moved cli11 dependency to meson wrap package

meson.build

@@ -7,7 +7,6 @@ project('ptprnt', 'cpp',
 usb_dep = dependency('libusb-1.0')
 log_dep = dependency('spdlog')
 pangocairo_dep = dependency('pangocairo')
-cli11_dep = dependency('CLI11')
 
 incdir = include_directories('src')
 
@@ -45,17 +44,25 @@ ptprnt_lib = library('ptprnt',
 ptprnt_dep = declare_dependency(include_directories: incdir,
                                 link_with: ptprnt_lib)
 
+# CLI11 
+cli11_proj = subproject('cli11')
+cli11_dep = cli11_proj.get_variable('CLI11_dep')
+if not cli11_dep.found()
+    error('CLI11 not found, can not proceed')
+endif
+
 ptprnt_exe = executable(
     'ptprnt', 
     'src/main.cpp',
     install: true,
-    dependencies : [usb_dep, log_dep, ptprnt_dep, cli11_dep],
+    dependencies : [usb_dep, log_dep, ptprnt_dep, ],
     cpp_args : ['-DPROJ_VERSION="'+meson.project_version()+'"'],
 )
 
 
+### Unit tests
 
-#cmake = import('cmake')
+# GTest
 gtest_proj = subproject('gtest')
 gtest_dep = gtest_proj.get_variable('gtest_main_dep')
 if not gtest_dep.found()