How to Cross Compile a Static Library in Xen Mini-OS

Xen Mini-OS is a minimal operating system designed to running on top of Xen hypervisor. To keep the kernel small, there are only few libraries shipped with it: newlib for C language library, Xen related library such as libxc to communicate with Xen hypervisor, and lwip for basic networking. To port LibVMI to Mini-OS, more libraries are needed. These include JSON libraries to parse Rekall profiles, and library with some utility data structures such as GLib.

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Build Xen From Source Code with Ubuntu 18.04: need to update `qemu-xen`

Problem: When compiling Xen from source with Ubuntu 18.04, yields error: static declaration of ‘memfd_create’ follows non-static declaration: $ cd xen-4.10.0 $ ./configure --enable-systemd --enable-stubdom $ make -C xen menuconfig $ make dist-xen $ make dist-tools ...... (looks good) CC util/memfd.o /xen-4.10.0/tools/qemu-xen/util/memfd.c:40:12: error: static declaration of ‘memfd_create’ follows non-static declaration static int memfd_create(const char *name, unsigned int flags) ^~~~~~~~~~~~ In file included from /usr/include/x86_64-linux-gnu/bits/mman-linux.h:115:0, from /usr/include/x86_64-linux-gnu/bits/mman.h:45, from /usr/include/x86_64-linux-gnu/sys/mman.h:41, from /xen-4.10.0/tools/qemu-xen/include/sysemu/os-posix.h:29, from /xen-4.