On many platforms, the 32-bit compiler infrastructure is in a set of
extra packages that aren't installed by default. Make sure that you can
successfully compile a 32-bit app using -m32 ("Hello, world" or
whatever.) The VirtualGL build system enables either 32-bit or 64-bit
based on the value of CMAKE_SIZE_OF_VOID_P, i.e. the number of bits in
the void* datatype. Thus, if the compiler is successfully accepting the
-m32 flag, then CMAKE_SIZE_OF_VOID_P should be 4 bytes, which will
trigger a 32-bit built in VirtualGL. If you are able to successfully
build a "Hello, world" app using -m32 but the VGL build system still
isn't working right, then it's an issue that I haven't encountered before.
On 4/29/13 6:44 PM, Harvey, David wrote:
> Hi All,
> I am trying to build a 32 bit version on 64-bit linux
> -- libjpeg-turbo has successfully built both /lib and /lib64
> I initiate the following successfully
> cmake -G "Unix makefiles" /opt/VirtualGL
> make
> make install
> and I get a lib64 build
> now I have tried several different methods for 32bit,
> export CFLAGS=-m32
> export CXXFLAGS=-m32
> export LDFLAGS=-m32
> cmake -G "Unix makefiles" /opt/VirtualGL
> make
> make install
> .... yikes... no 32 bit ... just a 64bit
> As far as I can tell I have all of the 32 bit required libraries -
> Have I missed something in the build process?
> Thanks
> Dave
>
>
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