On Thu, 26 Jan 2012 08:12:43 +0100, Sérgio Basto wrote: > /usr/bin/kmk_sed: file /builddir/build/BUILD/VirtualBox-4.1.8_OSE/src/VBox/Runtime/common/err/errmsg.sed line 31: Unmatched [ or [^ > kmk: *** [/builddir/build/BUILD/VirtualBox-4.1.8_OSE/obj/obj/Runtime/errmsgdata.h] Error 1 > kmk: *** Deleting file `/builddir/build/BUILD/VirtualBox-4.1.8_OSE/obj/obj/Runtime/errmsgdata.h' > kmk: *** Waiting for unfinished jobs.... > > build virtualbox with same kBuild but that was build with gcc 4.6 I > don't have this problem using kBuild-0.1.98-1.r1.fc17 works, using > kBuild-0.1.98-2.r1.fc17 I got this error, with kmk_sed. > Any clue is appreciated kmk_sed is most probably using some undefined C behavior which only fortunately worked with gcc-4.6. You should try compiling kmk_sed first with -O0 and then checking whether the specific function having this problem there is really valid ISO C. As an illustration gcore also broke with gcc-4.7 but it was a bug of gcore: http://sourceware.org/ml/binutils/2011-12/msg00298.html Regards, Jan -- devel mailing list devel@xxxxxxxxxxxxxxxxxxxxxxx https://admin.fedoraproject.org/mailman/listinfo/devel