lcd4linux-devel — lcd4linux development team

Re: [Lcd4linux-devel] unable to compile CVS version

[Xavier V. <xav...@fr...>]

Hello Alex and Barry !

Barry : In fact, the mysql plugin is work in progress and Michael didn't
modify the configuration stuff to make it work, so if you have the mysql
headers installed it will fail. Just do as Alex says for the moment

Alex : 
> I never needed those sensors, so i never compiled it in the kernel. So i
> get messages like:
> [i2c_sensors] Impossible to open /sys/bus/i2c/devices/! Is /sys mounted?
> [i2c_sensors] Impossible to open /proc/sys/dev/sensors/! Is i2c_proc
> loaded ?
> [i2c_sensors] No i2c sensors found via the i2c interface !
> [i2c_sensors] Try to specify the path to the sensors !
Yes. I think I've been a little too verbose with this plugin, don't care
about these warnings.
The claim is that by now all 'plugins' and drivers are hard linked into
the lcd4linux executable, but there's no configure switch to choose
which ones to compile.
In the future (after 0.10.0), we'll try to make plugins dynamicaly
loaded, and configure switches to select plugins just as it's possible
for drivers, but wait a little.

Michael : Maybe you should think about this configure switch for 0.10.0
? I'll try to do it myself if I can.

Bye !
----
Xavier Vello <xav...@fr...>

Re: [Lcd4linux-devel] unable to compile CVS version

[Alex L. <al...@no...>]

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Hi,

I bypassed it by commenting out the line

AC_CHECK_HEADERS(mysql/mysql.h)

in file 'configure' since i don't find any --no-mysql or similar options
available with ./configure --help.

I never needed those sensors, so i never compiled it in the kernel. So i
get messages like:

[i2c_sensors] Impossible to open /sys/bus/i2c/devices/! Is /sys mounted?
[i2c_sensors] Impossible to open /proc/sys/dev/sensors/! Is i2c_proc
loaded ?
[i2c_sensors] No i2c sensors found via the i2c interface !
[i2c_sensors] Try to specify the path to the sensors !

when i'm starting lcd4linux. HOwever, i don't think it matters much.

Best Regards,

~Alex


Barry Gould said the following on 4/4/2004 12:08 AM:
| Hi, I just checked out the CVS, as I'm interested in trying the new
| support for more than one network graph, but I'm unable to get it to
| compile.
|
| On RedHat 7.3 and 7.0, After running
| ./configure  --with-drivers=Curses,CrystalFontz
| make
|
| I get:
| gcc  -D_GNU_SOURCE -Wall -g -O2  -o lcd4linux  lcd4linux.o cfg.o debug.o
| drv.o evaluator.o hash.o layout.o lock.o pid.o timer.o thread.o udelay.o
| qprintf.o widget.o widget_text.o widget_bar.o widget_icon.o plugin.o
| plugin_math.o plugin_string.o plugin_cfg.o plugin_uname.o
| plugin_loadavg.o plugin_proc_stat.o plugin_cpuinfo.o plugin_meminfo.o
| plugin_netdev.o plugin_ppp.o plugin_dvb.o plugin_apm.o
| plugin_i2c_sensors.o plugin_imon.o plugin_exec.o plugin_xmms.o
| plugin_seti.o drv_Crystalfontz.o drv_generic_text.o
| drv_generic_serial.o  -lncurses -lm
| plugin.o: In function `plugin_init':
| /tmp/lcd4linux/plugin.c:215: undefined reference to `plugin_init_mysql'
| plugin.o: In function `plugin_exit':
| /tmp/lcd4linux/plugin.c:238: undefined reference to `plugin_exit_mysql'
| collect2: ld returned 1 exit status
| make: *** [lcd4linux] Error 1
|
|
| How can I get this compiled? Is there an option to disable the mysql
| plugin?
|
| Thanks,
| Barry Gould
|
|
|
| -------------------------------------------------------
| This SF.Net email is sponsored by: IBM Linux Tutorials
| Free Linux tutorial presented by Daniel Robbins, President and CEO of
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[Lcd4linux-devel] unable to compile CVS version

[Barry G. <mai...@pe...>]

Hi, I just checked out the CVS, as I'm interested in trying the new support 
for more than one network graph, but I'm unable to get it to compile.

