.patch
 	binutils/0009-fix-libiberty-configure.mingw.patch
 	binutils/0110-binutils-mingw-gnu-print.patch
-	binutils/0018-binutils-PC64-PCRQUAD-relocation-fix.mingw32.patch
 )
 
 #
diff --git a/scripts/gcc-6-branch.sh b/scripts/gcc-6-branch.sh
index 3ba8e7d8b..27d983db3 100644
--- a/scripts/gcc-6-branch.sh
+++ b/scripts/gcc-6-branch.sh
@@ -60,8 +60,8 @@ PKG_PATCHES=(
 	gcc/gcc-5-dwarf-regression.patch
 	gcc/gcc-5.1.0-fix-libatomic-building-for-threads=win32.patch
 	gcc/gcc-6-ktietz-libgomp.patch
-#	gcc/gcc-7-filesystem.patch
 	gcc/gcc-6.1-disable-weak-refs.patch
+	gcc/gcc-libgomp-ftime64.patch
 )
 
 #
diff --git a/scripts/gcc-6.3.0.sh b/scripts/gcc-6.3.0.sh
index 79afe57a5..92f03f657 100644
--- a/scripts/gcc-6.3.0.sh
+++ b/scripts/gcc-6.3.0.sh
@@ -60,7 +60,6 @@ PKG_PATCHES=(
 	gcc/gcc-5-dwarf-regression.patch
 	gcc/gcc-5.1.0-fix-libatomic-building-for-threads=win32.patch
 	gcc/gcc-6-ktietz-libgomp.patch
-#	gcc/gcc-7-filesystem.patch
 	gcc/gcc-6.1-disable-weak-refs.patch
 )
 
diff --git a/scripts/gcc-6.4.0.sh b/scripts/gcc-6.4.0.sh
new file mode 100644
index 000000000..f94f9f6d8
--- /dev/null
+++ b/scripts/gcc-6.4.0.sh
@@ -0,0 +1,154 @@
+
+#
+# The BSD 3-Clause License. http://www.opensource.org/licenses/BSD-3-Clause
+#
+# This file is part of MinGW-W64(mingw-builds: https://github.com/niXman/mingw-builds) project.
+# Copyright (c) 2011-2017 by niXman (i dotty nixman doggy gmail dotty com)
+# Copyright (c) 2012-2015 by Alexpux (alexpux doggy gmail dotty com)
+# All rights reserved.
+#
+# Project: MinGW-W64 ( http://sourceforge.net/projects/mingw-w64/ )
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions are met:
+# - Redistributions of source code must retain the above copyright
+#     notice, this list of conditions and the following disclaimer.
+# - Redistributions in binary form must reproduce the above copyright
+#     notice, this list of conditions and the following disclaimer in
+#     the documentation and/or other materials provided with the distribution.
+# - Neither the name of the 'MinGW-W64' nor the names of its contributors may
+#     be used to endorse or promote products derived from this software
+#     without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+# A PARTICULAR PURPOSE ARE DISCLAIMED.
+# IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY
+# DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+# (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+# CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+# OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
+# USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+#
+
+# **************************************************************************
+
+PKG_VERSION=6.4.0
+PKG_NAME=gcc-${PKG_VERSION}
+PKG_DIR_NAME=gcc-${PKG_VERSION}
+PKG_TYPE=.tar.xz
+PKG_URLS=(
+	"https://ftp.gnu.org/gnu/gcc/gcc-${PKG_VERSION}/gcc-${PKG_VERSION}${PKG_TYPE}"
+)
+
+PKG_PRIORITY=main
+
+#
+
+PKG_EXECUTE_AFTER_UNCOMPRESS=(
+    "[[ ! -f libgcc/config/i386/enable-execute-stack.c ]] && cp libgcc/config/i386/enable-execute-stack-mingw32.c libgcc/config/i386/enable-execute-stack.c"
+)
+
+#
+
+PKG_PATCHES=(
+	gcc/gcc-4.7-stdthreads.patch
+	gcc/gcc-5.1-iconv.patch
+	gcc/gcc-4.8-libstdc++export.patch
+	gcc/gcc-4.8.2-build-more-gnattools.mingw.patch
+	gcc/gcc-4.8.2-fix-for-windows-not-minding-non-existant-parent-dirs.patch
+	gcc/gcc-4.8.2-windows-lrealpath-no-force-lowercase-nor-backslash.patch
+	gcc/gcc-4.9.1-enable-shared-gnat-implib.mingw.patch
+	gcc/gcc-5.1.0-make-xmmintrin-header-cplusplus-compatible.patch
+	gcc/gcc-5.2-fix-mingw-pch.patch
+	gcc/gcc-5-dwarf-regression.patch
+	gcc/gcc-5.1.0-fix-libatomic-building-for-threads=win32.patch
+	gcc/gcc-6-ktietz-libgomp.patch
+	gcc/gcc-6.1-disable-weak-refs.patch
+	gcc/gcc-7-filesystem.patch
+	gcc/gcc-libgomp-ftime64.patch
+)
+
+#
+
+PKG_CONFIGURE_FLAGS=(
+	--host=$HOST
+	--build=$BUILD
+	--target=$TARGET
+	#
+	--prefix=$MINGWPREFIX
+	--with-sysroot=$PREFIX
+	#--with-gxx-include-dir=$MINGWPREFIX/$TARGET/include/c++
+	#
+	$LINK_TYPE_GCC
+	#
+	$( [[ $USE_MULTILIB == yes ]] \
+		&& echo "--enable-targets=all --enable-multilib" \
+		|| echo "--disable-multilib" \
+	)
+	--enable-languages=$ENABLE_LANGUAGES,lto
+	--enable-libstdcxx-time=yes
+	--enable-threads=$THREADS_MODEL
+	--enable-libgomp
+	--enable-libatomic
+	--enable-lto
+	--enable-graphite
+	--enable-checking=release
+	--enable-fully-dynamic-string
+	--enable-version-specific-runtime-libs
+	--enable-libstdcxx-filesystem-ts=yes
+	$( [[ $EXCEPTIONS_MODEL == dwarf ]] \
+		&& echo "--disable-sjlj-exceptions --with-dwarf2" \
+	)
+	$( [[ $EXCEPTIONS_MODEL == sjlj ]] \
+		&& echo "--enable-sjlj-exceptions" \
+	)
+	#
+	--disable-libstdcxx-pch
+	--disable-libstdcxx-debug
+	$( [[ $BOOTSTRAPING == yes ]] \
+		&& echo "--enable-bootstrap" \
+		|| echo "--disable-bootstrap" \
+	)
+	--disable-rpath
+	--disable-win32-registry
+	--disable-nls
+	--disable-werror
+	--disable-symvers
+	#
+	--with-gnu-as
+	--with-gnu-ld
+	#
+	$PROCESSOR_OPTIMIZATION
+	$PROCESSOR_TUNE
+	#
+	--with-libiconv
+	--with-system-zlib
+	--with-{gmp,mpfr,mpc,isl}=$PREREQ_DIR/$HOST-$LINK_TYPE_SUFFIX
+	--with-pkgversion="\"$BUILD_ARCHITECTURE-$THREADS_MODEL-$EXCEPTIONS_MODEL${REV_STRING}, $MINGW_W64_PKG_STRING\""
+	--with-bugurl=$BUG_URL
+	#
+	CFLAGS="\"$COMMON_CFLAGS\""
+	CXXFLAGS="\"$COMMON_CXXFLAGS\""
+	CPPFLAGS="\"$COMMON_CPPFLAGS\""
+	LDFLAGS="\"$COMMON_LDFLAGS $( [[ $BUILD_ARCHITECTURE == i686 ]] && echo -Wl,--large-address-aware )\""
+)
+
+#
+
+PKG_MAKE_FLAGS=(
+	-j$JOBS
+	all
+)
+
+#
+
+PKG_INSTALL_FLAGS=(
+	-j1
+	DESTDIR=$BASE_BUILD_DIR
+	$( [[ $STRIP_ON_INSTALL == yes ]] && echo install-strip || echo install )
+)
+
+# **************************************************************************
diff --git a/scripts/gcc-7-branch.sh b/scripts/gcc-7-branch.sh
index 9f7243796..2560c7bde 100644
--- a/scripts/gcc-7-branch.sh
+++ b/scripts/gcc-7-branch.sh
@@ -61,6 +61,7 @@ PKG_PATCHES=(
 	gcc/gcc-6-ktietz-libgomp.patch
 	gcc/gcc-6.1-disable-weak-refs.patch
 	gcc/gcc-7-filesystem.patch
+	gcc/gcc-libgomp-ftime64.patch
 )
 
