Hello, Following the directions at http://www.haskell.org/ghc/docs/6.2.1/html/building/sec-porting-ghc.html#UNR...... I have a Debian unstable system on i386 as the host machine and an IBM PowerPC system as the target. I have configured the files as specified in the docs. I am to the "make boot && make" phase in the ghc directory on the (Linux) host. All goes well until: ==fptools== make all -r; in /home/jgoerzen/no-backup/programs/ghc-6.2.1/ghc/rts ------------------------------------------------------------------------ ../../ghc/compiler/ghc-inplace -optc-O -optc-Wall -optc-W -optc-Wstrict-prototypes -optc-Wmissing-prototypes -optc-Wmissing-declarations -optc-Winline -optc-Waggregate-return -optc-Wbad-function-cast -optc-I../includes -optc-I. -optc-Iparallel -optc-DCOMPILING_RTS -optc-fomit-frame-pointer -H16m -O -O2 -static -c Adjustor.c -o Adjustor.o /tmp/ghc10917.s: Assembler messages: /tmp/ghc10917.s:54: Error: no such instruction: `dcbf 0,%eax' /tmp/ghc10917.s:55: Error: no such instruction: `sync' /tmp/ghc10917.s:56: Error: no such instruction: `icbi 0,%eax' /tmp/ghc10917.s:63: Error: no such instruction: `sync' /tmp/ghc10917.s:64: Error: no such instruction: `isync' make[1]: *** [Adjustor.o] Error 1 make: *** [all] Error 1 Why it's trying to use PowerPC assembler on an x86 host I don't know. (I assume that's what's going on here; but I don't really know.) What is the problem?