assign library path based on the OS

build.gradle

@@ -320,6 +320,8 @@ project("grobid-home") {
     }
 }
 
+import org.apache.tools.ant.taskdefs.condition.Os
+
 project(":grobid-service") {
     apply plugin: 'application'
     apply plugin: 'jacoco'
@@ -328,11 +330,18 @@ project(":grobid-service") {
     mainClassName = 'org.grobid.service.main.GrobidServiceApplication'
 
     tasks.run {
+        def libraries = ""
+        if (Os.isFamily(Os.FAMILY_MAC)) {
+            libraries = "${file("../grobid-home/lib/mac-64").absolutePath}"
+        } else if (Os.isFamily(Os.FAMILY_UNIX)) {
+            libraries = "${file("../grobid-home/lib/lin-64/jep").absolutePath}:" +
+                "${file("../grobid-home/lib/lin-64").absolutePath}:"
+        } else  {
+            throw new RuntimeException("Unsupported platform!")
+        }
+
         workingDir = rootProject.rootDir
-        systemProperty "java.library.path","${System.getProperty('java.library.path')}:" +
-            "${file("../grobid-home/lib/lin-64/jep").absolutePath}:" +
-            "${file("../grobid-home/lib/lin-64").absolutePath}:" +
-            "${file("../grobid-home/lib/mac-64").absolutePath}"
+        systemProperty "java.library.path","${System.getProperty('java.library.path')}:" + libraries
     }
 
     // Proposal to check the virtual environment information