Hey, Thanks to Niels Nes, my compilation problems were solved. Just for others who may be reading: it was a bogus mel.yy.cc that I generated on an early compile run without bison and flex installed, and this didn't get removed by 'make clean' (something that will be fixed). Anyway, now I ran 'make check', but not very successfully: !ERROR: Testing FAILED SIGNIFICANTLY ! 3 out of 222 tests could not be executed 219 out of 222 tests produced SIGNIFICANTLY different output Basically typically the output I'd see was like this: 14:56:39> tests/suite_06/test_02.milS (<=60,60,60) ... 0.103s (Killed!) test_02.stable.out.FILTERED and test_02.test.out.FILTERED are equal. test_02.stable.err.FILTERED and test_02.test.err.FILTERED differ SIGNIFICANTLY! 14:56:40> tests/suite_08/test_01.milM (<=60,60,60) ... 0.126s (Killed!) test_01.stable.out.FILTERED and test_01.test.out.FILTERED are equal. test_01.stable.err.FILTERED and test_01.test.err.FILTERED differ SIGNIFICANTLY! 14:56:41> tests/suite_08/test_02.milS (<=60,60,60) ... 0.120s (Killed!) test_02.stable.out.FILTERED and test_02.test.out.FILTERED are equal. test_02.stable.err.FILTERED and test_02.test.err.FILTERED differ SIGNIFICANTLY! Looking at the HTML output, one set of unexpected output looks to be option information like this: # builtin opt config = ${prefix}/etc/MonetDB.conf # builtin opt gdk_arch = 32biti686-pc-linux-gnu # builtin opt gdk_version = 4.8.0 # builtin opt monet_pid = 30545 # builtin opt prefix = /home/faassen/tmp/local # builtin opt exec_prefix = ${prefix} # builtin opt gdk_dbname = tst # builtin opt gdk_dbfarm = ${prefix}/var/MonetDB More seriously, I get this: ! /home/faassen/working/monet/MonetDB-4.8.0/src/tools/Tests:: No such file or directory ! All: No such file or directory ! client.milC: No such file or directory ! client.stable.err: No such file or directory ! client.stable.out: No such file or directory ! client.stable.out.64bit: No such file or directory ! client.stable.out.64bit.monet_nostalgic.: No such file or directory ... etc Strangely enough, the directory mentioned does exist: faassen@moon:~$ cd /home/faassen/working/monet/MonetDB-4.8.0/src/tools/Tests faassen@moon:~/working/monet/MonetDB-4.8.0/src/tools/Tests$ pwd /home/faassen/working/monet/MonetDB-4.8.0/src/tools/Tests and those files, at least at a brief glance, do seem to exist too. Again I guess I'm missing something somewhere.. Regards, Martijn