On RedHat 7.3 and 7.0, After running
./configure  --with-drivers=Curses,CrystalFontz
make

I get:
gcc  -D_GNU_SOURCE -Wall -g -O2  -o lcd4linux  lcd4linux.o cfg.o debug.o 
drv.o evaluator.o hash.o layout.o lock.o pid.o timer.o thread.o udelay.o 
qprintf.o widget.o widget_text.o widget_bar.o widget_icon.o plugin.o 
plugin_math.o plugin_string.o plugin_cfg.o plugin_uname.o plugin_loadavg.o 
plugin_proc_stat.o plugin_cpuinfo.o plugin_meminfo.o plugin_netdev.o 
plugin_ppp.o plugin_dvb.o plugin_apm.o plugin_i2c_sensors.o plugin_imon.o 
plugin_exec.o plugin_xmms.o plugin_seti.o drv_Crystalfontz.o 
drv_generic_text.o drv_generic_serial.o  -lncurses -lm
plugin.o: In function `plugin_init':
/tmp/lcd4linux/plugin.c:215: undefined reference to `plugin_init_mysql'
plugin.o: In function `plugin_exit':
/tmp/lcd4linux/plugin.c:238: undefined reference to `plugin_exit_mysql'
collect2: ld returned 1 exit status
make: *** [lcd4linux] Error 1


How can I get this compiled? Is there an option to disable the mysql plugin?

Thanks,
Barry Gould

Re: [Lcd4linux-devel] Kernel 2.6 /proc/stat

[Xavier V. <xav...@fr...>]

Hi all !

> >> Recently, I've installed lcd4linux version 0.9.11 on my Gentoo
> >> Linux | system. I setup the config files and everything seems to
> >> work. However, | the Hard Disk IO stats doesn't seems to move and i
> >> checked it with | "lcd4linux -F -vvv" and it seems that the
> >> /proc/stat no longer contains | the information it needs to get the
> >> disk_io and disk_rblk. 
> > After looking over vmstat for a bit, it seems they've calculated the 
> > sums of the disk stats from /proc/diskstat. Maybe it's possible to
> > read from that? (Just wondering if it's possible to have this work
> > with Kernel 2.6.x)
> Xavier, do you have time to take a look at this?
Err... I may find time for this, but I don't promise you anything !
This WE I'll have to study as next week I have exams :/ But then I'm in
holidays for 2 weeks :)

BTW: this WE France will switch to 'summer time', we'll be at GMT+2, so
please set cron to send the patches at 16h from Austria :)

Bye !

Re: [Lcd4linux-devel] Kernel 2.6 /proc/stat

[Alex L. <al...@no...>]

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Hi,

Thanx for the reply Michael. Well, while i was waiting for this reply, I
was looking at the procps's source in "vmstat.c" and "proc/sysinfo.c".
It seems there isn't any centralized value for read/write io anymore and
a sum has to be calculated from IDE devices (type 3) and SCSI devices
(type 8) in the file. I guess umm... I'll wait for some generous soul to
release a fix for this. Hehe.. and it's really nice to know someone's
looking into this matter as well. =)

Thanx lots,

~Alex

| Hi Alex,
|
|>> Recently, I've installed lcd4linux version 0.9.11 on my Gentoo
|>> Linux | system. I setup the config files and everything seems to
|>> work. However, | the Hard Disk IO stats doesn't seems to move and i
|>> checked it with | "lcd4linux -F -vvv" and it seems that the
|>> /proc/stat no longer contains | the information it needs to get the
|>> disk_io and disk_rblk.
|
|> After looking over vmstat for a bit, it seems they've calculated the
|> sums of the disk stats from /proc/diskstat. Maybe it's possible to
|> read from that? (Just wondering if it's possible to have this work
|> with Kernel 2.6.x)
|
| Hmmm, this is bad news.
|
| I will look into this as soon as my kernel 2.6 is up and running (which
| may take several weeks, because there are som mission-critical things
| not working with 2.6)
|
| Our main kernel we're developing with is still 2.4.
|
| Xavier, do you have time to take a look at this?
|
| bye, Michael
|
| --
| Michael Reinelt                                   Tel: +43 676 3079941
| Geisslergasse 4                                   Fax: +43 316  692343
| A-8045 Graz, Austria                          e-mail: re...@eu...
|
|
| -------------------------------------------------------
| This SF.Net email is sponsored by: IBM Linux Tutorials
| Free Linux tutorial presented by Daniel Robbins, President and CEO of
| GenToo technologies. Learn everything from fundamentals to system
| administration.http://ads.osdn.com/?ad_id=1470&alloc_id=3638&op=click
| _______________________________________________
| Lcd4linux-devel mailing list
| Lcd...@li...
| https://lists.sourceforge.net/lists/listinfo/lcd4linux-devel

