This is most likely user error but I am getting: /a/home/jplevyak/projects/llvm/Debug+Asserts/bin/tblgen: Record `Alias' does not have a field named `AdditionalMembers'! make[5]: *** [/a/home/jplevyak/projects/llvm/tools/clang/include/clang/AST/Debug+Asserts/Attrs.inc.tmp] Error 1 make[5]: Leaving directory `/a/home/jplevyak/projects/llvm/tools/clang/include/clang/AST' While building: http://llvm.org/svn/llvm-project/llvm/trunk jplevyak:llvm [414] % uname -a Linux jplevyak.homeip.net 2.6.34.6-47.fc13.x86_64 #1 SMP Fri Aug 27 08:56:01 UTC 2010 x86_64 x86_64 x86_64 GNU/Linux jplevyak:llvm [415] % gcc -v Using built-in specs. Target: x86_64-redhat-linux Configured with: ../configure --prefix=/usr --mandir=/usr/share/man --infodir=/usr/share/info --with-bugurl=http://bugzilla.redhat.com/bugzilla --enable-bootstrap --enable-shared --enable-threads=posix --enable-checking=release --with-system-zlib --enable-__cxa_atexit --disable-libunwind-exceptions --enable-gnu-unique-object --enable-languages=c,c++,objc,obj-c++,java,fortran,ada --enable-java-awt=gtk --disable-dssi --with-java-home=/usr/lib/jvm/java-1.5.0-gcj-1.5.0.0/jre --enable-libgcj-multifile --enable-java-maintainer-mode --with-ecj-jar=/usr/share/java/eclipse-ecj.jar --disable-libjava-multilib --with-ppl --with-cloog --with-tune=generic --with-arch_32=i686 --build=x86_64-redhat-linux Thread model: posix gcc version 4.4.4 20100630 (Red Hat 4.4.4-10) (GCC) Any help appreciated. john