[macOS] Added QR scanner facility using platform-native helper app.

contrib/build-osx/base.sh

@@ -21,7 +21,7 @@ function DoCodeSignMaybe { # ARGS: infoName fileOrDirName codesignIdentity
     identity="$3"
     deep=""
     if [ -z "$identity" ]; then
-        # we are ok with them not passing anything -- master script calls us always even if no identity is specified
+        # we are ok with them not passing anything; master script calls us unconditionally even if no identity is specified
         return
     fi
     if [ -d "$file" ]; then

contrib/build-osx/make_osx

@@ -16,6 +16,7 @@ export PYTHONHASHSEED=22
 VERSION=`git describe --tags --dirty --always`
 
 which brew > /dev/null 2>&1 || fail "Please install brew from https://brew.sh/ to continue"
+which xcodebuild > /dev/null 2>&1 || fail "Please install Xcode and xcode command line tools to continue"
 
 # Code Signing: See https://developer.apple.com/library/archive/documentation/Security/Conceptual/CodeSigningGuide/Procedures/Procedures.html
 APP_SIGN=""
@@ -87,6 +88,14 @@ popd
 cp $BUILDDIR/secp256k1/.libs/libsecp256k1.0.dylib contrib/build-osx
 DoCodeSignMaybe "libsecp256k1" "contrib/build-osx/libsecp256k1.0.dylib" "$APP_SIGN" # If APP_SIGN is empty will be a noop
 
+info "Building CalinsQRReader..."
+d=contrib/CalinsQRReader
+pushd $d
+rm -fr build
+xcodebuild || fail "Could not build CalinsQRReader"
+popd
+DoCodeSignMaybe "CalinsQRReader.app" "${d}/build/Release/CalinsQRReader.app" "$APP_SIGN" # If APP_SIGN is empty will be a noop
+
 
 info "Installing requirements..."
 python3 -m pip install -Ir ./contrib/deterministic-build/requirements.txt --user && \

contrib/build-osx/osx.spec

@@ -41,6 +41,9 @@ datas += collect_data_files('btchip')
 datas += collect_data_files('keepkeylib')
 datas += collect_data_files('ckcc')
 
+# Add the QR Scanner helper app
+datas += [(electrum + "contrib/CalinsQRReader/build/Release/CalinsQRReader.app", "./contrib/CalinsQRReader/build/Release/CalinsQRReader.app")]
+
 # Add libusb so Trezor and Safe-T mini will work
 binaries = [(electrum + "contrib/build-osx/libusb-1.0.dylib", ".")]
 binaries += [(electrum + "contrib/build-osx/libsecp256k1.0.dylib", ".")]