[FIXED JENKINS-29507] Make JenkinsRule useable on systems without glibc

core/src/main/java/hudson/Functions.java

@@ -75,6 +75,7 @@ import hudson.tasks.UserAvatarResolver;
 import hudson.util.Area;
 import hudson.util.FormValidation.CheckMethod;
 import hudson.util.Iterators;
+import hudson.util.jna.GNUCLibrary;
 import hudson.util.Secret;
 import hudson.views.MyViewsTabBar;
 import hudson.views.ViewsTabBar;
@@ -459,6 +460,15 @@ public class Functions {
     public static boolean isWindows() {
         return File.pathSeparatorChar==';';
     }
+    
+    public static boolean isGlibcSupported() {
+        try {
+            GNUCLibrary.LIBC.getpid();
+            return true;
+        } catch(Throwable t) {
+            return false;
+        }
+    }
 
     public static List<LogRecord> getLogRecords() {
         return Jenkins.logRecords;

test/src/main/java/org/jvnet/hudson/test/JenkinsRule.java

@@ -696,7 +696,7 @@ public class JenkinsRule implements TestRule, MethodRule, RootAction {
         mvn.copyFrom(JenkinsRule.class.getClassLoader().getResource(mavenVersion + "-bin.zip"));
         mvn.unzip(new FilePath(buildDirectory));
         // TODO: switch to tar that preserves file permissions more easily
-        if(!Functions.isWindows())
+        if(Functions.isGlibcSupported())
             GNUCLibrary.LIBC.chmod(new File(mvnHome, "bin/mvn").getPath(),0755);
 
         Maven.MavenInstallation mavenInstallation = new Maven.MavenInstallation("default",
@@ -720,7 +720,7 @@ public class JenkinsRule implements TestRule, MethodRule, RootAction {
             File antHome = createTmpDir();
             ant.unzip(new FilePath(antHome));
             // TODO: switch to tar that preserves file permissions more easily
-            if(!Functions.isWindows())
+            if(Functions.isGlibcSupported())
                 GNUCLibrary.LIBC.chmod(new File(antHome,"apache-ant-1.8.1/bin/ant").getPath(),0755);
 
             antInstallation = new Ant.AntInstallation("default", new File(antHome,"apache-ant-1.8.1").getAbsolutePath(),NO_PROPERTIES);
@@ -2318,7 +2318,7 @@ public class JenkinsRule implements TestRule, MethodRule, RootAction {
         // this also prevents tests from falsely advertising Hudson
         DNSMultiCast.disabled = true;
 
-        if (!Functions.isWindows()) {
+        if (Functions.isGlibcSupported()) {
             try {
                 GNUCLibrary.LIBC.unsetenv("MAVEN_OPTS");
                 GNUCLibrary.LIBC.unsetenv("MAVEN_DEBUG_OPTS");