Alex Suykov had do some work for this purpose,and my compile script is based on her patch.

Steps

Step 1:

Download perl source code from perl’s official site,such as:

wget http://www.cpan.org/src/5.0/perl-5.20.2.tar.gz

Step 2:

Download the corresponding perl cross compile patch from Alex Suykov ‘s site.

wget https://raw.github.com/arsv/perl-cross/releases/perl-5.20.2-cross-0.9.7.tar.gz

Step 3:

Extract the source code to the some diretory.

tar xvzf perl-5.20.2.tar.gz
tar xvzf perl-5.20.2-cross-0.9.7.tar.gz

Step 4:

Edit the configure script below to generate the Makefile,replace the paths to your own,such as:

/home/username/arm/gcc/bin
/home/username/arm/dist/lib
/home/username/arm/dist
…

Be careful! :
Do not add --target-tools-prefix=arm-none-linux-gnueabi- into you configure arguments,otherwise you will get some strange error during the configure stage.

Installation script file:

unset LD_LIBRARY_PATH LIBRARY_PATH CPATH C_INCLUDE_PATH PKG_CONFIG_PATH CPLUS_INCLUDE_PATH INCLUDE
export PATH=$PATH:/home/username/arm/gcc/bin

LDFLAGS='-L/home/username/arm/dist/lib' LD=/home/username/arm/gcc/bin/arm-none-linux-gnueabi-ld AR=/home/username/arm/gcc/bin/arm-none-linux-gnueabi-ar RANLIB=/home/username/arm/gcc/bin/arm-none-linux-gnueabi-ranlib NM=/home/username/arm/gcc/bin/arm-none-linux-gnueabi-nm READELF=/home/username/arm/gcc/bin/arm-none-linux-gnueabi-readelf OBJDUMP=/home/username/arm/gcc/bin/arm-none-linux-gnueabi-objdump CC=/home/username/arm/gcc/bin/arm-none-linux-gnueabi-gcc CXX=/home/username/arm/gcc/bin/arm-none-linux-gnueabi-g++ CFLAGS='--sysroot=/home/username/arm/gcc/arm-none-linux-gnueabi/sys-root' ./configure --target=arm-linux --host=arm-linux-gnueabi --prefix=/home/username/arm/dist

Step 3:

After the configure stage finish successfully.
Run the make command to start the make stage:

make -j4

Step 4:

After the make stage finish successfully.
Run the install command to start the install stage:

make install

Step 5:

Copy the cross compile result to you device,and check the result by run perl from console:

perl –version

If u get the correct version info,u succeed !

Ref:
1. http://arsv.github.io/perl-cross/index.html
2. http://www.cpan.org/src/5.0/perl-5.20.2.tar.gz
2. https://github.com/SynoCommunity/spksrc/issues/138