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cmake adds flags,libs from subdirectory which corrupt linking / library linking precedence


cmake adds flags,libs from subdirectory which corrupt linking / library linking precedence

By : saroj sahu
Date : November 21 2020, 04:03 PM
will help you Issue 1 can be solved by telling cmake to turn off transitive linking
mex/CMakeList.txt
code :
set_target_properties(matlabengine PROPERTIES LINK_INTERFACE_LIBRARIES "")
export LD_LIBRARY_PATH=/usr/lib/x86_64-linux-gnu/:/usr/local/MATLAB/R2013a/bin/glnxa64/


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Avoid linking in unused symbols when linking against static libs

Avoid linking in unused symbols when linking against static libs


By : Fluffmiceter
Date : March 29 2020, 07:55 AM
To fix this issue Try -Wl,--gc-sections.
As regards -dead_strip (what you probably meant by -dead_code):
linking 3rd party static libs in cgo library

linking 3rd party static libs in cgo library


By : user2083351
Date : March 29 2020, 07:55 AM
hope this fix your issue The order of the -l flags matters when you are linking with static libraries. If you link using -lfoo -lbar -lbaz, any symbols required by libbar.a will only be searched for in libbar.a and libbaz.a. Even if libfoo.a contains the symbols you're after, the linker won't find them.
What is happening is that for each library, the linker unpacks the archive and adds the object files that contain symbols referenced by whatever came before. If a particular object file in the archive isn't needed, it is ignored.
Android NDK Cmake Linking .a (Static) Libs

Android NDK Cmake Linking .a (Static) Libs


By : David
Date : March 29 2020, 07:55 AM
hope this fix your issue To post the answer. As Tsyvarev said, the problem with non-absolute file name for library. When I used absoulte path it worked like a charm.
Thank you. Cheers.
CMake: Linking a static library from a subdirectory to an executable in another subdirectory

CMake: Linking a static library from a subdirectory to an executable in another subdirectory


By : klingz
Date : March 29 2020, 07:55 AM
Does that help Right, you set that ${A_LIBS} variable in nested CMakeLists.txt. The solution is to use set() command with PARENT_SCOPE or CACHE keyword.
Make/Cmake subdirectory linking to external library fails

Make/Cmake subdirectory linking to external library fails


By : Prathamesh Sahasrabu
Date : March 29 2020, 07:55 AM
I wish this help you I would have written this as a comment but I don't have enough reputation for that. Is this a situation where you need to use this Triangle (https://github.com/wo80/Triangle), rather than the original Triangle (https://www.cs.cmu.edu/~quake/triangle.html)? If you can use the latter, I know from experience that its is very easy to link to. I just put it in a subdirectory in my code with this CMakeLists.txt.
code :
## This only works for linux. Use an if statement to handle all architectures.
SET(CMAKE_C_FLAGS
  "${CMAKE_C_FLAGS} -O -DLINUX -DTRILIBRARY -w -DANSI_DECLARATORS"
  )

SET(FILES_SOURCE
  triangle.h triangle.c
  )

ADD_LIBRARY( my_local_name_for_triangle_library STATIC ${FILES_SOURCE} )
include_directories(my_local_triangle_dir)
target_link_libraries(my_local_name_for_triangle_library)
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