If you enable this, you'll need to link with CoreBluetooth.framework and add something like this to your Info.plist:
<key>NSBluetoothPeripheralUsageDescription</key>
<string>MyApp would like to remain connected to nearby bluetooth Game Controllers and Game Pads even when you're not using the app.</string>
Otherwise if SDL_POWER_DISABLED is disabled (eg with --disable-power):
... with clang -pedantic:
src/power/SDL_power.c:48:50: warning: use of GNU empty initializer extension [-Wgnu-empty-initializer]
static SDL_GetPowerInfo_Impl implementations[] = {
^
src/power/SDL_power.c:48:50: warning: zero size arrays are an extension [-Wzero-length-array]
2 warnings generated.
... with gcc -pedantic:
src/power/SDL_power.c:48:50: warning: ISO C forbids empty initializer braces [-Wpedantic]
src/power/SDL_power.c:48:50: warning: ISO C forbids empty initializer braces [-Wpedantic]
static SDL_GetPowerInfo_Impl implementations[] = {
^
src/power/SDL_power.c:48:30: error: zero or negative size array ?implementations?
static SDL_GetPowerInfo_Impl implementations[] = {
^~~~~~~~~~~~~~~
... with Watcom:
./src/power/SDL_power.c(85): Error! E1112: Initializer list cannot be empty
Author: Anthony Pesch <inolen@gmail.com>
Date: Fri May 4 20:21:21 2018 -0400
Added SDL_AUDIO_ALLOW_SAMPLES_CHANGE flag enabling users of SDL_OpenAudioDevice to get
the sample size of the actual hardware buffer vs having a stream created to handle the
delta
add HAVE_ENDPOINTVOLUME_H, HAVE_MMDEVICEAPI_H and HAVE_AUDIOCLIENT_H
in SDL_config.h.in, SDL_config.h.cmake, SDL_config_windows.h, and in
SDL_config_winrt.h.
Sylvain
Patch a few warnings when using:
-Wmissing-prototypes -Wdocumentation -Wdocumentation-unknown-command
They are automatically enabled with -Wall
Anthony @ POW Games
SDL_CreateTextureFromSurface makes an internal call to SDL_GetColorKey which can return an error and spams the error log with "Surface doesn't have a colorkey" even though the original function didn't return an error.
lectem
The SDL_syswm.h header includes the windows.h header after including begin_code.h which changes the structure packing alignment.
It seems this is not safe as suggested by the following warning :
warning C4121: 'JOBOBJECT_IO_RATE_CONTROL_INFORMATION_NATIVE_V2': alignment of a member was sensitive to packing
Felix Geyer
Forwarding from https://bugs.debian.org/892087 quoting verbatim:
The SDL2 header SDL_cpuinfo.h generates gcc warnings if the program using
it compiles with the -Wundef warning. (In particular, this means that QEMU
builds using it fail on at least sparc hosts, since QEMU dev builds
use both -Wundef and -Werror.).
/usr/include/SDL2/SDL_cpuinfo.h:63:5: warning: "HAVE_IMMINTRIN_H" is not defined, evaluates to 0 [-Wundef]
#if HAVE_IMMINTRIN_H && !defined(SDL_DISABLE_IMMINTRIN_H)
Ryan C. Gordon
Sam Lantinga
Jeremy Ong
Ozkan Sezer
Ethan Lee