diff --git a/.github/workflows/build-test.yml b/.github/workflows/build-test.yml
index db25a0b..240b7cb 100644
--- a/.github/workflows/build-test.yml
+++ b/.github/workflows/build-test.yml
@@ -9,16 +9,18 @@ on:
 jobs:
   build:
     runs-on: ubuntu-latest
-
+    env:
+      CMAKE_BUILD_TYPE: Debug
+      BUILD_DIR: ${{github.workspace}}/build
     steps:
     - uses: actions/checkout@v3
 
     - name: Configure CMake
-      run: cmake -B ${{github.workspace}}/build -DCMAKE_BUILD_TYPE=Debug -DTESTING=ON
+      run: cmake -B "$BUILD_DIR"
 
     - name: Build
-      run: cmake --build ${{github.workspace}}/build
+      run: cmake --build "$BUILD_DIR" --config $CMAKE_BUILD_TYPE
 
     - name: Test
       working-directory: ${{github.workspace}}/build
-      run: ctest
+      run: ctest --config $CMAKE_BUILD_TYPE --output-on-failure
diff --git a/.gitignore b/.gitignore
index 7ec5089..a8d858e 100644
--- a/.gitignore
+++ b/.gitignore
@@ -2,4 +2,5 @@
 /win-build
 /.idea
 /build
+/build-*
 /cmake-build*
diff --git a/CMakeLists.txt b/CMakeLists.txt
index b0bb4fa..c90a5d0 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -1,13 +1,14 @@
-cmake_minimum_required(VERSION 3.22)
-option(TESTING "Enables unit testing" OFF)
+cmake_minimum_required(VERSION 3.15)
 
 project(ULS CXX)
 set(CMAKE_CXX_STANDARD 20)
 set(CMAKE_CXX_STANDARD_REQUIRED ON)
 set(CMAKE_CXX_EXTENSIONS OFF)
 set(CMAKE_POSITION_INDEPENDENT_CODE ON)
+set(CMAKE_EXPORT_COMPILE_COMMANDS ON)
 
 option(ULS_WITH_TESTS "ULS Unit Tests" ON)
+option(ULS_WITH_WERROR "Enable warnings as errors" ON)
 
 #Hack used to force UTAP to compile statically
 set(BUILD_SHARED_LIBS OFF)
@@ -16,6 +17,16 @@ set(BUILD_SHARED_LIBS OFF)
 include(cmake/utap.cmake)
 include(cmake/nlohmann.cmake)
 
+if ("${CMAKE_CXX_COMPILER_ID}" MATCHES "GNU|Clang")
+  add_compile_options(-Wpedantic -Wall -Wextra)
+  if (ULS_WITH_WERROR)
+    add_compile_options(-Werror)
+  endif(ULS_WITH_WERROR)
+elseif ("${CMAKE_CXX_COMPILER_ID}" MATCHES "MSVC")
+  add_compile_options(/W4)
+endif()
+
+
 add_subdirectory(src)
 
 if (ULS_WITH_TESTS)
diff --git a/README.md b/README.md
index ba78609..1945880 100644
--- a/README.md
+++ b/README.md
@@ -2,16 +2,23 @@
 This is the UPPAAL language server or ULS for short
 
 ### Building
-`cmake -B build`  
-`cmake --build build`
+```shell
+cmake -B build  
+cmake --build build
+```
 
-### Windows crosscompilation
-Install x86_64-w64-mingw32 gcc compiler and run with toolchain file  
-`cmake -B build -DCMAKE_TOOLCHAIN_FILE=toolchains/mingw-w64_toolchain.cmake`
+### Windows Cross-Compilation
+Install `x86_64-w64-mingw32` GCC cross-compiler and run with toolchain file:
+```shell
+cmake -B build -DCMAKE_TOOLCHAIN_FILE=toolchains/x86_64-w64-mingw32.cmake
+cmake --build build
+```
+
+See `compile.sh` for other build options.
 
