fix building under newer xcode, fix compiler warning

Author: twall

native/Makefile

@@ -47,7 +47,7 @@ OS=$(shell uname | sed -e 's/CYGWIN.*/win32/g' \
                         -e 's/Linux.*/linux/g')
 
 JNA_JNI_VERSION=3.6.0 # auto-generated by ant
-CHECKSUM=9798f03f944a9144703939cb42256762 # auto-generated by ant
+CHECKSUM=e1ef1f9431f659b9adfbf981f169c5d5 # auto-generated by ant
 
 JAVA_INCLUDES=-I"$(JAVA_HOME)/include" \
               -I"$(JAVA_HOME)/include/$(OS)"
@@ -279,6 +279,7 @@ endif
 
 
 ifeq ($(OS),darwin)
+XCODE_VERSION=$(shell xcodebuild -version | grep Xcode | sed 's/^Xcode \([1-9]\).*/\1/g')
 JAVA_INCLUDES=-I/System/Library/Frameworks/JavaVM.framework/Headers
 DEFAULT_ARCH=$(shell arch)
 ARCH=$(shell arch)
@@ -292,15 +293,20 @@ ifneq ($(ARCH),x86_64)
 ALT_ARCHS+=x86_64
 endif
 ifneq ($(ARCH),ppc)
+# not supported on XCode 4+
+ifeq ($(XCODE_VERSION),3)
 ALT_ARCHS+=ppc
 endif
+endif
 LIBSFX=.dylib
 JNISFX=.jnilib
 ifneq ($(SDKROOT),)
 SYSLIBROOT=-Wl,-syslibroot,$(SDKROOT)
 ISYSROOT=-isysroot $(SDKROOT)
-ARCHFLAGS=-arch i386 -arch x86_64 -arch ppc
-#ARCHFLAGS=-arch i386 -arch x86_64
+ARCHFLAGS=-arch i386 -arch x86_64
+ifeq ($(XCODE_VERSION),3)
+ARCHFLAGS+=-arch ppc
+endif
 endif
 
 PCFLAGS+=$(ISYSROOT) -x objective-c
@@ -310,6 +316,7 @@ LDFLAGS=$(ARCHFLAGS) -dynamiclib -o $@ -framework JavaVM \
   -current_version $(JNA_JNI_VERSION) \
   -mmacosx-version-min=10.3 \
   -framework Foundation \
+  -Wl,-no_compact_unwind \
   -install_name ${@F} \
   $(SYSLIBROOT)
 # JAWT linkage handled by -framework JavaVM

native/dispatch.c

@@ -73,6 +73,8 @@
 #endif
 
 #include <stdlib.h>
+// Force XSI-compliant strerror_r (http://unixhelp.ed.ac.uk/CGI/man-cgi?strerror)
+#define _XOPEN_SOURCE 600
 #include <string.h>
 #include <wchar.h>
 #include <jni.h>

test/com/sun/jna/LastErrorTest.java

@@ -87,6 +87,7 @@ public void testThrowLastError() {
         }
         catch(LastErrorException e) {
             assertEquals("Exception should contain error code", ERROR, e.getErrorCode());
+            assertTrue("Exception should include error message: " + e.getMessage(), e.getMessage().length() > 10);
         }
     }
 
@@ -102,6 +103,7 @@ public void testThrowLastErrorDirect() {
         }
         catch(LastErrorException e) {
             assertEquals("Exception should contain error code", ERROR, e.getErrorCode());
+            assertTrue("Exception should include error message: " + e.getMessage(), e.getMessage().length() > 10);
         }
     }