/usr/lib/gcc-cross/powerpc64le-linux-gnu/4.9/include/ is in libgcc-4.9-dev-ppc64el-cross 4.9.3-13ubuntu2cross1.
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/usr/lib/gcc-cross/powerpc64le-linux-gnu/4.9/include-fixed/README
/usr/lib/gcc-cross/powerpc64le-linux-gnu/4.9/include-fixed/limits.h
/usr/lib/gcc-cross/powerpc64le-linux-gnu/4.9/include-fixed/linux/
/usr/lib/gcc-cross/powerpc64le-linux-gnu/4.9/include-fixed/linux/a.out.h
/usr/lib/gcc-cross/powerpc64le-linux-gnu/4.9/include-fixed/syslimits.h
/usr/lib/gcc-cross/powerpc64le-linux-gnu/4.9/include/altivec.h
/usr/lib/gcc-cross/powerpc64le-linux-gnu/4.9/include/backtrace-supported.h
/usr/lib/gcc-cross/powerpc64le-linux-gnu/4.9/include/backtrace.h
/usr/lib/gcc-cross/powerpc64le-linux-gnu/4.9/include/float.h
/usr/lib/gcc-cross/powerpc64le-linux-gnu/4.9/include/htmintrin.h
/usr/lib/gcc-cross/powerpc64le-linux-gnu/4.9/include/htmxlintrin.h
/usr/lib/gcc-cross/powerpc64le-linux-gnu/4.9/include/iso646.h
/usr/lib/gcc-cross/powerpc64le-linux-gnu/4.9/include/omp.h
/usr/lib/gcc-cross/powerpc64le-linux-gnu/4.9/include/paired.h
/usr/lib/gcc-cross/powerpc64le-linux-gnu/4.9/include/ppc-asm.h
/usr/lib/gcc-cross/powerpc64le-linux-gnu/4.9/include/ppu_intrinsics.h
/usr/lib/gcc-cross/powerpc64le-linux-gnu/4.9/include/si2vmx.h
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/usr/lib/gcc-cross/powerpc64le-linux-gnu/4.9/include/spu2vmx.h
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/usr/lib/gcc-cross/powerpc64le-linux-gnu/4.9/include/stdbool.h
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/usr/lib/gcc-cross/powerpc64le-linux-gnu/4.9/include/unwind.h
/usr/lib/gcc-cross/powerpc64le-linux-gnu/4.9/include/varargs.h
/usr/lib/gcc-cross/powerpc64le-linux-gnu/4.9/include/vec_types.h