Initial CMake build scripts

Builds successfully on macOS 10.13, untested but should work on Linux and possibly even even Windows (issues charlesangus#1 and charlesangus#2)

CMakeLists.txt

@@ -0,0 +1,99 @@
+cmake_minimum_required(VERSION 3.4)
+
+# Pick up share/cmake/ modules
+# TODO: Append instead of overriding
+set(CMAKE_MODULE_PATH ${CMAKE_SOURCE_DIR}/share/cmake)
+
+# If CMAKE_INSTALL_EXEC_PREFIX is not specified, install binaries
+# directly into the regular install prefix
+if(NOT CMAKE_INSTALL_EXEC_PREFIX)
+    message("Exec prefix not specified, defaulting to ${CMAKE_INSTALL_PREFIX}")
+    set(CMAKE_INSTALL_EXEC_PREFIX ${CMAKE_INSTALL_PREFIX})
+endif()
+
+# Locate Nuke or error
+find_package(Nuke REQUIRED)
+message("Build Nuke plugins against ${Nuke_LIBRARY_DIR}")
+
+if(Nuke_DDImageVersion VERSION_LESS 11)
+    # No C++11 stuff until compiler update in Nuke 11
+else()
+    set (CMAKE_CXX_STANDARD 11)
+endif()
+
+if(APPLE)
+    # Flag required on OS X to allow Nuke API symbols to be found at runtime
+    set(DEEPC_LINK_FLAGS "-undefined dynamic_lookup")
+else()
+    set(DEEPC_LINK_FLAGS "")
+endif()
+
+
+# Include Nuke headers
+include_directories(
+    ${Nuke_INCLUDE_DIR}
+)
+
+# Add plugins
+add_library(DeepCAddChannels SHARED
+    src/DeepCAddChannels.cpp
+)
+add_library(DeepCBlink SHARED
+    src/DeepCBlink.cpp
+)
+add_library(DeepCGrade SHARED
+    src/DeepCGrade.cpp
+)
+add_library(DeepCID SHARED
+    src/DeepCID.cpp
+)
+add_library(DeepCPMatte SHARED
+    src/DeepCPMatte.cpp
+)
+#add_library(DeepCPNoise SHARED
+#    src/DeepCPNoise.cpp
+#)
+add_library(DeepCRemoveChannels SHARED
+    src/DeepCRemoveChannels.cpp
+)
+add_library(DeepCSaturation SHARED
+    src/DeepCSaturation.cpp
+)
+add_library(DeepCShuffle SHARED
+    src/DeepCShuffle.cpp
+)
+add_library(DeepCWorld SHARED
+    src/DeepCWorld.cpp
+)
+
+
+set_target_properties(
+    DeepCAddChannels
+    DeepCBlink
+    DeepCGrade
+    DeepCID
+    DeepCPMatte
+    #DeepCPNoise
+    DeepCRemoveChannels
+    DeepCSaturation
+    DeepCShuffle
+    DeepCWorld
+
+    PROPERTIES
+    PREFIX "" # No lib prefix
+    LINK_FLAGS "${DEEPC_LINK_FLAGS}"
+)
+
+# Once built, copy the library into install location (e.g "executable-prefix/lib/nuke/6.2")
+install(TARGETS
+    DeepCAddChannels
+    DeepCBlink
+    DeepCGrade
+    DeepCID
+    DeepCPMatte
+    #DeepCPNoise
+    DeepCRemoveChannels
+    DeepCSaturation
+    DeepCShuffle
+    DeepCWorld
+    DESTINATION ${CMAKE_INSTALL_EXEC_PREFIX}/plugins)

README.md

@@ -127,7 +127,18 @@ Possible someday...
 
 ### Mac
 
-Unlikely...
+For Nuke 11, you must have Xcode 8.2 installed with clang (you may be able to use a slightly different version) - see [here for details from Foundry](https://learn.foundry.com/nuke/developers/113/ndkdevguide/appendixa/osx.html). Installing the smaller "Xcode Command Line" also appears to work well, using the command `xcode-select --install`
+
+For older versions of Nuke (10.5 and earlier) the plugins must be built with GCC, not Clang. [This page](https://learn.foundry.com/nuke/developers/105/ndkdevguide/appendixa/osx.html) recommends you use GCC 4.0, but GCC 4.2 appears to work perfectly. However acquiring either of these ancient versions can be a challenge (building the compiler from source is slow but may be the easiest way)
+
+With the appropriate compiler installed, to build:
+
+    mkdir build
+    cd build
+    cmake -D CMAKE_INSTALL_PREFIX=inst -D NUKE_INSTALL_PATH=/Applications/Nuke11.3v1/Nuke11.3v1.app/Contents/MacOS/ ..
+    make install
+
+The path must be changed to the installed version of Nuke. It should be the folder *which contains* the `include/` folder.
 