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Re: [Lcd4linux-devel] Kernel 2.6 /proc/stat

[Michael R. <re...@eu...>]

Hi Alex,

>> Recently, I've installed lcd4linux version 0.9.11 on my Gentoo
>> Linux | system. I setup the config files and everything seems to
>> work. However, | the Hard Disk IO stats doesn't seems to move and i
>> checked it with | "lcd4linux -F -vvv" and it seems that the
>> /proc/stat no longer contains | the information it needs to get the
>> disk_io and disk_rblk.

> After looking over vmstat for a bit, it seems they've calculated the 
> sums of the disk stats from /proc/diskstat. Maybe it's possible to
> read from that? (Just wondering if it's possible to have this work
> with Kernel 2.6.x)

Hmmm, this is bad news.

I will look into this as soon as my kernel 2.6 is up and running (which 
may take several weeks, because there are som mission-critical things 
not working with 2.6)

Our main kernel we're developing with is still 2.4.

Xavier, do you have time to take a look at this?

bye, Michael

-- 
Michael Reinelt                                   Tel: +43 676 3079941
Geisslergasse 4                                   Fax: +43 316  692343
A-8045 Graz, Austria                          e-mail: re...@eu...

Re: [Lcd4linux-devel] MySQL plugin news

[Michael R. <re...@eu...>]

Hi Javi,

> All works fine with some minor changes in sample.conf. See patch.txt
Checked in, thanks.

>>The most imnportant thing would be a better autoconf makro which does 
>>not only check for mysql.h, but for libmyslq, too, and add this library 
>>to the CFLAGS or LFLAGS.

> I don't know about using Automake and Autoconf, but googleing I've found that,hope that it helps:

This is not very clean. The solution I'd prefer would be completely 
transparent to the user, which means it would sook at several places for 
the header and library, if found, modify CFLAGS and LFLAGS accordingly, 
and define a symbol HAVE_MYSQL or so. If it doesn't find either header 
or lib, do nothing but undefine HAVE_MYSQL.

I posted a question to a MySQL Newsgroup, maybe someone has already 
worked this one out.

I found a sample solution within the source of "motion", but this 
doesn't look very clean to me, too.


bye, Michael

-- 
Michael Reinelt                                   Tel: +43 676 3079941
Geisslergasse 4                                   Fax: +43 316  692343
A-8045 Graz, Austria                          e-mail: re...@eu...

Re: [Lcd4linux-devel] MySQL plugin news

[Javi <ja...@gs...>]

Hi Michael, hi all.

> Fine! Already checked in into CVS, but with some modifications:
>...
> - I prepared some SQL examples in the lcd4linux.conf.sample
> I hope this works, because I cannot test it...

All works fine with some minor changes in sample.conf. See patch.txt

> The most imnportant thing would be a better autoconf makro which does 
> not only check for mysql.h, but for libmyslq, too, and add this library 
> to the CFLAGS or LFLAGS.

I don't know about using Automake and Autoconf, but googleing I've found that,hope that it helps:

(http://www.murrayc.com/learning/linux/using_libraries/using_libraries.shtml)
Libraries with no macro and no script:

    There are still many libraries which do not use *-config scripts or macros to make your life easier.
 The best thing to do in this situation is to allow the user to tell the configure script where to find the library.
You can do this with the AM_ARG_WITH() macro. This adds a command line argument to the configure script and complains if it isn't used.

