cmake: enable ENABLE_IPC option by default

Install capnp on non-depends CI jobs.

Use the bitcoin-node binary in the macOS native non-depends job.

Co-authored-by: Ryan Ofsky <ryan@ofsky.org>

.github/workflows/ci.yml

@@ -77,7 +77,7 @@ jobs:
           git config user.name "CI"
       - run: |
           sudo apt-get update
-          sudo apt-get install clang ccache build-essential cmake ninja-build pkgconf python3-zmq libevent-dev libboost-dev libsqlite3-dev libdb++-dev systemtap-sdt-dev libzmq3-dev qt6-base-dev qt6-tools-dev qt6-l10n-tools libqrencode-dev -y
+          sudo apt-get install clang ccache build-essential cmake ninja-build pkgconf python3-zmq libevent-dev libboost-dev libsqlite3-dev libdb++-dev systemtap-sdt-dev libzmq3-dev qt6-base-dev qt6-tools-dev qt6-l10n-tools libqrencode-dev libcapnp-dev capnproto -y
       - name: Compile and run tests
         run: |
           # Run tests on commits after the last merge commit and before the PR head commit
@@ -133,7 +133,7 @@ jobs:
         run: |
           # A workaround for "The `brew link` step did not complete successfully" error.
           brew install --quiet python@3 || brew link --overwrite python@3
-          brew install --quiet coreutils ninja pkgconf gnu-getopt ccache boost libevent zeromq qt@6 qrencode
+          brew install --quiet coreutils ninja pkgconf gnu-getopt ccache boost libevent zeromq qt@6 qrencode capnp
 
       - name: Set Ccache directory
         run: echo "CCACHE_DIR=${RUNNER_TEMP}/ccache_dir" >> "$GITHUB_ENV"

CMakeLists.txt

@@ -153,7 +153,7 @@ endif()
 
 cmake_dependent_option(WITH_DBUS "Enable DBus support." ON "CMAKE_SYSTEM_NAME STREQUAL \"Linux\" AND BUILD_GUI" OFF)
 
-option(ENABLE_IPC "Build multiprocess bitcoin-node and bitcoin-gui executables in addition to monolithic bitcoind and bitcoin-qt executables. Requires libmultiprocess library. Experimental." OFF)
+cmake_dependent_option(ENABLE_IPC "Build multiprocess bitcoin-node and bitcoin-gui executables in addition to monolithic bitcoind and bitcoin-qt executables." ON "NOT WIN32" OFF)
 cmake_dependent_option(WITH_EXTERNAL_LIBMULTIPROCESS "Build with external libmultiprocess library instead of with local git subtree when ENABLE_IPC is enabled. This is not normally recommended, but can be useful for developing libmultiprocess itself." OFF "ENABLE_IPC" OFF)
 if(ENABLE_IPC AND WITH_EXTERNAL_LIBMULTIPROCESS)
   find_package(Libmultiprocess REQUIRED COMPONENTS Lib)

ci/test/00_setup_env_mac_native.sh

@@ -11,7 +11,12 @@ export LC_ALL=C.UTF-8
 export PIP_PACKAGES="--break-system-packages zmq"
 export GOAL="install"
 export CMAKE_GENERATOR="Ninja"
-export BITCOIN_CONFIG="-DBUILD_GUI=ON -DWITH_ZMQ=ON -DREDUCE_EXPORTS=ON"
+export BITCOIN_CONFIG="\
+ -DBUILD_GUI=ON \
+ -DWITH_ZMQ=ON \
+ -DREDUCE_EXPORTS=ON \
+"
 export CI_OS_NAME="macos"
 export NO_DEPENDS=1
 export OSX_SDK=""
+export BITCOIND=bitcoin-node # Used in functional tests

