build, ci: Remove IPC configuration and install capnp on runners

.github/workflows/ci.yml

@@ -485,11 +485,11 @@ jobs:
             timeout-minutes: 120
             file-env: './ci/test/00_setup_env_freebsd_cross.sh'
 
-          - name: 'i686, no IPC'
+          - name: 'i686'
             cirrus-runner: 'ghcr.io/cirruslabs/ubuntu-runner-amd64:24.04-md'
             fallback-runner: 'ubuntu-24.04'
             timeout-minutes: 120
-            file-env: './ci/test/00_setup_env_i686_no_ipc.sh'
+            file-env: './ci/test/00_setup_env_i686.sh'
 
           - name: 'fuzzer,address,undefined,integer'
             cirrus-runner: 'ghcr.io/cirruslabs/ubuntu-runner-amd64:24.04-lg'

CMakeLists.txt

@@ -599,12 +599,6 @@ message("  libbitcoinkernel (experimental) ..... ${BUILD_KERNEL_LIB}")
 message("  kernel-test (experimental) .......... ${BUILD_KERNEL_TEST}")
 message("Optional features:")
 message("  ZeroMQ .............................. ${WITH_ZMQ}")
-if(WITH_EXTERNAL_LIBMULTIPROCESS)
-  set(ipc_status "ON (with external libmultiprocess)")
-else()
-  set(ipc_status ON)
-endif()
-message("  IPC ................................. ${ipc_status}")
 message("  Embedded ASMap ...................... ${WITH_EMBEDDED_ASMAP}")
 message("  USDT tracing ........................ ${WITH_USDT}")
 message("Tests:")

ci/test/00_setup_env_i686_no_ipc.sh → ci/test/00_setup_env_i686.sh

@@ -7,17 +7,16 @@
 export LC_ALL=C.UTF-8
 
 export HOST=i686-pc-linux-gnu
-export CONTAINER_NAME=ci_i686_no_multiprocess
+export CONTAINER_NAME=ci_i686
 export CI_IMAGE_NAME_TAG="mirror.gcr.io/debian:trixie"
 export CI_IMAGE_PLATFORM="linux/amd64"
 export CI_CONTAINER_CAP="--security-opt seccomp=unconfined"
 export PACKAGES="llvm clang g++-multilib"
-export DEP_OPTS="DEBUG=1 NO_IPC=1"
+export DEP_OPTS="DEBUG=1"
 export GOAL="install"
 export CI_LIMIT_STACK_SIZE=1
 export BITCOIN_CONFIG="\
  --preset=dev-mode \
- -DENABLE_IPC=OFF \
  -DCMAKE_BUILD_TYPE=Debug \
  -DCMAKE_C_COMPILER='clang;-m32' \
  -DCMAKE_CXX_COMPILER='clang++;-m32' \

ci/test/00_setup_env_mac_cross.sh

@@ -16,7 +16,7 @@ export XCODE_VERSION=26.1.1
 export XCODE_BUILD_ID=17B100
 export RUN_UNIT_TESTS=false
 export RUN_FUNCTIONAL_TESTS=false
-export GOAL="deploy"
+export GOAL="install"
 export BITCOIN_CONFIG="\
  --preset=dev-mode \
  -DWITH_USDT=OFF \

ci/test/00_setup_env_mac_cross_intel.sh

@@ -16,7 +16,7 @@ export XCODE_VERSION=26.1.1
 export XCODE_BUILD_ID=17B100
 export RUN_UNIT_TESTS=false
 export RUN_FUNCTIONAL_TESTS=false
-export GOAL="deploy"
+export GOAL="install"
 export BITCOIN_CONFIG="\
  --preset=dev-mode \
  -DWITH_USDT=OFF \

ci/test/00_setup_env_mac_native.sh

@@ -8,7 +8,7 @@ export LC_ALL=C.UTF-8
 
 export CONTAINER_NAME="ci_mac_native"  # macos does not use a container, but the env var is needed for logging
 export PIP_PACKAGES="--break-system-packages pycapnp zmq"
-export GOAL="install deploy"
+export GOAL="install"
 export CMAKE_GENERATOR="Ninja"
 export CI_OS_NAME="macos"
 export NO_DEPENDS=1

ci/test/00_setup_env_win64.sh

@@ -15,7 +15,6 @@ export RUN_FUNCTIONAL_TESTS=false
 export GOAL="deploy"
 export BITCOIN_CONFIG="\
   --preset=dev-mode \
-  -DENABLE_IPC=OFF \
   -DWITH_USDT=OFF \
   -DREDUCE_EXPORTS=ON \
   -DCMAKE_CXX_FLAGS='-Wno-error=maybe-uninitialized' \

ci/test/00_setup_env_win64_msvcrt.sh

@@ -15,7 +15,6 @@ export RUN_FUNCTIONAL_TESTS=false
 export GOAL="deploy"
 export BITCOIN_CONFIG="\
   --preset=dev-mode \
-  -DENABLE_IPC=OFF \
   -DWITH_USDT=OFF \
   -DREDUCE_EXPORTS=ON \
   -DCMAKE_CXX_FLAGS='-Wno-error=maybe-uninitialized' \

cmake/module/GenerateSetupNsi.cmake

@@ -11,7 +11,6 @@ function(generate_setup_nsi)
   set(BITCOIN_DAEMON_NAME "bitcoind")
   set(BITCOIN_CLI_NAME "bitcoin-cli")
   set(BITCOIN_TX_NAME "bitcoin-tx")
-  set(BITCOIN_WALLET_TOOL_NAME "bitcoin-wallet")
   set(BITCOIN_TEST_NAME "test_bitcoin")
   set(EXEEXT ${CMAKE_EXECUTABLE_SUFFIX})
   configure_file(${PROJECT_SOURCE_DIR}/share/setup.nsi.in ${PROJECT_BINARY_DIR}/bitcoin-win64-setup.nsi USE_SOURCE_PERMISSIONS @ONLY)

