diff --git a/core/org.eclipse.cdt.core.native/.classpath b/core/org.eclipse.cdt.core.native/.classpath
index 3bc247511f0..2d1a4302f04 100644
--- a/core/org.eclipse.cdt.core.native/.classpath
+++ b/core/org.eclipse.cdt.core.native/.classpath
@@ -1,7 +1,7 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<classpath>
-	<classpathentry kind="src" path="src"/>
-	<classpathentry kind="con" path="org.eclipse.jdt.launching.JRE_CONTAINER/org.eclipse.jdt.internal.debug.ui.launcher.StandardVMType/JavaSE-1.7"/>
-	<classpathentry kind="con" path="org.eclipse.pde.core.requiredPlugins"/>
-	<classpathentry kind="output" path="bin"/>
-</classpath>
+<?xml version="1.0" encoding="UTF-8"?>
+<classpath>
+	<classpathentry kind="con" path="org.eclipse.jdt.launching.JRE_CONTAINER/org.eclipse.jdt.internal.debug.ui.launcher.StandardVMType/J2SE-1.5"/>
+	<classpathentry kind="con" path="org.eclipse.pde.core.requiredPlugins"/>
+	<classpathentry kind="src" path="src"/>
+	<classpathentry kind="output" path="bin"/>
+</classpath>
diff --git a/core/org.eclipse.cdt.core.native/.settings/org.eclipse.jdt.core.prefs b/core/org.eclipse.cdt.core.native/.settings/org.eclipse.jdt.core.prefs
index 4de53820811..0c036c2d5e5 100644
--- a/core/org.eclipse.cdt.core.native/.settings/org.eclipse.jdt.core.prefs
+++ b/core/org.eclipse.cdt.core.native/.settings/org.eclipse.jdt.core.prefs
@@ -1,9 +1,8 @@
-#Mon Oct 17 17:36:13 PDT 2011
 eclipse.preferences.version=1
 org.eclipse.jdt.core.compiler.codegen.inlineJsrBytecode=enabled
-org.eclipse.jdt.core.compiler.codegen.targetPlatform=1.7
+org.eclipse.jdt.core.compiler.codegen.targetPlatform=1.5
 org.eclipse.jdt.core.compiler.codegen.unusedLocal=preserve
-org.eclipse.jdt.core.compiler.compliance=1.7
+org.eclipse.jdt.core.compiler.compliance=1.5
 org.eclipse.jdt.core.compiler.debug.lineNumber=generate
 org.eclipse.jdt.core.compiler.debug.localVariable=generate
 org.eclipse.jdt.core.compiler.debug.sourceFile=generate
@@ -78,7 +77,7 @@ org.eclipse.jdt.core.compiler.problem.unusedParameterWhenOverridingConcrete=disa
 org.eclipse.jdt.core.compiler.problem.unusedPrivateMember=warning
 org.eclipse.jdt.core.compiler.problem.unusedWarningToken=warning
 org.eclipse.jdt.core.compiler.problem.varargsArgumentNeedCast=warning
-org.eclipse.jdt.core.compiler.source=1.7
+org.eclipse.jdt.core.compiler.source=1.5
 org.eclipse.jdt.core.formatter.align_type_members_on_columns=false
 org.eclipse.jdt.core.formatter.alignment_for_arguments_in_allocation_expression=16
 org.eclipse.jdt.core.formatter.alignment_for_arguments_in_enum_constant=16
diff --git a/core/org.eclipse.cdt.core.native/META-INF/MANIFEST.MF b/core/org.eclipse.cdt.core.native/META-INF/MANIFEST.MF
index 9419d11da78..3178b04001d 100644
--- a/core/org.eclipse.cdt.core.native/META-INF/MANIFEST.MF
+++ b/core/org.eclipse.cdt.core.native/META-INF/MANIFEST.MF
@@ -6,10 +6,10 @@ Bundle-Version: 5.7.0.qualifier
 Bundle-Activator: org.eclipse.cdt.internal.core.natives.CNativePlugin
 Bundle-Vendor: %providerName
 Bundle-Localization: plugin
-Export-Package: org.eclipse.cdt.core;org.eclipse.cdt.core.native=split;mandatory=org.eclipse.cdt.core.native,
- org.eclipse.cdt.utils;org.eclipse.cdt.core.native=split;mandatory=org.eclipse.cdt.core.native,
+Export-Package: org.eclipse.cdt.core;native=split;mandatory:=native,
+ org.eclipse.cdt.utils;native=split;mandatory:=native,
  org.eclipse.cdt.utils.pty;version="5.7",
  org.eclipse.cdt.utils.spawner;version="5.7"
 Require-Bundle: org.eclipse.core.runtime;bundle-version="[3.7.0,4.0.0)"
 Bundle-ActivationPolicy: lazy
-Bundle-RequiredExecutionEnvironment: JavaSE-1.7
+Bundle-RequiredExecutionEnvironment: J2SE-1.5
diff --git a/core/org.eclipse.cdt.core/META-INF/MANIFEST.MF b/core/org.eclipse.cdt.core/META-INF/MANIFEST.MF
index c6eb843c1d2..a07fce70c98 100644
--- a/core/org.eclipse.cdt.core/META-INF/MANIFEST.MF
+++ b/core/org.eclipse.cdt.core/META-INF/MANIFEST.MF
@@ -6,7 +6,7 @@ Bundle-Version: 5.7.0.qualifier
 Bundle-Activator: org.eclipse.cdt.core.CCorePlugin
 Bundle-Vendor: %providerName
 Bundle-Localization: plugin
-Export-Package: org.eclipse.cdt.core;org.eclipse.cdt.core=split;mandatory=org.eclipse.cdt.core,
+Export-Package: org.eclipse.cdt.core,
  org.eclipse.cdt.core.browser,
  org.eclipse.cdt.core.cdtvariables,
  org.eclipse.cdt.core.dom,
@@ -94,7 +94,7 @@ Export-Package: org.eclipse.cdt.core;org.eclipse.cdt.core=split;mandatory=org.ec
  org.eclipse.cdt.internal.formatter;x-friends:="org.eclipse.cdt.ui",
  org.eclipse.cdt.internal.formatter.align;x-internal:=true,
  org.eclipse.cdt.internal.formatter.scanner;x-friends:="org.eclipse.cdt.ui",
- org.eclipse.cdt.utils;org.eclipse.cdt.core=split;mandatory=org.eclipse.cdt.core,
+ org.eclipse.cdt.utils,
  org.eclipse.cdt.utils.cdtvariables,
  org.eclipse.cdt.utils.coff,
  org.eclipse.cdt.utils.coff.parser,