diff --git a/rules/libswiftnav/default.bash b/rules/libswiftnav/default.bash
new file mode 100644
index 0000000..a8aa979
--- /dev/null
+++ b/rules/libswiftnav/default.bash
@@ -0,0 +1,78 @@
+version=\
+(
+    '0.11'
+)
+
+url=\
+(
+    "https://github.com/swift-nav/libswiftnav/archive/v$version.tar.gz"
+)
+
+md5=\
+(
+    '54e4d1bf00f116147f28cb92520e7e7d'
+)
+
+maintainer=\
+(
+    'Kristian Klausen <kristian.klausen@itk.ntnu.no>'
+)
+
+requires=\
+(
+    'cmake/host'
+)
+
+post_unpack()
+{
+    patches=$(ls "$pkg_dir/patches/$version/"*.patch\
+	"$cfg_dir_system/patches/libswiftnav/"*.patch 2>/dev/null)
+    if [ -n "$patches" ]; then
+        cat $patches | patch -p1
+    fi
+}
+
+configure()
+{
+
+
+    mkdir -p ../build &&
+    cd ../build
+    echo "$cmd_target_cc" 
+    ${cfg_dir_toolchain}/usr/local/bin/cmake \
+        -DCROSS="$cmd_target_cc" \
+	    -DCMAKE_BUILD_TYPE=Release \
+	    -DCMAKE_C_COMPILER="${cmd_target_cc}"                         \
+        -DCMAKE_CXX_COMPILER="${cmd_target_cxx}"                      \
+        -DCMAKE_FIND_ROOT_PATH="${cfg_dir_toolchain_sysroot}/usr" \
+        -DCMAKE_FIND_ROOT_PATH_MODE_INCLUDE=ONLY \
+        -DCMAKE_INSTALL_PREFIX="$cfg_dir_toolchain_sysroot/usr" \
+        -DCMAKE_C_FLAGS="${cfg_target_gcc_flags} -fPIC" \
+        -DCMAKE_SYSTEM_NAME="Linux" \
+        -DCMAKE_SYSTEM_PROCESSOR="$cfg_architecture" \
+        "../libswiftnav-$version"
+
+}
+
+build()
+{
+    cd  ${pkg_build_dir}/../build &&
+    $cmd_make
+}
+
+host_install()
+{
+    cd  ${pkg_build_dir}/../build &&
+    $cmd_make install
+}
+
+target_install()
+{
+    for f in "$cfg_dir_toolchain_sysroot/usr/lib/"libswiftnav*so; do
+        if [ -L "$f" ]; then
+            cp -vd "$f" "$cfg_dir_rootfs/lib"
+        else
+            $cmd_target_strip -v "$f" -o "$cfg_dir_rootfs/lib/$(basename "$f")"
+        fi
+    done
+}
diff --git a/systems/lctr-b2xx/patches/libswiftnav/arith.patch b/systems/lctr-b2xx/patches/libswiftnav/arith.patch
new file mode 100644
index 0000000..a1cdb0a
--- /dev/null
+++ b/systems/lctr-b2xx/patches/libswiftnav/arith.patch
@@ -0,0 +1,11 @@
+diff -Nru libswiftnav-0.11/clapack-3.2.1-CMAKE/F2CLIBS/libf2c/arith_cortex-a8.h libswiftnav-0.11.kk/clapack-3.2.1-CMAKE/F2CLIBS/libf2c/arith_cortex-a8.h
+--- libswiftnav-0.11/clapack-3.2.1-CMAKE/F2CLIBS/libf2c/arith_cortex-a8.h	1970-01-01 01:00:00.000000000 +0100
++++ libswiftnav-0.11.kk/clapack-3.2.1-CMAKE/F2CLIBS/libf2c/arith_cortex-a8.h	2014-10-23 08:28:34.888000000 +0200
+@@ -0,0 +1,7 @@
++/* arith.h definitions for ARM Cortex-A8
++ * Calculated by running arithchk on a Beaglebone Black. */
++#define IEEE_8087
++#define Arith_Kind_ASL 1
++#define Double_Align
++#define QNaN0 0x0
++#define QNaN1 0x7ff80000