Hi all,
I am learning Step-8 in the tutorial. I want to use the library "Armadillo"
(which is a library for scientific computing and linear algebra) together
with dealii in step-8.cc.
To compile a cpp file that only depends on the Armadillo library, one needs
to excute the following commends at the commend line : "g++ example.cpp -o
example -O2 -larmadillo"
So I replace "mylib" in dealii documentation about modifying cmakelist.txt
with "armadillo", and modify the CMakeList.txt file as the following
_____________________________________________________________________
CMAKE_MINIMUM_REQUIRED(VERSION 2.8.12)
FIND_PACKAGE(deal.II 8.5.0 REQUIRED
HINTS ${DEAL_II_DIR} ../ ../../ $ENV{DEAL_II_DIR}
)
DEAL_II_INITIALIZE_CACHED_VARIABLES()
PROJECT(myproject)
ADD_LIBRARY(armadillo)
DEAL_II_SETUP_TARGET(armadillo)
ADD_EXECUTABLE(mycode step-8.cc)
DEAL_II_SETUP_TARGET(mycode)
TARGET_LINK_LIBRARIES(mycode armadillo)
_____________________________________________________________________
And I got the the following error:
-- Using the deal.II-8.5.1 installation found at
/home/liu/deal.ii-candi/deal.II-v8.5.1
-- Include macro
/home/liu/deal.ii-candi/deal.II-v8.5.1/share/deal.II/macros/macro_deal_ii_initialize_cached_variables.cmake
-- Include macro
/home/liu/deal.ii-candi/deal.II-v8.5.1/share/deal.II/macros/macro_deal_ii_setup_target.cmake
-- Include macro
/home/liu/deal.ii-candi/deal.II-v8.5.1/share/deal.II/macros/macro_deal_ii_query_git_information.cmake
-- Include macro
/home/liu/deal.ii-candi/deal.II-v8.5.1/share/deal.II/macros/macro_deal_ii_pickup_tests.cmake
-- Include macro
/home/liu/deal.ii-candi/deal.II-v8.5.1/share/deal.II/macros/macro_deal_ii_add_test.cmake
-- Include macro
/home/liu/deal.ii-candi/deal.II-v8.5.1/share/deal.II/macros/macro_deal_ii_invoke_autopilot.cmake
You have called ADD_LIBRARY for library armadillo without any source files.
This typically indicates a problem with your CMakeLists.txt file
-- Configuring done
CMake Error: Cannot determine link language for target "armadillo".
CMake Error: CMake can not determine linker language for target: armadillo
-- Generating done
-- Build files have been written to: /home/liu/P/homogenization
Can anyone help me about this issue about add library?
Many thanks in advance!
--
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