diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 9439ce1..946bbec 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -18,22 +18,22 @@ jobs:
       matrix:
         include:
           - os: ubuntu-22.04
-            cxx: "clang++-14"
+            cxx: "clang++-15"
             link: "dynamic"
-            optimization: "size"
+            optimization: "debug"
             assert: "debug"
             coverage: "nocov"
             boost: "--build-boost"
             icu: ""
             zmq: "--build-zmq"
-            cc: "clang-14"
-            flags: "-Os -fPIE"
+            cc: "clang-15"
+            flags: "-Og -fPIE"
             options: "--enable-isystem"
             packager: "apt"
             packages: ""
 
           - os: ubuntu-22.04
-            cxx: "clang++-14"
+            cxx: "clang++-15"
             link: "static"
             optimization: "size"
             assert: "ndebug"
@@ -41,7 +41,7 @@ jobs:
             boost: "--build-boost"
             icu: "--build-icu --with-icu"
             zmq: "--build-zmq"
-            cc: "clang-14"
+            cc: "clang-15"
             flags: "-Os -fPIE"
             options: "--enable-isystem"
             packager: "apt"
@@ -65,20 +65,20 @@ jobs:
           - os: ubuntu-22.04
             cxx: "g++-11"
             link: "static"
-            optimization: "debug"
+            optimization: "size"
             assert: "ndebug"
             coverage: "nocov"
             boost: "--build-boost"
             icu: "--build-icu --with-icu"
             zmq: "--build-zmq"
             cc: "gcc-11"
-            flags: "-Og -fPIE"
+            flags: "-Os -fPIE"
             options: "--enable-isystem"
             packager: "apt"
             packages: ""
 
           - os: macos-latest
-            cxx: "clang++-14"
+            cxx: "clang++"
             link: "dynamic"
             optimization: "size"
             assert: "ndebug"
@@ -86,14 +86,14 @@ jobs:
             boost: "--build-boost"
             icu: "--with-icu"
             zmq: "--build-zmq"
-            cc: "clang-14"
+            cc: "clang"
             flags: "-Os -fPIE"
             options: "--enable-isystem"
             packager: "brew"
             packages: "icu4c"
 
           - os: macos-latest
-            cxx: "clang++-14"
+            cxx: "clang++"
             link: "static"
             optimization: "size"
             assert: "ndebug"
@@ -101,7 +101,7 @@ jobs:
             boost: "--build-boost"
             icu: "--build-icu --with-icu"
             zmq: "--build-zmq"
-            cc: "clang-14"
+            cc: "clang"
             flags: "-Os -fvisibility=hidden -fPIE"
             options: "--enable-isystem"
             packager: "brew"
@@ -119,7 +119,7 @@ jobs:
 
     steps:
       - name: Checkout repository
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
 
       - name: Prepare toolchain [generic]
         run: |
@@ -140,7 +140,7 @@ jobs:
         shell: bash
         run: |
           WORKSPACE_SUBPATH="${GITHUB_WORKSPACE%libbitcoin-protocol}"
-          echo "LIBBITCOIN_SRC_PATH=$WORKSPACE_SUBPATH" >> $GITHUB_ENV
+          echo "LIBBITCOIN_SRC_PATH=${WORKSPACE_SUBPATH}" >> $GITHUB_ENV
           if [[ ${{ matrix.assert }} == 'ndebug' ]]; then
             echo "ASSERT_NDEBUG=--enable-ndebug" >> $GITHUB_ENV
           else
@@ -152,9 +152,15 @@ jobs:
             echo "LINKAGE=--disable-shared" >> $GITHUB_ENV
           fi
           if [[ ${{ matrix.link }} == 'dynamic' ]]; then
-            echo "LDFLAGS=-Wl,-rpath,$WORKSPACE_SUBPATH/prefix/lib" >> $GITHUB_ENV
+            echo "LDFLAGS=-Wl,-rpath,${WORKSPACE_SUBPATH}prefix/lib" >> $GITHUB_ENV
           fi
 
