How to control subdirectory compiling order of cmake?

compilation cmake subdirectory
Yun Wen picture Yun Wen · Sep 25, 2015 · Viewed 11.3k times · Source

This is my CMakeLists.txt:

ADD_SUBDIRECTORY(third)
ADD_SUBDIRECTORY(utils)
ADD_SUBDIRECTORY(rpc)

But the directory 'rpc' will be compiled before directory 'utils', actually the 'rpc' is depends on 'utils', so I will get a link error.

How can I make the 'rpc' compiling after 'utils'?

Thanks.

Answer

arrowd picture arrowd · Sep 25, 2015

When you use target_link_libraries() function and pass it other target name, CMake automatically sets this target as a dependency. You can also use add_dependencies() to specify dependencies manually.

Also note that order of sources compilation have nothing to do with your problem. Link errors (i guess, you are seeing "undefined reference" ones) are because you aren't linking your targets properly.

Related questions

How to create a shared library with cmake?

I have written a library that I used to compile using a self-written Makefile, but now I want to switch to cmake. The tree looks like this (I removed all the irrelevant files): . ├── include │   ├── animation.h │   ├── buffers.h │   ├── ... │   ├── vertex.h │   └── …

Read More
Compiling a static executable with CMake

for a project I need to create an executable that includes all the libraries that I used (opencv, cgal) in order to execute it on a computer that has not those libraries. Currently, this is my CMakeLists.txt (I use …

Read More
Compiling OpenCV 3.3 : C++11 is not supported

I'm trying to compile the new version of OpenCV 3.3 (released on Aug 3, 2017) but I'm getting an error of C++11 This is my cmake command line: cmake -D CMAKE_BUILD_TYPE=RELEASE \ -D CMAKE_INSTALL_PREFIX=/usr/local \ -D WITH_CUDA=…

Read More