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gnatmake broken on cross-compilation


Hello.

I'm working on porting GNAT to FreeBSD x86_64.

I've created a mostly working i386 -> x86_64 cross compiler.
In this case, mostly working means:

i386$ /cross/x86_64/bin/x86_64-pc-freebsd7.2-gcc -c main.adb
i386$ /cross/x86_64/bin/x86_64-pc-freebsd7.2-gnatbind main.ali
i386$ /cross/x86_64/bin/x86_64-pc-freebsd7.2-gnatlink -o main main.ali
i386$ file main
main: ELF 64-bit LSB executable, x86-64, version 1 (FreeBSD), for FreeBSD 7.2, dynamically linked (uses shared libs), FreeBSD-style, not stripped

x86_64$ ./main
Hello

I've tested with a few other basic programs and the compiler does
appear to work. However:

i386$ rm -f *.o *.ali main
i386$ /cross/x86_64/bin/x86_64-pc-freebsd7.2-gnatmake main
x86_64-pc-freebsd7.2-gcc -c main.adb
x86_64-pc-freebsd7.2-gnatmake: "main.ali" incompatible ALI file, please recompile
x86_64-pc-freebsd7.2-gnatmake: "main.adb" compilation error

gnatmake doesn't seem to be too happy. Anybody got any idea
why gnatmake might get upset over the ALI files?

i386$ /cross/x86_64/bin/x86_64-pc-freebsd7.2-gcc -v
Using built-in specs.
Target: x86_64-pc-freebsd7.2
Configured with: /root/gcc-4.4.0/configure --target=x86_64-pc-freebsd7.2
--prefix=/cross/x86_64 --enable-languages=c,ada --disable-nls
--with-system-zlib --with-libiconv-prefix=/usr/local
Thread model: posix
gcc version 4.4.0 (GCC) 

xw


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