cmake: use pkgconfig to find zeromq

.github/workflows/build.yml

@@ -15,7 +15,7 @@ env:
   REMOVE_BUNDLED_PACKAGES : sudo rm -rf /usr/local
   BUILD_DEFAULT_LINUX: |
         cmake -S . -B build -D ARCH="default" -D BUILD_TESTS=ON -D CMAKE_BUILD_TYPE=Release && cmake --build build -j3
-  APT_INSTALL_LINUX: 'sudo apt -y install build-essential cmake libboost-all-dev miniupnpc libunbound-dev graphviz doxygen libunwind8-dev pkg-config libssl-dev libzmq3-dev libsodium-dev libhidapi-dev libnorm-dev libusb-1.0-0-dev libpgm-dev libprotobuf-dev protobuf-compiler ccache'
+  APT_INSTALL_LINUX: 'sudo apt -y install build-essential cmake libboost-all-dev miniupnpc libunbound-dev graphviz doxygen libunwind8-dev pkg-config libssl-dev libzmq3-dev libsodium-dev libhidapi-dev libusb-1.0-0-dev libprotobuf-dev protobuf-compiler ccache'
   APT_SET_CONF: |
         echo "Acquire::Retries \"3\";"         | sudo tee -a /etc/apt/apt.conf.d/80-custom
         echo "Acquire::http::Timeout \"120\";" | sudo tee -a /etc/apt/apt.conf.d/80-custom
@@ -41,7 +41,7 @@ jobs:
         restore-keys: ccache-${{ runner.os }}-build-
     - name: install dependencies
       run: |
-        HOMEBREW_NO_AUTO_UPDATE=1 brew install boost hidapi openssl zmq libpgm miniupnpc expat libunwind-headers protobuf@21 ccache
+        HOMEBREW_NO_AUTO_UPDATE=1 brew install boost hidapi openssl zmq miniupnpc expat libunwind-headers protobuf@21 ccache
         brew link protobuf@21
     - name: build
       run: |

CMakeLists.txt

@@ -1200,46 +1200,8 @@ if(STATIC)
 endif()
 find_package(Sodium REQUIRED)
 
-find_path(ZMQ_INCLUDE_PATH zmq.h)
-find_library(ZMQ_LIB zmq)
-find_library(PGM_LIBRARY pgm)
-find_library(NORM_LIBRARY norm)
-find_library(GSSAPI_LIBRARY gssapi_krb5)
-find_library(PROTOLIB_LIBRARY protolib)
-find_library(BSD_LIBRARY bsd)
-find_library(MD_LIBRARY md)
-find_library(PROTOKIT_LIBRARY protokit)
-
-if(NOT ZMQ_INCLUDE_PATH)
-  message(FATAL_ERROR "Could not find required header zmq.h")
-endif()
-if(NOT ZMQ_LIB)
-  message(FATAL_ERROR "Could not find required libzmq")
-endif()
-if(PGM_LIBRARY)
-  set(ZMQ_LIB "${ZMQ_LIB};${PGM_LIBRARY}")
-endif()
-if(NORM_LIBRARY)
-  set(ZMQ_LIB "${ZMQ_LIB};${NORM_LIBRARY}")
-endif()
-if(GSSAPI_LIBRARY)
-  set(ZMQ_LIB "${ZMQ_LIB};${GSSAPI_LIBRARY}")
-endif()
-if(PROTOLIB_LIBRARY)
-  set(ZMQ_LIB "${ZMQ_LIB};${PROTOLIB_LIBRARY}")
-endif()
-if(Sodium_FOUND)
-  set(ZMQ_LIB "${ZMQ_LIB};${sodium_LIBRARIES}")
-endif()
-if(BSD_LIBRARY)
-  set(ZMQ_LIB "${ZMQ_LIB};${BSD_LIBRARY}")
-endif()
-if(MD_LIBRARY)
-  set(ZMQ_LIB "${ZMQ_LIB};${MD_LIBRARY}")
-endif()
-if(PROTOKIT_LIBRARY)
-  set(ZMQ_LIB "${ZMQ_LIB};${PROTOKIT_LIBRARY}")
-endif()
+find_package(PkgConfig REQUIRED)
+pkg_check_modules(libzmq REQUIRED IMPORTED_TARGET libzmq)
 
 include(external/supercop/functions.cmake) # place after setting flags and before src directory inclusion
 add_subdirectory(contrib)

