File list of package libxdmcp-dev in bullseye of architecture armel
/usr/include/X11/Xdmcp.h /usr/lib/arm-linux-gnueabi/libXdmcp.a /usr/lib/arm-linux-gnueabi/libXdmcp.so /usr/lib/arm-linux-gnueabi/pkgconfig/xdmcp.pc /usr/share/doc/libxdmcp-dev/changelog.Debian.gz /usr/share/doc/libxdmcp-dev/changelog.gz /usr/share/doc/libxdmcp-dev/copyright /usr/share/doc/libxdmcp-dev/xdmcp.txt.gz