ci: add Jenkinsfile for running tests on macos

Also adds a `Makefile` to seaprate out the building of compiler.

Signed-off-by: Jakub Sokołowski <jakub@status.im>

.gitignore

@@ -3,3 +3,7 @@ build/
 
 nimble.develop
 nimble.paths
+
+ci/build_nim.sh
+ci/NimBinaries/
+ci/nim/

ci/Jenkinsfile

@@ -0,0 +1,62 @@
+pipeline {
+  agent { label 'macos && aarch64' }
+
+  options {
+    disableConcurrentBuilds()
+    /* manage how many builds we keep */
+    buildDiscarder(logRotator(
+      numToKeepStr: '20',
+      daysToKeepStr: '30',
+    ))
+  }
+
+  environment {
+    /* Nim has to be built in Compiler stage. */
+    PATH = "${PATH}:${WORKSPACE}/ci/nim/bin"
+  }
+
+  stages {
+    stage('Modules') {
+      steps {
+        sh 'git submodule update --init'
+      }
+    }
+
+    stage('Compiler') {
+      steps {
+        sh 'make -C ci compiler'
+      }
+    }
+
+    stage('Deps') {
+      steps {
+        sh 'nimble install -y --depsOnly'
+      }
+    }
+
+    stage('Tests') {
+      parallel {
+        stage('C') {
+          environment {
+            NIMLANG = 'c'
+          }
+          steps {
+            sh 'nimble test'
+          }
+        }
+
+        stage('C++') {
+          environment {
+            NIMLANG = 'cpp'
+          }
+          steps {
+            sh 'nimble test'
+          }
+        }
+      }
+    }
+  }
+  post {
+    always { cleanWs() }
+  }
+}

ci/Makefile

@@ -0,0 +1,28 @@
+NIM_BUILD_SCRIPT_URL = https://raw.githubusercontent.com/status-im/nimbus-build-system/master/scripts/build_nim.sh
+NIM_BUILD_SCRIPT = build_nim.sh
+
+NPROC ?= $(shell nproc)
+MAKEFLAGS ?= -j$(NPROC)
+
+ifeq ($(detected_OS),Darwin)
+ NCPU = $(shell sysctl -n hw.ncpu)
+else ifeq ($(OS),Windows_NT)
+ NCPU = $(NUMBER_OF_PROCESSORS)
+ MAKE_CMD = mingw32-make
+else ifneq ($(detected_OS),Linux)
+ NCPU = $(shell nproc)
+else
+ NCPU = 1
+ MAKE_CMD = make
+endif
+
+compiler: NIM_COMMIT ?= version-1-6
+compiler: QUICK_AND_DIRTY_COMPILER ?= 1
+compiler: QUICK_AND_DIRTY_NIMBLE ?= 1
+compiler: CC ?= gcc
+compiler: $(NIM_BUILD_SCRIPT)
+	./build_nim.sh nim csources dist/nimble NimBinaries
+
+$(NIM_BUILD_SCRIPT):
+	curl -LSs $(NIM_BUILD_SCRIPT_URL) -o $(NIM_BUILD_SCRIPT)
+	chmod +x $(NIM_BUILD_SCRIPT)