Allow re-targeting of naclports install

libraries/fontconfig-2.7.3/nacl-fontconfig-2.7.3.sh

 #!/bin/bash
 # Copyright (c) 2011 The Native Client Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 # nacl-fontconfig-2.7.3.sh
 #
 # usage:  nacl-fontconfig-2.7.3.sh
 #
 # this script downloads, patches, and builds fontconfig for Native Client.
@@ skipping 26 matching lines @@
 }
 
 
 CustomConfigureStep() {
   Banner "Configuring ${PACKAGE_NAME}"
   # export the nacl tools
   export CC=${NACLCC}
   export CXX=${NACLCXX}
   export AR=${NACLAR}
   export RANLIB=${NACLRANLIB}
-  export PKG_CONFIG_PATH=${NACL_SDK_USR_LIB}/pkgconfig
-  export PKG_CONFIG_LIBDIR=${NACL_SDK_USR_LIB}
-  export PATH=${NACL_BIN_PATH}:${NACL_SDK_USR}/bin:${PATH};
+  export PKG_CONFIG_PATH=${NACLPORTS_LIBDIR}/pkgconfig
+  export PKG_CONFIG_LIBDIR=${NACLPORTS_LIBDIR}
+  export PATH=${NACL_BIN_PATH}:${NACLPORTS_PREFIX}/bin:${PATH};
   ChangeDir ${NACL_PACKAGES_REPOSITORY}/${PACKAGE_NAME}
   chmod a+x install-sh
   cd ${PACKAGE_NAME}-build
   # We'll not build host anyway
   CC_FOR_BUILD=${NACL_PACKAGES_REPOSITORY}/${PACKAGE_NAME}/pseudo-gcc \
   ../configure \
     --host=nacl \
     --disable-shared \
     --disable-docs \
-    --prefix=${NACL_SDK_USR} \
-    --exec-prefix=${NACL_SDK_USR} \
-    --libdir=${NACL_SDK_USR_LIB} \
-    --oldincludedir=${NACL_SDK_USR_INCLUDE} \
+    --prefix=${NACLPORTS_PREFIX} \
+    --exec-prefix=${NACLPORTS_PREFIX} \
+    --libdir=${NACLPORTS_LIBDIR} \
+    --oldincludedir=${NACLPORTS_INCLUDE} \
     --with-http=off \
     --with-html=off \
     --with-ftp=off \
     --with-x=no \
     --with-arch=x86
 }
 
 
 CustomPatchMakefileStep() {
   # fontconfig wants to build executable tools.  These tools aren't needed
@@ skipping 13 matching lines @@
   CustomConfigureStep
   CustomPatchMakefileStep
   DefaultBuildStep
   DefaultInstallStep
   DefaultCleanUpStep
 }
 
 
 CustomPackageInstall
 exit 0