cmake/module/Maintenance.cmake

@@ -19,7 +19,7 @@ function(setup_split_debug_script)
 endfunction()
 
 function(add_windows_deploy_target)
-  if(MINGW AND TARGET bitcoin AND TARGET bitcoind AND TARGET bitcoin-cli AND TARGET bitcoin-tx AND TARGET bitcoin-wallet AND TARGET bitcoin-util AND TARGET test_bitcoin)
+  if(MINGW AND TARGET bitcoin AND TARGET bitcoind AND TARGET bitcoin-cli AND TARGET bitcoin-tx AND TARGET bitcoin-util AND TARGET test_bitcoin)
     find_program(MAKENSIS_EXECUTABLE makensis)
     if(NOT MAKENSIS_EXECUTABLE)
       add_custom_target(deploy
@@ -39,7 +39,6 @@ function(add_windows_deploy_target)
       COMMAND ${CMAKE_STRIP} $<TARGET_FILE:bitcoind> -o ${PROJECT_BINARY_DIR}/release/$<TARGET_FILE_NAME:bitcoind>
       COMMAND ${CMAKE_STRIP} $<TARGET_FILE:bitcoin-cli> -o ${PROJECT_BINARY_DIR}/release/$<TARGET_FILE_NAME:bitcoin-cli>
       COMMAND ${CMAKE_STRIP} $<TARGET_FILE:bitcoin-tx> -o ${PROJECT_BINARY_DIR}/release/$<TARGET_FILE_NAME:bitcoin-tx>
-      COMMAND ${CMAKE_STRIP} $<TARGET_FILE:bitcoin-wallet> -o ${PROJECT_BINARY_DIR}/release/$<TARGET_FILE_NAME:bitcoin-wallet>
       COMMAND ${CMAKE_STRIP} $<TARGET_FILE:bitcoin-util> -o ${PROJECT_BINARY_DIR}/release/$<TARGET_FILE_NAME:bitcoin-util>
       COMMAND ${CMAKE_STRIP} $<TARGET_FILE:test_bitcoin> -o ${PROJECT_BINARY_DIR}/release/$<TARGET_FILE_NAME:test_bitcoin>
       COMMAND ${MAKENSIS_EXECUTABLE} -V2 ${PROJECT_BINARY_DIR}/bitcoin-win64-setup.nsi

doc/release-notes/release-notes-30.0.md

@@ -128,9 +128,7 @@ IPC Mining Interface
   (`bitcoin-node` instead of `bitcoind`) and is currently required but will become optional
   in the future (with [#33229](https://github.com/bitcoin/bitcoin/pull/33229)).
 
-- IPC connectivity introduces new dependencies (see [multiprocess.md](https://github.com/bitcoin/bitcoin/blob/master/doc/multiprocess.md)),
-  which can be turned off with the `-DENABLE_IPC=OFF` build option if you do not intend
-  to use IPC. (#31802)
+- IPC connectivity introduces new dependencies (see [multiprocess.md](https://github.com/bitcoin/bitcoin/blob/master/doc/multiprocess.md)). (#31802)
 
 Install changes
 ---------------

share/setup.nsi.in

@@ -82,7 +82,6 @@ Section -Main SEC0000
     File @abs_top_builddir@/release/@BITCOIN_DAEMON_NAME@@EXEEXT@
     File @abs_top_builddir@/release/@BITCOIN_CLI_NAME@@EXEEXT@
     File @abs_top_builddir@/release/@BITCOIN_TX_NAME@@EXEEXT@
-    File @abs_top_builddir@/release/@BITCOIN_WALLET_TOOL_NAME@@EXEEXT@
     File @abs_top_builddir@/release/@BITCOIN_TEST_NAME@@EXEEXT@
     SetOutPath $INSTDIR
     WriteRegStr HKCU "${REGKEY}\Components" Main 1

test/CMakeLists.txt

@@ -25,7 +25,6 @@ function(create_test_config)
   set_configure_variable(WITH_ZMQ ENABLE_ZMQ)
   set_configure_variable(WITH_EMBEDDED_ASMAP ENABLE_EMBEDDED_ASMAP)
   set_configure_variable(WITH_USDT ENABLE_USDT_TRACEPOINTS)
-  set(ENABLE_IPC_TRUE "")
 
   configure_file(config.ini.in config.ini USE_SOURCE_PERMISSIONS @ONLY)
 endfunction()

test/config.ini.in

@@ -25,4 +25,4 @@ RPCAUTH=@abs_top_srcdir@/share/rpcauth/rpcauth.py
 @ENABLE_ZMQ_TRUE@ENABLE_ZMQ=true
 @ENABLE_EMBEDDED_ASMAP_TRUE@ENABLE_EMBEDDED_ASMAP=true
 @ENABLE_USDT_TRACEPOINTS_TRUE@ENABLE_USDT_TRACEPOINTS=true
-@ENABLE_IPC_TRUE@ENABLE_IPC=true
+ENABLE_IPC=true

vcpkg.json

@@ -4,6 +4,7 @@
   "builtin-baseline": "120deac3062162151622ca4860575a33844ba10b",
   "dependencies": [
     "boost-multi-index",
+    "capnproto",
     "libevent"
   ],
   "default-features": [