 #
diff --git a/scripts/gcc-7.1.0.sh b/scripts/gcc-7.1.0.sh
index fd01f9698..3833b5998 100644
--- a/scripts/gcc-7.1.0.sh
+++ b/scripts/gcc-7.1.0.sh
@@ -61,6 +61,7 @@ PKG_PATCHES=(
 	gcc/gcc-6-ktietz-libgomp.patch
 	gcc/gcc-6.1-disable-weak-refs.patch
 	gcc/gcc-7-filesystem.patch
+	gcc/gcc-libgomp-ftime64.patch
 )
 
 #
diff --git a/scripts/gcc-trunk.sh b/scripts/gcc-trunk.sh
index 5a1267aab..5db264614 100644
--- a/scripts/gcc-trunk.sh
+++ b/scripts/gcc-trunk.sh
@@ -60,6 +60,7 @@ PKG_PATCHES=(
 	gcc/gcc-6-ktietz-libgomp.patch
 	gcc/gcc-6.1-disable-weak-refs.patch
 	gcc/gcc-7-filesystem.patch
+	gcc/gcc-libgomp-ftime64.patch
 )
 
 #
diff --git a/scripts/gdb.sh b/scripts/gdb.sh
index 4ef73263a..ef039437b 100644
--- a/scripts/gdb.sh
+++ b/scripts/gdb.sh
@@ -35,7 +35,7 @@
 
 # **************************************************************************
 
-PKG_VERSION=7.11.1
+PKG_VERSION=8.0
 PKG_NAME=gdb-${PKG_VERSION}
 PKG_DIR_NAME=gdb-${PKG_VERSION}
 PKG_TYPE=.tar.xz
@@ -53,6 +53,7 @@ PKG_PATCHES=(
 	# http://sourceware.org/bugzilla/show_bug.cgi?id=15412
 	gdb/gdb-perfomance.patch
 	gdb/gdb-fix-using-gnu-print.patch
+	gdb/gdb-7.12-dynamic-libs.patch
 )
 
 #