From 6f51f5e9620a83ab3b8a11457a753cb9784134c9 Mon Sep 17 00:00:00 2001
From: Martin Brodbeck <martin@brodbeck-online.de>
Date: Tue, 27 Feb 2024 13:37:12 +0100
Subject: [PATCH] cmake magic

---
 CMakeLists.txt      | 11 ++---------
 src/CMakeLists.txt  | 13 +++++++++++++
 src/config.h.in     |  3 +++
 src/raspi_keyer.cpp |  3 ++-
 4 files changed, 20 insertions(+), 10 deletions(-)
 create mode 100644 src/config.h.in

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 45560d7..599da40 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -18,7 +18,7 @@ if (PICO_SDK_VERSION_STRING VERSION_LESS "1.5.0")
   message(FATAL_ERROR "Raspberry Pi Pico SDK version 1.5.0 (or later) required. Your version is ${PICO_SDK_VERSION_STRING}")
 endif()
 
-project(raspi_keyer C CXX ASM)
+project(raspi_keyer VERSION "0.0.1" LANGUAGES C CXX ASM)
 
 # Initialise the Raspberry Pi Pico SDK
 pico_sdk_init()
@@ -29,7 +29,7 @@ add_executable(raspi_keyer)
 add_subdirectory(src)
 
 pico_set_program_name(raspi_keyer "raspi_keyer")
-pico_set_program_version(raspi_keyer "0.0.1")
+pico_set_program_version(raspi_keyer ${PROJECT_VERSION})
 
 pico_enable_stdio_uart(raspi_keyer 1)
 pico_enable_stdio_usb(raspi_keyer 0)
@@ -46,11 +46,6 @@ target_include_directories(raspi_keyer PRIVATE
   ${CMAKE_CURRENT_LIST_DIR}/.. # for our common lwipopts or any other standard includes, if required
 )
 
-# Make sure TinyUSB can find tusb_config.h
-target_include_directories(raspi_keyer PUBLIC
-  ${CMAKE_CURRENT_LIST_DIR}/src
-)
-
 # Add any user requested libraries
 target_link_libraries(raspi_keyer
   hardware_flash
@@ -61,8 +56,6 @@ target_link_libraries(raspi_keyer
   hardware_adc
   tinyusb_device
   tinyusb_board
-  #hardware_pio
-  #hardware_uart
 )
 
 pico_add_extra_outputs(raspi_keyer)
diff --git a/src/CMakeLists.txt b/src/CMakeLists.txt
index 74e638f..887f394 100644
--- a/src/CMakeLists.txt
+++ b/src/CMakeLists.txt
@@ -1,3 +1,16 @@
+configure_file(config.h.in config.h @ONLY)
+
+# Make sure TinyUSB can find tusb_config.h
+target_include_directories(raspi_keyer PUBLIC
+  ${CMAKE_CURRENT_LIST_DIR}
+)
+
+# Make sure the compiler can find the 
+# generated config.h
+target_include_directories(raspi_keyer PUBLIC 
+  ${CMAKE_CURRENT_BINARY_DIR}
+)
+
 target_sources(raspi_keyer PRIVATE
     raspi_keyer.cpp
     settings.cpp
diff --git a/src/config.h.in b/src/config.h.in
new file mode 100644
index 0000000..eca4837
--- /dev/null
+++ b/src/config.h.in
@@ -0,0 +1,3 @@
+#pragma once
+
+#cmakedefine PROJECT_VERSION "@PROJECT_VERSION@"
\ No newline at end of file
diff --git a/src/raspi_keyer.cpp b/src/raspi_keyer.cpp
index f50d3a6..1d223ed 100644
--- a/src/raspi_keyer.cpp
+++ b/src/raspi_keyer.cpp
@@ -10,6 +10,7 @@
 
 #include "keyer.h"
 #include "settings.h"
+#include <config.h>
 #include "tusb_config.h"
 
 namespace
@@ -199,7 +200,7 @@ int main()
     board_init();
     tud_init(BOARD_TUD_RHPORT);
 
-    printf("Hello from core0!\n");
+    printf("RaspiKeyer Version %s\n", PROJECT_VERSION);
 
     queue_init(&keyerQueue, sizeof(KeyerQueueData), 2);
     multicore_reset_core1();