[Chicken-hackers] Questions about cross-compiling Chicken

[Mario Domenech Goulart]

Hi,

The "Cross development" chapter in the manual
(http://wiki.call-cc.org/man/4/Cross%20development) suggests the
following command line to build Chicken for the target machine:

  make ARCH= \
       PREFIX=/usr \
       PLATFORM=linux \
       HOSTSYSTEM=arm-none-linux-gnueabi \
       DESTDIR=$HOME/target \
       TARGET_FEATURES="-no-feature x86 -feature arm" \
       install

Some questions:

1. Shouldn't ARCH be set with the target platform instead of set empty?  

If it is empty, I suppose apply-hack won't be applied, even if it is
supported on the target platform.  Is it right?  If so, wouldn't it be
better to provide a value for ARCH?


2. On TARGET_FEATURES="-no-feature x86 -feature arm"

If I understand the hardware-related feature correctly, it is set
according to `machine-type', which is determined (in chicken.h --
C_MACHINE_TYPE) based on constants defined by the toolchain header
files.  Since we provide HOSTSYSTEM, and C_COMPILER gets its value based
on that (i.e., the toolchain has been selected), is it necessary to
explicitly set TARGET_FEATURES?


Best wishes.
Mario
-- 
http://parenteses.org/mario