I failed to compile that program as written below with those error messages : The conditions of compiling this program are not available any longer in the net so please help me compiling this program .
Error messages : ------------------------ root @ Homer /export/home/unix.d/programs.d/clang.d/GUI>cc plot_data.c "plot_data.c", line 15: warning: implicit function declaration: create_int_dialog_entry "plot_data.c", line 16: warning: implicit function declaration: create_float_dialog_entry "plot_data.c", line 20: warning: implicit function declaration: set_up_dialog "plot_data.c", line 24: warning: implicit function declaration: read_dialog_window Undefined first referenced symbol in file create_int_dialog_entry plot_data.o create_float_dialog_entry plot_data.o read_dialog_window plot_data.o set_up_dialog plot_data.o ld: fatal: Symbol referencing errors. No output written to a.out
In <9066f742-5021-4fe6-a2dd-9c408115b...@d37g2000yqa.googlegroups.com> happytoday <ehabaziz2...@gmail.com> writes:
> I failed to compile that program as written below with those error > messages : > The conditions of compiling this program are not available any longer > in the net so please help me compiling this program .
Your code is calling several functions that are not part of the standard C library. You must provide a library which contains those funcitons.
-- John Gordon A is for Amy, who fell down the stairs gor...@panix.com B is for Basil, assaulted by bears -- Edward Gorey, "The Gashlycrumb Tinies"
happytoday wrote: > I failed to compile that program as written below with those error > messages : > The conditions of compiling this program are not available any longer > in the net so please help me compiling this program .
You asked this in on c.l.c 2006, the same answers apply.
happytoday wrote: > I failed to compile that program as written below with those error > messages : > The conditions of compiling this program are not available any longer > in the net so please help me compiling this program .
> Error messages : > ------------------------ > root @ Homer /export/home/unix.d/programs.d/clang.d/GUI>cc plot_data.c > "plot_data.c", line 15: warning: implicit function declaration: > create_int_dialog_entry > "plot_data.c", line 16: warning: implicit function declaration: > create_float_dialog_entry > "plot_data.c", line 20: warning: implicit function declaration: > set_up_dialog > "plot_data.c", line 24: warning: implicit function declaration: > read_dialog_window > Undefined first referenced > symbol in file > create_int_dialog_entry plot_data.o > create_float_dialog_entry plot_data.o > read_dialog_window plot_data.o > set_up_dialog plot_data.o > ld: fatal: Symbol referencing errors. No output written to a.out
It would be better to write #include <X11/Xlib.h> #include <X11/Xutil.h>
then, probably something like the following, assuming your lib files are in /usr/openwin/lib (e.g. libXlib.a if it's the correct name for your library) cc -I/usr/openwin/share/include -L/usr/openwin/lib -lXlib -lXutil
happytoday wrote: > I failed to compile that program as written below with those error > messages : > The conditions of compiling this program are not available any longer > in the net so please help me compiling this program .
> Error messages : > ------------------------ > root @ Homer /export/home/unix.d/programs.d/clang.d/GUI>cc plot_data.c > "plot_data.c", line 15: warning: implicit function declaration: > create_int_dialog_entry > "plot_data.c", line 16: warning: implicit function declaration: > create_float_dialog_entry > "plot_data.c", line 20: warning: implicit function declaration: > set_up_dialog > "plot_data.c", line 24: warning: implicit function declaration: > read_dialog_window
Your REALLY should declare your functions! This will tell the compiler what sort of things should be passed to the functions as arguments and the type of the the value returned by the function.
K&R C, which allowed you to omit such things, is hopelessly obsolete.
> Undefined first referenced > symbol in file > create_int_dialog_entry plot_data.o > create_float_dialog_entry plot_data.o > read_dialog_window plot_data.o > set_up_dialog plot_data.o > ld: fatal: Symbol referencing errors. No output written to a.out
It's conventional, though not required, for a function like the above to return "success" or "failure". Good programmers test the return code and write diagnostic messages when a function returns a failure code.