ci/test/00_setup_env_native_asan.sh

@@ -20,11 +20,15 @@ fi
 
 export CONTAINER_NAME=ci_native_asan
 export APT_LLVM_V="20"
-export PACKAGES="systemtap-sdt-dev clang-${APT_LLVM_V} llvm-${APT_LLVM_V} libclang-rt-${APT_LLVM_V}-dev python3-zmq qt6-base-dev qt6-tools-dev qt6-l10n-tools libevent-dev libboost-dev libdb5.3++-dev libzmq3-dev libqrencode-dev libsqlite3-dev ${BPFCC_PACKAGE}"
+export PACKAGES="systemtap-sdt-dev clang-${APT_LLVM_V} llvm-${APT_LLVM_V} libclang-rt-${APT_LLVM_V}-dev python3-zmq qt6-base-dev qt6-tools-dev qt6-l10n-tools libevent-dev libboost-dev libdb5.3++-dev libzmq3-dev libqrencode-dev libsqlite3-dev ${BPFCC_PACKAGE} libcapnp-dev capnproto"
 export NO_DEPENDS=1
 export GOAL="install"
 export BITCOIN_CONFIG="\
- -DWITH_USDT=ON -DWITH_ZMQ=ON -DWITH_BDB=ON -DWARN_INCOMPATIBLE_BDB=OFF -DBUILD_GUI=ON \
+ -DWITH_USDT=ON \
+ -DWITH_ZMQ=ON \
+ -DWITH_BDB=ON \
+ -DWARN_INCOMPATIBLE_BDB=OFF \
+ -DBUILD_GUI=ON \
  -DSANITIZERS=address,float-divide-by-zero,integer,undefined \
  -DCMAKE_C_COMPILER=clang-${APT_LLVM_V} \
  -DCMAKE_CXX_COMPILER=clang++-${APT_LLVM_V} \

ci/test/00_setup_env_native_fuzz.sh

@@ -9,7 +9,7 @@ export LC_ALL=C.UTF-8
 export CI_IMAGE_NAME_TAG="mirror.gcr.io/ubuntu:24.04"
 export CONTAINER_NAME=ci_native_fuzz
 export APT_LLVM_V="20"
-export PACKAGES="clang-${APT_LLVM_V} llvm-${APT_LLVM_V} libclang-rt-${APT_LLVM_V}-dev libevent-dev libboost-dev libsqlite3-dev"
+export PACKAGES="clang-${APT_LLVM_V} llvm-${APT_LLVM_V} libclang-rt-${APT_LLVM_V}-dev libevent-dev libboost-dev libsqlite3-dev libcapnp-dev capnproto"
 export NO_DEPENDS=1
 export RUN_UNIT_TESTS=false
 export RUN_FUNCTIONAL_TESTS=false

ci/test/00_setup_env_native_fuzz_with_valgrind.sh

@@ -8,7 +8,7 @@ export LC_ALL=C.UTF-8
 
 export CI_IMAGE_NAME_TAG="mirror.gcr.io/ubuntu:24.04"
 export CONTAINER_NAME=ci_native_fuzz_valgrind
-export PACKAGES="libevent-dev libboost-dev libsqlite3-dev valgrind"
+export PACKAGES="libevent-dev libboost-dev libsqlite3-dev valgrind libcapnp-dev capnproto"
 export NO_DEPENDS=1
 export RUN_UNIT_TESTS=false
 export RUN_FUNCTIONAL_TESTS=false