README.md

@@ -170,8 +170,6 @@ library archives (`.a`).
 | Boost        | 1.62          | NO       | `libboost-all-dev`   | `boost`      | `boost-devel`      | `boost-devel`       | NO       | C++ libraries   |
 | OpenSSL      | basically any | NO       | `libssl-dev`         | `openssl`    | `openssl-devel`    | `openssl-devel`     | NO       | sha256 sum      |
 | libzmq       | 4.2.0         | NO       | `libzmq3-dev`        | `zeromq`     | `zeromq-devel`     | `zeromq-devel`      | NO       | ZeroMQ library  |
-| OpenPGM      | ?             | NO       | `libpgm-dev`         | `libpgm`     |                    | `openpgm-devel`     | NO       | For ZeroMQ      |
-| libnorm[2]   | ?             | NO       | `libnorm-dev`        |              |                    |                     | YES      | For ZeroMQ      |
 | libunbound   | 1.4.16        | NO       | `libunbound-dev`     | `unbound`    | `unbound-devel`    | `unbound-devel`     | NO       | DNS resolver    |
 | libsodium    | ?             | NO       | `libsodium-dev`      | `libsodium`  | `libsodium-devel`  | `libsodium-devel`   | NO       | cryptography    |
 | libunwind    | any           | NO       | `libunwind8-dev`     | `libunwind`  | `libunwind-devel`  | `libunwind-devel`   | YES      | Stack traces    |
@@ -198,22 +196,20 @@ then:
 * on Ubuntu:
   `sudo mv lib/libg* /usr/lib/`
 
-[2] libnorm-dev is needed if your zmq library was built with libnorm, and not needed otherwise
-
 Install all dependencies at once on Debian/Ubuntu:
 
 ```
-sudo apt update && sudo apt install build-essential cmake pkg-config libssl-dev libzmq3-dev libunbound-dev libsodium-dev libunwind8-dev liblzma-dev libreadline6-dev libexpat1-dev libpgm-dev qttools5-dev-tools libhidapi-dev libusb-1.0-0-dev libprotobuf-dev protobuf-compiler libudev-dev libboost-chrono-dev libboost-date-time-dev libboost-filesystem-dev libboost-locale-dev libboost-program-options-dev libboost-regex-dev libboost-serialization-dev libboost-system-dev libboost-thread-dev python3 ccache doxygen graphviz
+sudo apt update && sudo apt install build-essential cmake pkg-config libssl-dev libzmq3-dev libunbound-dev libsodium-dev libunwind8-dev liblzma-dev libreadline6-dev libexpat1-dev qttools5-dev-tools libhidapi-dev libusb-1.0-0-dev libprotobuf-dev protobuf-compiler libudev-dev libboost-chrono-dev libboost-date-time-dev libboost-filesystem-dev libboost-locale-dev libboost-program-options-dev libboost-regex-dev libboost-serialization-dev libboost-system-dev libboost-thread-dev python3 ccache doxygen graphviz
 ```
 
 Install all dependencies at once on Arch:
 ```
-sudo pacman -Syu --needed base-devel cmake boost openssl zeromq libpgm unbound libsodium libunwind xz readline expat gtest python3 ccache doxygen graphviz qt5-tools hidapi libusb protobuf systemd
+sudo pacman -Syu --needed base-devel cmake boost openssl zeromq unbound libsodium libunwind xz readline expat gtest python3 ccache doxygen graphviz qt5-tools hidapi libusb protobuf systemd
 ```
 
