diff --git a/packages/dx/build.sh b/packages/dx/build.sh
index c70533ad0..411b7a2ad 100755
--- a/packages/dx/build.sh
+++ b/packages/dx/build.sh
@@ -1,6 +1,7 @@
 TERMUX_PKG_HOMEPAGE=http://developer.android.com/tools/help/index.html
 TERMUX_PKG_DESCRIPTION="Command which takes in class files and reformulates them for usage on Android"
 TERMUX_PKG_VERSION=$TERMUX_ANDROID_BUILD_TOOLS_VERSION
+TERMUX_PKG_BUILD_REVISION=1
 TERMUX_PKG_PLATFORM_INDEPENDENT=true
 
 termux_step_make_install () {
@@ -11,6 +12,5 @@ termux_step_make_install () {
                 $ANDROID_HOME/build-tools/${TERMUX_PKG_VERSION}/lib/dx.jar
 
 	install $TERMUX_PKG_BUILDER_DIR/dx $TERMUX_PREFIX/bin/dx
-	install $TERMUX_PKG_BUILDER_DIR/dalvikvm-wrapper $TERMUX_PREFIX/bin/dalvikvm-wrapper
-	perl -p -i -e "s%\@TERMUX_PREFIX\@%${TERMUX_PREFIX}%g" $TERMUX_PREFIX/bin/{dx,dalvikvm-wrapper}
+	perl -p -i -e "s%\@TERMUX_PREFIX\@%${TERMUX_PREFIX}%g" $TERMUX_PREFIX/bin/dx
 }
diff --git a/packages/dx/dalvikvm-wrapper b/packages/dx/dalvikvm-wrapper
deleted file mode 100755
index 4b295855e..000000000
--- a/packages/dx/dalvikvm-wrapper
+++ /dev/null
@@ -1,8 +0,0 @@
-#!/bin/sh
-
-# There needs to be a folder at $ANDROID_DATA/dalvik-cache:
-export ANDROID_DATA=@TERMUX_PREFIX@/var/android/
-mkdir -p $ANDROID_DATA/dalvik-cache
-
-# Reset LD_LIBRARY_PATH to avoid shared library clashes:
-LD_LIBRARY_PATH=/system/lib dalvikvm $@
diff --git a/packages/dx/dx b/packages/dx/dx
index b307736cf..242feb268 100755
--- a/packages/dx/dx
+++ b/packages/dx/dx
@@ -1,6 +1,6 @@
 #!/bin/sh
 
-dalvikvm-wrapper
+exec dalvikvm \
 	-Xmx256m \
 	-cp @TERMUX_PREFIX@/share/dex/dx.jar \
 	com.android.dx.command.Main $@
diff --git a/packages/ecj/ecj b/packages/ecj/ecj
index f62fe7623..994c349c9 100755
--- a/packages/ecj/ecj
+++ b/packages/ecj/ecj
@@ -1,10 +1,11 @@
 #!/bin/sh
 
-# There needs to be a folder at $ANDROID_DATA/dalvik-cache
-export ANDROID_DATA=@TERMUX_PREFIX@/var/android/
-mkdir -p $ANDROID_DATA/dalvik-cache
-
-jarpath=@TERMUX_PREFIX@/share/dex/ecj.jar
-# -proc:none to disable annotation processing/compiling
-# -7 for java 1.7 compatibility
-dalvikvm -Xmx256m -cp $jarpath org.eclipse.jdt.internal.compiler.batch.Main -proc:none -7 -cp @TERMUX_PREFIX@/share/java/android.jar $@
+# -proc:none to disable annotation processing.
+# -7 for java 1.7 compatibility.
+dalvikvm -Xmx256m \
+         -cp @TERMUX_PREFIX@/share/dex/ecj.jar
+         org.eclipse.jdt.internal.compiler.batch.Main \
+         -proc:none \
+         -7 \
+         -cp @TERMUX_PREFIX@/share/java/android.jar \
+         $@
diff --git a/packages/jack/build.sh b/packages/jack/build.sh
index 8405393f1..a83c739dd 100755
--- a/packages/jack/build.sh
+++ b/packages/jack/build.sh
@@ -4,7 +4,7 @@
 TERMUX_PKG_HOMEPAGE=http://tools.android.com/tech-docs/jackandjill
 TERMUX_PKG_DESCRIPTION="Java Android Compiler Kit"
 TERMUX_PKG_VERSION="1.1-mr2"
-TERMUX_PKG_BUILD_REVISION=3
+TERMUX_PKG_BUILD_REVISION=4
 TERMUX_PKG_PLATFORM_INDEPENDENT=true
 
