9 Mar
2012
9 Mar
'12
7:04 p.m.
It is a "gcc >=4.6.2" issue. With the
new mandates
from gcc, any external
library references are now required to be explicitly
designated in the linker
string. IIRC prior to 4.6.2, simply having the library on
your system and the
compiler being able to find it was enough. That's what the
error is telling you:
/usr/bin/ld: CMakeFiles/ksnapshot.dir/windowgrabber.cpp.o:
undefined reference
to symbol 'XShapeQueryExtension'
/usr/bin/ld: note: 'XShapeQueryExtension' is defined in DSO
/usr/lib/libXext.so.6 so try adding it to the linker command
line
/usr/lib/libXext.so.6: could not read symbols: Invalid
operation
collect2: ld returned 1 exit status
THIS is the important part of the error:
/usr/bin/ld: note: 'XShapeQueryExtension' is defined in DSO
/usr/lib/libXext.so.6 so try adding it to the linker command
line
It's gcc telling you, "I know exactly where the darn symbol
is located, but I'm
not going to use the damn thing until you put it in your
linker string..."
Yes, I understand that gcc is becoming more persnickety with each release. All I am
questioning is why the failure with ksnapshot? No previous build used Xext to build
ksnapshot. I see the "-lXext" reference in my build log for kuickshow but not
with ksnapshot. Seems gcc is overextending itself and linking things that previously were
not linked.
Darrell