Terminal commnad:
sharpie bind --output=BRPtouchPrinterKit --namespace=BRPtouchPrinterKit --sdk iphoneos13.0 BRPtouchPrinter.h
This should have built the ApiDefinition.cs and the StructsandEnums.cs files
Gives: [ObjectiveSharpie] Unsupported clang availability platform: 'macCatalyst'
MacBook Pro: MacOS Mojave 10.14.6
=== Visual Studio Community 2019 for Mac ===
Version 8.3 (build 1805)
Installation UUID: 1d586663-f7f3-4963-805f-893b8a370d14
GTK+ 2.24.23 (Raleigh theme)
Xamarin.Mac 5.16.1.24 (d16-3 / 08809f5b)
Package version: 604000198
=== Mono Framework MDK ===
Runtime:
Mono 6.4.0.198 (2019-06/fe64a4765e6) (64-bit)
Package version: 604000198
=== NuGet ===
Version: 5.3.0.6192
=== .NET Core SDK ===
SDK: /usr/local/share/dotnet/sdk/3.0.100/Sdks
SDK Versions:
3.0.100
2.1.701
MSBuild SDKs: /Library/Frameworks/Mono.framework/Versions/6.4.0/lib/mono/msbuild/Current/bin/Sdks
=== .NET Core Runtime ===
Runtime: /usr/local/share/dotnet/dotnet
Runtime Versions:
3.0.0
2.1.13
2.1.12
=== Xamarin.Profiler ===
Version: 1.6.11.16
Location: /Applications/Xamarin Profiler.app/Contents/MacOS/Xamarin Profiler
=== Updater ===
Version: 11
=== Apple Developer Tools ===
Xcode 11.0 (14936)
Build 11A420a
=== Xamarin.Android ===
Version: 10.0.0.43 (Visual Studio Community)
Commit: xamarin-android/d16-3/8af1ca8
Android SDK: /Users/jhess/Library/Developer/Xamarin/android-sdk-macosx
Supported Android versions:
None installed
SDK Tools Version: 26.1.1
SDK Platform Tools Version: 28.0.2
SDK Build Tools Version: 28.0.3
Build Information:
Mono: mono/mono/2019-06@7af64d1ebe9
Java.Interop: xamarin/java.interop/d16-3@5836f58
LibZipSharp: grendello/LibZipSharp/d16-3@71f4a94
LibZip: nih-at/libzip/rel-1-5-1@b95cf3f
ProGuard: xamarin/proguard/master@905836d
SQLite: xamarin/sqlite/3.27.1@8212a2d
Xamarin.Android Tools: xamarin/xamarin-android-tools/d16-3@cb41333
=== Microsoft Mobile OpenJDK ===
Java SDK: /Users/jhess/Library/Developer/Xamarin/jdk/microsoft_dist_openjdk_1.8.0.25
1.8.0-25
Android Designer EPL code available here:
https://github.com/xamarin/AndroidDesigner.EPL
=== Android SDK Manager ===
Version: 1.4.0.65
Hash: c33b107
Branch: remotes/origin/d16-3
Build date: 2019-09-19 20:42:44 UTC
=== Android Device Manager ===
Version: 1.2.0.115
Hash: 724ea69
Branch: remotes/origin/d16-3
Build date: 2019-09-19 20:43:06 UTC
=== Xamarin.Mac ===
Xamarin.Mac not installed. Can't find /Library/Frameworks/Xamarin.Mac.framework/Versions/Current/Version.
=== Xamarin.iOS ===
Version: 13.2.0.42 (Visual Studio Community)
Hash: 5e8a208b
Branch: d16-3
Build date: 2019-09-17 14:19:30-0400
=== Xamarin Designer ===
Version: 16.3.0.230
Hash: bbe518670
Branch: remotes/origin/d16-3-xcode11
Build date: 2019-09-17 18:39:30 UTC
=== Xamarin Inspector ===
Version: 1.4.3
Hash: db27525
Branch: 1.4-release
Build date: Mon, 09 Jul 2018 21:20:18 GMT
Client compatibility: 1
=== Build Information ===
Release ID: 803001805
Git revision: df50511ccb08d4d84a53939f1d7fc0b40cbb0ee1
Build date: 2019-09-20 16:10:55+00
Build branch: release-8.3
Xamarin extensions: da8d448cd65f2cc87c5e6dc7e2c2ca7b96d20c72
=== Operating System ===
Mac OS X 10.14.6
Darwin 18.7.0 Darwin Kernel Version 18.7.0
Tue Aug 20 16:57:14 PDT 2019
root:xnu-4903.271.2~2/RELEASE_X86_64 x86_64
BICNJC02NX14UG3:headers jhess$ sharpie xcode -sdks
sdk: appletvos13.0 arch: arm64
sdk: iphoneos13.0 arch: arm64 armv7
sdk: driverkit19.0 arch: x86_64 i386
sdk: macosx10.15 arch: x86_64 i386
sdk: watchos6.0 arch: armv7k
BICNJC02NX14UG3:headers jhess$

Can you try with the latest build from http://aka.ms/objective-sharpie and report back.
That works for us internally?
You're my hero. This did work. I thought that I was at the most recent version. Clearly that was not it. Thank you very much.
I'm having this issue still (or again?).
@chamons the sharpie package provided by you above, currently v3.4.47, will not open for me in Catalina, I get the warning:
"objectivesharpie-3.4.47.pkg” can’t be opened because Apple cannot check it for malicious software. This software needs to be updated. Contact the developer for more information.
@tarrball - You are correct. I've filed that as https://github.com/xamarin/xamarin-macios/issues/7422
However, you should be able to right click -> open and bypass the check for now.
@chamons hi, I think you should update the sharpie download link to this docs https://docs.microsoft.com/en-us/xamarin/cross-platform/macios/binding/objective-sharpie/get-started
and update the update feature of the command line sharpie update
Good catch, I’ll take care of docs. Thanks for the heads up, the evergreen link is http://aka.ms/objective-sharpie
Most helpful comment
Can you try with the latest build from http://aka.ms/objective-sharpie and report back.
That works for us internally?