diff --git a/source/abseil-cpp/build.sh b/source/abseil-cpp/build.sh
index 45ad96d..da0eb65 100755
--- a/source/abseil-cpp/build.sh
+++ b/source/abseil-cpp/build.sh
@@ -1,62 +1,121 @@
 #!/usr/bin/env bash
-# Copyright 2024 Cloudera Inc.
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-# http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-
-# Exit on non-true return value
-set -e
-# Exit on reference to uninitialized variable
-set -u
-
-set -o pipefail
-
-source $SOURCE_DIR/functions.sh
-THIS_DIR="$( cd "$( dirname "$0" )" && pwd )"
-prepare $THIS_DIR
-
-cd $THIS_DIR
-ABSEIL_CPP_GITHUB_URL=https://github.com/abseil/abseil-cpp.git
-ABSEIL_CPP_SOURCE_DIR=abseil-cpp-$PACKAGE_VERSION
+set -Eeuo pipefail
+shopt -s inherit_errexit 2>/dev/null || true
+
+ts() { date +"%Y-%m-%dT%H:%M:%S%z"; }
+log() { printf "[%s] %s\n" "$(ts)" "$*" >&2; }
+trap 'log "ERROR at ${BASH_SOURCE[0]}:${BASH_LINENO[0]}: ${BASH_COMMAND}"' ERR
+
+: "${SOURCE_DIR:?SOURCE_DIR must be set}"
+source "${SOURCE_DIR}/functions.sh"
+
+THIS_DIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )" && pwd )"
+prepare "${THIS_DIR}"
+cd "${THIS_DIR}"
+
+ABSEIL_CPP_GITHUB_URL="${ABSEIL_CPP_GITHUB_URL:-https://github.com/abseil/abseil-cpp.git}"
+ABSEIL_CPP_MIRROR_URL="${ABSEIL_CPP_MIRROR_URL:-}"
+ABSEIL_CPP_SOURCE_DIR="abseil-cpp-${PACKAGE_VERSION:?PACKAGE_VERSION not set}"
+
+if [[ -z "${BUILD_THREADS:-}" ]]; then
+  if command -v nproc >/dev/null 2>&1; then BUILD_THREADS="$(nproc)"
+  elif command -v sysctl >/dev/null 2>&1; then BUILD_THREADS="$(sysctl -n hw.ncpu 2>/dev/null || echo 4)"
+  else BUILD_THREADS=4; fi
+fi
+
+if command -v ccache >/dev/null 2>&1; then
+  export CC="${CC:-ccache gcc}"
+  export CXX="${CXX:-ccache g++}"
+fi
+
+retry() { local -r m=3; local -i n=0; local d=2; until "$@"; do n=$((n+1)); (( n>=m ))&&return 1; sleep "$d"; d=$((d*2)); done; }
+
+clone_repo() { retry git clone --depth 1 "$1" "$2"; }
+checkout_rev() {
+  local rev="$1"
+  if git rev-parse --verify --quiet "${rev}^{object}" >/dev/null; then
+    git -c advice.detachedHead=false checkout --quiet "${rev}"
+  else
+    retry git fetch --depth 1 origin "${rev}"
+    git -c advice.detachedHead=false checkout --quiet "${rev}"
+  fi
+}
+
 if [[ ! -d "${ABSEIL_CPP_SOURCE_DIR}" ]]; then
-  git clone $ABSEIL_CPP_GITHUB_URL $ABSEIL_CPP_SOURCE_DIR
-  pushd $ABSEIL_CPP_SOURCE_DIR
-  git checkout $PACKAGE_VERSION
-  popd
+  if [[ -n "${ABSEIL_CPP_MIRROR_URL}" ]]; then
+    clone_repo "${ABSEIL_CPP_MIRROR_URL}" "${ABSEIL_CPP_SOURCE_DIR}" || clone_repo "${ABSEIL_CPP_GITHUB_URL}" "${ABSEIL_CPP_SOURCE_DIR}"
+  else
+    clone_repo "${ABSEIL_CPP_GITHUB_URL}" "${ABSEIL_CPP_SOURCE_DIR}"
+  fi
+  pushd "${ABSEIL_CPP_SOURCE_DIR}" >/dev/null
+  checkout_rev "${PACKAGE_VERSION}"
+  popd >/dev/null
+else
+  pushd "${ABSEIL_CPP_SOURCE_DIR}" >/dev/null