> create_float_dialog_entry("x", &x);
Test the return code!
> /* Create window with name "Setup" and top-left corner at (0,0) */
> set_up_dialog("Setup", 0, 0);
Test the return code!
> /* Display the window and read the results */
> read_dialog_window();
> /* Print out the new values */
> printf("n = %d, x = %f\n", n, x); > return 0; > }
Dirty little hacks like this have a nasty habit of turning up as part of something important and embarrassing the authors!
> happytoday wrote: > > I failed to compile that program as written below with those error > > messages : > > The conditions of compiling this program are not available any longer > > in the net so please help me compiling this program .
> > Error messages : > > ------------------------ > > root @ Homer /export/home/unix.d/programs.d/clang.d/GUI>cc plot_data.c > > "plot_data.c", line 15: warning: implicit function declaration: > > create_int_dialog_entry > > "plot_data.c", line 16: warning: implicit function declaration: > > create_float_dialog_entry > > "plot_data.c", line 20: warning: implicit function declaration: > > set_up_dialog > > "plot_data.c", line 24: warning: implicit function declaration: > > read_dialog_window > > Undefined first referenced > > symbol in file > > create_int_dialog_entry plot_data.o > > create_float_dialog_entry plot_data.o > > read_dialog_window plot_data.o > > set_up_dialog plot_data.o > > ld: fatal: Symbol referencing errors. No output written to a.out
> It would be better to write > #include <X11/Xlib.h> > #include <X11/Xutil.h>
> then, probably something like the following, assuming your > lib files are in /usr/openwin/lib (e.g. libXlib.a if it's > the correct name for your library) > cc -I/usr/openwin/share/include -L/usr/openwin/lib -lXlib -lXutil
root @ Homer /clang>cc -I/usr/openwin/share/include -L/usr/openwin/lib -lXlib -lXutil plot_data.c "plot_data.c", line 15: warning: implicit function declaration: create_int_dialog_entry "plot_data.c", line 16: warning: implicit function declaration: create_float_dialog_entry "plot_data.c", line 20: warning: implicit function declaration: set_up_dialog "plot_data.c", line 24: warning: implicit function declaration: read_dialog_window ld: fatal: library -lXlib: not found ld: fatal: library -lXutil: not found ld: fatal: File processing errors. No output written to a.out
> On Feb 9, 12:30 am, toucan <tou...@zoo.invalid> wrote:
> > happytoday wrote: > > > I failed to compile that program as written below with those error > > > messages : > > > The conditions of compiling this program are not available any longer > > > in the net so please help me compiling this program .
> > > Error messages : > > > ------------------------ > > > root @ Homer /export/home/unix.d/programs.d/clang.d/GUI>cc plot_data.c > > > "plot_data.c", line 15: warning: implicit function declaration: > > > create_int_dialog_entry > > > "plot_data.c", line 16: warning: implicit function declaration: > > > create_float_dialog_entry > > > "plot_data.c", line 20: warning: implicit function declaration: > > > set_up_dialog > > > "plot_data.c", line 24: warning: implicit function declaration: > > > read_dialog_window > > > Undefined first referenced > > > symbol in file > > > create_int_dialog_entry plot_data.o > > > create_float_dialog_entry plot_data.o > > > read_dialog_window plot_data.o > > > set_up_dialog plot_data.o > > > ld: fatal: Symbol referencing errors. No output written to a.out
> > It would be better to write > > #include <X11/Xlib.h> > > #include <X11/Xutil.h>
> > then, probably something like the following, assuming your > > lib files are in /usr/openwin/lib (e.g. libXlib.a if it's > > the correct name for your library) > > cc -I/usr/openwin/share/include -L/usr/openwin/lib -lXlib -lXutil
Are you sure you want "-I/usr/openwin/share/include" instead of "-L/usr/openwin/share/include" ?
Where are libX11.aand libXutil.a on your system?