    For instance:

# Ask user for path to libmysqlclient stuff:.
AC_ARG_WITH(mysql,
    [ --with-mysql=<path> prefix of MySQL installation. e.g. /usr/local or /usr],
    [MYSQL_PREFIX=$with_mysql],
    AC_MSG_ERROR([You must call configure with the --with-mysql option.
    This tells configure where to find the MySql C library and headers.
    e.g. --with-mysql=/usr/local or --with-mysql=/usr])
)

AC_SUBST(MYSQL_PREFIX)
MYSQL_LIBS="-L${MYSQL_PREFIX}/lib/mysql -lmysqlclient"
MYSQL_CFLAGS="-I${MYSQL_PREFIX}/include"
AC_SUBST(MYSQL_LIBS)
AC_SUBST(MYSQL_CFLAGS)

Bye


Javi

[Lcd4linux-devel] Kernel 2.6 /proc/stat

[Alex L. <al...@no...>]

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Hi,

After looking over vmstat for a bit, it seems they've calculated the
sums of the disk stats from /proc/diskstat. Maybe it's possible to read
from that? (Just wondering if it's possible to have this work with
Kernel 2.6.x)

Best Regards,

| Hi,
|
| Recently, I've installed lcd4linux version 0.9.11 on my Gentoo Linux
| system. I setup the config files and everything seems to work. However,
| the Hard Disk IO stats doesn't seems to move and i checked it with
| "lcd4linux -F -vvv" and it seems that the /proc/stat no longer contains
| the information it needs to get the disk_io and disk_rblk.
|
| Error: "parse(/proc/stat) failed: neither 'disk_io' nor 'disk_rblk' found"
|
| I cat /proc/stat on a 2.4.24 kernel system and I see the lines for
| disk_io and disk_rblk. However, when i do it on all 4 of my systems
| running Kernel 2.6.x, none of them have it. I'm just wondering if
| there's any patch for this or is there something wrong with the Kernel
| 2.6 or will this ever gonna work?
|
| Best Regards,
|
|
| -------------------------------------------------------
| This SF.Net email is sponsored by: IBM Linux Tutorials
| Free Linux tutorial presented by Daniel Robbins, President and CEO of
| GenToo technologies. Learn everything from fundamentals to system
| administration.http://ads.osdn.com/?ad_id=1470&alloc_id=3638&op=click
| _______________________________________________
| Lcd4linux-devel mailing list
| Lcd...@li...
| https://lists.sourceforge.net/lists/listinfo/lcd4linux-devel


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Re: [Lcd4linux-devel] IP address of an interface

[Martin H. <ma...@he...>]

Hi Michael,

> a user just asked how to get the IP address of (any) interface. So I 
> found out that we currently have no way to fetch the address anywhere.
> 
> /proc/net/dev does not contain any IP addresses.
> 
> plugin_ppp uses an ioctl() for PPP stats, but I found nothing about IP 
> addresses there.
> 
> anyone knows how to (easily) found out such things like addresses, MAC, 
> netmask, ... all this things ifconfig reports? (I don't want to solve 
> this using an exec 'ifconfig')
The IP-Address (as well as MAC address and other stuff reported by 
ifconfig) can be read by using ioctl calls (on a socket file-handle).

To implement that, it would basically need the same code as what Xavier 
is working on at the moment for getting wireless stats (Xavier - I 
haven't forgotten you, I'll hopefully have some time to go over and test 
your new plugin today - I didn't have access to my wireless-testbox in 
the last few days).

Shouldn't be too hard to implement, even if the individual IOCTL calls 
seem to not be documented terribly well.

Martin

-- 
You think that's tough?  Try herding cats!

[Lcd4linux-devel] IP address of an interface

[Michael R. <re...@eu...>]

Hi there,

a user just asked how to get the IP address of (any) interface. So I 
found out that we currently have no way to fetch the address anywhere.

/proc/net/dev does not contain any IP addresses.

plugin_ppp uses an ioctl() for PPP stats, but I found nothing about IP 
addresses there.

anyone knows how to (easily) found out such things like addresses, MAC, 
netmask, ... all this things ifconfig reports? (I don't want to solve 
this using an exec 'ifconfig')


bye, Michael

-- 
Michael Reinelt                                   Tel: +43 676 3079941
Geisslergasse 4                                   Fax: +43 316  692343
A-8045 Graz, Austria                          e-mail: re...@eu...

