Build a static linked, small dmsetup tool

======== Source Code ========
use an old version of dmsetup
http://vault.centos.org/5.3/os/SRPMS/device-mapper-1.02.28-2.el5.src.rpm
https://www.fefe.de/dietlibc/dietlibc-0.34.tar.xz

======== Build Envrioment ======== 
build for 32bit, static linked with dietlibc
1. install centos 6.10 i386 with CentOS-6.10-i386-bin-DVD1.iso
2. yum install gcc kernel-devel package
3. install dietc libc (just make && make install)
4. export PATH=$PATH:/opt/diet/bin

======== Build Step ======== 
1. extract device mapper source code
2. CC="diet gcc" ./configure --disable-nls  --disable-selinux --disable-shared
3. modify include/configure.h file
   --- delete the line with "#define malloc rpl_malloc"
   --- add 2 defines as follow:
       #ifndef UINT32_MAX
       #define UINT32_MAX  (4294967295U)
       #endif
       
       #ifndef UINT64_C
       #define UINT64_C(c) c ## ULL
       #endif
   
4. make
5. strip dmsetup/dmsetup
6. get dmsetup/dmsetup as the dmsetup32 binary file






======================== Build for 64bit dmsetup =========================
1. extract device mapper source code
2. ./configure --disable-nls  --disable-selinux --disable-shared  --enable-static_link CC='gcc -specs /usr/local/musl/lib/musl-gcc.specs'
3. touch include/linux/limits.h include/linux/types.h   
   echo '#include <sys/mount.h>' > include/linux/fs.h
4. make
5. strip --strip-all dmsetup/dmsetup.static
6. get dmsetup/dmsetup.static as the dmsetup64 binary file


======================== Build for arm64 dmsetup =========================
1. extract device mapper source code
2. ./configure CC=aarch64-linux-gcc --target=arm --host=x86_64-linux-gnu --disable-nls  --disable-selinux --disable-shared  --enable-static_link
3. modify include/configure.h file
   --- delete the line with "#define malloc rpl_malloc"
4. make
5. aarch64-linux-strip dmsetup/dmsetup.static
6. get dmsetup/dmsetup.static as the dmsetupaa64 binary file





