diff --git a/.gitignore b/.gitignore
index a0d3cab..9287d31 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,4 +1,5 @@
 bin
 compile_commands.json
 .clangd
-temp.*
\ No newline at end of file
+temp.*
+.vs
\ No newline at end of file
diff --git a/README.md b/README.md
index a475820..f7709a6 100644
--- a/README.md
+++ b/README.md
@@ -50,6 +50,7 @@ type = "exe" # required (exe || shared || static)
 sources = ["src/main.cpp", "src/args.cpp", "src/gen.cpp"] # required
 include_directories = ["vendor"] # optional
 compile_features = ["cxx_std_17"] # optional
+# definitions = [] # optional
 # link_libraries = [] # optional 
 ```
 
@@ -59,13 +60,13 @@ Usage: cmkr [arguments]
 arguments:
     init     [exe|shared|static]    Starts a new project in the same directory.
     gen                             Generates CMakeLists.txt file.
-    build    [cmake args...]        Run cmake and build.
+    build    [extra cmake args]     Run cmake and build.
     help                            Show help.
     version                         Current cmkr version.
 ```
 The build command invokes cmake and the default build-system on your platform, it also accepts extra cmake arguments:
 ```
-cmkr build -DCMAKE_TOOLCHAIN_FILE=/path/to/toolchain -DCMAKE_BUILD_TYPE=Release 
+cmkr build -GNinja -DCMAKE_TOOLCHAIN_FILE=/path/to/toolchain -DCMAKE_BUILD_TYPE=Release 
 ```
 
 ## Roadmap
diff --git a/cmake.toml b/cmake.toml
index c662dac..7c06070 100644
--- a/cmake.toml
+++ b/cmake.toml
@@ -18,5 +18,6 @@ type = "exe" # required (exe || shared || static)
 sources = ["src/main.cpp", "src/args.cpp", "src/gen.cpp"] # required
 include_directories = ["vendor"] # optional
 compile_features = ["cxx_std_17"] # optional
+# definitions = [] # optional
 # link_libraries = [] # optional 
 
diff --git a/src/gen.cpp b/src/gen.cpp
index 15aae78..3572acc 100644
--- a/src/gen.cpp
+++ b/src/gen.cpp
@@ -167,6 +167,7 @@ void generate_cmake() {
                 }
                 ss << ")\n\n";
             }
+
             if (bin.contains("link_libraries")) {
                 const auto libraries = toml::find(bin, "link_libraries").as_array();
                 ss << "target_link_libraries(" << bin_name << " PUBLIC\n\t";
@@ -175,6 +176,7 @@ void generate_cmake() {
                 }
                 ss << ")\n\n";
             }
+
             if (bin.contains("compile_features")) {
                 const auto feats = toml::find(bin, "compile_features").as_array();
                 ss << "target_compile_features(" << bin_name << " PUBLIC\n\t";
@@ -183,6 +185,15 @@ void generate_cmake() {
                 }
                 ss << ")\n\n";
             }
+
+            if (bin.contains("definitions")) {
+                const auto defs = toml::find(bin, "definitions").as_array();
+                ss << "target_add_definitions(" << bin_name << " PUBLIC\n\t";
+                for (const auto &def : defs) {
+                    ss << def << "\n\t";
+                }
+                ss << ")\n\n";
+            }
         }
     }