mruby

md

メモ
===

## 環境

* debian wheezy

## summon-arm-toolchain

```
$ git clone git@github.com:esden/summon-arm-toolchain.git
$ cd summon-arm-toolchain
```

`Makefile`を編集
```
diff --git a/summon-arm-toolchain b/summon-arm-toolchain                                    
index c546703..138b6da 100755                                                               
--- a/summon-arm-toolchain                                                                  
+++ b/summon-arm-toolchain                                                                  
@@ -570,6 +570,8 @@ if [ $LIBOPENCM3_EN != 0 ]; then                                        
 if [ ! -e ${STAMPS}/${LIBOPENCM3}.build ]; then                                            
     unpack ${LIBOPENCM3}                                                                   
     cd ${LIBOPENCM3}                                                                       
+    log "Patching Makefile"                                                                
+    sed -i".org" -e "s/cpu=cortex-m0plus/cpu=cortex-m4/g" ./lib/stm32/l0/Makefile          
     log "Building ${LIBOPENCM3}"                                                           
     make PREFIX=${TARGET} DESTDIR=${DESTDIR}${DESTDIR:+/}${PREFIX}                         
     install ${LIBOPENCM3} PREFIX=${TARGET} DESTDIR=${DESTDIR}${DESTDIR:+/}${PREFIX} install
```

```
$ apt-get install flex bison libgmp3-dev libmpfr-dev libncurses5-dev \
    libmpc-dev autoconf texinfo build-essential libftdi-dev zlib1g-dev \
    git zlib1g-dev python-yaml
$ apt-get build-dep gcc-4.5 git zlib1g-dev python-yaml
./summon-arm-toolchain
```

## newlib-nano

```
$ git clone git@github.com:32bitmicro/newlib-nano-1.0.git
$ cd newlib-nano-1.0
$ export PATH=<armのgccとかがあるパス>:$PATH
$ ./configure --target=arm-none-eabi --disable-newlib-supplied-syscalls \
 --enable-newlib-reent-small --disable-newlib-fvwrite-in-streamio --disable-newlib-fseek-optimization \
 --disable-newlib-wide-orient --enable-newlib-nano-malloc --disable-newlib-unbuf-stream-opt --enable-lite-exit \
 --enable-newlib-globa-atexit --disable-nls
```

`arm-none-eabi/thumb/cortex-m3/libgloss/libnosys/libnosys.a`、
`arm-none-eabi/thumb/cortex-m3/newlib/libm.a`、
`arm-none-eabi/thumb/cortex-m3/newlib/libg.a`、
`arm-none-eabi/thumb/cortex-m3/newlib/libc.a`
を利用