Re: htags -d not working?

[Rui Lopes]

Shigio Yamaguchi wrote:

> > > Htags says that there is not GTAGS in $TAGSDIR.
> > > Does GTAGS file exist there?
> > >
> > >
> > >      
> > Yes (and the other G* files too).
> >    
>
> Would you please show me the result by the following command line?
>
> $ echo $SRCDIR
> $ echo $TAGSDIR
> $ cd $SRCDIR
> $ gtags $TAGSDIR
> $ ls -l $TAGSDIR
> $ htags -d $TAGSDIR $TAGSDIR
>  
address@hidden ~/Sources/FreeBSD5 $ echo $SRCDIR
/usr/src/sys
address@hidden ~/Sources/FreeBSD5 $ echo $TAGSDIR
/home/rgl/Sources/FreeBSD5
address@hidden ~/Sources/FreeBSD5 $ cd $SRCDIR
address@hidden /usr/src/sys $ ls -l $TAGSDIR
total 0
address@hidden /usr/src/sys $ gtags $TAGSDIR
address@hidden /usr/src/sys $ ls -l $TAGSDIR
total 229568
-rw-r--r--  1 rgl  rgl     778240  1 Set 15:23 GPATH
-rw-r--r--  1 rgl  rgl  172032000  1 Set 15:27 GRTAGS
-rw-r--r--  1 rgl  rgl   34136064  1 Set 15:39 GSYMS
-rw-r--r--  1 rgl  rgl   27918336  1 Set 15:23 GTAGS
address@hidden /usr/src/sys $ htags -d $TAGSDIR $TAGSDIR
htags: GTAGS not found.


I did a ktrace and it showed this:
68822 htags    CALL  __getcwd(0x8080780,0x400)
68822 htags    RET   __getcwd 0
68822 htags    CALL  stat(0xbfbfc070,0x807ffc0)
68822 htags    NAMI  "/usr/src/sys/GTAGS"
68822 htags    RET   stat -1 errno 2 No such file or directory
68822 htags    CALL  stat(0xbfbfc070,0x807ffc0)
68822 htags    NAMI  "/usr/src/sys/obj/GTAGS"
68822 htags    RET   stat -1 errno 2 No such file or directory
68822 htags    CALL  stat(0xbfbfc070,0x807ffc0)
68822 htags    NAMI  "/usr/obj/usr/src/sys/GTAGS"
68822 htags    RET   stat -1 errno 2 No such file or directory
68822 htags    CALL  stat(0xbfbfc070,0x807ffc0)
68822 htags    NAMI  "/usr/src/GTAGS"
68822 htags    RET   stat -1 errno 2 No such file or directory
68822 htags    CALL  stat(0xbfbfc070,0x807ffc0)
68822 htags    NAMI  "/usr/src/obj/GTAGS"
68822 htags    RET   stat -1 errno 2 No such file or directory
68822 htags    CALL  stat(0xbfbfc070,0x807ffc0)
68822 htags    NAMI  "/usr/obj/usr/src/GTAGS"
68822 htags    RET   stat -1 errno 2 No such file or directory
68822 htags    CALL  stat(0xbfbfc070,0x807ffc0)
68822 htags    NAMI  "/usr/GTAGS"
68822 htags    RET   stat -1 errno 2 No such file or directory
68822 htags    CALL  stat(0xbfbfc070,0x807ffc0)
68822 htags    NAMI  "/usr/obj/GTAGS"
68822 htags    RET   stat -1 errno 2 No such file or directory
68822 htags    CALL  stat(0xbfbfc070,0x807ffc0)
68822 htags    NAMI  "/usr/obj/usr/GTAGS"
68822 htags    RET   stat -1 errno 2 No such file or directory
68822 htags    CALL  write(0x2,0xbfbfbd10,0x7)
68822 htags    GIO   fd 2 wrote 7 bytes
      "htags: "
68822 htags    RET   write 7
68822 htags    CALL  write(0x2,0xbfbfbd30,0x10)
68822 htags    GIO   fd 2 wrote 16 bytes
      "GTAGS not found."
68822 htags    RET   write 16/0x10



I didn't look much into the source code, but the getdbpath function is 
not getting the variable we set on the command line (and it seems it 
wasn't meant to receive it):

/*
* get root, cwd and dbpath.
*/
getdbpath(cwdpath, rootpath, dbpath, 0);
if (arg_dbpath[0])
   strlimcpy(dbpath, arg_dbpath, sizeof(dbpath));

since getdbpath cannot find GTAGS in current directory (and others, like 
you can see on the ktrace), it aborts the program here:
if (*root == 0)
   die_with_code(3, "GTAGS not found.");


Hope this helps.


Regards,
Rui Lopes