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