 termux_step_make () {
diff --git a/packages/jack/jack.sh b/packages/jack/jack.sh
index db43657c0..0be3d65c1 100755
--- a/packages/jack/jack.sh
+++ b/packages/jack/jack.sh
@@ -1,9 +1,5 @@
 #!/bin/sh
 
-# There needs to be a folder at $ANDROID_DATA/dalvik-cache
-export ANDROID_DATA=@TERMUX_PREFIX@/var/android/
-mkdir -p $ANDROID_DATA/dalvik-cache
-
 exec dalvikvm -Xmx256m \
 -Djava.io.tmpdir=@TERMUX_PREFIX@/tmp \
 -cp @TERMUX_PREFIX@/share/dex/jack.jar com.android.jack.Main \
diff --git a/packages/termux-tools/build.sh b/packages/termux-tools/build.sh
index 47144ebac..04048e938 100644
--- a/packages/termux-tools/build.sh
+++ b/packages/termux-tools/build.sh
@@ -1,12 +1,12 @@
 TERMUX_PKG_HOMEPAGE=https://termux.com/
 TERMUX_PKG_DESCRIPTION="Basic system tools for Termux"
-TERMUX_PKG_VERSION=0.27
+TERMUX_PKG_VERSION=0.28
 TERMUX_PKG_PLATFORM_INDEPENDENT=yes
 
 termux_step_make_install () {
 	# Remove LD_LIBRARY_PATH from environment to avoid conflicting
 	# with system libraries that am may link against.
-	for tool in am dalvikvm df getprop logcat ping ping6 ip pm settings; do
+	for tool in am df getprop logcat ping ping6 ip pm settings; do
 		WRAPPER_FILE=$TERMUX_PREFIX/bin/$tool
 		echo '#!/bin/sh' > $WRAPPER_FILE
 
@@ -22,5 +22,6 @@ termux_step_make_install () {
 		chmod +x $TERMUX_PREFIX/bin/$tool
 	done
 
-	cp -p $TERMUX_PKG_BUILDER_DIR/{su,termux-fix-shebang,termux-reload-settings,termux-setup-storage,chsh,termux-open-url} $TERMUX_PREFIX/bin/
+	cp -p $TERMUX_PKG_BUILDER_DIR/{dalvikvm,su,termux-fix-shebang,termux-reload-settings,termux-setup-storage,chsh,termux-open-url} $TERMUX_PREFIX/bin/
+	perl -p -i -e "s%\@TERMUX_PREFIX\@%${TERMUX_PREFIX}%g" $TERMUX_PREFIX/bin/dalvikvm
 }
diff --git a/packages/termux-tools/dalvikvm b/packages/termux-tools/dalvikvm
new file mode 100755
index 000000000..bd36acf6c
--- /dev/null
+++ b/packages/termux-tools/dalvikvm
@@ -0,0 +1,8 @@
+#!/bin/sh
+
+# There needs to be a folder at $ANDROID_DATA/dalvik-cache
+export ANDROID_DATA=@TERMUX_PREFIX@/var/android/
+mkdir -p $ANDROID_DATA/dalvik-cache
+
+unset LD_LIBRARY_PATH
+exec /system/bin/dalvikvm -Djava.io.tmpdir=@TERMUX_PREFIX@/tmp "$@"