In my experience, Sun Unix platforms put them in "/usr/openwin", while most other -nix platforms put them (or at least links to them) in /usr/lib or /usr/X11R6.
You need to find where thosw libraries are on your system, and set the "-L" options appropriately to point to them.
> "plot_data.c", line 15: warning: implicit function declaration: > create_int_dialog_entry
Line 15 of your source code apparently references a function named "create_int_directory_entry" without you having provided a prototype for that function.
> "plot_data.c", line 16: warning: implicit function declaration: > create_float_dialog_entry > "plot_data.c", line 20: warning: implicit function declaration: > set_up_dialog > "plot_data.c", line 24: warning: implicit function declaration: > read_dialog_window
Ditto for these warnings.
> ld: fatal: library -lXlib: not found > ld: fatal: library -lXutil: not found
libXlib.a and libXutil.a could not be found in the paths you provided.
> ld: fatal: File processing errors. No output written to a.out- Hide quoted text -
happytoday wrote: > The problem that I did know well what files concerning these functions > so I compiled with the below errors : > root @ Homer /clang>head plot_data.c > #include <X11/Xlib.h> > #include <X11/Xutil.h> > #include <stdio.h> > #include <math.h>
> int main() > { > /* Define default values: */
> int n = 0; > root @ Homer /clang>
> root @ Homer /clang>cc -I/usr/openwin/share/include -L/usr/openwin/lib > -lXlib -lXutil plot_data.c > "plot_data.c", line 15: warning: implicit function declaration: > create_int_dialog_entry > "plot_data.c", line 16: warning: implicit function declaration: > create_float_dialog_entry > "plot_data.c", line 20: warning: implicit function declaration: > set_up_dialog > "plot_data.c", line 24: warning: implicit function declaration: > read_dialog_window > ld: fatal: library -lXlib: not found > ld: fatal: library -lXutil: not found > ld: fatal: File processing errors. No output written to a.out
It looks like something is wrong : did you check the "implicitly declared" function are really in those header files ? Did you check the lib file are really in this directory ?
> On Feb 8, 3:10 pm, happytoday <ehabaziz2...@gmail.com> wrote:
> > On Feb 9, 12:30 am, toucan <tou...@zoo.invalid> wrote:
> > > happytoday wrote: > > > > I failed to compile that program as written below with those error > > > > messages : > > > > The conditions of compiling this program are not available any longer > > > > in the net so please help me compiling this program .
> > > > Error messages : > > > > ------------------------ > > > > root @ Homer /export/home/unix.d/programs.d/clang.d/GUI>cc plot_data.c > > > > "plot_data.c", line 15: warning: implicit function declaration: > > > > create_int_dialog_entry > > > > "plot_data.c", line 16: warning: implicit function declaration: > > > > create_float_dialog_entry > > > > "plot_data.c", line 20: warning: implicit function declaration: > > > > set_up_dialog > > > > "plot_data.c", line 24: warning: implicit function declaration: > > > > read_dialog_window > > > > Undefined first referenced > > > > symbol in file > > > > create_int_dialog_entry plot_data.o > > > > create_float_dialog_entry plot_data.o > > > > read_dialog_window plot_data.o > > > > set_up_dialog plot_data.o > > > > ld: fatal: Symbol referencing errors. No output written to a.out
> > > It would be better to write > > > #include <X11/Xlib.h> > > > #include <X11/Xutil.h>
> > > then, probably something like the following, assuming your > > > lib files are in /usr/openwin/lib (e.g. libXlib.a if it's > > > the correct name for your library) > > > cc -I/usr/openwin/share/include -L/usr/openwin/lib -lXlib -lXutil
> Are you sure you want "-I/usr/openwin/share/include" instead of > "-L/usr/openwin/share/include" ?
> Where are libX11.aand libXutil.a on your system?
> In my experience, Sun Unix platforms put them in "/usr/openwin", > while most other -nix platforms put them (or at least links to them) > in /usr/lib or /usr/X11R6.
