--- a/ChangeLog	Fri Feb 21 22:04:31 2014 +0000
+++ b/ChangeLog	Mon Feb 24 15:59:54 2014 +0000
@@ -1,3 +1,10 @@
+2014-02-24  Andrew John Hughes  <gnu.andrew@member.fsf.org>
+
+	PR1684: Build fails with empty PAX_COMMAND
+	* Makefile.am:
+	(ICEDTEA_ENV): Only add PAX_COMMAND when defined.
+	* NEWS: Updated.
+
 2014-02-21  Andrew John Hughes  <gnu.andrew@member.fsf.org>
 
 	* acinclude.m4:

--- a/Makefile.am	Fri Feb 21 22:04:31 2014 +0000
+++ b/Makefile.am	Mon Feb 24 15:59:54 2014 +0000
@@ -514,8 +514,7 @@
 	PCSC_LIBS="${PCSC_LIBS}" \
 	PCSC_CFLAGS="${PCSC_CFLAGS}" \
 	COMPRESS_JARS="${ENABLE_JAR_COMPRESSION}" \
-	ARM32JIT="${ARM32JIT_STATUS}" \
-	PAX_COMMAND="${PAX_COMMAND}"
+	ARM32JIT="${ARM32JIT_STATUS}"
 
 if ENABLE_CACAO
 ICEDTEA_ENV += \
@@ -553,6 +552,11 @@
 	RHINO_JAR="$(abs_top_builddir)/rhino/rhino.jar"
 endif
 
+if WITH_PAX
+ICEDTEA_ENV += \
+	PAX_COMMAND="${PAX_COMMAND}"
+endif
+
 # OpenJDK boot build environment.
 ICEDTEA_ENV_BOOT = $(ICEDTEA_ENV) \
 	BOOTCLASSPATH_CLS_RT="-bootclasspath $(CLS_DIR_BOOT):$(RUNTIME)" \

--- a/NEWS	Fri Feb 21 22:04:31 2014 +0000
+++ b/NEWS	Mon Feb 24 15:59:54 2014 +0000
@@ -159,6 +159,7 @@
   - Remove duplicate ElfFuncDescTable code in elfSymbolTable.hpp
   - PR1677: Update PaX support to detect running PaX kernel and use newer tools
   - PR1679: Allow OpenJDK to build on PaX-enabled kernels
+  - PR1684: Build fails with empty PAX_COMMAND
 * PPC & AIX port
   - Add AIX-specific build instructions to README-ppc.html
   - Added AIX as testing platform for more jtreg tests written in shell-script