hi, i'm trying to compile kernel 2.6.1 with the UML-patch that Jeff Dike supplied. Well, i get that error: gcc -Wl,-T,arch/um/uml.lds.s -static -Wl,--wrap,malloc -Wl,--wrap,free -Wl,--wrap,calloc \ -o linux arch/um/main.o vmlinux -L/usr/lib -lutil vmlinux(.text+0x1425c0): In function `sscanf': : multiple definition of `sscanf' arch/um/kernel/tt/unmap_fin.o(.text+0x33e20):__mmap64: first defined here vmlinux(.rodata+0xac80): multiple definition of `__mon_yday' arch/um/kernel/tt/unmap_fin.o(.rodata+0x10240):__mremap: first defined here vmlinux(.text+0x141520): In function `strpbrk': : multiple definition of `strpbrk' arch/um/kernel/tt/unmap_fin.o(.text+0x358d0):strpbrk: first defined here /usr/lib/gcc-lib/i686-pc-linux-gnu/3.2.3/../../../../i686-pc-linux-gnu/bin/ld: Warning: size of symbol `strpbrk' changed from 179 in arch/um/kernel/tt/unmap_fin.o to 64 in vmlinux /usr/lib/gcc-lib/i686-pc-linux-gnu/3.2.3/../../../../i686-pc-linux-gnu/bin/ld: BFD 2.14.90.0.6 20030820 assertion fail elf.c:3458 collect2: ld returned 1 exit status attached is the .config i used o compile the UML-kernel. just today, i recompiled my glibc to use NPTL. it's just my test-system, the system i will run UML on will not have NPTL installed, but is it a good idea to run UML on a NPTL-patched host-system in general? Thx Sven