[Lcd4linux-devel] Kernel 2.6 /proc/stat

[Alex L. <al...@no...>]

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Hi,

Recently, I've installed lcd4linux version 0.9.11 on my Gentoo Linux
system. I setup the config files and everything seems to work. However,
the Hard Disk IO stats doesn't seems to move and i checked it with
"lcd4linux -F -vvv" and it seems that the /proc/stat no longer contains
the information it needs to get the disk_io and disk_rblk.

Error: "parse(/proc/stat) failed: neither 'disk_io' nor 'disk_rblk' found"

I cat /proc/stat on a 2.4.24 kernel system and I see the lines for
disk_io and disk_rblk. However, when i do it on all 4 of my systems
running Kernel 2.6.x, none of them have it. I'm just wondering if
there's any patch for this or is there something wrong with the Kernel
2.6 or will this ever gonna work?

Best Regards,
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Re: [Lcd4linux-devel] MySQL plugin news

[Michael R. <re...@eu...>]

Hi Javi,

> I enclose an improved version of MySQL plugin.


Fine! Already checked in into CVS, but with some modifications:

- The config section is no longer called "MySQL", but "Plugin MySQL" 
(take a look at lcd4linux.conf.sample)

- I put all section references into a global variable "Section"

- I modified some of the config info/error messages to emit the correct 
section.

- I prepared some SQL examples in the lcd4linux.conf.sample

- I enclosed the MySQL-Exit function between #ifdef HAVE_MYSQL_H


I hope this works, because I cannot test it...


> TO DO list :
>   -Add a function to fetch data (not only the number of rows) from the database.
>   -MySQLquery() function should allow either one or two arguments,
>    if there is only one, use the database value from the config file, if there are two,
>    use the second one as the new database name.
>   -Add an argument to mySQLstatus funtion.
>     The argument will indicate what to return:Uptime, Threads, Questions,Slow queries, Flush tables,...
>     If uptime, return it Like: Days,hours,minutes

The most imnportant thing would be a better autoconf makro which does 
not only check for mysql.h, but for libmyslq, too, and add this library 
to the CFLAGS or LFLAGS.

Anybody out there who has experience with this?

Anybody out there who uses programs which have a "soft dependency" to 
MySQL? Take a look into the configure.in and Makefile.am, maybe we can 
steal^H^H^H^H^Hadopt some code...

bye, Michael

-- 
Michael Reinelt                                   Tel: +43 676 3079941
Geisslergasse 4                                   Fax: +43 316  692343
A-8045 Graz, Austria                          e-mail: re...@eu...

[Lcd4linux-devel] MySQL plugin news

[Javi <ja...@gs...>]

Hi all.

I enclose an improved version of MySQL plugin.
New features:
-Now MySQL plugin is configured through a MySQL section in lcd4linux.conf. (See sample lcd4linux.conf attached)
-It uses persistent connections: connect on init and disconnect on exit.
-Connection trackin: It checks whether the connection to the server is working. If it has gone down, an automatic reconnection is attempted.

TO DO list :
  -Add a function to fetch data (not only the number of rows) from the database.
  -MySQLquery() function should allow either one or two arguments,
   if there is only one, use the database value from the config file, if there are two,
   use the second one as the new database name.
  -Add an argument to mySQLstatus funtion.
    The argument will indicate what to return:Uptime, Threads, Questions,Slow queries, Flush tables,...
    If uptime, return it Like: Days,hours,minutes

Please send comments and feedback.

Bye

Javi.

Re: [Lcd4linux-devel] plugin_wifi ?

[Xavier V. <xav...@fr...>]

Helli Martin !

> > I use 2.6 since 2.6.2 and never had big
> > problems with it (just one: vmware didn't worked, but I didn't use it)
> Well, for me, vmware is one of the show-stoppers (I don't really want to 
> have to back to dual-booting or having another computer under my desk). 
> And please, lets not get into the "what do you need windows for? Linux 
> can do everything" discussion - lets just assume that there is a need 
> for me to run windows at home, even if I prefer Linux most of the time.
In fact, the old version I had didn't support 2.6, but new versions do
 (hopefully) support 2.6 ! But as I didn't use it anymore, I didn't
 searched for an upgrade on *mule :)

