On 07.01.2011, at 13:27, Albrecht Schlosser wrote:

> On 07.01.2011 10:38, Matthias Melcher wrote:
>> 
>> I don't know much about X11 and much less about Xinerama, but I tried to get 
>> the DPI code running on X yesterday, and all my virtual machines (3 Linux 
>> variants) fell back to X11 (no Xinerama). After investigating a little more, 
>> I found that there is no libXinerama.so, but there are libXinerama.1.so and 
>> libXinerama.1.0.so or similar.
>> 
>> Shouldn't there be a symbolic link? Or is that only generated if one 
>> actually has multiple displays?
> 
> I have on Linux (Ubuntu 9.x), in a Virtualbox VM:
> 
> lrwxrwxrwx 1 ... /usr/lib/libXinerama.so.1 -> libXinerama.so.1.0.0
> -rw-r--r-- 1 ... /usr/lib/libXinerama.so.1.0.0
> 
> ... and on Cygwin (Windows 7):
> 
> -rw-r--r-- 1 ... /usr/lib/libXinerama.a
> -rwxr-xr-x 1 ... /usr/lib/libXinerama.dll.a*
> -rwxr-xr-x 1 ... /usr/lib/libXinerama.la*
> 
> I know the latter is not relevant here, but anyway. Configure finds
> Xinerama only on my Cygwin system, but not on Linux. I don't know
> whether it depends on the (missing?) link or maybe missing headers,
> though.

Yes, after more investigation, I found that the headers were missing too (or in 
other locations, containing other functions...). "configure" seems to be 
correct then.

>> And even though "configure" has not found Xinerama, it is still listed in 
>> the summary of the script. That can't be good?
> 
> That's probably only a wrong display in configure and harmless.
> I just verified that HAVE_XINERAMA is set correctly in config.h
> (always #define'd, but with 0 or 1, resp.).
> 
> BTW.: I'm just fixing a bug WRT Xinerama and dpi for Cygwin/X11 or
> maybe generally for X11: As it is on my system, configure finds
> Xinerama, but it is not active with my X server configuration,
> i.e. XineramaIsActive(fl_display) returns false... Please don't
> submit RC3 before this is committed.

No, I'll wait until tonight (probably 2100 CET). We will still need another RC 
with the new jpeg, png, and z lib.
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