Hello, I want to compile just the seL4 kernel (5.2.0) and tried it by invoking: alex@max:~/sel4.git$ ARCH=x86 PLAT=pc99 SEL4_ARCH=ia32 make but the compile fails (attached below). Do I need to setup/configure something beforehand ? It seems some defines are not set. The host is a 64bit Ubuntu 16.04 LTS. Thanks, Alex. alex@max:~/sel4.git$ git log commit 3695232f9603af60d56f97072082d90f30e98b0e Author: Kent McLeod Date: Wed May 31 17:21:29 2017 +1000 update VERSION file to 5.2.0 alex@max:~/sel4.git$ ARCH=x86 PLAT=pc99 SEL4_ARCH=ia32 make [MKDIR] arch/object [PBF_GEN] arch/object/structures.pbf [PBF_GEN] plat/32/plat_mode/machine/hardware.pbf [PBF_GEN] 32/mode/api/shared_types.pbf [BF_GEN] arch/object/structures_gen.h [BF_GEN] plat/32/plat_mode/machine/hardware_gen.h [BF_GEN] 32/mode/api/shared_types_gen.h [CPP] src/arch/x86/32/machine_asm.s_pp [AS] src/arch/x86/32/machine_asm.o [CPP] src/arch/x86/32/traps.s_pp [AS] src/arch/x86/32/traps.o [CPP] src/arch/x86/32/head.s_pp [AS] src/arch/x86/32/head.o [CPP] src/arch/x86/multiboot.s_pp [AS] src/arch/x86/multiboot.o [TOUCH] sources_list_updated [CPP_GEN] kernel_all.c [CPP] kernel_all.c_pp In file included from ./include/arch/x86/arch/fastpath/fastpath.h:14:0, from src/arch/x86/32/c_traps.c:15: ./include/arch/x86/arch/32/mode/fastpath/fastpath.h:137:2: error: #error "Invalid method to set IPCBUF/TLS" #error "Invalid method to set IPCBUF/TLS" ^ ./include/arch/x86/arch/32/mode/fastpath/fastpath.h:168:2: error: #error "Invalid method to set IPCBUF/TLS" #error "Invalid method to set IPCBUF/TLS" ^ src/arch/x86/32/c_traps.c:198:2: error: #error "Invalid method to set IPCBUF/TLS" #error "Invalid method to set IPCBUF/TLS" ^ src/arch/x86/32/c_traps.c:238:2: error: #error "Invalid method to set IPCBUF/TLS" #error "Invalid method to set IPCBUF/TLS" ^ Makefile:729: recipe for target 'kernel_all.c_pp' failed make: *** [kernel_all.c_pp] Error 1 rm plat/32/plat_mode/machine/hardware_gen.h 32/mode/api/shared_types_gen.h src/arch/x86/32/machine_asm.s_pp src/arch/x86/32/traps.s_pp src/arch/x86/multiboot.s_pp arch/object/structures_gen.h src/arch/x86/32/head.s_pp -- Alexander Boettcher Genode Labs http://www.genode-labs.com - http://www.genode.org Genode Labs GmbH - Amtsgericht Dresden - HRB 28424 - Sitz Dresden Geschäftsführer: Dr.-Ing. Norman Feske, Christian Helmuth