+      - name: Display Compiler details
+        shell: bash
+        run: |
+          ${CC} -v
+          ${CXX} -v
+
       - name: Display CPU details
         if: ${{ (runner.os == 'Linux') }}
         shell: bash
@@ -164,8 +170,8 @@ jobs:
       - name: Execute install.sh
         run: >
           ./install.sh
-          --build-dir=$LIBBITCOIN_SRC_PATH ${{ matrix.options }}
-          --prefix=$LIBBITCOIN_SRC_PATH/prefix
+          --build-dir=${{ env.LIBBITCOIN_SRC_PATH }} ${{ matrix.options }}
+          --prefix=${{ env.LIBBITCOIN_SRC_PATH }}prefix
           ${{ env.LINKAGE }}
           ${{ env.ASSERT_NDEBUG }}
           ${{ matrix.boost }}
@@ -242,22 +248,22 @@ jobs:
       matrix:
         include:
           - os: ubuntu-22.04
-            cxx: "clang++-14"
+            cxx: "clang++-15"
             link: "dynamic"
-            optimization: "size"
+            optimization: "debug"
             assert: "debug"
             coverage: "nocov"
             boost: "--build-boost"
             icu: ""
             zmq: "--build-zmq"
-            cc: "clang-14"
-            flags: "-Os -fPIE"
+            cc: "clang-15"
+            flags: "-Og -fPIE"
             options: ""
             packager: "apt"
             packages: ""
 
           - os: ubuntu-22.04
-            cxx: "clang++-14"
+            cxx: "clang++-15"
             link: "static"
             optimization: "size"
             assert: "ndebug"
@@ -265,7 +271,7 @@ jobs:
             boost: "--build-boost"
             icu: "--build-icu --with-icu"
             zmq: "--build-zmq"
-            cc: "clang-14"
+            cc: "clang-15"
             flags: "-Os -fPIE"
             options: ""
             packager: "apt"
@@ -289,20 +295,20 @@ jobs:
           - os: ubuntu-22.04
             cxx: "g++-11"
             link: "static"
-            optimization: "debug"
+            optimization: "size"
             assert: "ndebug"
             coverage: "nocov"
             boost: "--build-boost"
             icu: "--build-icu --with-icu"
             zmq: "--build-zmq"
             cc: "gcc-11"
-            flags: "-Og -fPIE"
+            flags: "-Os -fPIE"
             options: ""
             packager: "apt"
             packages: ""
 
           - os: macos-latest
-            cxx: "clang++-14"
+            cxx: "clang++"
             link: "dynamic"
             optimization: "size"
             assert: "ndebug"
@@ -310,14 +316,14 @@ jobs:
             boost: "--build-boost"
             icu: "--with-icu"
             zmq: "--build-zmq"
-            cc: "clang-14"
+            cc: "clang"
             flags: "-Os -fPIE"
             options: ""
             packager: "brew"
             packages: "icu4c"
 
           - os: macos-latest
-            cxx: "clang++-14"
+            cxx: "clang++"
             link: "static"
             optimization: "size"
             assert: "ndebug"
@@ -325,7 +331,7 @@ jobs:
             boost: "--build-boost"
             icu: "--build-icu --with-icu"
             zmq: "--build-zmq"
-            cc: "clang-14"
+            cc: "clang"
             flags: "-Os -fvisibility=hidden -fPIE"
             options: ""
             packager: "brew"
@@ -343,7 +349,7 @@ jobs:
 
     steps:
       - name: Checkout repository
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
 
       - name: Prepare toolchain [generic]
         run: |
@@ -364,7 +370,7 @@ jobs:
         shell: bash
         run: |
           WORKSPACE_SUBPATH="${GITHUB_WORKSPACE%libbitcoin-protocol}"
-          echo "LIBBITCOIN_SRC_PATH=$WORKSPACE_SUBPATH" >> $GITHUB_ENV
+          echo "LIBBITCOIN_SRC_PATH=${WORKSPACE_SUBPATH}" >> $GITHUB_ENV
           if [[ ${{ matrix.packager }} == 'brew' ]]; then
             echo "CMAKE_LIBRARY_PATH=/usr/local/lib" >> $GITHUB_ENV
           fi
@@ -379,9 +385,15 @@ jobs:
             echo "LINKAGE=--disable-shared" >> $GITHUB_ENV
           fi
           if [[ ${{ matrix.link }} == 'dynamic' ]]; then
-            echo "LDFLAGS=-Wl,-rpath,$WORKSPACE_SUBPATH/prefix/lib" >> $GITHUB_ENV
+            echo "LDFLAGS=-Wl,-rpath,${WORKSPACE_SUBPATH}prefix/lib" >> $GITHUB_ENV
           fi
 