> >> or go ahead and code the wifi plugin for 2.6, and I'll code a 2.4
> >> plugin for the rest of us).
> > Maybe it would be the best solution if ioctl are too complicated. Each
> > would be quite easy to code (one based on plugin_netdev, the other based
> > on i2c_sensors) while the ioctl one would be quite hard to code, IMHO
> I don't really see why it would be terribly hard to code - but I haven't 
> had time to look at it in detail yet.
I digged into wireless-tools source, and here is what to do :
- open a socket : socket(AF_INEL, SOCK_DGRM, 0)
- check if the interface has wireless extensions (SIOCGIWNAME ioctl)
- get the statistics (SIOCGIWSTATS ioctl)
- handle the iw_statistics struct, which contains itself structs, and
parse the info.
It is easier than I expected.

> I'm not quite sure why it would imply more memory "problems" (I'm not 
> even sure what you're referring to actually - do you mean memory usage? 
> "memory problems" imply a bug to me).
It's both a little more memory usage, but moreover, manipulating
struct->struct->__u32 variables may get quite messy :/
I'll try to code a test.

Bye !
-- 
Xavier VELLO <xav...@fr...>

Re: [Lcd4linux-devel] cfg_get() > Segmentation fault

[Michael R. <re...@eu...>]

Hi Javi,


> First, I think there is a problem with the Makefile. The configure
> script detects I have MySQL and pluging_mysql.c is compiled, but when
> compiling, it shows errors like:

You are right. The check for mysql.h is just a quick-hack. Please patch 
the makefile as you already did, until I found someone who can write me 
a good autoconf macro for this...

[Segfault with cfg_get()]

I've read the code, looks like Xavier is right: including cfg.h should 
solve this issue.

I tried to code lcd4linux in a way so it does not emit *any* warning at 
compiling. (except thwo or three which come from the fact that the code 
isn't finished at the moment).

If you get such a warning, chances are good that there's a mistake in 
your code, and that you should correct it.

bye, Michael

-- 
Michael Reinelt                                   Tel: +43 676 3079941
Geisslergasse 4                                   Fax: +43 316  692343
A-8045 Graz, Austria                          e-mail: re...@eu...

[Lcd4linux-devel] Re: [lcd4linux] NextGen Scroll function

[Michael R. <re...@eu...>]

Hi Stolz,

> Is the scroll feature ported to the CVS version?
> If afirmative, how can I use it?

No, it isn't. The concept is fundamental different: The NextGeneration 
uses two framebuffers (one for the layout, one for the display) which 
can be of different size. To scroll either horizontal or vertical, you 
just have to change the offset.

But bthis is not implemented at the moment.

Xavier, can you add this to our Todo-List?

bye, Michael

-- 
Michael Reinelt                                   Tel: +43 676 3079941
Geisslergasse 4                                   Fax: +43 316  692343
A-8045 Graz, Austria                          e-mail: re...@eu...

Re: [Lcd4linux-devel] cfg_get() > Segmentation fault

[Michael R. <re...@eu...>]

Hi Javi,

> Where should I add "cfg.h"?
> I've added #include "cfg.h" into plugin_mysql.c, but I'm afraid it doesn't solve it :(.

O, it will solve 'it', the question is what is 'it' :-)

an '#include <cfg.h>' is necessary to use the cfg_get() function, ans 
should cure your segfault. It has nothing to do with the mysql stuff.


bye, Michael

-- 
Michael Reinelt                                   Tel: +43 676 3079941
Geisslergasse 4                                   Fax: +43 316  692343
A-8045 Graz, Austria                          e-mail: re...@eu...

Re: [Lcd4linux-devel] cfg_get() > Segmentation fault

[Javi <ja...@gs...>]

> Hello Javi !
> 
> You forgot to include the "cfg.h" header :)
> Include cfg.h, and all will go well !

Where should I add "cfg.h"?
I've added #include "cfg.h" into plugin_mysql.c, but I'm afraid it doesn't solve it :(.

make clean
make distclean-hdr
./configure
make
...
gcc -DHAVE_CONFIG_H -I. -I. -I.    -I/usr/X11R6/include -D_GNU_SOURCE -Wall -g -O2 -c plugin_mysql.c
...
undefined reference to `mysql_init'
etc
...

Thanks in advice.


