Generating Executable Files
Assuming we only have a .cc file.
-
Create a CMakeLists.txt file in the root directory.
cmake_minimum_required(VERSION 2.8)
project(app_project)
add_executable(hello main.cc)
install(TARGETS hello DESTINATION bin)
To execute, see the content after ->. First create a build directory, then compile and install, and finally it will be installed to /usr/local/bin/hello. The bin can also be replaced with your own directory.
➜ mkdir build
➜ cd build
➜ cmake ..
-- The C compiler identification is AppleClang 12.0.5.12050022
-- The CXX compiler identification is AppleClang 12.0.5.12050022
-- Detecting C compiler ABI info
-- Detecting C compiler ABI info - done
-- Check for working C compiler: /Library/Developer/CommandLineTools/usr/bin/cc - skipped
-- Detecting C compile features
-- Detecting C compile features - done
-- Detecting CXX compiler ABI info
-- Detecting CXX compiler ABI info - done
-- Check for working CXX compiler: /Library/Developer/CommandLineTools/usr/bin/c++ - skipped
-- Detecting CXX compile features
-- Detecting CXX compile features - done
-- Configuring done
-- Generating done
-- Build files have been written to: /cmake/build
➜ make
[ 50%] Building CXX object CMakeFiles/hello.dir/main.cc.o
[100%] Linking CXX executable hello
[100%] Built target hello
➜ make install
Consolidate compiler generated dependencies of target hello
[100%] Built target hello
Install the project...
-- Install configuration: ""
-- Installing: /usr/local/bin/hello
Finally execute:
➜ /usr/local/bin/hello
hello world
Next, we will break down the above content:
Step 1: cmake ..
Generate Makefile
Step 2: make
Compile the Makefile to generate the bin file
Step 3: make install
Install to the specified directory
