Can you please run the first line ("export ...") and the first two segments of the pipe manually and report what is printed, i.e.:
export LD_LIBRARY_PATH=$LD_LIBRARY_PATH:generated/objects/linux/lib
and
cat "data/image_directories/home-config-settings-printers-preview.rdef" | /home/haikuos/haiku/generated/cross-tools/bin/i586-pc-haiku-gcc -E -D__HAIKU__ -DHAIKU_DISTRO_COMPATIBILITY_DEFAULT -D__INTEL__ -DARCH_x86 -DHAIKU_TARGET_PLATFORM_HAIKU -iquote . -iquote generated/objects/common -iquote generated/objects/linux/x86/common -iquote generated/objects/haiku/x86/common -