+      - name: Display Compiler details
+        shell: bash
+        run: |
+          ${CC} -v
+          ${CXX} -v
+
       - name: Display CPU details
         if: ${{ (runner.os == 'Linux') }}
         shell: bash
@@ -391,8 +403,8 @@ jobs:
       - name: Execute install-cmake.sh
         run: >
           ./install-cmake.sh
-          --build-dir=$LIBBITCOIN_SRC_PATH ${{ matrix.options }}
-          --prefix=$LIBBITCOIN_SRC_PATH/prefix
+          --build-dir=${{ env.LIBBITCOIN_SRC_PATH }} ${{ matrix.options }}
+          --prefix=${{ env.LIBBITCOIN_SRC_PATH }}prefix
           ${{ env.LINKAGE }}
           ${{ env.ASSERT_NDEBUG }}
           ${{ matrix.boost }}
@@ -480,23 +492,23 @@ jobs:
         include:
           - os: ubuntu-22.04
             preset: "nix-gnu-debug-shared"
-            cxx: "clang++-14"
+            cxx: "clang++-15"
             link: "dynamic"
-            optimization: "size"
+            optimization: "debug"
             assert: "debug"
             coverage: "nocov"
             boost: "--build-boost"
             icu: ""
             zmq: "--build-zmq"
-            cc: "clang-14"
-            flags: "-Os -fPIE"
+            cc: "clang-15"
+            flags: "-Og -fPIE"
             options: ""
             packager: "apt"
             packages: ""
 
           - os: ubuntu-22.04
             preset: "nix-gnu-release-static-size"
-            cxx: "clang++-14"
+            cxx: "clang++-15"
             link: "static"
             optimization: "size"
             assert: "ndebug"
@@ -504,7 +516,7 @@ jobs:
             boost: "--build-boost"
             icu: "--build-icu --with-icu"
             zmq: "--build-zmq"
-            cc: "clang-14"
+            cc: "clang-15"
             flags: "-Os -fPIE"
             options: ""
             packager: "apt"
@@ -538,7 +550,7 @@ jobs:
 
     steps:
       - name: Checkout repository
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
 
       - name: Prepare toolchain [generic]
         run: |
@@ -559,7 +571,7 @@ jobs:
         shell: bash
         run: |
           WORKSPACE_SUBPATH="${GITHUB_WORKSPACE%libbitcoin-protocol}"
-          echo "LIBBITCOIN_SRC_PATH=$WORKSPACE_SUBPATH" >> $GITHUB_ENV
+          echo "LIBBITCOIN_SRC_PATH=${WORKSPACE_SUBPATH}" >> $GITHUB_ENV
           if [[ ${{ matrix.packager }} == 'brew' ]]; then
             echo "CMAKE_LIBRARY_PATH=/usr/local/lib" >> $GITHUB_ENV
           fi
@@ -574,9 +586,15 @@ jobs:
             echo "LINKAGE=--disable-shared" >> $GITHUB_ENV
           fi
           if [[ ${{ matrix.link }} == 'dynamic' ]]; then
-            echo "LDFLAGS=-Wl,-rpath,$WORKSPACE_SUBPATH/prefix/${{ matrix.preset }}/lib" >> $GITHUB_ENV
+            echo "LDFLAGS=-Wl,-rpath,${WORKSPACE_SUBPATH}prefix/${{ matrix.preset }}/lib" >> $GITHUB_ENV
           fi
 
+      - name: Display Compiler details
+        shell: bash
+        run: |
+          ${CC} -v
+          ${CXX} -v
+
       - name: Display CPU details
         if: ${{ (runner.os == 'Linux') }}
         shell: bash
@@ -586,8 +604,8 @@ jobs:
       - name: Execute install-cmakepresets.sh
         run: >
           ./install-cmakepresets.sh
-          --build-dir=$LIBBITCOIN_SRC_PATH ${{ matrix.options }}
-          --prefix=$LIBBITCOIN_SRC_PATH/prefix/${{ matrix.preset }}
+          --build-dir=${{ env.LIBBITCOIN_SRC_PATH }} ${{ matrix.options }}
+          --prefix=${{ env.LIBBITCOIN_SRC_PATH }}prefix/${{ matrix.preset }}
           --preset=${{ matrix.preset }}
           ${{ env.LINKAGE }}
           ${{ env.ASSERT_NDEBUG }}
@@ -706,7 +724,7 @@ jobs:
           msbuild-architecture: x64
 
       - name: Checkout repository
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
 
