FindZeroMq

cmake/FindZeroMQ.cmake

@@ -0,0 +1,112 @@
+
+# This file is originally from https://github.com/zeromq/azmq and distributed 
+# under Boost Software Lincese 1.0
+# Boost Software License - Version 1.0 - August 17th, 2003
+
+# Permission is hereby granted, free of charge, to any person or organization
+# obtaining a copy of the software and accompanying documentation covered by
+# this license (the "Software") to use, reproduce, display, distribute,
+# execute, and transmit the Software, and to prepare derivative works of the
+# Software, and to permit third-parties to whom the Software is furnished to
+# do so, all subject to the following:
+
+# The copyright notices in the Software and this entire statement, including
+# the above license grant, this restriction and the following disclaimer,
+# must be included in all copies of the Software, in whole or in part, and
+# all derivative works of the Software, unless such copies or derivative
+# works are solely in the form of machine-executable object code generated by
+# a source language processor.
+
+# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+# FITNESS FOR A PARTICULAR PURPOSE, TITLE AND NON-INFRINGEMENT. IN NO EVENT
+# SHALL THE COPYRIGHT HOLDERS OR ANYONE DISTRIBUTING THE SOFTWARE BE LIABLE
+# FOR ANY DAMAGES OR OTHER LIABILITY, WHETHER IN CONTRACT, TORT OR OTHERWISE,
+# ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+# DEALINGS IN THE SOFTWARE.
+# --------------------------------------------------------------------------------
+
+# Find ZeroMQ Headers/Libs
+
+# Variables
+# ZMQ_ROOT - set this to a location where ZeroMQ may be found
+#
+# ZeroMQ_FOUND - True of ZeroMQ found
+# ZeroMQ_INCLUDE_DIRS - Location of ZeroMQ includes
+# ZeroMQ_LIBRARIES - ZeroMQ libraries
+
+include(FindPackageHandleStandardArgs)
+
+if (NOT ZMQ_ROOT)
+    set(ZMQ_ROOT "$ENV{ZMQ_ROOT}")
+endif()
+
+if (NOT ZMQ_ROOT)
+    find_path(_ZeroMQ_ROOT NAMES include/zmq.h)
+else()
+    set(_ZeroMQ_ROOT "${ZMQ_ROOT}")
+endif()
+
+find_path(ZeroMQ_INCLUDE_DIRS NAMES zmq.h HINTS ${_ZeroMQ_ROOT}/include)
+
+if (ZeroMQ_INCLUDE_DIRS)
+    set(_ZeroMQ_H ${ZeroMQ_INCLUDE_DIRS}/zmq.h)
+
+    function(_zmqver_EXTRACT _ZeroMQ_VER_COMPONENT _ZeroMQ_VER_OUTPUT)
+        set(CMAKE_MATCH_1 "0")
+        set(_ZeroMQ_expr "^[ \\t]*#define[ \\t]+${_ZeroMQ_VER_COMPONENT}[ \\t]+([0-9]+)$")
+        file(STRINGS "${_ZeroMQ_H}" _ZeroMQ_ver REGEX "${_ZeroMQ_expr}")
+        string(REGEX MATCH "${_ZeroMQ_expr}" ZeroMQ_ver "${_ZeroMQ_ver}")
+        set(${_ZeroMQ_VER_OUTPUT} "${CMAKE_MATCH_1}" PARENT_SCOPE)
+    endfunction()
+
+    _zmqver_EXTRACT("ZMQ_VERSION_MAJOR" ZeroMQ_VERSION_MAJOR)
+    _zmqver_EXTRACT("ZMQ_VERSION_MINOR" ZeroMQ_VERSION_MINOR)
+    _zmqver_EXTRACT("ZMQ_VERSION_PATCH" ZeroMQ_VERSION_PATCH)
+
+    message(STATUS "ZeroMQ version: ${ZeroMQ_VERSION_MAJOR}.${ZeroMQ_VERSION_MINOR}.${ZeroMQ_VERSION_PATCH}")
+
+    # We should provide version to find_package_handle_standard_args in the same format as it was requested,
+    # otherwise it can't check whether version matches exactly.
+    if (ZeroMQ_FIND_VERSION_COUNT GREATER 2)
+        set(ZeroMQ_VERSION "${ZeroMQ_VERSION_MAJOR}.${ZeroMQ_VERSION_MINOR}.${ZeroMQ_VERSION_PATCH}")
+    else()
+        # User has requested ZeroMQ version without patch part => user is not interested in specific patch =>
+        # any patch should be an exact match.
+        set(ZeroMQ_VERSION "${ZeroMQ_VERSION_MAJOR}.${ZeroMQ_VERSION_MINOR}")
+    endif()
+
+    if (NOT ${CMAKE_CXX_PLATFORM_ID} STREQUAL "Windows")
+        find_library(ZeroMQ_LIBRARIES NAMES zmq HINTS ${_ZeroMQ_ROOT}/lib)
+    else()
+        find_library(
+            ZeroMQ_LIBRARY_RELEASE
+            NAMES
+                libzmq
+                "libzmq-${CMAKE_VS_PLATFORM_TOOLSET}-mt-${ZeroMQ_VERSION_MAJOR}_${ZeroMQ_VERSION_MINOR}_${ZeroMQ_VERSION_PATCH}"
+            HINTS
+                ${_ZeroMQ_ROOT}/lib
+            )
+
+        find_library(
+            ZeroMQ_LIBRARY_DEBUG
+            NAMES
+                libzmq_d
+                "libzmq-${CMAKE_VS_PLATFORM_TOOLSET}-mt-gd-${ZeroMQ_VERSION_MAJOR}_${ZeroMQ_VERSION_MINOR}_${ZeroMQ_VERSION_PATCH}"
+            HINTS
+                ${_ZeroMQ_ROOT}/lib)
+
+        # On Windows we have to use corresponding version (i.e. Release or Debug) of ZeroMQ because of `errno` CRT global variable
+        # See more at http://www.drdobbs.com/avoiding-the-visual-c-runtime-library/184416623
+        set(ZeroMQ_LIBRARIES optimized "${ZeroMQ_LIBRARY_RELEASE}" debug "${ZeroMQ_LIBRARY_DEBUG}")
+    endif()
+endif()
+
+find_package_handle_standard_args(ZeroMQ FOUND_VAR ZeroMQ_FOUND
+    REQUIRED_VARS ZeroMQ_INCLUDE_DIRS ZeroMQ_LIBRARIES
+    VERSION_VAR ZeroMQ_VERSION)
+
+if (ZeroMQ_FOUND)
+    mark_as_advanced(ZeroMQ_INCLUDE_DIRS ZeroMQ_LIBRARIES ZeroMQ_VERSION
+        ZeroMQ_VERSION_MAJOR ZeroMQ_VERSION_MINOR ZeroMQ_VERSION_PATCH)
+endif()