ci/test/00_setup_env_native_tidy.sh

@@ -10,7 +10,7 @@ export CI_IMAGE_NAME_TAG="mirror.gcr.io/ubuntu:24.04"
 export CONTAINER_NAME=ci_native_tidy
 export TIDY_LLVM_V="19"
 export APT_LLVM_V="${TIDY_LLVM_V}"
-export PACKAGES="clang-${TIDY_LLVM_V} libclang-${TIDY_LLVM_V}-dev llvm-${TIDY_LLVM_V}-dev libomp-${TIDY_LLVM_V}-dev clang-tidy-${TIDY_LLVM_V} jq libevent-dev libboost-dev libzmq3-dev systemtap-sdt-dev qt6-base-dev qt6-tools-dev qt6-l10n-tools libqrencode-dev libsqlite3-dev libdb++-dev"
+export PACKAGES="clang-${TIDY_LLVM_V} libclang-${TIDY_LLVM_V}-dev llvm-${TIDY_LLVM_V}-dev libomp-${TIDY_LLVM_V}-dev clang-tidy-${TIDY_LLVM_V} jq libevent-dev libboost-dev libzmq3-dev systemtap-sdt-dev qt6-base-dev qt6-tools-dev qt6-l10n-tools libqrencode-dev libsqlite3-dev libdb++-dev libcapnp-dev capnproto"
 export NO_DEPENDS=1
 export RUN_UNIT_TESTS=false
 export RUN_FUNCTIONAL_TESTS=false
@@ -19,7 +19,12 @@ export RUN_CHECK_DEPS=true
 export RUN_TIDY=true
 export GOAL="install"
 export BITCOIN_CONFIG="\
- -DWITH_ZMQ=ON -DBUILD_GUI=ON -DBUILD_BENCH=ON -DWITH_USDT=ON -DWITH_BDB=ON -DWARN_INCOMPATIBLE_BDB=OFF \
+ -DWITH_ZMQ=ON \
+ -DBUILD_GUI=ON \
+ -DBUILD_BENCH=ON \
+ -DWITH_USDT=ON \
+ -DWITH_BDB=ON \
+ -DWARN_INCOMPATIBLE_BDB=OFF \
  -DCMAKE_C_COMPILER=clang-${TIDY_LLVM_V} \
  -DCMAKE_CXX_COMPILER=clang++-${TIDY_LLVM_V} \
  -DCMAKE_C_FLAGS_RELWITHDEBINFO='-O0 -g0' \

ci/test/00_setup_env_native_valgrind.sh

@@ -8,12 +8,15 @@ export LC_ALL=C.UTF-8
 
 export CI_IMAGE_NAME_TAG="mirror.gcr.io/ubuntu:24.04"
 export CONTAINER_NAME=ci_native_valgrind
-export PACKAGES="valgrind python3-zmq libevent-dev libboost-dev libdb5.3++-dev libzmq3-dev libsqlite3-dev"
+export PACKAGES="valgrind python3-zmq libevent-dev libboost-dev libdb5.3++-dev libzmq3-dev libsqlite3-dev libcapnp-dev capnproto"
 export USE_VALGRIND=1
 export NO_DEPENDS=1
 export TEST_RUNNER_EXTRA="--exclude feature_init,rpc_bind,feature_bind_extra"  # feature_init excluded for now, see https://github.com/bitcoin/bitcoin/issues/30011 ; bind tests excluded for now, see https://github.com/bitcoin/bitcoin/issues/17765#issuecomment-602068547
 export GOAL="install"
 # TODO enable GUI
 export BITCOIN_CONFIG="\
- -DWITH_ZMQ=ON -DWITH_BDB=ON -DWARN_INCOMPATIBLE_BDB=OFF -DBUILD_GUI=OFF \
+ -DWITH_ZMQ=ON
+ -DWITH_BDB=ON
+ -DWARN_INCOMPATIBLE_BDB=OFF
+ -DBUILD_GUI=OFF \
 "

doc/multiprocess.md

@@ -4,7 +4,7 @@ _This document describes usage of the multiprocess feature. For design informati
 
 ## Build Option
 
-On Unix systems, the `-DENABLE_IPC=ON` build option can be passed to build the supplemental `bitcoin-node` and `bitcoin-gui` multiprocess executables.
+The `-DENABLE_IPC=ON` build option, supported and enabled by default on Unix systems, can be passed to build the supplemental `bitcoin-node` and `bitcoin-gui` multiprocess executables.
 
 ## Debugging