       - name: Initialize SDK
         shell: powershell
diff --git a/builds/cmake/CMakeLists.txt b/builds/cmake/CMakeLists.txt
index 7965de2..fdec50c 100644
--- a/builds/cmake/CMakeLists.txt
+++ b/builds/cmake/CMakeLists.txt
@@ -7,7 +7,7 @@
 
 # libbitcoin-protocol project configuration.
 #------------------------------------------------------------------------------
-cmake_minimum_required(VERSION 3.5 FATAL_ERROR)
+cmake_minimum_required(VERSION 3.18 FATAL_ERROR)
 
 project(libbitcoin-protocol LANGUAGES C CXX)
 
@@ -18,6 +18,7 @@ include(CheckIncludeFiles)
 include(CheckSymbolExists)
 include(CheckCXXCompilerFlag)
 include(CheckCXXSourceCompiles)
+include(CheckLinkerFlag)
 
 set_property(GLOBAL PROPERTY USE_FOLDERS ON)
 
@@ -142,63 +143,88 @@ find_package( Boost 1.76.0 REQUIRED COMPONENTS
 
 set( boost_unit_test_framework_LIBS "-lboost_unit_test_framework" )
 
-if (enable-ndebug)
-    set( Boost_LIBRARY_DIR "${Boost_LIBRARY_DIR_DEBUG}" )
-else ()
-    set( Boost_LIBRARY_DIR "${Boost_LIBRARY_DIR_RELEASE}" )
-endif()
+set( Boost_LIBRARY_DIR $<IF:$<BOOL:${enable-ndebug}>,"${Boost_LIBRARY_DIR_RELEASE}","${Boost_LIBRARY_DIR_DEBUG}">)
 
 set( boost_CPPFLAGS "-I${Boost_INCLUDE_DIR}" )
 set( boost_LDFLAGS "-L${Boost_LIBRARY_DIR}" )
 
 # Find zmq
 #------------------------------------------------------------------------------
-find_package( Zmq 4.3.4 REQUIRED )
+find_package( Zmq 4.3.5 REQUIRED )
 
 # Find bitcoin-system
 #------------------------------------------------------------------------------
 find_package( Bitcoin-System 4.0.0 REQUIRED )
 
-# Define project common includes directories
+# Define project common includes for build.
 #------------------------------------------------------------------------------
 if (BUILD_SHARED_LIBS)
-    include_directories( SYSTEM
-        ${zmq_INCLUDE_DIRS}
-        ${bitcoin_system_INCLUDE_DIRS} )
+    set( zmq_FOR_BUILD_INCLUDE_DIRS ${zmq_INCLUDE_DIRS} CACHE STRING "Placeholder" )
+    set( bitcoin_system_FOR_BUILD_INCLUDE_DIRS ${bitcoin_system_INCLUDE_DIRS} CACHE STRING "Placeholder" )
 else()
-    include_directories( SYSTEM
-        ${zmq_STATIC_INCLUDE_DIRS}
-        ${bitcoin_system_STATIC_INCLUDE_DIRS} )
+    set( zmq_FOR_BUILD_INCLUDE_DIRS ${zmq_STATIC_INCLUDE_DIRS} CACHE STRING "Placeholder" )
+    set( bitcoin_system_FOR_BUILD_INCLUDE_DIRS ${bitcoin_system_STATIC_INCLUDE_DIRS} CACHE STRING "Placeholder" )
 endif()
 
