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busybox中没有flash_erase，在线升级不方便，所以打算从源码交叉编译mtd-utils
【1】下载源码包
http://download.savannah.gnu.org/releases/acl/
http://download.savannah.gnu.org/releases/attr/
http://www.zlib.net/
http://www.oberhumer.com/opensource/lzo/download/
http://sourceforge.net/projects/libuuid/
ftp://ftp.infradead.org/pub/mtd-utils/
【2】交叉编译
【2.1】准备编译目录。所有的库编译完成后都将安装到该路径下，之后的库也将从该路径中寻找头文件的库文件
sudo mkdir /opt/omapl138_root sudo chown user:user /opt/omapl138_root
【2.2】attr
tar xf attr-2.4.47.src.tar.gz cd attr-2.4.47 ./configure --host=arm-none-linux-gnueabi --prefix=/opt/omapl138_root/ make make install-dev make install-lib
make install
【2.3】acl
tar xf acl-2.2.52.src.tar.gz cd acl-2.2.52 ./configure --host=arm-none-linux-gnueabi --prefix=/opt/omapl138_root/ CFLAGS="-I/opt/omapl138_root/include" LDFLAGS="-L/opt/omapl138_root/lib" make make install make install-lib make install-dev
【2.4】zlib
tar xf zlib-1.2.8.tar.xz cd zlib-1.2.8 CC=arm-none-linux-gnueabi-gcc ./configure --prefix=/opt/omapl138_root/ CC=arm-none-linux-gnueabi-gcc make make install
【2.5】lzo
tar xf lzo-2.09.tar.gz cd lzo-2.09/ ./configure --host=arm-none-linux-gnueabi --prefix=/opt/omapl138_root/ make make install
【2.6】libuuid
tar xf libuuid-1.0.3.tar.gz cd libuuid-1.0.3/ ./configure --host=arm-none-linux-gnueabi --prefix=/opt/omapl138_root/ make make install
【2.7】mtd-utils
tar xf mtd-utils-1.5.2.tar.bz2 cd mtd-utils-1.5.2/ CFLAGS="-I/opt/omapl138_root/include" LDFLAGS="-L/opt/omapl138_root/lib" make install CROSS=arm-none-linux-gnueabi- DESTDIR=/opt/omapl138_root
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原文地址：http://www.cnblogs.com/hua946/p/4742534.html
