CODEWITHSUNDEEP
gitcmakeexternal-project
user3841904
user3841904

Reputation: 71

CMake ExternalProject_Add Git

I have a git-bare-repository on my desktop and I would like to clone it with CMake. My repository has this path C:\Users\demoUser\Desktop\learnGIT\prog. My CMakeLists.txt looks like this:

cmake_minimum_required(VERSION 2.8)
project(Demo)
include(ExternalProject)

ExternalProject_Add(demo
  GIT_REPOSITORY C:/Users/demoUser/Desktop/learnGIT/prog
  GIT_TAG master
  UPDATE_COMMAND ""
  INSTALL_COMMAND ""
)

but in the generated folder prog-build is just wast. The generated folder structure doesn't include any of my files from the repository.

Does somebody has an idea?

Upvotes: 7

Views: 12296

Answers (3)

Chris
Chris

Reputation: 2351

You'll find a complete example in this ANSWER.

When you add external projects (via git) it's sometimes important to have these dependent projects fetched (and build) before the building of the main part of your project starts.

You can achieve this by adding the option STEP_TARGETS build to your ExternalProject_Add section. See the ANSWER.

Upvotes: 0

Oleg
Oleg

Reputation: 506

  1. You have to have a target in your project that depends on external project

    add_dependencies(TargetName ExternalProjectName)

  2. The git clone happens on TargetName build (not on CMake reload)

Upvotes: 6

Ramy Gad
Ramy Gad

Reputation: 61

you have to tell cmake that it needs "demo" to build your target. In this way you force cmake to download the external project "demo" before compiling.

for example

set(SRC ${PROJECT_SOURCE_DIR}/src/main.cpp 
    ${PROJECT_SOURCE_DIR}/src/file1.cpp)  
    add_executable(Demobin ${SRC})  
    add_dependencies(Demobin demo)

Upvotes: 0

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