--- a/ChangeLog	Fri Jul 17 19:49:37 2015 +0100
+++ b/ChangeLog	Fri Jul 17 19:59:09 2015 +0100
@@ -1,3 +1,16 @@
+2015-07-13  Andrew John Hughes  <gnu_andrew@member.fsf.org>
+
+	PR2499: Update remove-intree-libraries.sh script
+	* NEWS: Updated.
+	* acinclude.m4:
+	(IT_ENABLE_SUNEC): Rename enable_sunec to
+	ENABLE_SUNEC and substitute into autoconf
+	generated files.
+	* remove-intree-libraries.sh.in:
+	Update enablement tests following PR1661. Check
+	that system library code exists first before deleting
+	and fail if not.
+
 2015-07-13  Andrew John Hughes  <gnu_andrew@member.fsf.org>
 
 	PR2390: Make elliptic curve removal

--- a/NEWS	Fri Jul 17 19:49:37 2015 +0100
+++ b/NEWS	Fri Jul 17 19:59:09 2015 +0100
@@ -31,6 +31,7 @@
   - PR2367: 7 no longer builds with 6 - Util is not public in sun.management
   - PR2390: Make elliptic curve removal optional
   - PR2395: Path to jvm.cfg is wrong in add-systemtap-boot
+  - PR2499: Update remove-intree-libraries.sh script
 * CACAO
   - PR2380: Raise javadoc and JAVAC_FLAGS memory limits for CACAO
 * PPC & AIX port

--- a/acinclude.m4	Fri Jul 17 19:49:37 2015 +0100
+++ b/acinclude.m4	Fri Jul 17 19:59:09 2015 +0100
@@ -2688,19 +2688,18 @@
   [
     case "${enableval}" in
       yes)
-        enable_sunec=yes
+        ENABLE_SUNEC=yes
         ;;
       *)
-        enable_sunec=no
+        ENABLE_SUNEC=no
         ;;
     esac
   ],
   [
-    enable_sunec=no
+    ENABLE_SUNEC=no
   ])
-  AC_MSG_RESULT([$enable_sunec])
-  AM_CONDITIONAL([ENABLE_SUNEC], test x"${enable_sunec}" = "xyes")
-  if test x"${enable_sunec}" = "xyes"; then
+  AC_MSG_RESULT([$ENABLE_SUNEC])
+  if test x"${ENABLE_SUNEC}" = "xyes"; then
     PKG_CHECK_MODULES(NSS_SOFTOKN, nss-softokn >= 3.16.1, [NSS_SOFTOKN_FOUND=yes], [NSS_SOFTOKN_FOUND=no])
     PKG_CHECK_MODULES(NSS_JAVA, nss-java, [NSS_JAVA_FOUND=yes], [NSS_JAVA_FOUND=no])
     if test "x${NSS_SOFTOKN_FOUND}" = "xyes"; then
@@ -2715,6 +2714,8 @@
     AC_SUBST(SUNEC_CFLAGS)
     AC_SUBST(SUNEC_LIBS)
   fi
+  AM_CONDITIONAL([ENABLE_SUNEC], test x"${ENABLE_SUNEC}" = "xyes")
+  AC_SUBST(ENABLE_SUNEC)
 ])
 
 AC_DEFUN_ONCE([IT_CHECK_TOOLS_JAR_EXISTS],

--- a/remove-intree-libraries.sh.in	Fri Jul 17 19:49:37 2015 +0100
+++ b/remove-intree-libraries.sh.in	Fri Jul 17 19:59:09 2015 +0100
@@ -8,27 +8,47 @@
 LCMS_SRC=openjdk/jdk/src/share/native/sun/java2d/cmm/lcms
 PCSC_SRC=openjdk/jdk/src/solaris/native/sun/security/smartcardio/MUSCLE
 
-if test "x@ENABLE_SYSTEM_ZLIB@" = "xyes"; then
+if test "x@ENABLE_SYSTEM_ZLIB@" = "xtrue"; then
+  if [ ! -d ${ZIP_SRC} ]; then
+      echo "${ZIP_SRC} does not exist. Refusing to proceed."
+      exit -1;
+  fi
   echo "Removing zlib"
   rm -rvf ${ZIP_SRC}
 fi
 
-if test "x@ENABLE_SYSTEM_JPEG@" = "xyes"; then
+if test "x@ENABLE_SYSTEM_JPEG@" = "xtrue"; then
+  if [ ! -d ${JPEG_SRC} ]; then
+      echo "${JPEG_SRC} does not exist. Refusing to proceed."
+      exit -2;
+  fi
   echo "Removing libjpeg"
   rm -rvf ${JPEG_SRC}
 fi
 
-if test "x@ENABLE_SYSTEM_GIF@" = "xyes"; then
+if test "x@ENABLE_SYSTEM_GIF@" = "xtrue"; then
+  if [ ! -d ${GIF_SRC} ]; then
+      echo "${GIF_SRC} does not exist. Refusing to proceed."
+      exit -3;
+  fi
   echo "Removing giflib"
   rm -rvf ${GIF_SRC}
 fi
 
-if test "x@ENABLE_SYSTEM_PNG@" = "xyes"; then
+if test "x@ENABLE_SYSTEM_PNG@" = "xtrue"; then
+  if [ ! -d ${PNG_SRC} ]; then
+      echo "${PNG_SRC} does not exist. Refusing to proceed."
+      exit -4;
+  fi
   echo "Removing libpng"
   rm -rvf ${PNG_SRC}
 fi
 
-if test "x@ENABLE_SYSTEM_LCMS@" = "xyes"; then
+if test "x@ENABLE_SYSTEM_LCMS@" = "xtrue"; then
+  if [ ! -f ${LCMS_SRC}/cmscam02.c ]; then
+      echo "${LCMS_SRC}/cmscam02.c does not exist. Refusing to proceed."
+      exit -5;
+  fi
   echo "Removing lcms"
   rm -vf ${LCMS_SRC}/cmscam02.c
   rm -vf ${LCMS_SRC}/cmscgats.c
@@ -59,7 +79,11 @@
   rm -vf ${LCMS_SRC}/lcms2_plugin.h
 fi
 
-if test "x@ENABLE_SYSTEM_PCSC@" = "xyes"; then
+if test "x@ENABLE_SYSTEM_PCSC@" = "xtrue"; then
+  if [ ! -d ${PCSC_SRC} ]; then
+      echo "${PCSC_SRC} does not exist. Refusing to proceed."
+      exit -6;
+  fi
   echo "Removing libpcsc headers"
   rm -rvf ${PCSC_SRC}
 fi