Add GitHub CI on Windows

.github/workflows/nob.yaml

@@ -23,3 +23,22 @@ jobs:
         run: ${{ matrix.cc }} -o nob nob.c
       - name: Run nob
         run: ./nob
+  windows:
+    runs-on: windows-latest
+    steps:
+      - name: Clone GIT repo
+        uses: actions/checkout@v4
+      - name: Build nob
+        shell: cmd
+        # cl.exe isn't available as-is in Github images because they don't want
+        # to, so we need to pull env vars ourselves. Refs:
+        # https://github.com/actions/runner-images/issues/6205#issuecomment-1241573412
+        # https://learn.microsoft.com/en-us/cpp/build/building-on-the-command-line?view=msvc-170#create-your-own-command-prompt-shortcut
+        run: |
+          call "C:\\Program Files\\Microsoft Visual Studio\\2022\\Enterprise\\VC\\Auxiliary\\Build\\vcvars64.bat"
+          cl.exe ${{ matrix.hotreload }} -o nob.exe nob.c
+      - name: Run nob
+        shell: cmd
+        run: |
+          call "C:\\Program Files\\Microsoft Visual Studio\\2022\\Enterprise\\VC\\Auxiliary\\Build\\vcvars64.bat"
+          nob.exe

nob.c

@@ -19,8 +19,7 @@ bool build_and_run_test(Cmd *cmd, const char *test_name)
 {
     const char *bin_path = temp_sprintf("%s%s", BUILD_FOLDER TESTS_FOLDER, test_name);
     const char *src_path = temp_sprintf("%s%s.c", TESTS_FOLDER, test_name);
-    cmd_append(cmd, "cc", "-Wall", "-Wextra", "-Wswitch-enum", "-I.", "-o", bin_path, src_path);
-    if (!cmd_run_sync_and_reset(cmd)) return false;
+    if (!build_exec(cmd, bin_path, src_path)) return false;
     cmd_append(cmd, bin_path);
     if (!cmd_run_sync_and_reset(cmd)) return false;
     nob_log(INFO, "--- %s finished ---", bin_path);

shared.h

@@ -7,15 +7,23 @@
 #define TESTS_FOLDER "tests/"
 #define TOOLS_FOLDER "tools/"
 
+bool build_exec(Cmd *cmd, const char *bin_path, const char *src_path)
+{
+#ifdef _MSC_VER
+    cmd_append(cmd, "cl", "-I.", "-o", bin_path, src_path);
+#else
+    cmd_append(cmd, "cc", "-Wall", "-Wextra", "-Wswitch-enum", "-I.", "-o", bin_path, src_path);
+#endif //  _MSC_VER
+    return cmd_run_sync_and_reset(cmd);
+}
+
 // Tests are allowed to build the tools they may need for their testing
 // The tools are single C files residing in TOOLS_FOLDER
 bool build_tool(Cmd *cmd, const char *tool_name)
 {
     const char *tool_src = temp_sprintf("%s%s.c", TOOLS_FOLDER, tool_name);
     const char *tool_bin = temp_sprintf("%s%s", BUILD_FOLDER TOOLS_FOLDER, tool_name);
-    cmd_append(cmd, "cc", "-Wall", "-Wextra", "-Wswitch-enum", "-I.", "-o", tool_bin, tool_src);
-    if (!cmd_run_sync_and_reset(cmd)) return false;
-    return true;
+    return build_exec(cmd, tool_bin, tool_src);
 }
 
 #endif // SHARED_H_