Hi Andrew.
Generally, both versions of the library are needed if one needs multi
architecture building option (e.g. x86_64 native build and i386
backsupport (cross)build for 32-bit installations).
I am building my i386 and x86_64 application on Ubuntu 12.04.3 LTS using -m32
and -m64 gcc options.
But running only 64-bit version of the application locally for the matter.
To accomplish this I have done:
Firstly installed libxml2-dev (x86_64)
sudo apt-get install libxml2-dev
Secondly, move problematic xml2-config
sudo mv /usr/bin/xml2-config /usr/bin/xml2-config.x86_64
Then install libxml2-dev:i386
sudo apt-get install libxml2-dev:i386
Rename xml2-config for i386
sudo mv /usr/bin/xml2-config /usr/bin/xml2-config.i386
Restore x86_64 xml2-config
sudo cp /usr/bin/xml2-config.x86_64 /usr/bin/xml2-config
Finally, had to call ldconfig to refresh the library paths and gcc
builds my application with -m32 and excplicit -m64 (although not
needed).
ldconfig reports:
$ ldconfig -p | grep xml2
libxml2.so.2 (libc6,x86-64) => /usr/lib/x86_64-linux-gnu/libxml2.so.2
libxml2.so.2 (libc6) => /usr/lib/i386-linux-gnu/libxml2.so.2
libxml2.so (libc6,x86-64) => /usr/lib/x86_64-linux-gnu/libxml2.so
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https://bugs.launchpad.net/bugs/987502
Title:
libxml2-dev: /usr/bin/xml2-config isn't identical across all arch
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