Install error, Linux, zlib

[mauritzhansen]

I am getting an install error (from source, ImageMagick-6.7.5, CentOS 5.7):

/usr/bin/ld: /usr/local/lib/libz.a(crc32.o): relocation R_X86_64_32 can not be used when making a shared object; recompile with -fPIC
/usr/local/lib/libz.a: could not read symbols: Bad value

This same issue was discussed in an old tag. The answer that worked for the poster was:

Do as the exception suggests. Remove the Zlib distribution and include -fPIC on the compile command line. Now try configuring / installing ImageMagick again.

I succeed in adding the -fPIC compile command, but what is meant with 'remove the Zlib distribution'? If I attempt to remove this package from my system I get warned of a LOT of dependencies that will also be removed, so this does not seem like a good solution. Also, I believe I need Zlib for png images?

[fmw42]

I am not an expert on this, but I suspect that means --without zlib in your IM ./configure

see
http://www.imagemagick.org/script/advan ... lation.php

[mauritzhansen]

Thanks fmw42,

I had tried without zlib before but it still seemed to include it. Then I found another post that said png support requires zlib, so including png will include zlib even if I state that it should be excluded.

I have now succeeded in installing ImageMagic by excluding zlib and png.

However, I know that I am going to require png support. Any suggestions on how to get that included?

[fmw42]

I think you will need to hear back from the IM developers on that. I am not that much of an expert on compiling IM.

[magick]

This issue is a standard compile / build problem, not a problem specific to ImageMagick. Your build wants a position independent library which you can get by compiling the Zlib library with -fPIC. Query Google with R_X86_64_32 and fPIC and you will see numerous articles about this problem.

[mauritzhansen]

I installed the latest zlib and could then install ImageMagic. However, I noticed that I had no support for png and jpeg. So, I fixed that, did a make uninstall of ImageMagick and then a configure, but make now gives the following error:

magick/.libs/libMagickCore.so: undefined reference to `gzgetc_'

Any ideas?

[magick]

ImageMagick calls gzgetc() from magick/blob.c. Its defined in the ZLib API and should be part of the ZLib library.

[mauritzhansen]

Uninstalled zlib and reinstalled and that did the trick. Thanks!