c++ - CMake: Visual Studio Project Created Using OBJECT Library Feature -

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i'm using cmake create have following visual studio solution layout:

solution       + project1 (c)       + project2 (fortran)

the goal create c wrapper (project1) around fortran routines (project2) combined single shared library. so, need link .obj file produced in fortran project produced in c project. possible using object library feature (introduced in cmake 2.8.8). detailed here

project1 creates shared library , project2 creates .obj file.

in cmakelists.txt of project1 use:

add_library(lib1${lib1_src} $<target_objects:lib2>)

in cmakelists.txt of project2 use:

add_library(lib2 object ${lib2_src})

in cmakelists.txt of solution use:

cmake_minimum_required(version 2.8.8)  project (test)  enable_language (c) enable_language (fortran)  set(cmake_runtime_output_directory ${cmake_binary_dir}/bin) set(cmake_library_output_directory ${cmake_binary_dir}/lib) set(cmake_archive_output_directory ${cmake_binary_dir}/lib)  include_directories(project1) include_directories(project2)  add_subdirectory(project1)  add_subdirectory(project2)`

the issue i'm having has do c project produced cmake. specifically, runtime library setting under properties --> configuration properties --> c/c++ --> code generation defaulted multi-threaded dll regardless of solution configuration current set (debug | release).

improper configuration

the issue seems related use of $<target_objects:objlib> expression since removing result in creation of c project configures runtime library based on solution configuration.

proper configuration

anyone know why happening , how can modify cmake files correct it?

i able resolve problem adding 3rd project aggregates .obj files shared library.

solution       + project1 (c)       + project2 (fortran)     + project3 (sharedlib)

in cmakelists.txt of project1 use:

add_library(lib1 object ${lib1_src})

in cmakelists.txt of project2 use:

add_library(lib2 object ${lib2_src})

in cmakelists.txt of project3 use:

add_library(libname shared $<target_objects:project1> $<target_objects:project2>)

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