 Install all dependencies at once on Fedora:
 ```
-sudo dnf install gcc gcc-c++ cmake pkgconf boost-devel openssl-devel zeromq-devel openpgm-devel unbound-devel libsodium-devel libunwind-devel xz-devel readline-devel expat-devel gtest-devel ccache doxygen graphviz qt5-linguist hidapi-devel libusbx-devel protobuf-devel protobuf-compiler systemd-devel
+sudo dnf install gcc gcc-c++ cmake pkgconf boost-devel openssl-devel zeromq-devel unbound-devel libsodium-devel libunwind-devel xz-devel readline-devel expat-devel gtest-devel ccache doxygen graphviz qt5-linguist hidapi-devel libusbx-devel protobuf-devel protobuf-compiler systemd-devel
 ```
 
 Install all dependencies at once on openSUSE:

contrib/depends/toolchain.cmake.in

@@ -42,9 +42,6 @@ SET(LIBUNWIND_LIBRARIES @prefix@/lib/libunwind.a)
 SET(LIBUNWIND_LIBRARY_DIRS @prefix@/lib)
 endif()
 
-SET(ZMQ_INCLUDE_PATH @prefix@/include)
-SET(ZMQ_LIB @prefix@/lib/libzmq.a)
-
 SET(Boost_IGNORE_SYSTEM_PATH ON)
 SET(BOOST_ROOT @prefix@)
 SET(BOOST_INCLUDEDIR @prefix@/include)

src/daemon/CMakeLists.txt

@@ -65,7 +65,7 @@ target_link_libraries(daemon
     ${Boost_REGEX_LIBRARY}
     ${Boost_SYSTEM_LIBRARY}
     ${CMAKE_THREAD_LIBS_INIT}
-    ${ZMQ_LIB}
+    PkgConfig::libzmq
     ${GNU_READLINE_LIBRARY}
     ${EXTRA_LIBRARIES}
     ${Blocks})

src/net/CMakeLists.txt

@@ -32,5 +32,5 @@ set(net_sources dandelionpp.cpp error.cpp http.cpp i2p_address.cpp parse.cpp res
 monero_find_all_headers(net_headers "${CMAKE_CURRENT_SOURCE_DIR}")
 
 monero_add_library(net ${net_sources} ${net_headers})
-target_link_libraries(net common epee ${ZMQ_LIB} ${Boost_ASIO_LIBRARY})
+target_link_libraries(net common epee PkgConfig::libzmq ${Boost_ASIO_LIBRARY})
 

src/rpc/CMakeLists.txt

@@ -26,8 +26,6 @@
 # STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
 # THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
-include_directories(SYSTEM ${ZMQ_INCLUDE_PATH})
-
 set(rpc_base_sources
   rpc_args.cpp
   rpc_payment_signature.cpp
@@ -171,7 +169,5 @@ target_link_libraries(daemon_rpc_server
     ${Boost_REGEX_LIBRARY}
     ${Boost_SYSTEM_LIBRARY}
     ${Boost_THREAD_LIBRARY}
-    ${ZMQ_LIB}
+    PkgConfig::libzmq
     ${EXTRA_LIBRARIES})
-target_include_directories(daemon_rpc_server PUBLIC ${ZMQ_INCLUDE_PATH})
-target_include_directories(obj_daemon_rpc_server PUBLIC ${ZMQ_INCLUDE_PATH})

tests/trezor/CMakeLists.txt

@@ -62,7 +62,7 @@ target_link_libraries(trezor_tests
     ${Boost_FILESYSTEM_LIBRARY}
     ${Boost_PROGRAM_OPTIONS_LIBRARY}
     ${Boost_SYSTEM_LIBRARY}
-    ${ZMQ_LIB}
+    PkgConfig::libzmq
     ${CMAKE_THREAD_LIBS_INIT}
     ${EXTRA_LIBRARIES})
 

tests/unit_tests/CMakeLists.txt

@@ -131,7 +131,7 @@ target_link_libraries(unit_tests
     ${GTEST_LIBRARIES}
     ${CMAKE_THREAD_LIBS_INIT}
     ${EXTRA_LIBRARIES}
-    ${ZMQ_LIB})
+    PkgConfig::libzmq)
 set_property(TARGET unit_tests
   PROPERTY
     FOLDER "tests")