 ### Dependencies
 This project uses the following libraries under licenses:
 
-UTAP            ---     https://github.com/UPPAALModelChecker/utap  
+UTAP            UPPAAL  https://github.com/UPPAALModelChecker/utap  
 nlohmann json   MIT     https://github.com/nlohmann/json  
 doctest         MIT     https://github.com/doctest/doctest
diff --git a/compile.sh b/compile.sh
new file mode 100755
index 0000000..b165f9c
--- /dev/null
+++ b/compile.sh
@@ -0,0 +1,36 @@
+#!/usr/bin/env bash
+set -e
+
+PROJECT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
+TOOLCHAIN_FILE="$CMAKE_TOOLCHAIN_FILE"
+BUILD_TYPE="$CMAKE_BUILD_TYPE"
+
+if [ "$#" == 0 ]; then
+  echo "Script $0 compiles the project for specific targets specified as arguments."
+  echo "The following targets are supported:"
+  for f in "$PROJECT_DIR"/toolchains/*.cmake ; do
+    target=$(basename "$f")
+    target=${target%.cmake}
+    echo -n "  $target"
+  done
+  echo ""
+  echo "The script is sensitive to CMAKE_BUILD_TYPE and CMAKE_TOOLCHAIN_FILE."
+  exit 1
+fi
+
+for target in "$@" ; do
+  if [ -z "$TOOLCHAIN_FILE" ]; then
+    if [ -r "$PROJECT_DIR/toolchains/$target.cmake" ]; then
+      export CMAKE_TOOLCHAIN_FILE="$PROJECT_DIR/toolchains/$target.cmake"
+    else
+      unset CMAKE_TOOLCHAIN_FILE
+    fi
+  fi
+  if [ -z "$BUILD_TYPE" ]; then
+    export CMAKE_BUILD_TYPE=Debug
+  fi
+  BUILD_DIR="build-$target-${CMAKE_BUILD_TYPE,,}"
+  cmake -B "$BUILD_DIR" -S "$PROJECT_DIR"
+  cmake --build "$BUILD_DIR" --config $CMAKE_BUILD_TYPE
+  ctest --test-dir "$BUILD_DIR" --config $CMAKE_BUILD_TYPE --output-on-failure
+done
diff --git a/src/CMakeLists.txt b/src/CMakeLists.txt
index 31bf00d..864c613 100644
--- a/src/CMakeLists.txt
+++ b/src/CMakeLists.txt
@@ -1,5 +1,3 @@
-add_compile_options(-Wpedantic -Wall -Wextra -Werror)
-
 add_library(uls_lib OBJECT server.cpp highlight.cpp system.cpp utap_extension.cpp declarations.cpp renaming.cpp common_data.cpp autocomplete.cpp)
 target_link_libraries(uls_lib PUBLIC UTAP nlohmann_json::nlohmann_json)
 target_include_directories(uls_lib PUBLIC "${CMAKE_SOURCE_DIR}/include/")
@@ -7,4 +5,4 @@ target_include_directories(uls_lib PUBLIC "${CMAKE_SOURCE_DIR}/include/")
 add_executable(uls main.cpp)
 target_link_libraries(uls PRIVATE uls_lib)
 
-install(TARGETS uls RUNTIME)
\ No newline at end of file
+install(TARGETS uls RUNTIME)
diff --git a/src/server.cpp b/src/server.cpp
index 449164e..b09d984 100644
--- a/src/server.cpp
+++ b/src/server.cpp
@@ -12,13 +12,12 @@ using json = nlohmann::json;
 nlohmann::json OK_RESPONSE = {{"res", "OK"}};
 nlohmann::json FAIL_RESPONSE = {{"res", "FAIL"}};
 
-const Command& get_command(const std::vector<Command>& commands, const std::string& command_name)
+std::vector<Command>::const_iterator find_command(const std::vector<Command>& commands, const std::string& name)
 {
-    for (const auto& command : commands) {
-        if (command.name == command_name)
-            return command;
-    }
-    throw std::invalid_argument("Unknown command name " + command_name);
+    auto it = std::find_if(commands.begin(), commands.end(), [&name](const Command& cmd) { return cmd.name == name; });
+    if (it == commands.end())
+        throw std::invalid_argument("Unknown command " + name);
+    return it;
 }
 