Javi

Re: [Lcd4linux-devel] cfg_get() > Segmentation fault

[Xavier V. <xav...@fr...>]

Hello Javi !

The solution to the claim was very simple, read this :
gcc -lmysqlclient -DHAVE_CONFIG_H -I. -I. -I.    -I/opt/X11R6/include
-D_GNU_SOU RCE -Wall -g -O2 -c plugin_mysql.c
plugin_mysql.c: In function `plugin_init_mysql':
plugin_mysql.c:143: warning: implicit declaration of function `cfg_get'
plugin_mysql.c:143: warning: initialization makes pointer from integer
without a  cast
plugin_mysql.c:143: warning: unused variable `server'

You forgot to include the "cfg.h" header :)
Include cfg.h, and all will go well !

Bye !
-- 
Xavier VELLO ( who made his good action of the week :D )

Re: [Lcd4linux-devel] cfg_get() > Segmentation fault

[Javi <ja...@gs...>]

Hi all.

First, I think there is a problem with the Makefile. The configure script detects I have MySQL and pluging_mysql.c is compiled, but when compiling, it shows errors like:
undefined reference to `mysql_init'
undefined reference to `mysql_real_connect'
etc

It's because MySQL libraries are in the mysqlclient library. So while compiling a MySQL program, it is necessary to add the -lmysqlclient compiler option.
I don't know how makefile is generated, but it should include the -lmysqlclient compiler option if MySQL is installed.
I've patched manually the Makefile adding "CC = gcc  -lmysqlclient" but it is not very elegant.

Now I return to my "loved" Segmentation fault ;)

remeber:
> > The problem is wherever I use cfg_get() function I get "Segmentation
> > fault" when running lcd4linux.
> 
> Can you send me the code?

I enclose the code and a sample lcd4linux.conf. In order to test MySQL pluging , just change the display settings to fit your display.
I've also created a MySQL account on my server, so developers can test the pluging (Only select privileges). Server, login, password and db are listed in the sample lcd4linux.conf file.

Here is gdb output:
Program received signal SIGSEGV, Segmentation fault.
0x080642a4 in cfg_get ()
(gdb) bt
#0  0x080642a4 in cfg_get ()
#1  0x080552a1 in plugin_init_mysql () at plugin_mysql.c:143
#2  0x08050bc6 in plugin_init () at plugin.c:209
#3  0x0804a7c9 in main (argc=3, argv=0x1) at lcd4linux.c:529

Bye

Javi.

Re: [Lcd4linux-devel] new website desing ?

[Xavier V. <xav...@fr...>]

Hi Michael, hi all !

> For the future, it would be better to put that stuff into a 'test' 
> subdir of sourceforge? Would be much easier to test...
The problem is that I can't use scp with a gsm    connection (think
  ssh :/ ). If you prefer, I can send you the tgz so you put them on  
 the server

> Now for my comments:
> - I don't like the background
I know, I don't like it too :/ I'll redesing a lot of the CSS soon.

> - the overlapping frames look like an rendering error to me :-(
Err... this is a feature. This is one thing I really like with CSS.
Everything is calculated with pixel size and so on. IMHO I prefer a menu
overlapping just a little the main div than separating them, it's more
'cosmetical'.

> - If we don't go for the old "LCD"-style menu images, I'm not shure if 
> this very green background is good...
In fact, I was thinking about using LCD-style text for the menus. There
 are three solutions :
- generate the images once, but we'll have problems with dynamic menus
(doc, ...)
- write the images in the server, with a PHP script, it's something very
doable, but maybe it would be slow.
- create one image for each 'character'

We can merge two types (eg: static images for top menu, then character
images for dynamic ones).

Bye !
-- 
Xavier VELLO <xav...@fr...>

Re: [Lcd4linux-devel] plugin_wifi ?

[Xavier V. <xav...@fr...>]

Hello Michael, hello Martin, hello list !

> Well, I'd favour this solution (using ioctl calls), but I would't rush 
> into replacing something that works (plugin_netdev).
> At first glance, trying to handle wireless devices (which supply 
> additional data, which in turn is why there's need for a wifi-plugin to 
> begin with) together with traditional network devices could make the 
> code pretty ugly fast.
That's why I like the sysfs solution, as it provides all the  
 informations ioctl provides without getting hard to implement (open
  the file, copy a buffer, strtod and we are) but there's the backward
 compatibility problem.

