CODEWITHSUNDEEP
macosdynamicsconsdylib
chak
chak

Reputation: 21

scons dylib dynamic linking on mac

I want to link some dynamic libraries in my project with scons.

Example:

source/main.cpp

tool/lib/libboost_system.dylib

Binary Location

source/progbinary

My problem is, after the link process, the binary can't find libboost_system.dylib

dyld: Library not loaded: libboost_system.dylib

otool -L shows the problem. I can fix this with a little script that corrects the path. But I want to do this in scons.

On linux it is really easy I have only to set the RPATH in scons.

----- after the tip from @Brady

I add Linkflags for my library. After Linking I got the Error

'g++: error: -install_name only allowed with -dynamiclib'

So I add to the command

LINKFLAGS = '-dynamiclib install_name @executable_path/libWhatever.dylib'

And now I get if I call my execute the message

'cannot execute binary file'

And

otool -L

show me:

@executable_path/tools/lib/libboost_filesystem.dylib (compatibility version 0.0.0, current version 0.0.0) libboost_system.dylib (compatibility version 0.0.0, current version 0.0.0)

the linking command from scons looks like:

/opt/local/bin/g++ -o source/prog -dynamiclib -install_name @executable_path/tools/lib/libboost_system.dylib source/main.o -Ltools/lib -lboost_system

Upvotes: 2

Views: 1308

Answers (1)

Brady
Brady

Reputation: 10357

According to the comment provided above by trojanfoe: scons dylib dynamic linking on mac

The following needs to be passed to the linker:

-install_name @executable_path/libWhatever.dylib

This can be done in SCons as follows:

env = Environment()
env.Append(LINKFLAGS = ['-install_name @executable_path/libWhatever.dylib'])

If you need to compile a dynamic (shared) library, it can be done with the SharedLibrary() builder.

Upvotes: 2

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