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Old 01-27-2005, 04:40 PM   #1
foo_bar_foo
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Registered: Jun 2004
Posts: 2,553

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gcc 3.4.1 and c implicit declaration


this must be simple but i can't figure it out

main has
#include <jack/jack.h>
then later
Code:
 while ((opt = getopt_long (argc, argv, options, long_options, NULL)) != -1)
    {
      switch (opt)
      {
      case 'h':
        print_help ();
        exit (0);
        break;
      case 'D':
        jack_set_server_dir (optarg);
        break;
jack/jack.h has
void jack_set_server_dir (const char *path);

the object compiles with the warning
main.c:112: warning: implicit declaration of function `jack_set_server_dir'

the the link fails with
ladccad-main.o(.text+0x20d): In function `main':
: undefined reference to `jack_set_server_dir'
collect2: ld returned 1 exit status
make[2]: *** [ladccad] Error 1

how do i fix ?
 
Old 01-27-2005, 04:49 PM   #2
deiussum
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Registered: Aug 2003
Location: Santa Clara, CA
Distribution: Slackware
Posts: 895

Rep: Reputation: 32
Not familiar with those functions, but I'd check to see if the declaration of jack_set_server_dir is within any sort of #ifdefs in jack/jack.h...

Also, when you are compiling do you link the appropriate libraries?
 
  


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