Re: static library linking issues


Piotr Stanczyk <piotr.s...@...>
 

Hi Jeremy,

Sorry for the delay in getting this info back to you. This is what our
build people say:


We're actually building verison 1.0.6. This was a clean build, and
we're not using ocio elsewhere in our codebase. The ocio build was
invoked via:

cmake -D CMAKE_INSTALL_PREFIX=../dist -D CMAKE_SKIP_RPATH=YES -D
PYTHON=/usr/bin/python2.6 ../

Could it be that the symbols from the the YAML and tinxml libs are
hidden in the ocio build? Is there a way to disable that and make
them all publicly available? Taking the first undefined reference,
for example:

objdump -tC libOpenColorIO.so.1.0.6 | grep "YAML::Emitter::Emitter"
00000000000cfb00 l F .text 000000000000006c .hidden
YAML::Emitter::Emitter()
00000000000cfb70 l F .text 000000000000006c .hidden
YAML::Emitter::Emitter()


And in the ocio code it's definitely referenced ( src/core/Config.cpp ):


void Config::serialize(std::ostream& os) const
{
try
{
YAML::Emitter out;




On Tue, May 1, 2012 at 4:24 PM, Jeremy Selan <jeremy...@...> wrote:
Ugh!

Sorry to hear you've having trouble with static linking.

Can you post the shell command you're using to build OCIO with?

(At SPI we happen to only use OCIO in a dynamically linked context so we
havent run into this error yet).

In the latest OCIO release (1.0.7) we bumped the internal yaml-cpp
dependency to 0.3.0. I presume you're building 1.0.7?

A few ideas to test:
- Can you confirm that you're using a clean build?  It's possible that if
you have old .o files lying around-  built against a prior OCIO - it could
cause weirdness.

- Is it possible that another part of your codebase is statically linking
against a different OCIO version? (If you have another part of the code
statically links to 0.2.X yaml-cpp, I could imagine a yaml-cpp symbol clash)

-- Jeremy


On Tue, May 1, 2012 at 11:35 AM, Piotr Stanczyk <piotr.s...@...>
wrote:

Hi All,


So far I've been using the .so's to link against. However, I've run
into an issue with building a binary that links against the static
libs with a sleuth of errors (see below).
I don't think I did anything unusual in the building of this. I'll
start digging into what could be causing this, but if anyone has any
pointers that would be most welcome.

Cheers

Piotr





/var/tmp-ssd/doNotRemove/builds/zeno3_ssd/RHEL5_AMD64_OPT/lib/libOpenColorIO.a(Config.cpp.o):
In function `OpenColorIO::v1::Config::serialize(std::basic_ostrea
m<char, std::char_traits<char> >&) const':

/home/ewimmer/ewimmer_importlibs/importlibs/src/OpenColorIO/imageworks-OpenColorIO-a16d9ac/src/core/Config.cpp:1591:
undefined reference to `YAML::Emitter::Emi
tter()'

/var/tmp-ssd/doNotRemove/builds/zeno3_ssd/RHEL5_AMD64_OPT/lib/libOpenColorIO.a(Config.cpp.o):
In function `operator<<':

/home/ewimmer/ewimmer_importlibs/importlibs/src/OpenColorIO/imageworks-OpenColorIO-a16d9ac/build/ext/dist/include/yaml-cpp/emitter.h:152:
undefined reference t
o `YAML::Emitter::SetLocalValue(YAML::EMITTER_MANIP)'

/var/tmp-ssd/doNotRemove/builds/zeno3_ssd/RHEL5_AMD64_OPT/lib/libOpenColorIO.a(Config.cpp.o):
In function `operator<<':

/home/ewimmer/ewimmer_importlibs/importlibs/src/OpenColorIO/imageworks-OpenColorIO-a16d9ac/src/core/Config.cpp:1594:
undefined reference to `YAML::Emitter::Set
LocalValue(YAML::EMITTER_MANIP)'

/home/ewimmer/ewimmer_importlibs/importlibs/src/OpenColorIO/imageworks-OpenColorIO-a16d9ac/src/core/Config.cpp:1594:
undefined reference to `YAML::Emitter::Set
LocalValue(YAML::EMITTER_MANIP)'

/var/tmp-ssd/doNotRemove/builds/zeno3_ssd/RHEL5_AMD64_OPT/lib/libOpenColorIO.a(Config.cpp.o):
In function `operator<<':

/home/ewimmer/ewimmer_importlibs/importlibs/src/OpenColorIO/imageworks-OpenColorIO-a16d9ac/build/ext/dist/include/yaml-cpp/emitter.h:152:
undefined reference t
o `YAML::Emitter::SetLocalValue(YAML::EMITTER_MANIP)'

/var/tmp-ssd/doNotRemove/builds/zeno3_ssd/RHEL5_AMD64_OPT/lib/libOpenColorIO.a(Config.cpp.o):
In function `WriteIntegralType<int>':

/home/ewimmer/ewimmer_importlibs/importlibs/src/OpenColorIO/imageworks-OpenColorIO-a16d9ac/build/ext/dist/include/yaml-cpp/emitter.h:104:
undefined reference t
o `YAML::Emitter::good() const'

/home/ewimmer/ewimmer_importlibs/importlibs/src/OpenColorIO/imageworks-OpenColorIO-a16d9ac/build/ext/dist/include/yaml-cpp/emitter.h:108:
undefined reference t
o `YAML::Emitter::PreWriteIntegralType(std::basic_stringstream<char,
std::char_traits<char>, std::allocator<char> >&)'

/home/ewimmer/ewimmer_importlibs/importlibs/src/OpenColorIO/imageworks-OpenColorIO-a16d9ac/build/ext/dist/include/yaml-cpp/emitter.h:110:
undefined reference t
o `YAML::Emitter::PostWriteIntegralType(std::basic_stringstream<char,
std::char_traits<char>, std::allocator<char> > const&)'

/var/tmp-ssd/doNotRemove/builds/zeno3_ssd/RHEL5_AMD64_OPT/lib/libOpenColorIO.a(Config.cpp.o):
In function `operator<<':

/home/ewimmer/ewimmer_importlibs/importlibs/src/OpenColorIO/imageworks-OpenColorIO-a16d9ac/build/ext/dist/include/yaml-cpp/emitter.h:152:
undefined reference t
o `YAML::Emitter::SetLocalValue(YAML::EMITTER_MANIP)'
/home/ewimmer/ewimmer_importlibs/importlibs/src/OpenColorIO/ima
....

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