SDL 2.29.3: iOS incorrectly tries to use _iconv

[AJenbo]

After updating to SDL 2.29.3 from 2.28.0 DevilutionX fails to build for iOS.

I'm guessing this is related to 17e62ab

Setting SDL_SYSTEM_ICONV = OFF allowed the build to pass, but this was previously not necessary.

I'm guessing iOS should also be added to this line:

SDL/CMakeLists.txt

Line 244 in 8ce6fb2

if(WINDOWS)

clang: warning: overriding '-miphoneos-version-min=9.0' option with '-target aarch64-apple-ios11.0' [-Woverriding-t-option]
Undefined symbols for architecture arm64:
  "_iconv", referenced from:
      _SDL_iconv in libSDL2.a(SDL_iconv.c.o)
     (maybe you meant: _SDL_iconv_string, _SDL_iconv_open , _SDL_iconv_close , _SDL_iconv )
  "_iconv_close", referenced from:
      _SDL_iconv_close in libSDL2.a(SDL_iconv.c.o)
     (maybe you meant: _SDL_iconv_close)
  "_iconv_open", referenced from:
      _SDL_iconv_open in libSDL2.a(SDL_iconv.c.o)
     (maybe you meant: _SDL_iconv_open)
ld: symbol(s) not found for architecture arm64

Full buld log: https://github.com/diasurgical/devilutionX/actions/runs/7747939817/job/21129505080?pr=6920

[slouken]

Fixed for release, thanks!

[AJenbo]

thank you :)