[CMake] target_link_libraries can't link shared libraries not listed in LD_LIBRARY_PATH
Hi All!
I have a problem with target_link_libraries. It can't link with shared
libraries not from directory listed in LD_LIBRARY_PATH.
1. When I try to link shared library with the full path obtained from
find_library, my library is passed to gcc without -l option as ordinary
object file.
2. When I try to link by specifying short name cblas I've got the
error message:
Linking CXX shared library ../../sndcompare/amd64sse3/libsndcompared.so
/usr/bin/ld: cannot find -lcblas
collect2: ld returned 1 exit status
make[2]: *** [../../sndcompare/amd64sse3/libsndcompared.so] Error 1
make[1]: *** [CMakeFiles/sndcompare.dir/all] Error 2
make: *** [all] Error 2
*** Failed ***
OS: Ubuntu 11.10 64 bit
Compiler: g++ 4.6.1.
Cmake 2.8.5
add_library(${lib_name} SHARED
${io_files}
${utils_files}
${tech_independ_files}
${other_files}
)
find_library(atlas
NAME atlas
PATHS
${CMAKE_CURRENT_SOURCE_DIR}/${CMAKE_SYSTEM_NAME}/atlas/${arch}/lib
DOC Atlas library
)
find_library(cblas
NAME cblas
PATHS
${CMAKE_CURRENT_SOURCE_DIR}/${CMAKE_SYSTEM_NAME}/atlas/${arch}/lib
DOC Cblas library
)
link_directories(
${CMAKE_CURRENT_SOURCE_DIR}/${CMAKE_SYSTEM_NAME}/atlas/${arch}/lib
${CMAKE_CURRENT_SOURCE_DIR}/../../Sphinx/sphinxbase/${CMAKE_SYSTEM_NAME}/${arch}/lib
)
target_link_libraries(${lib_name}
debug ${do_scoring_debug}
optimized ${do_scoring}
general ${spinx}
general rt
general dl
general pthread
general cblas
general ${atlas}
)
Thank you in advance, Vyacheslav.
--
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Re: [CMake] target_link_libraries can't link shared libraries not listed in LD_LIBRARY_PATH
Hi,
On Mon, Apr 23, 2012 at 13:24, Vyacheslav Karamov ubuntul...@yandex.ruwrote:
Hi All!
I have a problem with target_link_libraries. It can't link with shared
libraries not from directory listed in LD_LIBRARY_PATH.
1. When I try to link shared library with the full path obtained from
find_library, my library is passed to gcc without -l option as ordinary
object file.
What is the problem with linking the absolute path of the shared library?
This should just work
2. When I try to link by specifying short name cblas I've got the error
message:
Linking CXX shared library ../../sndcompare/amd64sse3/**libsndcompared.so
/usr/bin/ld: cannot find -lcblas
collect2: ld returned 1 exit status
make[2]: *** [../../sndcompare/amd64sse3/**libsndcompared.so] Error 1
make[1]: *** [CMakeFiles/sndcompare.dir/**all] Error 2
make: *** [all] Error 2
*** Failed ***
This is because the linker does not know the directory where to search for
the library.
add_library(${lib_name} SHARED
${io_files}
${utils_files}
${tech_independ_files}
${other_files}
)
find_library(atlas
NAME atlas
PATHS ${CMAKE_CURRENT_SOURCE_DIR}/${**CMAKE_SYSTEM_NAME}/atlas/${**
arch}/lib
DOC Atlas library
)
find_library(cblas
NAME cblas
PATHS ${CMAKE_CURRENT_SOURCE_DIR}/${**CMAKE_SYSTEM_NAME}/atlas/${**
arch}/lib
DOC Cblas library
)
link_directories(
${CMAKE_CURRENT_SOURCE_DIR}/${**CMAKE_SYSTEM_NAME}/atlas/${**arch}/lib
${CMAKE_CURRENT_SOURCE_DIR}/..**/../Sphinx/sphinxbase/${CMAKE_**
SYSTEM_NAME}/${arch}/lib
)
link_directories is not needed at all here or should not be needed. Just
make sure to pass ${cblas} and ${atlas} to
target_link_libraries. If that produces errors please provide the exact
error message.
Andreas
--
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Re: [CMake] target_link_libraries can't link shared libraries not listed in LD_LIBRARY_PATH
Hi!
I just find the solution. The problem was in order how libraries were
specified.
target_link_libraries(${lib_name}
general rt
general dl
general pthread
debug ${do_scoring_debug}
optimized ${do_scoring}
general ${spinx}
general ${cblas}
general ${atlas}
)
23.04.2012 16:28, Andreas Pakulat ???:
Hi,
On Mon, Apr 23, 2012 at 13:24, Vyacheslav Karamov
ubuntul...@yandex.ru mailto:ubuntul...@yandex.ru wrote:
Hi All!
I have a problem with target_link_libraries. It can't link with
shared libraries not from directory listed in LD_LIBRARY_PATH.
1. When I try to link shared library with the full path obtained
from find_library, my library is passed to gcc without -l option
as ordinary object file.
What is the problem with linking the absolute path of the shared
library? This should just work
2. When I try to link by specifying short name cblas I've got
the error message:
Linking CXX shared library
../../sndcompare/amd64sse3/libsndcompared.so
/usr/bin/ld: cannot find -lcblas
collect2: ld returned 1 exit status
make[2]: *** [../../sndcompare/amd64sse3/libsndcompared.so] Error 1
make[1]: *** [CMakeFiles/sndcompare.dir/all] Error 2
make: *** [all] Error 2
*** Failed ***
This is because the linker does not know the directory where to search
for the library.
add_library(${lib_name} SHARED
${io_files}
${utils_files}
${tech_independ_files}
${other_files}
)
find_library(atlas
NAME atlas
PATHS
${CMAKE_CURRENT_SOURCE_DIR}/${CMAKE_SYSTEM_NAME}/atlas/${arch}/lib
DOC Atlas library
)
find_library(cblas
NAME cblas
PATHS
${CMAKE_CURRENT_SOURCE_DIR}/${CMAKE_SYSTEM_NAME}/atlas/${arch}/lib
DOC Cblas library
)
link_directories(
${CMAKE_CURRENT_SOURCE_DIR}/${CMAKE_SYSTEM_NAME}/atlas/${arch}/lib
${CMAKE_CURRENT_SOURCE_DIR}/../../Sphinx/sphinxbase/${CMAKE_SYSTEM_NAME}/${arch}/lib
)
link_directories is not needed at all here or should not be needed.
Just make sure to pass ${cblas} and ${atlas} to
target_link_libraries. If that produces errors please provide the
exact error message.
Andreas
--
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Visit other Kitware open-source projects at
http://www.kitware.com/opensource/opensource.html
Please keep messages on-topic and check the CMake FAQ at:
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Follow this link to subscribe/unsubscribe:
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Re: [CMake] target_link_libraries can't link shared libraries not listed in LD_LIBRARY_PATH
Hi!
I just find the solution. The problem was in order how libraries were
specified.
target_link_libraries(${lib_name}
general rt
general dl
general pthread
debug ${do_scoring_debug}
optimized ${do_scoring}
general ${spinx}
general ${cblas}
general ${atlas}
)
You don't need the general keyword, specifying just a library will make it
be used with any build type.
Also you may want to replace general dl with ${CMAKE_DL_LIBS} and
general pthread with ${CMAKE_THREAD_LIBS_INIT} for portability. Note
that you need find_package(Threads) for the latter to work.
Eike
--
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Please keep messages on-topic and check the CMake FAQ at:
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Follow this link to subscribe/unsubscribe:
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