Could NOT find ZeroMQ (missing: ZeroMQ_FOUND)

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When doing a cmake on a plugin I get the error: Could NOT find ZeroMQ (missing: ZeroMQ_FOUND) I just installed gazebo 9. I had been using gazebo 7.

The detail: iMac:build arnoldbail$ cmake .. CMake Warning (dev) in CMakeLists.txt: No project() command is present. The top-level CMakeLists.txt file must contain a literal, direct call to the project() command. Add a line of code such as

project(ProjectName)

near the top of the file, but after cmake_minimum_required().

CMake is pretending there is a "project(Project)" command on the first line. This warning is for project developers. Use -Wno-dev to suppress it.

CMake Warning (dev) at /usr/local/Cellar/cmake/3.18.1/share/cmake/Modules/FindPackageHandleStandardArgs.cmake:273 (message): The package name passed to find_package_handle_standard_args (PkgConfig) does not match the name of the calling package (gazebo). This can lead to problems in calling code that expects find_package result variables (e.g., _FOUND) to follow a certain pattern. Call Stack (most recent call first): /usr/local/Cellar/cmake/3.18.1/share/cmake/Modules/FindPkgConfig.cmake:59 (find_package_handle_standard_args) /usr/local/lib/cmake/gazebo/gazebo-config.cmake:30 (include) CMakeLists.txt:4 (find_package) This warning is for project developers. Use -Wno-dev to suppress it.

-- Found DART: /usr/local/include (Required is at least version "6") found components: dart -- Found Boost: /usr/local/lib/cmake/Boost-1.73.0/BoostConfig.cmake (found suitable version "1.73.0", minimum required is "1.40.0") found components: thread system filesystem program_options regex iostreams date_time -- Found Protobuf: /usr/local/lib/libprotobuf.dylib (found version "3.12.4") -- Found Boost: /usr/local/lib/cmake/Boost-1.73.0/BoostConfig.cmake (found version "1.73.0")
-- Looking for OGRE... -- Found Ogre Ghadamon (1.9.0) -- Found OGRE: optimized;/usr/local/Cellar/ogre1.9/1.9-20160714-108ab0bcc69603dba32c0ffd4bbbc39051f421c9_8/lib/libOgreMain.dylib;debug;/usr/local/Cellar/ogre1.9/1.9-20160714-108ab0bcc69603dba32c0ffd4bbbc39051f421c9_8/lib/libOgreMain.dylib -- Looking for OGRE_Paging... -- Found OGRE_Paging: optimized;/usr/local/Cellar/ogre1.9/1.9-20160714-108ab0bcc69603dba32c0ffd4bbbc39051f421c9_8/lib/libOgrePaging.dylib;debug;/usr/local/Cellar/ogre1.9/1.9-20160714-108ab0bcc69603dba32c0ffd4bbbc39051f421c9_8/lib/libOgrePaging.dylib -- Looking for OGRE_Terrain... -- Found OGRE_Terrain: optimized;/usr/local/Cellar/ogre1.9/1.9-20160714-108ab0bcc69603dba32c0ffd4bbbc39051f421c9_8/lib/libOgreTerrain.dylib;debug;/usr/local/Cellar/ogre1.9/1.9-20160714-108ab0bcc69603dba32c0ffd4bbbc39051f421c9_8/lib/libOgreTerrain.dylib -- Looking for OGRE_Property... -- Found OGRE_Property: optimized;/usr/local/Cellar/ogre1.9/1.9-20160714-108ab0bcc69603dba32c0ffd4bbbc39051f421c9_8/lib/libOgreProperty.dylib;debug;/usr/local/Cellar/ogre1.9/1.9-20160714-108ab0bcc69603dba32c0ffd4bbbc39051f421c9_8/lib/libOgreProperty.dylib -- Looking for OGRE_RTShaderSystem... -- Found OGRE_RTShaderSystem: optimized;/usr/local/Cellar/ogre1.9/1.9-20160714-108ab0bcc69603dba32c0ffd4bbbc39051f421c9_8/lib/libOgreRTShaderSystem.dylib;debug;/usr/local/Cellar/ogre1.9/1.9-20160714-108ab0bcc69603dba32c0ffd4bbbc39051f421c9_8/lib/libOgreRTShaderSystem.dylib -- Looking for OGRE_Volume... -- Found OGRE_Volume: optimized;/usr/local/Cellar/ogre1.9/1.9-20160714-108ab0bcc69603dba32c0ffd4bbbc39051f421c9_8/lib/libOgreVolume.dylib;debug;/usr/local/Cellar/ogre1.9/1.9-20160714-108ab0bcc69603dba32c0ffd4bbbc39051f421c9_8/lib/libOgreVolume.dylib -- Looking for OGRE_Overlay... -- Found OGRE_Overlay: optimized;/usr/local/Cellar/ogre1.9/1.9-20160714-108ab0bcc69603dba32c0ffd4bbbc39051f421c9_8/lib/libOgreOverlay.dylib;debug;/usr/local/Cellar/ogre1.9/1.9-20160714-108ab0bcc69603dba32c0ffd4bbbc39051f421c9_8/lib/libOgreOverlay.dylib -- Found Protobuf: /usr/local/lib/libprotobuf.dylib (found suitable version "3.12.4", minimum required is "2.3.0") -- Config-file not installed for ZeroMQ -- checking for pkg-config -- Checking for ... (more)