Enable glibc shared library support for zlib.

libraries/zlib/nacl-zlib.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-zlib-1.2.3.sh
-#
-# usage:  nacl-zlib-1.2.3.sh
-#
-# this script downloads, patches, and builds zlib for Native Client 
-#
 
 source pkg_info
 source ../../build_tools/common.sh
 
 
 CustomConfigureStep() {
   Banner "Configuring ${PACKAGE_NAME}"
   ChangeDir ${NACL_PACKAGES_REPOSITORY}/${PACKAGE_NAME}
   # TODO: side-by-side install
-  CC=${NACLCC} AR="${NACLAR} -r" RANLIB=${NACLRANLIB} CFLAGS="-Dunlink=puts" ./configure\
-     --prefix=${NACLPORTS_PREFIX}
+  local CONFIGURE_ARGS="--prefix=${NACLPORTS_PREFIX}"
+  local CFLAGS="-Dunlink=puts"
+  if [ "${NACL_GLIBC}" = "1" -a $# -gt 0 ]; then
+      CONFIGURE_ARGS="${CONFIGURE_ARGS} --shared"
+      CFLAGS="${CFLAGS} -fPIC"
+  fi
+  CC=${NACLCC} AR="${NACLAR} -r" RANLIB=${NACLRANLIB} CFLAGS="${CFLAGS}" \
+     LogExecute ./configure ${CONFIGURE_ARGS}
+  if [ ${NACL_ARCH} = "pnacl" ]; then
+    export MAKEFLAGS="EXE=.pexe"
+    EXECUTABLES="minigzip.pexe example.pexe"
+  else
+    export MAKEFLAGS="EXE=.nexe"
+    EXECUTABLES="minigzip.nexe example.nexe"
+  fi
 }
 
 
+TestStep() {
+  if [ $NACL_ARCH = "arm" ]; then
+    # no sel_ldr for arm
+    return
+  fi
+
+  if [ "${NACL_GLIBC}" = "1" ]; then
+    # Tests do not currently run on GLIBC due to fdopen() not working
+    # TODO(sbc): Remove this once glibc is fixed:
+    # https://code.google.com/p/nativeclient/issues/detail?id=3362
+    return
+  fi
+
+  if [ $NACL_ARCH = "pnacl" ]; then
+    WriteSelLdrScript minigzip minigzip.pexe.x86-64.nexe
+    WriteSelLdrScript example example.pexe.x86-64.nexe
+  else
+    WriteSelLdrScript minigzip minigzip.nexe
+    WriteSelLdrScript example example.nexe
+  fi
+  export LD_LIBRARY_PATH=.
+  if echo "hello world" | ./minigzip | ./minigzip -d; then
+    echo '  *** minigzip test OK ***' ; \
+  else
+    echo '  *** minigzip test FAILED ***' ; \
+    exit 1
+  fi
+
+  # This second test does not yet work on nacl (gzopen fails)
+  #if ./example; then \
+    #echo '  *** zlib test OK ***'; \
+  #else \
+    #echo '  *** zlib test FAILED ***'; \
+    #exit 1
+  #fi
+}
+
+
 CustomPackageInstall() {
   DefaultPreInstallStep
   DefaultDownloadStep
   DefaultExtractStep
   # zlib doesn't need patching, so no patch step
   CustomConfigureStep
   DefaultBuildStep
+  DefaultTranslateStep
+  DefaultValidateStep
+  TestStep
   DefaultInstallStep
+  if [ "${NACL_GLIBC}" = "1" ]; then
+    CustomConfigureStep shared
+    DefaultBuildStep
+    Validate libz.so.1
+    DefaultValidateStep
+    TestStep
+    DefaultInstallStep
+  fi
   DefaultCleanUpStep
 }
 
 
 CustomPackageInstall
 exit 0