> Lets get the wireless stuff taken care of first, and then see how we can 
> merge traditional network devices and wireless devices.
I'm downloaded the wireless-tools source and the source of my wifi card
driver for 2.6, I'll try to experiment ioctl a bit, then we'll decide
what to do

> > We may in that case
> > keep plugin_netdev and write rapidly a plugin_net_wireless which parses
> > /proc/net/wireless (easilly writen too) so they can delay once more the
> > migration to the best kernel ever released ( until 2.8 is out :D )
> I think everybody on this list has understood by now that you are a big 
> fan of 2.6
Yes, I am :)
> - so, if you want to write a "2.6 only" plugin, feel free to do so. But
>  be assured - you won't make _me_ change to 2.6 any time soon ;-) I may
>  set up a test box some day to see if all the apps I need still work
>  under 2.6, but for now, I'm happy to have a system that simply works
>  (giving me time to work on other things - lcd4linux, for example -
>  instead of playing with my linux installation).
Okay, I won't dictate you to migrate to 2.6. But just read the next 4 lines:
2.4 hasn't been really stable until several monthes, but 2.6 is already
stable. Linus has understood the lesson with 2.4 and the 2.5 test phase
has been longer than ever. I use 2.6 since 2.6.2 and never had big
problems with it (just one: vmware didn't worked, but I didn't use it)

>  or go ahead and code the wifi plugin for 2.6, and I'll code a 2.4
>  plugin for the rest of us).
Maybe it would be the best solution if ioctl are too complicated. Each
would be quite easy to code (one based on plugin_netdev, the other based
on i2c_sensors) while the ioctl one would be quite hard to code, IMHO

> > The best solution would be ioctl, but I don't know how to do this, and I
> > don't know if it's worth the price to do this manner. If you know ioctl
> > and wants to dig this way, just raise your hand :)
> <Raises hand>
> I'll take care of it. I can't say when (I unfortunately had to get some 
> "real" work done this weekend (as in, "stuff one gets paid for"), but 
> I'll try to put something together by next weekend.
> </Raises hand>
Err... does somebody know if ioctl are _really_ faster than reading
procfs/sysfs ? I think ioctl imply (at least for this case) more memory
problems and uggly code.

Bye !
-- 
Xavier VELLO <xav...@fr...>

Re: [Lcd4linux-devel] new website desing ?

[Michael R. <re...@eu...>]

Hi Xavier,

> Here's a tar.bz2 of a static xhtml/css page which is a desing test for
> the new website. All the explanations are writen in the page itself.

For the future, it would be better to put that stuff into a 'test' 
subdir of sourceforge? Would be much easier to test...

Now for my comments:

- I don't like the background
- the overlapping frames look like an rendering error to me :-(
- If we don't go for the old "LCD"-style menu images, I'm not shure if 
this very green background is good...

bye, Michael

-- 
Michael Reinelt                                   Tel: +43 676 3079941
Geisslergasse 4                                   Fax: +43 316  692343
A-8045 Graz, Austria                          e-mail: re...@eu...

Re: [Lcd4linux-devel] plugin_wifi ?

[Michael R. <re...@eu...>]

Hi there,

I see no problem if the same information can be read from two different 
plugins. In fact, the plugin_ppp does exactly this: it returns CPS rate 
which is the same as the info from /proc/net/dev

As you already have seen, plugin_netdev won't be obsolete because not 
all the information passed here is available via ioctl()

as for the 2.4/2.6 discussion: lcd4linux should be as independant from 
the kernel as possible. There are some dependencies (e.g. the format of 
some files in /proc) but I always tried to autodetect the format and 
support as many formats=kernels as possible.

I have a 2.6 up and running here, but some very important subsystems 
(e.g. USB or VMware) fail at the moment... Thats why I go with 2.4.

The "main" kernel for lcd4linux is 2.4 , and probably will be for the 
next months.

bye, Michael

-- 
Michael Reinelt                                   Tel: +43 676 3079941
Geisslergasse 4                                   Fax: +43 316  692343
A-8045 Graz, Austria                          e-mail: re...@eu...