Make build easier for macOS

Author: buffrr

README.md

@@ -36,15 +36,18 @@ $ git clone https://github.com/buffrr/fingertip
 
 ### MacOS
 
-Follow [hnsd](https://github.com/handshake-org/hnsd) build instructions for MacOS. 
-
-Move hnsd binary to `builds/macos/Fingertip.app/Contents/MacOS/`
+```
+$ brew install dylibbundler git automake autoconf libtool unbound
+$ git clone https://github.com/imperviousinc/fingertip
+$ cd fingertip && ./builds/macos/build.sh
+```
 
+For development, you can run fingertip from the following path:
 ```
-$ brew install dylibbundler
-$ dylibbundler -od -b -x ./builds/macos/Fingertip.app/Contents/MacOS/hnsd -d ./builds/macos/Fingertip.app/Contents/Frameworks/ -p @executable_path/../Frameworks/
-$ go build -trimpath -o ./builds/macos/Fingertip.app/Contents/MacOS/fingertip
+$ ./builds/macos/Fingertip.app/Contents/MacOS/fingertip
 ```
+        
+Configure your IDE to output to this directory or continue to use `build.sh` when making changes (it will only build hnsd once).
 
 ### Windows
 

builds/macos/build.sh

@@ -0,0 +1,55 @@
+#!/bin/bash
+
+# make sure path is correct
+# so that pwd points to main repo directory
+[[ -e builds/macos/build.sh ]] || { echo >&2 "Please cd into fingertip repo before running this script."; exit 1; }
+
+min_macos_version="10.13"
+cflags="-mmacosx-version-min="${min_macos_version}
+working_dir=$(pwd)
+bundle_path="${working_dir}/builds/macos/Fingertip.app/Contents/"
+hnsd_path=${bundle_path}/MacOS/hnsd
+fingertip_path=${bundle_path}/MacOS/fingertip
+lib_dir=${bundle_path}/Frameworks/
+
+if [ ! -e "$hnsd_path" ]; then
+
+echo "Cloning hnsd ..."
+tmp_dir=$(mktemp -d 2>/dev/null || mktemp -d -t 'fingertip_hnsd')
+git clone https://github.com/handshake-org/hnsd "$tmp_dir"
+cd "$tmp_dir" || exit
+
+echo "Building hnsd ..."
+./autogen.sh && ./configure
+make CFLAGS=$cflags -j 10
+cp "${tmp_dir}/hnsd" "$hnsd_path"
+
+cd "$working_dir" || exit
+
+# bundle libs
+dylibbundler -od -b -x "$hnsd_path" -d "$lib_dir" -p @executable_path/../Frameworks/
+
+fi
+
+# build fingertip
+CGO_CFLAGS=$cflags CGO_LDFLAGS=$cflags go build -trimpath -o "$fingertip_path"
+
+get_min_version() {
+   otool -l $1 | grep LC_VERSION_MIN_MACOSX  -A3 | grep version | xargs | sed s/version// | xargs
+}
+
+check_min_version() {
+  min=$(get_min_version "$1")
+  name=$(basename "$1")
+  if [ "$min" != "$min_macos_version" ] ; then
+    echo "Warning: ${name} got min version = ${min}, want $min_macos_version"
+  fi
+}
+
+check_min_version "$fingertip_path"
+check_min_version "$hnsd_path"
+
+for file in "${lib_dir}"/*
+do
+  check_min_version "$file"
+done