Laurent, I tried to compile s4 with skalibs in Unbuntu 10.04 context and it failed for s4. One remark, before explaining what failed. Despite setting, with slashpackage convention explainations, my prefix is in 'conf-compile/conf-sp_root', s4 searches in 'compile/export/conf-sp_root'. Is it normal different setting from in skalibs?? But it failed afterwards. Here it is last logs /////////////////////////////////////// make[1]: Leaving directory `/home/g178508/Documents/forge/test_ska/package/admin/s4-0.10/compile/libftrig' Subsystem libftrig done. Making subsystem pipe-tools... exec ./gen-EXPORT > EXPORT- ./gen-Makefile > Makefile.real && make -f Makefile.real && : > .done make[1]: Entering directory `/home/g178508/Documents/forge/test_ska/package/admin/s4-0.10/compile/pipe-tools' exec ./compile s4-ftrig-cleanfifodir.c exec ./load s4-ftrig-cleanfifodir -lftrigw -lstddjb exec ./compile s4-ftrig-listen.c s4-ftrig-listen.c:18:22: error: execline.h: No such file or directory s4-ftrig-listen.c: In function 'main': s4-ftrig-listen.c:66: warning: implicit declaration of function 'el_semicolon' make[1]: *** [s4-ftrig-listen.o] Error 1 make[1]: Leaving directory `/home/g178508/Documents/forge/test_ska/package/admin/s4-0.10/compile/pipe-tools' make: *** [.done] Error 2 /////////////////////////////////////// How can I fix this problem?? Thank you all. Vincent