1diff --git a/CMakeLists.txt b/CMakeLists.txt
2index 0342181e9..d6d850a30 100644
3--- a/CMakeLists.txt
4+++ b/CMakeLists.txt
5@@ -818,16 +818,14 @@ endif()
6 if(APPLE)
7 # generating a macOS icns file (see https://stackoverflow.com/a/20703594)
8 add_custom_command(OUTPUT ${PROJECT_SOURCE_DIR}/res/augustus.icns
9- COMMAND mkdir -p augustus.iconset
10- COMMAND sips -z 16 16 augustus_256.png --out augustus.iconset/icon_16x16.png
11- COMMAND sips -z 32 32 augustus_256.png --out augustus.iconset/icon_16x16@2x.png
12- COMMAND sips -z 32 32 augustus_256.png --out augustus.iconset/icon_32x32.png
13- COMMAND sips -z 64 64 augustus_256.png --out augustus.iconset/icon_32x32@2x.png
14- COMMAND sips -z 128 128 augustus_256.png --out augustus.iconset/icon_128x128.png
15- COMMAND sips -z 256 256 augustus_256.png --out augustus.iconset/icon_128x128@2x.png
16- COMMAND sips -z 256 256 augustus_256.png --out augustus.iconset/icon_256x256.png
17- COMMAND sips -z 512 512 augustus_512.png --out augustus.iconset/icon_256x256@2x.png
18- COMMAND iconutil -c icns augustus.iconset
19+ COMMAND mkdir augustus.iconset
20+ COMMAND convert augustus_256.png -resize 16x16 augustus.iconset/icon_16.png
21+ COMMAND convert augustus_256.png -resize 32x32 augustus.iconset/icon_32.png
22+ COMMAND convert augustus_256.png -resize 64x64 augustus.iconset/icon_64.png
23+ COMMAND convert augustus_256.png -resize 128x128 augustus.iconset/icon_128.png
24+ COMMAND cp augustus_256.png augustus.iconset/icon_256.png
25+ COMMAND cp augustus_512.png augustus.iconset/icon_512.png
26+ COMMAND png2icns augustus.icns augustus.iconset/icon_{16,32,64,128,256,512}.png
27 COMMAND rm -R augustus.iconset
28 WORKING_DIRECTORY ${PROJECT_SOURCE_DIR}/res)
29 set_source_files_properties(${PROJECT_SOURCE_DIR}/res/augustus.icns PROPERTIES
30diff --git a/cmake/FindSDL2_mixer.cmake b/cmake/FindSDL2_mixer.cmake
31index c3d0b84fe..3e9115dd5 100644
32--- a/cmake/FindSDL2_mixer.cmake
33+++ b/cmake/FindSDL2_mixer.cmake
34@@ -75,7 +75,6 @@ ELSE()
35 PATH_SUFFIXES include include/SDL2
36 PATHS ${SDL2_SEARCH_PATHS}
37 )
38- set(SDL2_MIXER_INCLUDE_DIR "${SDL2_MIXER_INCLUDE_DIR}/Headers")
39 endif()
40
41 if(NOT APPLE OR NOT EXISTS "${SDL2_MIXER_INCLUDE_DIR}/SDL_mixer.h")