CMake configure error on install with libavif with FetchContent on main (for SDL3)

[Sam Huang]

OS: Windows 11

Relevent CMake log:

1> [CMake] -- Dynamic libtiff: $<TARGET_FILE_NAME:tiff>
1> [CMake] -- SDL3_image: Using vendored libwebp
1> [CMake] -- Could NOT find ZLIB (missing: ZLIB_LIBRARY ZLIB_INCLUDE_DIR) 
1> [CMake] -- Could NOT find PNG (missing: PNG_LIBRARY PNG_PNG_INCLUDE_DIR) 
1> [CMake] -- Could NOT find JPEG (missing: JPEG_LIBRARY JPEG_INCLUDE_DIR) 
1> [CMake] -- Could NOT find tiff (missing: tiff_DIR)
1> [CMake] -- Could NOT find TIFF (missing: TIFF_LIBRARY TIFF_INCLUDE_DIR) 
1> [CMake] -- Could NOT find GIF (missing: GIF_LIBRARY GIF_INCLUDE_DIR) 
1> [CMake] -- Performing Test WEBP_HAVE_FLAG_SSE41
1> [CMake] -- Performing Test WEBP_HAVE_FLAG_SSE41 - Success
1> [CMake] -- Performing Test WEBP_HAVE_FLAG_SSE2
1> [CMake] -- Performing Test WEBP_HAVE_FLAG_SSE2 - Success
1> [CMake] -- Performing Test WEBP_HAVE_FLAG_MIPS32
1> [CMake] -- Performing Test WEBP_HAVE_FLAG_MIPS32 - Failed
1> [CMake] -- Performing Test WEBP_HAVE_FLAG_MIPS32
1> [CMake] -- Performing Test WEBP_HAVE_FLAG_MIPS32 - Failed
1> [CMake] -- Performing Test WEBP_HAVE_FLAG_MIPS_DSP_R2
1> [CMake] -- Performing Test WEBP_HAVE_FLAG_MIPS_DSP_R2 - Failed
1> [CMake] -- Performing Test WEBP_HAVE_FLAG_MIPS_DSP_R2
1> [CMake] -- Performing Test WEBP_HAVE_FLAG_MIPS_DSP_R2 - Failed
1> [CMake] -- Performing Test WEBP_HAVE_FLAG_NEON
1> [CMake] -- Performing Test WEBP_HAVE_FLAG_NEON - Failed
1> [CMake] -- Performing Test WEBP_HAVE_FLAG_NEON
1> [CMake] -- Performing Test WEBP_HAVE_FLAG_NEON - Failed
1> [CMake] -- Performing Test WEBP_HAVE_FLAG_MSA
1> [CMake] -- Performing Test WEBP_HAVE_FLAG_MSA - Failed
1> [CMake] -- Performing Test WEBP_HAVE_FLAG_MSA
1> [CMake] -- Performing Test WEBP_HAVE_FLAG_MSA - Failed
1> [CMake] -- Could NOT find GLUT (missing: GLUT_glut_LIBRARY) 
1> [CMake] -- Could NOT find SDL (missing: SDL_LIBRARY SDL_INCLUDE_DIR) 
1> [CMake] -- Dynamic libwebpdemux: $<TARGET_FILE_NAME:webpdemux>
1> [CMake] -- Dynamic libwebp: $<TARGET_FILE_NAME:webp>
1> [CMake] -- SDL3_image backends:
1> [CMake] -- - enabled:  stb avif bmp gif jpg lbm pcx png pnm qoi svg tga tif webp xcf xpm xv
1> [CMake] -- - disabled: imageio wic jxl
1> [CMake] -- Configuring done (20.1s)
1> [CMake] CMake Error: install(EXPORT "libavif-config" ...) includes target "avif" which requires target "dav1d" that is not in any export set.
1> [CMake] CMake Error: install(EXPORT "libavif-config" ...) includes target "avif" which requires target "aom" that is not in any export set.

[Anonymous Maarten]

Can you try #441?