-# Define project common library directories
+# Define project common includes directories
+#------------------------------------------------------------------------------
+include_directories( SYSTEM
+    ${zmq_FOR_BUILD_INCLUDE_DIRS}
+    ${bitcoin_system_FOR_BUILD_INCLUDE_DIRS} )
+
+# Define project common library directories for build.
 #------------------------------------------------------------------------------
 if (BUILD_SHARED_LIBS)
-    link_directories(
-        ${zmq_LIBRARY_DIRS}
-        ${bitcoin_system_LIBRARY_DIRS} )
+    set( zmq_FOR_BUILD_LIBRARY_DIRS ${zmq_LIBRARY_DIRS} CACHE STRING "Placeholder" )
+    set( bitcoin_system_FOR_BUILD_LIBRARY_DIRS ${bitcoin_system_LIBRARY_DIRS} CACHE STRING "Placeholder" )
 else()
-    link_directories(
-        ${zmq_STATIC_LIBRARY_DIRS}
-        ${bitcoin_system_STATIC_LIBRARY_DIRS} )
+    set( zmq_FOR_BUILD_LIBRARY_DIRS ${zmq_STATIC_LIBRARY_DIRS} CACHE STRING "Placeholder" )
+    set( bitcoin_system_FOR_BUILD_LIBRARY_DIRS ${bitcoin_system_STATIC_LIBRARY_DIRS} CACHE STRING "Placeholder" )
+endif()
+
+# Define project common library directories
+#------------------------------------------------------------------------------
+link_directories(
+    ${zmq_FOR_BUILD_LIBRARY_DIRS}
+    ${bitcoin_system_FOR_BUILD_LIBRARY_DIRS} )
+
+# Define project common linker flags.
+#------------------------------------------------------------------------------
+check_linker_flag(CXX "-no_fixup_chains" "no_fixup_chains_FOUND")
+
+if (no_fixup_chains_FOUND)
+    add_link_options("-no_fixup_chains")
+endif()
+
+check_linker_flag(CXX "-fstack-protector" "fstack_protector_FOUND")
+
+if (fstack_protector_FOUND)
+    add_link_options("-fstack-protector")
+endif()
+
+check_linker_flag(CXX "-fstack-protector-all" "fstack_protector_all_FOUND")
+
+if (fstack_protector_all_FOUND)
+    add_link_options("-fstack-protector-all")
 endif()
 
-# Define project common libraries/linker flags.
+
+# Define common library usage for build.
 #------------------------------------------------------------------------------
 if (BUILD_SHARED_LIBS)
-    link_libraries(
-        "-fstack-protector"
-        "-fstack-protector-all"
-        ${zmq_LIBRARIES}
-        ${bitcoin_system_LIBRARIES} )
+    set( zmq_FOR_BUILD_LIBRARIES ${zmq_LIBRARIES} CACHE STRING "Placeholder" )
+    set( bitcoin_system_FOR_BUILD_LIBRARIES ${bitcoin_system_LIBRARIES} CACHE STRING "Placeholder" )
 else()
-    link_libraries(
-        "-fstack-protector"
-        "-fstack-protector-all"
-        ${zmq_STATIC_LIBRARIES}
-        ${bitcoin_system_STATIC_LIBRARIES} )
+    set( zmq_FOR_BUILD_LIBRARIES ${zmq_STATIC_LIBRARIES} CACHE STRING "Placeholder" )
+    set( bitcoin_system_FOR_BUILD_LIBRARIES ${bitcoin_system_STATIC_LIBRARIES} CACHE STRING "Placeholder" )
 endif()
 
+# Define project common libraries.
+#------------------------------------------------------------------------------
+link_libraries(
+    ${zmq_FOR_BUILD_LIBRARIES}
+    ${bitcoin_system_FOR_BUILD_LIBRARIES} )
+
 # Define ${CANONICAL_LIB_NAME} project.
 #------------------------------------------------------------------------------
 add_library( ${CANONICAL_LIB_NAME}
@@ -217,35 +243,42 @@ add_library( ${CANONICAL_LIB_NAME}
     "../../src/zmq/socket.cpp"
     "../../src/zmq/worker.cpp" )
 
-# ${CANONICAL_LIB_NAME} project specific include directories.
+# ${CANONICAL_LIB_NAME} project specific include directory normalization for build.
 #------------------------------------------------------------------------------
 if (BUILD_SHARED_LIBS)
-    target_include_directories( ${CANONICAL_LIB_NAME} PRIVATE
-        "../../include"
-        ${zmq_INCLUDE_DIRS}
-        ${bitcoin_system_INCLUDE_DIRS} )
+    set( zmq_FOR_BUILD_INCLUDE_DIRS ${zmq_INCLUDE_DIRS} CACHE STRING "Placeholder" )
+    set( bitcoin_system_FOR_BUILD_INCLUDE_DIRS ${bitcoin_system_INCLUDE_DIRS} CACHE STRING "Placeholder" )
 else()
-    target_include_directories( ${CANONICAL_LIB_NAME} PRIVATE
-        "../../include"
-        ${zmq_STATIC_INCLUDE_DIRS}
-        ${bitcoin_system_STATIC_INCLUDE_DIRS} )
+    set( zmq_FOR_BUILD_INCLUDE_DIRS ${zmq_STATIC_INCLUDE_DIRS} CACHE STRING "Placeholder" )
+    set( bitcoin_system_FOR_BUILD_INCLUDE_DIRS ${bitcoin_system_STATIC_INCLUDE_DIRS} CACHE STRING "Placeholder" )
 endif()
 
