Question

I have successfully configure perl for cross comile by using configure options:

./Configure -des -Dusecrosscompile \
    -Dtargethost=172.17.185.91 \
    -Dtargetdir=/home/perl/ \
    -Dtargetuser=root \
    -Dtargetarch=arm-linux \
    -Dcc=arm-linux-gcc \
    -Dusrinc=/opt/Mozart_Toolchain/arm-eabi-uclibc/include/ \
    -Dincpth=/opt/Mozart_Toolchain/arm-eabi-uclibc/include/ \
    -Dlibpth=/opt/Mozart_Toolchain/arm-eabi-uclibc/lib/

And the configure script tell me “Now you must run ‘make’.” But I encounter such as error when I make:

`sh  cflags "optimize='-O2'" miniperlmain.o`  miniperlmain.c
  CCCMD =  arm-linux-gcc -DPERL_CORE -c -DOVR_DBL_DIG=14 -D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64  -O2  -Wall 
In file included from perl.h:38,
                 from miniperlmain.c:40:
config.h:4425:12: error: operator '==' has no left operand
In file included from miniperlmain.c:40:
perl.h:713:14: error: operator '>=' has no left operand
... ...

In config.h, some macro is left blank, for example:

#define INTSIZE         /**/
#define LONGSIZE        /**/
#define SHORTSIZE       /**/
... much more ...

And I think it is the undefined macro result in the make error. I have no idea how to fix it. Why the macro is blank even if successfully configure?
Are there some guides to cross compile Perl?

Answer 1

I got the easiest way to cross compile Perl for arm-linux.Please refer to Cross-compiling perl. It’s a great work! It saved my life.

Just according to instructions that give, you can get what you want. You may encounter such error when ‘make’:

pp_sys.c:78: error: non-thread-local declaration of 'h_errno' follows thread-local declaration

Simply comment that line.
Enjoy it!