Cross Compiling MTD Utils

Cross-compiling MTD utils is tricky and eLinux wiki article is out-dated. So you may need some tweaks. As of this writing, we will use the most recent versions of :

• mtd-utils - Jul. 4 2011 snapshot
• e2fsprogs-1.41.14
• lzo-2.05
• zlib-1.2.5

As in the eLinux wiki, we take

/home/user/mtd

as build directory and

/home/user/mtd/install

as target path. First, you want extract all sources under /home/user/mtd, so your build directory looks like

zlib

Go to the source directory and execute configuration utility

~/mtd$ cd zlib-1.2.5
~/mtd/zlib-1.2.5$ ./configure --prefix=/usr

prefix option here is required if you want /usr as your target root for resulting output, otherwise /usr/local will be the target directory like most cases. We have chosen to use /usr. It is yours to decide. Before building anything you have to edit the Makefile.

CROSS = arm-none-linux-gnueabi-
CC = $(CROSS)gcc
LDSHARED = $(CROSS)gcc -shared ...
CPP = $(CROSS)gcc -E
AR = $(CROSS)ar rc
RANLIB = $(CROSS)ranlib

Then you are ready to go

~/mtd/zlib-1.2.5$ make
~/mtd/zlib-1.2.5$ make install DESTDIR=/home/user/mtd/install


lzo

lzo is cross build friendly. So it is straightforward to do.

~/mtd/lzo-2.05$ ./configure --host=arm-none-linux-gnueabi --prefix=/usr
~/mtd/lzo-2.05$ make
~/mtd/lzo-2.05$ make install DESTDIR=/home/user/mtd/install


e2fsprogs

Building e2fsprogs is same with lzo

~/mtd/e2fsprogs-1.41.14$ ./configure --host=arm-none-linux-gnueabi --prefix=/usr
~/mtd/e2fsprogs-1.41.14$ make
~/mtd/e2fsprogs-1.41.14$ make install DESTDIR=/home/user/mtd/install

But for some reason, you have to copy following two files to the target directory

~/mtd/e2fsprogs-1.41.14$ mkdir ../install/usr/include/uuid
~/mtd/e2fsprogs-1.41.14$ cp lib/uuid/uuid.h ../install/usr/include/uuid
~/mtd/e2fsprogs-1.41.14$ cp lib/libuuid.a ../install/usr/lib

Note that the target directories for the above cp operation are related to your choice of --prefix option before. If you have chosen not to change the default directory, then you have to do like:

~/mtd/e2fsprogs-1.41.14$ mkdir ../install/usr/local/include/uuid
~/mtd/e2fsprogs-1.41.14$ cp lib/uuid/uuid.h ../install/usr/local/include/uuid
~/mtd/e2fsprogs-1.41.14$ cp lib/libuuid.a ../install/usr/local/lib


mtd-utils

First, You have to edit Makefile and add following at the top of the file

INSTALLDIR = /home/user/mtd/install/usr
ZLIBCPPFLAGS = -I$(INSTALLDIR)/include
LZOCPPFLAGS = -I$(INSTALLDIR)/include
ZLIBLDFLAGS = -L$(INSTALLDIR)/lib
LZOLDFLAGS = -L$(INSTALLDIR)/lib
WITHOUT_XATTR = 1
CROSS = arm-none-linux-gnueabi-
LDFLAGS += $(ZLIBLDFLAGS) $(LZOLDFLAGS)

Again note that INSTALLDIR corresponds to --prefix option before. If you have chosen not to change the target, then your INSTALLDIR here should be

INSTALLDIR = /home/user/mtd/install/usr/local

Edit common.mk and change the CFLAGS,

CFLAGS ?= -O2 -g $(ZLIBCPPFLAGS) $(LZOCPPFLAGS)

and replace the BUILDDIR

ifndef BUILDDIR
#ifeq ($(origin CROSS),undefined)
# BUILDDIR := $(CURDIR)
#else
## Remove the trailing slash to make the directory name
# BUILDDIR := $(CURDIR)/$(CROSS:-=)
#endif
BUILDDIR := $(CURDIR)
endif

Now, you are ready to build mtd-utils

~/mtd/mtd-utils$ make
~/mtd/mtd-utils$ make install DESTDIR=/home/user/mtd/install

You can find some of precompiled files here.