+# ${CANONICAL_LIB_NAME} project specific include directories.
+#------------------------------------------------------------------------------
+target_include_directories( ${CANONICAL_LIB_NAME} PRIVATE
+    "../../include"
+    ${zmq_FOR_BUILD_INCLUDE_DIRS}
+    ${bitcoin_system_FOR_BUILD_INCLUDE_DIRS} )
+
 target_include_directories( ${CANONICAL_LIB_NAME} PUBLIC
 "../../include" )
 
-# ${CANONICAL_LIB_NAME} project specific libraries/linker flags.
+# ${CANONICAL_LIB_NAME} project specific libraries noramalization for build.
 #------------------------------------------------------------------------------
 if (BUILD_SHARED_LIBS)
-    target_link_libraries( ${CANONICAL_LIB_NAME}
-        ${zmq_LIBRARIES}
-        ${bitcoin_system_LIBRARIES} )
+    set( zmq_FOR_BUILD_LIBRARIES ${zmq_LIBRARIES} CACHE STRING "Placeholder" )
+    set( bitcoin_system_FOR_BUILD_LIBRARIES ${bitcoin_system_LIBRARIES} CACHE STRING "Placeholder" )
 else()
-    target_link_libraries( ${CANONICAL_LIB_NAME}
-        ${zmq_STATIC_LIBRARIES}
-        ${bitcoin_system_STATIC_LIBRARIES} )
+    set( zmq_FOR_BUILD_LIBRARIES ${zmq_STATIC_LIBRARIES} CACHE STRING "Placeholder" )
+    set( bitcoin_system_FOR_BUILD_LIBRARIES ${bitcoin_system_STATIC_LIBRARIES} CACHE STRING "Placeholder" )
 endif()
 
+# ${CANONICAL_LIB_NAME} project specific libraries/linker flags.
+#------------------------------------------------------------------------------
+target_link_libraries( ${CANONICAL_LIB_NAME}
+    ${zmq_FOR_BUILD_LIBRARIES}
+    ${bitcoin_system_FOR_BUILD_LIBRARIES} )
+
 # Define libbitcoin-protocol-test project.
 #------------------------------------------------------------------------------
 if (with-tests)
diff --git a/configure.ac b/configure.ac
index 3de68c7..99f9b0c 100644
--- a/configure.ac
+++ b/configure.ac
@@ -192,6 +192,12 @@ AS_CASE([${CC}], [*clang*],
     [AX_CHECK_COMPILE_FLAG([-Wno-mismatched-tags],
         [CXXFLAGS="$CXXFLAGS -Wno-mismatched-tags"])])
 
+# Address -undefined dynamic_lookup MacOS error.
+#------------------------------------------------------------------------------
+AS_CASE([${CC}], [*],
+    [AX_CHECK_LINK_FLAG([-no_fixup_chains],
+        [LDFLAGS="$LDFLAGS -no_fixup_chains"])])
+
 # Protect stack.
 #------------------------------------------------------------------------------
 AS_CASE([${CC}], [*],
@@ -231,13 +237,13 @@ AS_CASE([${with_tests}], [yes],
      AC_MSG_NOTICE([boost_unit_test_framework_LIBS : ${boost_unit_test_framework_LIBS}])],
     [AC_SUBST([boost_unit_test_framework_LIBS], [])])
 
