Pid_t doesn't exist?

On OSX and it says pid_t doesn’t exist. Not sure what package I need to install. Any help is appreciation.

What version of Aseprite are you running? how are you running it? where does that message appear?

So I’m actually try to compile it, and when I put " ```
cd aseprite
mkdir build
cd build
cmake
-DCMAKE_BUILD_TYPE=RelWithDebInfo
-DCMAKE_OSX_ARCHITECTURES=x86_64
-DCMAKE_OSX_DEPLOYMENT_TARGET=10.9
-DCMAKE_OSX_SYSROOT=/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.14.sdk
-DLAF_OS_BACKEND=skia
-DSKIA_DIR=$HOME/deps/skia
-DSKIA_OUT_DIR=$HOME/deps/skia/out/Release
-G Ninja

ninja aseprite

into the terminal it gives me the messsage, "   pid_t doesn't exist on this platform?"

![31 AM|690x442](upload://kSXYneMs4RM5D6ujvDVcmGKmMuI.png)

It’s highly probable that the path /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.14.sdk is wrong, try using /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX.sdk

Okay. I changed it. Same error. :confused: