Hi everyone. Just a couple words about myself. I started to dive when I was 11 I started to work with computers when I was 12 I've been using C for more than 15 years in my life....about 15 years ago I'm using Linux (unless customer says "no way") Now...the technical part. I have the following problems I'm currently using Ubuntu 10.04 LTS on my main computer I downloaded libdivecomputer and torvalds-subsurface-058b84c I managed to resolve all the dependencies, and managed to compile libdivecomputer without any errors Here's what I got sheitan@sheitan-TSH:/usr/local/lib$ ls -las total 1432 4 drwxr-xr-x 4 root root 4096 2012-05-13 11:51 . 4 drwxr-xr-x 10 root root 4096 2012-04-26 09:38 .. 872 -rw-r--r-- 1 root root 892588 2012-05-13 11:51 libdivecomputer.a 4 -rwxr-xr-x 1 root root 999 2012-05-13 11:51 libdivecomputer.la 0 lrwxrwxrwx 1 root root 24 2012-05-13 11:51 libdivecomputer.so -> libdivecomputer.so.0.0.0 0 lrwxrwxrwx 1 root root 24 2012-05-13 11:51 libdivecomputer.so.0 -> libdivecomputer.so.0.0.0 540 -rwxr-xr-x 1 root root 552324 2012-05-13 11:51 libdivecomputer.so.0.0.0 4 drwxr-xr-x 2 root root 4096 2012-05-13 11:51 pkgconfig 4 drwxrwsr-x 4 root staff 4096 2010-08-16 11:35 python2.6 So, it seems that libdivecomputer is OK I tried to compile subsurface....ooppss First, I had to fix the dependencies...OK But when I launch the "make" command, here's the result sheitan@sheitan-TSH:~/Documents/Diving/torvalds-subsurface-058b84c$ make gcc -Wall -Wno-pointer-sign -g -I/usr/include/libxml2 -pthread -D_REENTRANT -I/usr/include/gtk-2.0 -I/usr/lib/gtk-2.0/include -I/usr/include/atk-1.0 -I/usr/include/cairo -I/usr/include/pango-1.0 -I/usr/include/gio-unix-2.0/ -I/usr/include/glib-2.0 -I/usr/lib/glib-2.0/include -I/usr/include/pixman-1 -I/usr/include/freetype2 -I/usr/include/directfb -I/usr/include/libpng12 -I/usr/include/glib-2.0 -I/usr/lib/glib-2.0/include -I/usr/include/libxml2 -c profile.c In file included from profile.c:12: display.h:25: error: expected declaration specifiers or ‘...’ before ‘cairo_rectangle_int_t’ profile.c:1349: error: expected declaration specifiers or ‘...’ before ‘cairo_rectangle_int_t’ profile.c: In function ‘plot’: profile.c:1370: error: ‘drawing_area’ undeclared (first use in this function) profile.c:1370: error: (Each undeclared identifier is reported only once profile.c:1370: error: for each function it appears in.) make: *** [profile.o] Error 1 In case you wonder, "sudo make" gives the same results... It seems that the problem is about the function extern void plot(struct graphics_context *gc, cairo_rectangle_int_t *drawing_area, struct dive *dive); AFAIK, I can only see this function in display.h:extern void plot(struct graphics_context *gc, cairo_rectangle_int_t *drawing_area, struct dive *dive); and in sheitan@sheitan-TSH:~/Documents/Diving/torvalds-subsurface-058b84c$ grep 'plot(' *.c gtk-gui.c: plot(&gc, &drawing_area, dive); print.c: plot(&gc, &drawing_area, dive); profile.c:void plot(struct graphics_context *gc, cairo_rectangle_int_t *drawing_area, struct dive *dive) I'm puzzled, besides updating to the latest LTS version of Ubuntu (not really practical at this time), is it a problem on my side, or something else ? Thanks in advance, and best regards Henri