On Mon, Nov 23, 2009 at 6:33 PM, walt w41...@gmail.com wrote:
On 11/23/2009 08:02 AM, Alexander wrote:
Hi,
I'm trying to upgrade app-text/poppler-utils (as part of a bigger
system upgrade), but it fails...
libtool: link: x86_64-pc-linux-gnu-g++ -Wall -Wno-write-strings -O2
-march=nocona -pipe -Wl,-O1 -o pdfinfo pdfinfo.o printencodings.o
parseargs.o -lpoppler /usr/lib64/libfontconfig.so
/usr/lib64/libfreetype.so /usr/lib64/libexpat.so -lopenjpeg -lz
ImageOutputDev.o: In function `ImageOutputDev::drawImage(GfxState*,
Object*, Stream*, int, int, GfxImageColorMap*, int*, int)':
ImageOutputDev.cc:(.text+0x2f4): undefined reference to
`ImageStream::close()'
Just finding the real error in all that junk is the first challenge
in debugging :o) I just noticed that the word 'error' doesn't even
appear in the libtool 'error' message. Hrmphh! Yet another black
mark on libtool's report card.
Notice the double colons in ImageStream::close(). That's a dead
giveaway that this is c++ code. Remember that, because you will see
this kind of c++ problem fairly often.
The usual suspect is that you are now using a different (newer?) gcc
to build poppler-utils than you were using when you compiled the
c++ library that's causing this problem. (Usually, but not always.)
So, which c++ library is causing the problem?
A quick and dirty check:
$grep -r ImageStream /usr/include/*
/usr/include/ImageMagick/magick/image.h: DisassociateImageStream(Image *),
/usr/include/ImageMagick/magick/methods.h:#define DisassociateImageStream
PrependMagickMethod(DisassociateImageStream)
/usr/include/poppler/Gfx.h: Stream *buildImageStream();
/usr/include/poppler/Stream.h:// ImageStream
/usr/include/poppler/Stream.h:class ImageStream { Eureka!
$equery b Stream.h
[ Searching for file(s) Stream.h in *... ]
dev-libs/poppler-0.10.7 (/usr/include/poppler/Stream.h)
So, the guilty party is poppler? Looks like it.
The cheap and dirty remedy is to re-emerge poppler, but just for my
own education (and yours, I hope) I'm slogging ahead:
I reinstalled dev-libs/poppler, and now installing app-text/poppler-utils
works.
The ImageStream 'class' should define a 'method' named close(). (This
is the usual and customary object-oriented paradigm.) Take a look at
Stream.h, and look for these lines:
// Close the stream previously reset
void close();
Do you see them? If not, re-emerge poppler and look again. I'd like
to know if I'm on the right track.
I checked this, and I could not find this line. Then I reinstalled it, and
now it's there.
Thanks for the very informative reply! -- next time I'll know to try this
approach too.
Best,
Alexander
