diff --git a/home/shrc.zsh b/home/shrc.zsh
index 4626df3..947ed16 100644
--- a/home/shrc.zsh
+++ b/home/shrc.zsh
@@ -24,10 +24,12 @@ done
 
 export PREFIX="$HOME/opt/local"
 export CC="$(has clang || has gcc)"
+export CXX="$(has clang || has g++)"
 export CFLAGS='-march=native -O2'
 export LDFLAGS='-Wl,-O1,--sort-common,-z,relro'
 export CFLAGS="$CFLAGS -I'$HOME/opt/local/include'"
 export LDFLAGS="$LDFLAGS -L'$HOME/opt/local/lib'"
+export CXXFLAGS="$CFLAGS"
 export LD_LIBRARY_PATH= # -n isn't an option in zsh's export
 
 export EDITOR='vim -p'
diff --git a/sh/mw b/sh/mw
index 9b5454f..133f55f 100755
--- a/sh/mw
+++ b/sh/mw
@@ -4,6 +4,7 @@ mkdir -p ~/opt/mingw
 _mw_enabled=0
 _mw_host32=i686-w64-mingw32
 _mw_host64=x86_64-w64-mingw32
+_mw_hostarm=arm-linux-gnueabi
 _mw_host=$_mw_host64
 
 typeset -Ag _mw_ # cryptic math expression errors if not global!
@@ -14,36 +15,39 @@ _mw_export() {
     export "$1=$2"
 }
 
-mingw-disable() {
+mw-disable() {
     [ $_mw_enabled -eq 0 ] && return 1
     _mw_enabled=0
 
     local e=
-    for e in PATH PREFIX CC CPP CXX CFLAGS CPPFLAGS CXXFLAGS LDFLAGS AR RANLIB RC WINDRES SDL_CFLAGS SDL_LDLIBS; do
+    for e in PATH PREFIX CC CPP CXX LD CFLAGS CPPFLAGS CXXFLAGS LDFLAGS AR RANLIB RC WINDRES SDL_CFLAGS SDL_LDLIBS; do
         local v="${_mw_[$e]}"
         [ -n "$v" ] && export "$e=$v" || unset "$e"
     done
-    echo "mingw disabled"
+    echo "mw disabled"
 }
 
-mingw-enable() {
-    [ $_mw_enabled -eq 1 ] && mingw-disable || true
+mw-enable() {
+    [ $_mw_enabled -eq 1 ] && mw-disable || true
     _mw_enabled=1
 
     _mw_host=${1:-$_mw_host}
-    local _mw_misc=~/src/mxe/usr/$_mw_host
-    local _mw_bin=~/src/mxe/usr/bin
+    _mw_usr=${2:-/usr}
+
+    local _mw_misc=$_mw_usr/$_mw_host
+    local _mw_bin=$_mw_usr/bin
+
     local _mw_prefix=~/opt/$_mw_host
     mkdir -p "$_mw_prefix"
 
-    set -- CC gcc CXX g++ CPP cpp AR ar RANLIB ranlib RC windres WINDRES windres
+    set -- CC gcc CXX g++ CPP cpp LD ld AR ar RANLIB ranlib RC windres WINDRES windres
     while _mw_export "$1" "$_mw_bin/$_mw_host-$2"; do
         shift 2
     done
 
     _mw_export PATH "$PATH:$_mw_bin"
     _mw_export PREFIX "$_mw_prefix"
-    _mw_export CFLAGS "-mwin32 -O2 -I $_mw_misc/include -I $_mw_prefix/include"
+    _mw_export CFLAGS "-O2 -I $_mw_misc/include -I $_mw_prefix/include"
     _mw_export LDFLAGS "-L $_mw_misc/lib -L $_mw_prefix/lib"
     _mw_export CPPFLAGS ''
     _mw_export CXXFLAGS "$CFLAGS"
@@ -55,27 +59,35 @@ mingw-enable() {
         _mw_export SDL_LDLIBS "$($_mw_host-sdl2-config --libs)"
     }
 
-    echo "mingw enabled ($_mw_host)"
+    echo "mw enabled ($_mw_host)"
     return 0
 }
 
 mw() {
     if [ "$#" -eq 1 ]; then
-        if [ "$1" -eq 32 ]; then
-            mingw-enable $_mw_host32
-        elif [ "$1" -eq 64 ]; then
-            mingw-enable $_mw_host64
-        elif [ "$1" -eq 0 ]; then
-            mingw-disable
+        if [[ "$1" == 32 ]]; then
+            mw-enable $_mw_host32 ~/src/mxe/usr
+            export CFLAGS="-mwin32 $CFLAGS"
+            export CXXFLAGS="$CFLAGS"
+        elif [[ "$1" == 64 ]]; then
+            mw-enable $_mw_host64 ~/src/mxe/usr
+            export CFLAGS="-mwin32 $CFLAGS"
+            export CXXFLAGS="$CFLAGS"
+        elif [[ "$1" == arm ]]; then
+            mw-enable $_mw_hostarm /usr
+            export CFLAGS="-mfloat-abi=hard -mcpu=cortex-a9 $CFLAGS"
+            export CXXFLAGS="$CFLAGS"
+        elif [[ "$1" == 0 ]]; then
+            mw-disable
         else
-            echo "usage: mw [0/32/64]"
+            echo "usage: mw [0/32/64/arm]"
             return 1
         fi
     else
         if [ $_mw_enabled -eq 0 ]; then
-            mingw-enable
+            mw-enable
         else
-            mingw-disable
+            mw-disable
         fi
     fi
 }