diff --git a/common/nextpnr_assertions.h b/common/nextpnr_assertions.h
index 1dd2a58f..1989aa3a 100644
--- a/common/nextpnr_assertions.h
+++ b/common/nextpnr_assertions.h
@@ -56,6 +56,7 @@ inline void assert_fail_impl_str(std::string message, const char *expr_str, cons
 #define NPNR_ASSERT_FALSE(msg) (assert_fail_impl(msg, "false", __FILE__, __LINE__))
 #define NPNR_ASSERT_FALSE_STR(msg) (assert_fail_impl_str(msg, "false", __FILE__, __LINE__))
 
+#define NPNR_STRINGIFY_MACRO(x) NPNR_STRINGIFY(x)
 #define NPNR_STRINGIFY(x) #x
 
 NEXTPNR_NAMESPACE_END
diff --git a/gui/CMakeLists.txt b/gui/CMakeLists.txt
index 1deffcfb..110251b9 100644
--- a/gui/CMakeLists.txt
+++ b/gui/CMakeLists.txt
@@ -34,6 +34,7 @@ add_library(gui_${family} STATIC ${GUI_SOURCE_FILES} ${PYTHON_CONSOLE_SRC} ${GUI
 include(${family}/family.cmake)
 
 target_include_directories(gui_${family} PRIVATE ../${family} ${family} ../3rdparty/QtPropertyBrowser/src ../3rdparty/imgui ../3rdparty/qtimgui/)
+target_include_directories(gui_${family} PRIVATE ${CMAKE_BINARY_DIR}/generated)
 if (BUILD_PYTHON)
   target_include_directories(gui_${family} PRIVATE ../3rdparty/python-console ../3rdparty/python-console/modified)
 endif()
diff --git a/gui/basewindow.cc b/gui/basewindow.cc
index e93428cf..6e64bf6f 100644
--- a/gui/basewindow.cc
+++ b/gui/basewindow.cc
@@ -35,6 +35,7 @@
 #include "log.h"
 #include "mainwindow.h"
 #include "pythontab.h"
+#include "version.h"
 
 static void initBasenameResource() { Q_INIT_RESOURCE(base); }
 
@@ -129,6 +130,15 @@ void BaseMainWindow::closeTab(int index) { delete centralTabWidget->widget(index
 
 void BaseMainWindow::writeInfo(std::string text) { console->info(text); }
 
+void BaseMainWindow::about()
+{
+    QString msg;
+    QTextStream out(&msg);
+    out << "nextpnr-" << NPNR_STRINGIFY_MACRO(ARCHNAME) << "\n";
+    out << "Version " << GIT_DESCRIBE_STR;
+    QMessageBox::information(this, "About nextpnr", msg);
+}
+
 void BaseMainWindow::createMenusAndBars()
 {
     // File menu / project toolbar actions
@@ -140,6 +150,7 @@ void BaseMainWindow::createMenusAndBars()
 
     // Help menu actions
     QAction *actionAbout = new QAction("About", this);
+    connect(actionAbout, &QAction::triggered, this, &BaseMainWindow::about);
 
     // Gile menu options
     actionNew = new QAction("New", this);
diff --git a/gui/basewindow.h b/gui/basewindow.h
index 0b63dd73..4e3cdcb8 100644
--- a/gui/basewindow.h
+++ b/gui/basewindow.h
@@ -87,6 +87,8 @@ class BaseMainWindow : public QMainWindow
     void saveMovie();
     void saveSVG();
 
+    void about();
+
   Q_SIGNALS:
     void contextChanged(Context *ctx);
     void updateTreeView();