Elektra
0.8.23
|
This basic tutorial shows you how to compile and run a very basic Elektra application. For this tutorial we assume that you installed Elektra and CMake on your machine. We also assume that you work a Unix based OS like Linux or macOS.
Hello
somewhere on your diskexamples/helloElektra.c
to the folder Hello
you just createdSave a file with the following content
```cmake cmake_minimum_required(VERSION 3.0)
find_package(Elektra REQUIRED)
if (ELEKTRA_FOUND) message (STATUS "Elektra ${ELEKTRA_VERSION} found") include_directories (${ELEKTRA_INCLUDE_DIR})
add_executable (hello helloElektra.c) target_link_libraries (hello ${ELEKTRA_LIBRARIES}) else (ELEKTRA_FOUND) message (FATAL_ERROR "Elektra not found") endif (ELEKTRA_FOUND) ```
as CMakeLists.txt
in the folder Hello
.
Hello
Create a build directory inside Hello
, change into the build directory, and run Cmake:
``` mkdir build cd build cmake .. ```
. If everything worked until now, then CMake should print messages that look something like this:
``` – The C compiler identification is AppleClang 8.1.0.8020042 – The CXX compiler identification is AppleClang 8.1.0.8020042 – Check for working C compiler: usr/bin/cc – Check for working C compiler: usr/bin/cc – works – Detecting C compiler ABI info – Detecting C compiler ABI info - done – Detecting C compile features – Detecting C compile features - done – Check for working CXX compiler: usr/bin/c++ – Check for working CXX compiler: usr/bin/c++ – works – Detecting CXX compiler ABI info – Detecting CXX compiler ABI info - done – Detecting CXX compile features – Detecting CXX compile features - done – Elektra 0.8.19 found – Configuring done – Generating done – Build files have been written to: Hello/build ```
No it’s time to build your application. For that step run make
inside the folder Hello/build
:
``` make ```
. If the last step completed successfully, then the build directory now contains the application hello
.
You can now run your Elektra application by calling ./hello
inside the build directory. The output of the application should look something like this:
``` Open key database Retrieve key set Number of mappings: 0 Add new key system/test/hello Number of mappings: 1
hello, elektra
Delete mappings Close key database ```
helloElektra.c
. If you want to compile and execute the updated code, then repeat steps 6 and 7.