[Image-SIG] PIL cross-compilation

[Philippe Normand]

Hi!

I'm trying to compile PIL with LTIB (http://www.bitshrine.org) for an
ARM-based board. I get this error:

gcc -fno-strict-aliasing -DNDEBUG -g -O2 -Wall -Wstrict-prototypes -fPIC
-DHAVE_LIBJPEG -DHAVE_LIBZ -I/usr/include/freetype2 -IlibImaging
-I/usr/include -I/usr/local/include -I/usr/include/python2.4 -c
libImaging/Effects.c -o
i686-pc-linux-gnu/temp.linux-i686-2.4/libImaging/Effects.o
arm-none-linux-gnueabi-gcc
-B /home/phil/mx31/ltib-imx31ads-20071008/rootfs/usr/lib//
-idirafter /home/phil/mx31/ltib-imx31ads-20071008/rootfs/usr/include
-iwithprefix include -O2 -fsigned-char -msoft-float -fno-strict-aliasing
-DNDEBUG -g -O2 -Wall -Wstrict-prototypes -fPIC -DHAVE_LIBJPEG
-DHAVE_LIBZ -I/usr/include/freetype2 -IlibImaging -I/usr/include
-I/usr/local/include -I/usr/include/python2.4 -c libImaging/Effects.c -o
i686-pc-linux-gnu/temp.linux-i686-2.4/libImaging/Effects.o
In file included from /usr/include/linux/errno.h:4,
                 from /usr/include/bits/errno.h:25,
                 from /usr/include/errno.h:36,
                 from /usr/include/python2.4/Python.h:38,
                 from libImaging/ImPlatform.h:10,
                 from libImaging/Imaging.h:14,
                 from libImaging/Effects.c:19:
/usr/include/asm/errno.h:9:4: warning: #warning This machine appears to
be neither x86_64 nor i386.
In file included from /usr/include/bits/sigcontext.h:28,
                 from /usr/include/signal.h:333,
                 from /usr/include/python2.4/pyfpe.h:129,
                 from /usr/include/python2.4/Python.h:149,
                 from libImaging/ImPlatform.h:10,
                 from libImaging/Imaging.h:14,
                 from libImaging/Effects.c:19:
/usr/include/asm/sigcontext.h:9:4: warning: #warning This machine
appears to be neither x86_64 nor i386.
In file included from /usr/include/python2.4/pyfpe.h:129,
                 from /usr/include/python2.4/Python.h:149,
                 from libImaging/ImPlatform.h:10,
                 from libImaging/Imaging.h:14,
                 from libImaging/Effects.c:19:
/usr/include/signal.h:336: warning: 'struct sigcontext' declared inside
parameter list
/usr/include/signal.h:336: warning: its scope is only this definition or
declaration, which is probably not what you want
libImaging/Effects.c:210: warning: 'perlin_init' defined but not used
libImaging/Effects.c: In function 'perlin_turbulence':
/usr/include/bits/mathinline.h:530: error: impossible constraint in
'asm'
/usr/include/bits/mathinline.h:548: error: impossible constraint in
'asm'
/usr/include/bits/mathinline.h:530: error: impossible constraint in
'asm'
/usr/include/bits/mathinline.h:548: error: impossible constraint in
'asm'

Does anybody had a similar issue? Seems related to math library usage.
Trying PIL 1.1.6 here.

Philippe