> You need to find where thosw libraries are on your system, and > set the "-L" options appropriately to point to them.
> > "plot_data.c", line 15: warning: implicit function declaration: > > create_int_dialog_entry
> Line 15 of your source code apparently references a function > named "create_int_directory_entry" without you having provided > a prototype for that function.
> > "plot_data.c", line 16: warning: implicit function declaration: > > create_float_dialog_entry > > "plot_data.c", line 20: warning: implicit function declaration: > > set_up_dialog > > "plot_data.c", line 24: warning: implicit function declaration: > > read_dialog_window
> Ditto for these warnings.
> > ld: fatal: library -lXlib: not found > > ld: fatal: library -lXutil: not found
> libXlib.a and libXutil.a could not be found in the paths you provided.
> > ld: fatal: File processing errors. No output written to a.out- Hide quoted text -
> On Feb 8, 3:10 pm, happytoday <ehabaziz2...@gmail.com> wrote:
> > On Feb 9, 12:30 am, toucan <tou...@zoo.invalid> wrote:
> > > happytoday wrote: > > > > I failed to compile that program as written below with those error > > > > messages : > > > > The conditions of compiling this program are not available any longer > > > > in the net so please help me compiling this program .
> > > > Error messages : > > > > ------------------------ > > > > root @ Homer /export/home/unix.d/programs.d/clang.d/GUI>cc plot_data.c > > > > "plot_data.c", line 15: warning: implicit function declaration: > > > > create_int_dialog_entry > > > > "plot_data.c", line 16: warning: implicit function declaration: > > > > create_float_dialog_entry > > > > "plot_data.c", line 20: warning: implicit function declaration: > > > > set_up_dialog > > > > "plot_data.c", line 24: warning: implicit function declaration: > > > > read_dialog_window > > > > Undefined first referenced > > > > symbol in file > > > > create_int_dialog_entry plot_data.o > > > > create_float_dialog_entry plot_data.o > > > > read_dialog_window plot_data.o > > > > set_up_dialog plot_data.o > > > > ld: fatal: Symbol referencing errors. No output written to a.out
> > > It would be better to write > > > #include <X11/Xlib.h> > > > #include <X11/Xutil.h>
> > > then, probably something like the following, assuming your > > > lib files are in /usr/openwin/lib (e.g. libXlib.a if it's > > > the correct name for your library) > > > cc -I/usr/openwin/share/include -L/usr/openwin/lib -lXlib -lXutil
> Are you sure you want "-I/usr/openwin/share/include" instead of > "-L/usr/openwin/share/include" ?
> Where are libX11.aand libXutil.a on your system?
> In my experience, Sun Unix platforms put them in "/usr/openwin", > while most other -nix platforms put them (or at least links to them) > in /usr/lib or /usr/X11R6.
> You need to find where thosw libraries are on your system, and > set the "-L" options appropriately to point to them.
> > "plot_data.c", line 15: warning: implicit function declaration: > > create_int_dialog_entry
> Line 15 of your source code apparently references a function > named "create_int_directory_entry" without you having provided > a prototype for that function.
> > "plot_data.c", line 16: warning: implicit function declaration: > > create_float_dialog_entry > > "plot_data.c", line 20: warning: implicit function declaration: > > set_up_dialog > > "plot_data.c", line 24: warning: implicit function declaration: > > read_dialog_window
> Ditto for these warnings.
> > ld: fatal: library -lXlib: not found > > ld: fatal: library -lXutil: not found
> libXlib.a and libXutil.a could not be found in the paths you provided.
> > ld: fatal: File processing errors. No output written to a.out- Hide quoted text -
Or better yet, don't use that tutorial. Apart from using "void main" it lists strncpy as one of the most useful string functions (it's use is highly specialised), it keeps having a space after the < of #include directives, it keeps saying statement blocks are required where you can alternatively use a single statement (although sometimes it does not bother with the block it says you need when initially describing the construct)...
That's what a cursory skim through shows. -- Flash Gordon
