CMake - Linked libraries not showing under MSVC

Question

Here is the project tree : It's a static library that uses another static library

Static_lib/
    |
    ----src/
        |----src1.cpp
        |----src2.cpp
    ----inc/
        |----head1.h
        |----head2.h
    ----Static_lib2/
        |----lib/
            |----32/
                |Debug/
                    lib2.lib
                |Release/
                    lib2.lib
            |----64/
                |Debug/
                    lib2.lib
                |Release/
                    lib2.lib
        |----include/
            |bunch of headers
    ----build/
    ----CMakeLists.txt

Here is my CMakeLists.txt :

cmake_minimum_required(VERSION 3.5.1)
project(Static_lib)

set(SOURCE_FILES src/src1.cpp src/src2.cpp)
set(HEADER_FILES inc/head1.h inc/head2.h)

add_library(Static_lib STATIC ${SOURCE_FILES} ${HEADER_FILES})

target_include_directories(Static_lib PUBLIC 
    ${CMAKE_SOURCE_DIR}/inc 
    ${CMAKE_SOURCE_DIR}/Static_lib2/include
)

if(CMAKE_SYSTEM_NAME STREQUAL Linux)

    if(CMAKE_SIZEOF_VOID_P EQUAL 8)
        set_property(GLOBAL PROPERTY FIND_LIBRARY_USE_LIB32_PATHS FALSE)
    else(CMAKE_SIZEOF_VOID_P EQUAL 8)
        set_property(GLOBAL PROPERTY FIND_LIBRARY_USE_LIB32_PATHS TRUE)
    endif(CMAKE_SIZEOF_VOID_P EQUAL 8)

    find_library(STATIC_LIB2 libcrypto.a)
    target_link_libraries(Static_lib "${STATIC_LIB2}")

elseif(CMAKE_SYSTEM_NAME STREQUAL Windows)

    if(CMAKE_SIZEOF_VOID_P EQUAL 8)
        target_link_libraries(Static_lib debug ${CMAKE_SOURCE_DIR}/Static_lib2/lib/64/Debug/lib2.lib)

        target_link_libraries(Static_lib optimized ${CMAKE_SOURCE_DIR}/Static_lib2/lib/64/Release/lib2.lib)

    else(CMAKE_SIZEOF_VOID_P EQUAL 8)
        target_link_libraries(Static_lib debug ${CMAKE_SOURCE_DIR}/Static_lib2/lib/32/Debug/lib2.lib)

        target_link_libraries(Static_lib optimized ${CMAKE_SOURCE_DIR}/Static_lib2/lib/32/Release/lib2.lib)

    endif(CMAKE_SIZEOF_VOID_P EQUAL 8)

endif(CMAKE_SYSTEM_NAME STREQUAL Linux)

When I create the project using Visual studio generator, the project is created with no error or warning, however there are no dependencies and no libraries in the project properties.

After building, I get a library that doesn't actually have the size it is supposed to have.

Can someone give some insight? Maybe my CMakeLists code is wrong?

Thanks in advance!

First thing when debug missed linked - make sure, that corresponded **code is actually executed**. As all `target_link_libraries` calls are under *conditional* branches, check that appropriate branch is actually processed. E.g., you may add `message()` calls into it. — Tsyvarev, Apr 28 '17 at 21:04
Thank you for answer. I had a couple of mistakes, like misusing NOT operator. I used MESSAGE and the correspending code is actually now executed. However, even after correcting all the mistakes, MSVC still doesn't link the appropriate libraries. — El Mostafa IDRASSI, Apr 29 '17 at 14:17

score 0 · Accepted Answer · edited May 23 '17 at 11:46

0

I just found the answer here cmake: include library dependencies in static lib

By default, static libraries are not combined together. Doing it manually is the way to go.

edited May 23 '17 at 11:46

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answered Apr 29 '17 at 14:51

El Mostafa IDRASSI

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CMake - Linked libraries not showing under MSVC

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