Hi -
I am trying to cross compile OpenSG. I am developing on an x86_64 system
and am building OpenSG for i686. I have an x86_64 cross i686 compiler
and binutils, as well as C libs etc. [ Note: I'm missing lex or bison
for the 32-bit system; I'll create that asap]. I have built simple
programs and tested them on the host platform, and all seems well.
I configure OpenSG using the following
PATH=/path/to/cross-compiler/bin:$PATH \
./configure --prefix=/sw/i686 --build=x86_64-unknown-linux --host=i686-linux
[ Configure script does not recognize that I am using a cross-compiler.
According to the documentation in the script, it seems that the test is
to compile a simple program and see if it can be run. The test actually
succeeds in my case, as 32 bit executables can run on my system, so the
script concludes it is not using a cross compiler. ]
Next I build with
PATH=/path/to/cross-compiler/bin:$PATH \
make opt
The build fails with the following types of messages:
/home/dan/src/OpenSG/Source/Base/Base/OSGVector.cpp:0: sorry,
unimplemented: 64-bit mode not compiled in
This message comes from the compiler switch "-m64" being used, but the
cross-compiler doesn't like it because it has no 64 bit capabilities.
One other thing - configure creates folders under
Builds/x86_64-unknown-linux-gnu-g++, which is the same as when I
normally build OpenSG. I'd like it if the build dirs can coexist, and
I'll bet they can, but I'm not doing something right.
Has anyone else cross-compiled OpenSG in this way? Do you see what I've
done wrong?
Dan
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