 ## Contributing
 

share/cmake/FindNuke.cmake

@@ -0,0 +1,97 @@
+#==========
+#
+# Copyright (c) 2010, Dan Bethell.
+# All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions are
+# met:
+#
+#     * Redistributions of source code must retain the above copyright
+#       notice, this list of conditions and the following disclaimer.
+#
+#     * Redistributions in binary form must reproduce the above copyright
+#       notice, this list of conditions and the following disclaimer in the
+#       documentation and/or other materials provided with the distribution.
+#
+#     * Neither the name of Dan Bethell nor the names of any
+#       other contributors to this software may be used to endorse or
+#       promote products derived from this software without specific prior
+#       written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
+# IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
+# THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+# PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
+# CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+# EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+# PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+# PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+# LIABILITY, WHETHER IN CONTRACT, 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.
+#
+#==========
+#
+# Variables defined by this module:
+#   Nuke_FOUND    
+#   Nuke_INCLUDE_DIR
+#   Nuke_COMPILE_FLAGS
+#   Nuke_LINK_FLAGS
+#   Nuke_LIBRARIES
+#   Nuke_LIBRARY_DIR
+#
+# Usage: 
+#   FIND_PACKAGE( Nuke )
+#   FIND_PACKAGE( Nuke REQUIRED )
+#
+# Note:
+# You can tell the module where Nuke is installed by setting
+# the NUKE_INSTALL_PATH (or setting the NDK_PATH environment
+# variable before calling FIND_PACKAGE.
+# 
+# E.g. 
+#   SET( NUKE_INSTALL_PATH "/usr/local/Nuke5.2v3" )
+#   FIND_PACKAGE( Nuke REQUIRED )
+#
+#==========
+
+# our includes
+FIND_PATH( Nuke_INCLUDE_DIR DDImage/Op.h
+  $ENV{NDK_PATH}/include
+  ${NUKE_INSTALL_PATH}/include
+  )
+
+# our library
+FIND_LIBRARY( Nuke_LIBRARIES DDImage
+  $ENV{NDK_PATH}
+  ${NUKE_INSTALL_PATH}
+  )
+
+SET( Nuke_COMPILE_FLAGS "" )
+SET( Nuke_LINK_FLAGS "" )
+IF( ${CMAKE_SYSTEM_NAME} MATCHES "Darwin" )
+    SET( Nuke_COMPILE_FLAGS "-arch i386" )
+    SET( Nuke_LINK_FLAGS "-arch i386" )
+ENDIF( ${CMAKE_SYSTEM_NAME} MATCHES "Darwin" )
+
+# our library path
+GET_FILENAME_COMPONENT( Nuke_LIBRARY_DIR ${Nuke_LIBRARIES} PATH )
+
+# did we find everything?
+INCLUDE( FindPackageHandleStandardArgs )
+FIND_PACKAGE_HANDLE_STANDARD_ARGS( "Nuke" DEFAULT_MSG
+  Nuke_INCLUDE_DIR
+  Nuke_LIBRARIES
+  Nuke_LIBRARY_DIR
+  )
+
+SET( Nuke_DDImageVersion "" )
+IF( NUKE_FOUND )
+  TRY_RUN(NUKE_VERSION_EXITCODE NUKE_VERSION_COMPILED
+    ${CMAKE_BINARY_DIR} ${CMAKE_MODULE_PATH}/TestForDDImageVersion.cxx
+    COMPILE_DEFINITIONS "-I${Nuke_INCLUDE_DIR}"
+    RUN_OUTPUT_VARIABLE Nuke_DDImageVersion)
+  message(STATUS "Nuke_DDImageVersion: --${Nuke_DDImageVersion}--")
+ENDIF()
+

share/cmake/TestForDDImageVersion.cxx

@@ -0,0 +1,15 @@
+#include <iostream>
+#include "DDImage/ddImageVersionNumbers.h"
+int main(int, char*[])
+{
+    // Print a Nuke API identifier number, used to make the
+    // lib/nuke${API_NUMBER} directory
+
+    // Nuke aims to maintain API compatibilty between "v" releases, so
+    // compiling for 6.1v1 will work with 6.1v2 etc (but not
+    // 6.2v1). Only exception has been 5.1v5 and 5.1v6 (because it was
+    // supposed to be 5.2v1)
+    std::cout << kDDImageVersionMajorNum << "." << kDDImageVersionMinorNum;
+    return 0;
+}
+