meson: cleanup version detection

Tell Meson what version the project is, so that we set the right versioning
on libnethogs.

meson.build

@@ -5,11 +5,11 @@
 project('nethogs',
         ['c', 'cpp'],
         default_options : ['warning_level=3',
-                           'cpp_std=c++14']
+                           'cpp_std=c++14'],
+        version : run_command('./determineVersion.sh').stdout().strip(),
         )
 
 cc = meson.get_compiler('cpp')
-version = run_command('./determineVersion.sh', check: true).stdout().strip()
 
 #######################################
 ## Dependencies and flags definition ##
@@ -19,7 +19,7 @@ projectinc = [include_directories('.', 'src')]
 
 # flags
 c_args = [
-  '-DVERSION="' + version + '"'
+  '-DVERSION="' + meson.project_version() + '"'
 ]
 
 # dependencies
@@ -42,5 +42,5 @@ pkgconfig = import('pkgconfig')
 pkgconfig_install_dir = join_paths(get_option('libdir'), 'pkgconfig')
 pkgconfig.generate(libnethogs,
                    requires: ['libpcap'],
-                   version: version
+                   version: meson.project_version()
                    )