-# Require zmq of at least version 4.3.4 and output ${zmq_CPPFLAGS/LIBS/PKG}.
+# Require zmq of at least version 4.3.5 and output ${zmq_CPPFLAGS/LIBS/PKG}.
 #------------------------------------------------------------------------------
-PKG_CHECK_MODULES([zmq], [libzmq >= 4.3.4],
-    [zmq_INCLUDEDIR="`$PKG_CONFIG --variable=includedir "libzmq >= 4.3.4" 2>/dev/null`"
-     zmq_OTHER_CFLAGS="`$PKG_CONFIG --cflags-only-other "libzmq >= 4.3.4" 2>/dev/null`"],
-    [AC_MSG_ERROR([libzmq >= 4.3.4 is required but was not found.])])
-AC_SUBST([zmq_PKG], ['libzmq >= 4.3.4'])
+PKG_CHECK_MODULES([zmq], [libzmq >= 4.3.5],
+    [zmq_INCLUDEDIR="`$PKG_CONFIG --variable=includedir "libzmq >= 4.3.5" 2>/dev/null`"
+     zmq_OTHER_CFLAGS="`$PKG_CONFIG --cflags-only-other "libzmq >= 4.3.5" 2>/dev/null`"],
+    [AC_MSG_ERROR([libzmq >= 4.3.5 is required but was not found.])])
+AC_SUBST([zmq_PKG], ['libzmq >= 4.3.5'])
 AC_SUBST([zmq_CPPFLAGS], [${zmq_CFLAGS}])
 AS_IF([test x${zmq_INCLUDEDIR} != "x"],
     [AC_SUBST([zmq_ISYS_CPPFLAGS], ["-isystem${zmq_INCLUDEDIR} ${zmq_OTHER_CFLAGS}"])],
diff --git a/install-cmake.sh b/install-cmake.sh
index 951f222..ee7a445 100755
--- a/install-cmake.sh
+++ b/install-cmake.sh
@@ -64,8 +64,8 @@ ICU_ARCHIVE="icu4c-55_2-src.tgz"
 
 # ZMQ archive.
 #------------------------------------------------------------------------------
-ZMQ_URL="https://github.com/zeromq/libzmq/releases/download/v4.3.4/zeromq-4.3.4.tar.gz"
-ZMQ_ARCHIVE="zeromq-4.3.4.tar.gz"
+ZMQ_URL="https://github.com/zeromq/libzmq/releases/download/v4.3.5/zeromq-4.3.5.tar.gz"
+ZMQ_ARCHIVE="zeromq-4.3.5.tar.gz"
 
 # Boost archive.
 #------------------------------------------------------------------------------
@@ -450,15 +450,9 @@ set_pkgconfigdir()
 set_with_boost_prefix()
 {
     if [[ $BUILD_BOOST ]]; then
-        # Boost has no pkg-config, m4 searches in the following order:
-        # --with-boost=<path>, /usr, /usr/local, /opt, /opt/local, $BOOST_ROOT.
-        # We use --with-boost to prioritize the --prefix path when we build it.
-        # Otherwise standard paths suffice for Linux, Homebrew and MacPorts.
-        # ax_boost_base.m4 appends /include and adds to BOOST_CPPFLAGS
-        # ax_boost_base.m4 searches for /lib /lib64 and adds to BOOST_LDFLAGS
-        #
-        # cmake does not process this argument, so it has been zeroed out.
-        with_boost=""
+        # Boost detection via FindBoost.cmake provides for path hint via
+	# $BOOT_ROOT environment variable only.
+        export BOOST_ROOT="$PREFIX"
     fi
 }
 
@@ -479,6 +473,7 @@ display_configuration()
     display_message "BUILD_ICU             : $BUILD_ICU"
     display_message "BUILD_ZMQ             : $BUILD_ZMQ"
     display_message "BUILD_BOOST           : $BUILD_BOOST"
+    display_message "BOOST_ROOT            : $BOOST_ROOT"
     display_message "BUILD_DIR                      : $BUILD_DIR"
     display_message "CUMULATIVE_FILTERED_ARGS       : $CUMULATIVE_FILTERED_ARGS"
     display_message "CUMULATIVE_FILTERED_ARGS_CMAKE : $CUMULATIVE_FILTERED_ARGS_CMAKE"
@@ -723,7 +718,7 @@ cmake_project_directory()
     local PROJ_CONFIG_DIR
     PROJ_CONFIG_DIR=$(pwd)
 
-    cmake $@ builds/cmake
+    cmake -LA $@ builds/cmake
     make_jobs "$JOBS"
 
     if [[ $TEST == true ]]; then
diff --git a/install-cmakepresets.sh b/install-cmakepresets.sh
index 4012079..5c2fdb1 100755
--- a/install-cmakepresets.sh
+++ b/install-cmakepresets.sh
@@ -70,8 +70,8 @@ ICU_ARCHIVE="icu4c-55_2-src.tgz"
 
 # ZMQ archive.
 #------------------------------------------------------------------------------
-ZMQ_URL="https://github.com/zeromq/libzmq/releases/download/v4.3.4/zeromq-4.3.4.tar.gz"
-ZMQ_ARCHIVE="zeromq-4.3.4.tar.gz"
+ZMQ_URL="https://github.com/zeromq/libzmq/releases/download/v4.3.5/zeromq-4.3.5.tar.gz"
+ZMQ_ARCHIVE="zeromq-4.3.5.tar.gz"
 
