CODEWITHSUNDEEP
cmake
Antonio Sesto
Antonio Sesto

Reputation: 3184

CMake - User libraries

Let's suppose I have a project organized as follows:

Proj/src
Proj/src/library_a
Proj/src/library_b
Proj/src/executable

What I would like to do is to collect the names of the libraries contained in src/library_a and src/library_b in a variable Proj_LIBS to be propagated up to the root of the CMake tree.

In the file src/library_a/CMakeLists.txt, I add all of the names of the targets to the variable Proj_LIBS, then I use this variable in the CMakeLists.txt file in folder src/executable.

The Proj/src/library_a/CMakeLists.txt is

add_library(A1 A1.cpp)
add_library(A2 A2.cpp)
SET(Curr_LIBS "${Proj_LIBS} A1 A2")
SET(Proj_LIBS ${Curr_LIBS} PARENT_SCOPE)

When I try to produce the executable with Proj/src/executable/CMakeLists.txt:

add_executable(exe1 exe1.cpp)
target_link_libraries(exe1 ${Proj_LIBS})

the names in Proj_LIBS are interpreted as library names, i.e, the compilation command prepared by CMake is:

gcc exe1.cpp -l A1 -l A2 -o exe1

and are not considered as dependencies as they are if I write the following lines in Proj/src/executable/CMakeLists.txt:

add_executable(exe1 exe1.cpp)
target_link_libraries(exe1 A1 A2)

Any suggestion?

Upvotes: 0

Views: 116

Answers (1)

arrowd
arrowd

Reputation: 34421

I bet the problem is using string instead of a list. Try this:

SET(Curr_LIBS "${Proj_LIBS};A1;A2")
SET(Proj_LIBS ${Curr_LIBS} PARENT_SCOPE)

Upvotes: 1

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