gain_offset: fixes for new compiler

.vscode/settings.json

@@ -17,39 +17,5 @@
         }
     },
     "cmake.buildBeforeRun": true,
-    "C_Cpp.default.configurationProvider": "ms-vscode.cmake-tools",
-    "files.associations": {
-        "stdlib.h": "c",
-        "stdio.h": "c",
-        "fastadc.h": "c",
-        "common_configs.h": "c",
-        "nanosystick.h": "c",
-        "wm8213afe.h": "c",
-        "systick.h": "c",
-        "array": "c",
-        "string": "c",
-        "string_view": "c",
-        "ranges": "c",
-        "rgbscan.h": "c",
-        "random": "c",
-        "address_mapped.h": "c",
-        "gpio.h": "c",
-        "pico.h": "c",
-        "config.h": "c",
-        "version.h": "c",
-        "platform.h": "c",
-        "optional": "c",
-        "ostream": "c",
-        "system_error": "c",
-        "functional": "c",
-        "tuple": "c",
-        "type_traits": "c",
-        "utility": "c",
-        "flash.h": "c",
-        "vector": "c",
-        "initializer_list": "c",
-        "retro_logo_128x128_rgb.h": "c",
-        "menuglobals.h": "c"
-    },
-    "cortex-debug.variableUseNaturalFormat": true
-}
+    "C_Cpp.default.configurationProvider": "ms-vscode.cmake-tools"
+}

CMakeLists.txt

@@ -33,12 +33,12 @@ pico_sdk_init()
 # Comment this if you don't care about binary security
 find_program(SHA1SUM NAMES sha1sum)
 if (NOT SHA1SUM)
-    message(FATAL_ERROR "sha1sum was not found")
+    message(STATUS "sha1sum was not found")
 endif()
 
 find_program(STR2HEX NAMES xxd)
 if (NOT STR2HEX)
-    message(FATAL_ERROR "xxd was not found")
+    message(STATUS "xxd was not found")
 endif()
 
 set(CMAKE_C_FLAGS_DEBUG "${CMAKE_C_FLAGS_DEBUG} -DRGB2HDMI_DEBUG")

src/overlay/overlay.h

@@ -31,7 +31,7 @@ inline io_rw_16 video_overlay_get_starty() {
 
 void set_video_overlay(volatile signed int width, volatile signed int height, bool enabled);
 
-inline void video_overlay_scanline_prepare(unsigned int render_line_number) {
+static inline void video_overlay_scanline_prepare(unsigned int render_line_number) {
     unsigned int next_scanlineNumber = (render_line_number + 1);
     if (next_scanlineNumber >= GET_VIDEO_PROPS().height) {
         next_scanlineNumber = 0;