BGRA and webp

[winni]

Hi!

Strange error message:

Code: Text  [Select][+][-]

1. Cannot find libwebp library (libwebp.so.6)
2.  

That's right. In my system there is libwebp.so.7 installed.

How to get around this problem?

Winni

[circular]

Normally it finds it if there is a newer version.

I suppose it is FindLinuxLibrary of linuxlib (in BGRABitmap folder) that doesn't find it for some reason.

Can you try and debug it?

It uses the bash command "ldconfig -p". What does it display for you?

[winni]

Hi!

I get:

Code: Bash  [Select][+][-]

1. ldconfig -p | grep webp
2.         libwebpmux.so.3 (libc6,x86-64) => /lib64/libwebpmux.so.3
3.         libwebpmux.so.3 (libc6) => /lib/libwebpmux.so.3
4.         libwebpdemux.so.2 (libc6,x86-64) => /lib64/libwebpdemux.so.2
5.         libwebp.so.7 (libc6,x86-64) => /lib64/libwebp.so.7
6.         libwebp.so.7 (libc6) => /lib/libwebp.so.7
7.  

System is Suse Tubleweed


Winni

PS: BGRAbitmapVersionStr is 11.3.1

[winni]

Hi!

Due to the rolling release libwebp.so.7  was installed 2021-10-20
Behind the back of BGRA.

I deinstalled the BGRAbitmapPack.
And installed it again.

The error remains the same:
It is looking for libwebp.so.6 and does not find it.

Winni

[circular]

Ok. If you put a breakpoint on line 88 of linuxlib.pas, does it get there?

[winni]

Hi!

No, it never reaches line 88 in linuxlib.pas

If  I do a

Code: Pascal  [Select][+][-]

1. tmp := TBGRAbitmap.Create('/home/..../Alan-Turing.webp');
2.  

it jumps direct to the exception.
The assembler window shows:

Code: Text  [Select][+][-]

1. fpc_raiseexception
2. 0000000000431F70 53                       push   %rbx
3. 0000000000431F71 4154                     push   %r12
4. 0000000000431F73 4155                     push   %r13
5. .......
6.  

It seems that the line in linuxlib is never reached.

Winni


 

[winni]

Hi!


linuxlib.pas:

Code: Pascal  [Select][+][-]

1. RunCommand('ldconfig', ['-p'], dataText, []);
2.  

results in an empty string dataText

Reason:

ldconfig must be run as root.
My test is run as simple user.

Winni

[winni]

Hi!

I just gave the wrong reason:

ldconfig in readonly (-p) can be  done by anyone.

BUT:

You have to give the whole path:

Code: Bash  [Select][+][-]

1.  /usr/sbin/ldconfig  -p

Winni


PS.:  Just patched and tested: Works fine!!!

[circular]

Oh ok cool.

I wonder though if that would always be the path to use.

I have found this suggested paths:
/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin

So maybe searching in those directories for ldconfig would do.

[Fred vS]

Oh ok cool.

I wonder though if that would always be the path to use.

I have found this suggested paths:
/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin

So maybe searching in those directories for ldconfig would do.

Hello.

Here, on Debian 11 64 bit, it is on /usr/sbin/ldconfig and like Winni noted, the full path is needed.

[winni]

Hi!

As root you don't need a path.

As simple user it is necessary. The error message (german)

Code: Bash  [Select][+][-]

1. Der absolute Pfad für 'ldconfig' ist '/usr/sbin/ldconfig',
2. daher kann das Programm möglicherweise nur von Benutzern
3. mit Superuser-Rechten gestartet werden (z. B. root).
4.  

Winni

[circular]

Hi! I've added on dev-bgrabitmap a function to look into the various paths.

Can you try it?

[ADMGNS]

hello
a quick and dirty solution.. clone the library file and rename it as expected..
lucks