 # Boost archive.
 #------------------------------------------------------------------------------
@@ -495,15 +495,9 @@ set_pkgconfigdir()
 set_with_boost_prefix()
 {
     if [[ $BUILD_BOOST ]]; then
-        # Boost has no pkg-config, m4 searches in the following order:
-        # --with-boost=<path>, /usr, /usr/local, /opt, /opt/local, $BOOST_ROOT.
-        # We use --with-boost to prioritize the --prefix path when we build it.
-        # Otherwise standard paths suffice for Linux, Homebrew and MacPorts.
-        # ax_boost_base.m4 appends /include and adds to BOOST_CPPFLAGS
-        # ax_boost_base.m4 searches for /lib /lib64 and adds to BOOST_LDFLAGS
-        #
-        # cmake does not process this argument, so it has been zeroed out.
-        with_boost=""
+        # Boost detection via FindBoost.cmake provides for path hint via
+	# $BOOT_ROOT environment variable only.
+        export BOOST_ROOT="$PREFIX"
     fi
 }
 
@@ -524,6 +518,7 @@ display_configuration()
     display_message "BUILD_ICU             : $BUILD_ICU"
     display_message "BUILD_ZMQ             : $BUILD_ZMQ"
     display_message "BUILD_BOOST           : $BUILD_BOOST"
+    display_message "BOOST_ROOT            : $BOOST_ROOT"
     display_message "BUILD_DIR                      : $BUILD_DIR"
     display_message "PRESET_ID                      : $PRESET_ID"
     display_message "CUMULATIVE_FILTERED_ARGS       : $CUMULATIVE_FILTERED_ARGS"
@@ -772,7 +767,7 @@ cmake_project_directory()
 
     push_directory "builds/cmake"
     display_message "Preparing cmake --preset=$PRESET $@"
-    cmake --preset=$PRESET $@
+    cmake -LA --preset=$PRESET $@
     popd
 
     push_directory "obj/$PRESET"
diff --git a/install.sh b/install.sh
index b5979ad..743c07d 100755
--- a/install.sh
+++ b/install.sh
@@ -64,8 +64,8 @@ ICU_ARCHIVE="icu4c-55_2-src.tgz"
 
 # ZMQ archive.
 #------------------------------------------------------------------------------
-ZMQ_URL="https://github.com/zeromq/libzmq/releases/download/v4.3.4/zeromq-4.3.4.tar.gz"
-ZMQ_ARCHIVE="zeromq-4.3.4.tar.gz"
+ZMQ_URL="https://github.com/zeromq/libzmq/releases/download/v4.3.5/zeromq-4.3.5.tar.gz"
+ZMQ_ARCHIVE="zeromq-4.3.5.tar.gz"
 
 # Boost archive.
 #------------------------------------------------------------------------------
@@ -397,6 +397,7 @@ set_with_boost_prefix()
         # ax_boost_base.m4 appends /include and adds to BOOST_CPPFLAGS
         # ax_boost_base.m4 searches for /lib /lib64 and adds to BOOST_LDFLAGS
         with_boost="--with-boost=$PREFIX"
+        export BOOST_ROOT="$PREFIX"
     fi
 }
 
@@ -417,6 +418,7 @@ display_configuration()
     display_message "BUILD_ICU             : $BUILD_ICU"
     display_message "BUILD_ZMQ             : $BUILD_ZMQ"
     display_message "BUILD_BOOST           : $BUILD_BOOST"
+    display_message "BOOST_ROOT            : $BOOST_ROOT"
     display_message "BUILD_DIR             : $BUILD_DIR"
     display_message "PREFIX                : $PREFIX"
     display_message "DISABLE_SHARED        : $DISABLE_SHARED"
diff --git a/libbitcoin-protocol.pc.in b/libbitcoin-protocol.pc.in
index a205dac..652a8e2 100644
--- a/libbitcoin-protocol.pc.in
+++ b/libbitcoin-protocol.pc.in
@@ -25,7 +25,7 @@ Version: @PACKAGE_VERSION@
 #==============================================================================
 # Dependencies that publish package configuration.
 #------------------------------------------------------------------------------
-Requires: libzmq >= 4.3.4 libbitcoin-system >= 4.0.0
+Requires: libzmq >= 4.3.5 libbitcoin-system >= 4.0.0
 
 # Include directory and any other required compiler flags.
 #------------------------------------------------------------------------------