So now flex is failing? My Norwegian is not good enough to understand [ 2%] Generating csound_prelex.c C:\MinGW\msys\1.0\bin\flex.exe -B C:/Source/csound/Engine/csound_pre.lex > C:/Source/csound-build/csound_prelex.c Prosessen f? ikke tilgang til filen fordi den brukes av en annen prosess. CMakeFiles\csound64.dir\build.make:69: recipe for target 'csound_prelex.c' failed mingw32-make[2]: *** [csound_prelex.c] Error 1 Google translate suggests that you have someone else using csound_prelex.c Are you building with -j option? easier to debug with one thread ==John ff ------------------------------------------------------------------------------ HPCC Systems Open Source Big Data Platform from LexisNexis Risk Solutions Find What Matters Most in Your Big Data with HPCC Systems Open Source. Fast. Scalable. Simple. Ideal for Dirty Data. Leverages Graph Analysis for Fast Processing & Easy Data Exploration http://p.sf.net/sfu/hpccsystems _______________________________________________ Csound-devel mailing list Csound-devel@lists.sourceforge.net