+  checkout_rev "${PACKAGE_VERSION}"
+  popd >/dev/null
 fi
 
 if ! needs_build_package; then
-  exit
+  log "No build needed for ${PACKAGE:-abseil-cpp} ${PACKAGE_VERSION}"
+  exit 0
+fi
+
+setup_package_build "${PACKAGE:?PACKAGE not set}" "${PACKAGE_VERSION}"
+
+rm -rf superbuild && mkdir superbuild
+cat > superbuild/CMakeLists.txt <<'EOF'
+cmake_minimum_required(VERSION 3.20)
+project(absl_superbuild)
+include(ExternalProject)
+if(NOT DEFINED ENV{LOCAL_INSTALL})
+  message(FATAL_ERROR "LOCAL_INSTALL env not set")
+endif()
+set(PREFIX $ENV{LOCAL_INSTALL})
+set(SRC_DIR ${CMAKE_SOURCE_DIR}/../${ABSEIL_CPP_SOURCE_DIR})
+if(NOT EXISTS "${SRC_DIR}/CMakeLists.txt")
+  message(FATAL_ERROR "Source dir not found: ${SRC_DIR}")
+endif()
+
+set(COMMON_ARGS
+  -DCMAKE_BUILD_TYPE=Release
+  -DCMAKE_INSTALL_PREFIX=${PREFIX}
+  -DABSL_ENABLE_INSTALL=ON
+  -DABSL_BUILD_TESTING=OFF
+  -DCMAKE_POSITION_INDEPENDENT_CODE=ON
+  -DABSL_PROPAGATE_CXX_STD=ON
+  -DCMAKE_INSTALL_RPATH=${PREFIX}/lib
+  -DCMAKE_INSTALL_RPATH_USE_LINK_PATH=ON
+)
+
+ExternalProject_Add(absl_static
+  SOURCE_DIR "${SRC_DIR}"
+  DOWNLOAD_COMMAND ""
+  CMAKE_ARGS ${COMMON_ARGS} -DBUILD_SHARED_LIBS=OFF
+  BUILD_COMMAND ${CMAKE_COMMAND} --build . -j $ENV{BUILD_THREADS}
+  INSTALL_COMMAND ${CMAKE_COMMAND} --build . --target install -j $ENV{BUILD_THREADS}
+)
+
+ExternalProject_Add(absl_shared
+  SOURCE_DIR "${SRC_DIR}"
+  DOWNLOAD_COMMAND ""
+  CMAKE_ARGS ${COMMON_ARGS} -DBUILD_SHARED_LIBS=ON
+  BUILD_COMMAND ${CMAKE_COMMAND} --build . -j $ENV{BUILD_THREADS}
+  INSTALL_COMMAND ${CMAKE_COMMAND} --build . --target install -j $ENV{BUILD_THREADS}
+)
+
+add_custom_target(install_all ALL DEPENDS absl_static absl_shared)
+EOF
+
+pushd superbuild >/dev/null
+if command -v ninja >/dev/null 2>&1; then
+  wrap cmake -G Ninja -DABSEIL_CPP_SOURCE_DIR="${ABSEIL_CPP_SOURCE_DIR}" .
+  wrap ninja -j"${BUILD_THREADS}"
+else
+  wrap cmake -DABSEIL_CPP_SOURCE_DIR="${ABSEIL_CPP_SOURCE_DIR}" .
+  wrap make -j"${BUILD_THREADS}"
 fi
+popd >/dev/null
 
-setup_package_build $PACKAGE $PACKAGE_VERSION
-
-rm -rf build_static
-mkdir build_static
-pushd build_static
-wrap cmake -DCMAKE_BUILD_TYPE=RELEASE -DCMAKE_INSTALL_PREFIX=$LOCAL_INSTALL \
-     -DABSL_ENABLE_INSTALL=ON -DABSL_BUILD_TESTING=OFF ..
-wrap make VERBOSE=1 -j${BUILD_THREADS:-4}
-wrap make install
-popd
-
-rm -rf build_shared
-mkdir build_shared
-pushd build_shared
-wrap cmake -DBUILD_SHARED_LIBS=ON -DCMAKE_BUILD_TYPE=RELEASE \
-     -DCMAKE_INSTALL_PREFIX=$LOCAL_INSTALL \
-     -DABSL_ENABLE_INSTALL=ON -DABSL_BUILD_TESTING=OFF ..
-wrap make VERBOSE=1 -j${BUILD_THREADS:-4}
-wrap make install
-popd
-
-finalize_package_build $PACKAGE $PACKAGE_VERSION
+finalize_package_build "${PACKAGE}" "${PACKAGE_VERSION}"
+log "Completed ${PACKAGE} ${PACKAGE_VERSION}"