Re: Pango cross-compile failure (ARM)

On 12/14/2009 08:36 PM, William To wrote:
Dear Behdad,

I have found out that the compiler automatically aligns the data to
double word alignment,

Sure.  But does it do that to every member of a struct?  That doesn't make sense.

 and that means its screwing up the static asserts
because the assumed sizes are no longer valid. Have tried
adding __attribute__((packed)) to the affected structures, but still
there are places still not working. Is there any other way of working
around it?

Not that I know of. You may want to investigate why __attribute__((packed)) is not working.


Thanks very much and Best Regards

William To

On Wed, Dec 9, 2009 at 4:16 PM, Behdad Esfahbod <behdad behdad org
<mailto:behdad behdad org>> wrote:

    On 12/09/2009 01:32 AM, William To wrote:

        Dear All,

        First of all, I am new to the world of Pango and gtk-i18n, so
        excuse my
        lack of knowledge.


        This is a problem I am facing right now with pango-1.26.1 when
        cross-compiling to arm-hardfloat-linux-gnu:


        I tracked down to the source and it seems that a static
        assertion on the
        size of the USHORT/SHORT failed (too small or too large, I don't

    That's a deal breaker.  It's basically this struct:

    struct USHORT {
      char v[2];

    So if the size is not 2 bytes, you need to debug and see why your
    compiler is doing that.  And possibly find a solution.  I can't help
    much with that.


        has failed and the build is stuck here. It is possible to remove the
        ASSERT_SIZE in the header file, but then it won't build either.

        Here are my environmental variables:

        export COMPILER=$CC_PATH/arm-hardfloat-linux-gnu-gcc
        export CC=$CC_PATH/arm-hardfloat-linux-gnu-gcc
        export CPP=$CC_PATH/arm-hardfloat-linux-gnu-cpp
        export CXX=$CC_PATH/arm-hardfloat-linux-gnu-g++
        export AR=$CC_PATH/arm-hardfloat-linux-gnu-ar
        export RANLIB=$CC_PATH/arm-hardfloat-linux-gnu-ranlib
        export AS=$CC_PATH/arm-hardfloat-linux-gnu-as
        export LD=$CC_PATH/arm-hardfloat-linux-gnu-ld
        export NM=$CC_PATH/arm-hardfloat-linux-gnu-nm
        export PREFIX=/home/william/1234/libraries/prefix/webapps/
        export EXEC_PREFIX=/home/william/1234/libraries/mnt/webapps/
        export PKG_CONFIG_PATH=$PREFIX/lib/pkgconfig

        I use the ubuntu gcc 4.3.2 compiler to build and there is no such
        problem. Previous versions of pango compiles normally with the same
        cross compiler. I wonder has anybody had hit the same problem as me.

        Thanks very much and Best Regards

        William To

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