eliminate sit submodules

Author: NikolasK-source

.gitmodules

@@ -1,12 +0,0 @@
-[submodule "libs/cxxopts"]
-	path = libs/cxxopts
-    url = https://github.com/NikolasK-source/cxxopts.git
-[submodule "libs/libmodbus"]
-	path = libs/libmodbus
-	url = https://github.com/stephane/libmodbus
-[submodule "libs/cxxshm"]
-	path = libs/cxxshm
-	url = https://github.com/NikolasK-source/cxxshm.git
-[submodule "libs/cxxsemaphore"]
-	path = libs/cxxsemaphore
-	url = https://github.com/NikolasK-source/cxxsemaphore.git

libs/CMakeLists.txt

@@ -1,17 +1,20 @@
+# ---------------------------------------- packages --------------------------------------------------------------------
+# ======================================================================================================================
+find_package(cxxshm REQUIRED)
+find_package(cxxsemaphore REQUIRED)
+find_package(cxxopts REQUIRED)
+
+# ---------------------------------------- external libs ---------------------------------------------------------------
+# ======================================================================================================================
+find_library(modbus_library modbus)
 
 # ---------------------------------------- subdirectories --------------------------------------------------------------
 # ======================================================================================================================
-include(../modbus.cmake)
-add_subdirectory(cxxopts EXCLUDE_FROM_ALL)
-add_subdirectory(cxxshm EXCLUDE_FROM_ALL)
-add_subdirectory(cxxsemaphore EXCLUDE_FROM_ALL)
 
 # ---------------------------------------- link libraries --------------------------------------------------------------
 # ======================================================================================================================
-target_link_libraries(${Target} PRIVATE modbus)
+target_link_libraries(${Target} PRIVATE ${modbus_library})
 target_link_libraries(${Target} PRIVATE rt)
-target_link_libraries(${Target} PRIVATE cxxopts)
+target_link_libraries(${Target} PRIVATE INTERFACE cxxopts)
 target_link_libraries(${Target} PRIVATE cxxshm)
 target_link_libraries(${Target} PRIVATE cxxsemaphore)
-
-

libs/cxxopts

@@ -151,7 +151,7 @@ int main(int argc, char **argv) {
     cxxopts::ParseResult args;
     try {
         args = options.parse(argc, argv);
-    } catch (cxxopts::OptionParseException &e) {
+    } catch (cxxopts::exceptions::parsing::exception &e) {
         std::cerr << Print_Time::iso << " ERROR: Failed to parse arguments: " << e.what() << ".'\n";
         return exit_usage();
     }
@@ -335,7 +335,7 @@ int main(int argc, char **argv) {
     } catch (const std::runtime_error &e) {
         std::cerr << e.what() << std::endl;
         return EX_SOFTWARE;
-    } catch (cxxopts::option_has_no_value_exception &e) {
+    } catch (cxxopts::exceptions::option_has_no_value::exception &e) {
         std::cerr << e.what() << std::endl;
         return exit_usage();
     }