 void Server::start()
@@ -31,10 +30,9 @@ void Server::start()
     while (is_running) {
         try {
             io.in >> message;
-
-            const Command& command = get_command(commands, message["cmd"].get<std::string>());
-            auto response = command.callback(message["args"]);
-            send("response/" + command.name, response);
+            auto cmd = find_command(commands, message["cmd"].get<std::string>());
+            auto response = cmd->callback(message["args"]);
+            send("response/" + cmd->name, response);
         } catch (nlohmann::json::parse_error& e) {
             send("error", e.what());
             stop();
diff --git a/toolchains/clang.cmake b/toolchains/clang.cmake
new file mode 100644
index 0000000..ab5e0c3
--- /dev/null
+++ b/toolchains/clang.cmake
@@ -0,0 +1,12 @@
+# which tools to use
+set(CMAKE_C_COMPILER   clang)
+set(CMAKE_CXX_COMPILER clang++)
+
+# adjust the default behavior of the FIND_XXX() commands:
+
+# search programs in the host environment
+set(CMAKE_FIND_ROOT_PATH_MODE_PROGRAM NEVER)
+
+# search headers and libraries in the target environment
+set(CMAKE_FIND_ROOT_PATH_MODE_LIBRARY ONLY)
+set(CMAKE_FIND_ROOT_PATH_MODE_INCLUDE ONLY)
diff --git a/toolchains/gcc10.cmake b/toolchains/gcc10.cmake
new file mode 100644
index 0000000..21c85da
--- /dev/null
+++ b/toolchains/gcc10.cmake
@@ -0,0 +1,12 @@
+# which tools to use
+set(CMAKE_C_COMPILER   gcc-10)
+set(CMAKE_CXX_COMPILER g++-10)
+
+# adjust the default behavior of the FIND_XXX() commands:
+
+# search programs in the host environment
+set(CMAKE_FIND_ROOT_PATH_MODE_PROGRAM NEVER)
+
+# search headers and libraries in the target environment
+set(CMAKE_FIND_ROOT_PATH_MODE_LIBRARY ONLY)
+set(CMAKE_FIND_ROOT_PATH_MODE_INCLUDE ONLY)
diff --git a/toolchains/gcc11.cmake b/toolchains/gcc11.cmake
new file mode 100644
index 0000000..f26814a
--- /dev/null
+++ b/toolchains/gcc11.cmake
@@ -0,0 +1,12 @@
+# which tools to use
+set(CMAKE_C_COMPILER   gcc-11)
+set(CMAKE_CXX_COMPILER g++-11)
+
+# adjust the default behavior of the FIND_XXX() commands:
+
+# search programs in the host environment
+set(CMAKE_FIND_ROOT_PATH_MODE_PROGRAM NEVER)
+
+# search headers and libraries in the target environment
+set(CMAKE_FIND_ROOT_PATH_MODE_LIBRARY ONLY)
+set(CMAKE_FIND_ROOT_PATH_MODE_INCLUDE ONLY)
diff --git a/toolchains/gcc12.cmake b/toolchains/gcc12.cmake
new file mode 100644
index 0000000..a9072cd
--- /dev/null
+++ b/toolchains/gcc12.cmake
@@ -0,0 +1,12 @@
+# which tools to use
+set(CMAKE_C_COMPILER   gcc-12)
+set(CMAKE_CXX_COMPILER g++-12)
+
+# adjust the default behavior of the FIND_XXX() commands:
+
+# search programs in the host environment
+set(CMAKE_FIND_ROOT_PATH_MODE_PROGRAM NEVER)
+
+# search headers and libraries in the target environment
+set(CMAKE_FIND_ROOT_PATH_MODE_LIBRARY ONLY)
+set(CMAKE_FIND_ROOT_PATH_MODE_INCLUDE ONLY)
diff --git a/toolchains/gcc13.cmake b/toolchains/gcc13.cmake
new file mode 100644
index 0000000..c0cea3a
--- /dev/null
+++ b/toolchains/gcc13.cmake
@@ -0,0 +1,12 @@
+# which tools to use
+set(CMAKE_C_COMPILER   gcc-13)
+set(CMAKE_CXX_COMPILER g++-13)
+
+# adjust the default behavior of the FIND_XXX() commands:
+
+# search programs in the host environment
+set(CMAKE_FIND_ROOT_PATH_MODE_PROGRAM NEVER)
+
+# search headers and libraries in the target environment
+set(CMAKE_FIND_ROOT_PATH_MODE_LIBRARY ONLY)
+set(CMAKE_FIND_ROOT_PATH_MODE_INCLUDE ONLY)
diff --git a/toolchains/mingw-w64_toolchain.cmake b/toolchains/x86_64-w64-mingw32.cmake
similarity index 75%
rename from toolchains/mingw-w64_toolchain.cmake
rename to toolchains/x86_64-w64-mingw32.cmake
index 9989421..681af80 100644
--- a/toolchains/mingw-w64_toolchain.cmake
+++ b/toolchains/x86_64-w64-mingw32.cmake
@@ -4,15 +4,12 @@
 set(CMAKE_SYSTEM_NAME Windows)
 
 # which tools to use
-set(CMAKE_C_COMPILER   /usr/bin/x86_64-w64-mingw32-gcc)
-set(CMAKE_CXX_COMPILER /usr/bin/x86_64-w64-mingw32-g++)
+set(CMAKE_C_COMPILER   x86_64-w64-mingw32-gcc)
+set(CMAKE_CXX_COMPILER x86_64-w64-mingw32-g++)
 
 add_compile_options(-static)
 add_link_options(-static)
 
-# here is where the target environment located
-set(CMAKE_FIND_ROOT_PATH  /usr/x86_64-w64-mingw32)
-
 # adjust the default behavior of the FIND_XXX() commands:
 
 # search programs in the host environment
@@ -28,4 +25,4 @@ set(CMAKE_INSTALL_PREFIX ${CMAKE_FIND_ROOT_PATH}/usr CACHE FILEPATH
 # initialize required linker flags
 set(CMAKE_EXE_LINKER_FLAGS_INIT "-static-libgcc -static-libstdc++")
 
-# end of toolchain file
\ No newline at end of file
+# end of toolchain file