CMakeLists.txt

cmake_minimum_required (VERSION 3.2.2)
cmake_policy (SET CMP0048 NEW)  # Allow VERSION specifier in project()
project (OSL
         VERSION 1.10.0
         LANGUAGES CXX C)
set (PROJ_NAME ${PROJECT_NAME})    # short name
string (TOLOWER ${PROJ_NAME} PROJ_NAME_LOWER)  # short name lower case
set (PROJECT_VERSION_RELEASE_TYPE "dev")   # "dev", "betaX", "RCY", ""
set (${PROJECT_NAME}_VERSION_RELEASE_TYPE ${PROJECT_VERSION_RELEASE_TYPE})
set (PROJECT_COPYRIGHTYEARS "2008-2017")
set (PROJECT_AUTHORS "Sony Pictures Imageworks, et al")
set (PROJECT_URL "")

set (PROJECT_VERSION_MAJORMINOR
     "${PROJECT_VERSION_MAJOR}.${PROJECT_VERSION_MINOR}")
message (STATUS "Building ${PROJECT_NAME} ${PROJECT_VERSION}")
message (STATUS "CMake version is ${CMAKE_VERSION}")
cmake_policy (SET CMP0017 NEW)  # Prefer files from the CMake module directory when including from there.
cmake_policy (SET CMP0025 NEW)  # Detect AppleClang for new CMake
cmake_policy (SET CMP0046 OLD)  # Don't error on non-existent dependency in add_dependencies.
set (CMAKE_ALLOW_LOOSE_LOOP_CONSTRUCTS TRUE)

# Deprecated names
set (OSL_LIBRARY_VERSION_PATCH ${PROJECT_VERSION_PATCH})
set (OSL_LIBRARY_VERSION_MINOR ${PROJECT_VERSION_MINOR})
set (OSL_LIBRARY_VERSION_MAJOR ${PROJECT_VERSION_MAJOR})
set (OSL_LIBRARY_VERSION_RELEASE_TYPE ${PROJECT_VERSION_RELEASE_TYPE})

# Version of the OSO file format and instruction set
set (OSO_FILE_VERSION_MAJOR 1)
set (OSO_FILE_VERSION_MINOR 0)

if (VERBOSE)
    message (STATUS "Project source dir = ${PROJECT_SOURCE_DIR}")
endif ()
message (STATUS "Project build dir   = ${CMAKE_BINARY_DIR}")
message (STATUS "Project install dir = ${CMAKE_INSTALL_PREFIX}")

if ("${PROJECT_SOURCE_DIR}" STREQUAL "${CMAKE_BINARY_DIR}")
    message (FATAL_ERROR "Not allowed to run in-source build!")
endif ()

if (NOT CMAKE_BUILD_TYPE)
    set (CMAKE_BUILD_TYPE "Release")
endif ()
if (CMAKE_BUILD_TYPE STREQUAL "Debug")
    set (DEBUGMODE ON)
endif ()

option (CMAKE_USE_FOLDERS "Use the FOLDER target property to organize targets into folders." ON)
mark_as_advanced (CMAKE_USE_FOLDERS)
if (CMAKE_USE_FOLDERS)
    set_property (GLOBAL PROPERTY USE_FOLDERS ON)
endif ()

include (GNUInstallDirs)

set (CMAKE_MODULE_PATH
     "${PROJECT_SOURCE_DIR}/src/cmake/modules"
     "${PROJECT_SOURCE_DIR}/src/cmake")

include (platform)
include (compiler)   # All the C++ and compiler related options live here


## enable RTTI
##   NOTE: LLVM builds without RTTI by default so beware
##   if you find the need to turn this on, to use OSL in a
##   project that requires RTTI for example, you need to build
##   LLVM with RRTI, otherwise OSL classes extending LLVM ones
##   will cause linker errors.
set (ENABLERTTI OFF CACHE BOOL "Build with RTTI. Requires a LLVM build with RTTI enabled.")
if (NOT ENABLERTTI)
    if (MSVC)
        set ( CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} /GR-" )
    else ()
        set ( CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -fno-rtti" )
    endif()
endif()


option (VERBOSE "Print lots of messages while compiling" OFF)
set (${PROJ_NAME}_NAMESPACE ${PROJECT_NAME} CACHE STRING "Customized outer namespace base name (version will be added)")
option (OSL_BUILD_TESTS "Build the unit tests, testshade, testrender" ON)
if (WIN32)
    option (USE_LLVM_BITCODE "Generate embedded LLVM bitcode" OFF)
else ()
    option (USE_LLVM_BITCODE "Generate embedded LLVM bitcode" ON)
endif ()
option (USE_PARTIO "Use Partio if found" ON)
set (PARTIO_HOME "" CACHE STRING "Search path for Partio components")
set (PUGIXML_HOME "" CACHE STRING "Hint about where to find external PugiXML library")
option (USE_FAST_MATH "Use fast math approximations (if no, then use system math library)" ON)
option (OSL_BUILD_PLUGINS "Bool OSL plugins, for example OIIO plugin" ON)
option (USE_BOOST_WAVE "Use Boost Wave for C preprocessor (alternative is to use clang)" OFF)


# set (USE_OIIO_STATIC ON CACHE BOOL "If OIIO is built static")
# if (USE_OIIO_STATIC)
#     add_definitions ("-DOIIO_STATIC_BUILD=1")
# endif ()

set (OSL_NO_DEFAULT_TEXTURESYSTEM OFF CACHE BOOL "Do not use create a raw OIIO::TextureSystem")
if (OSL_NO_DEFAULT_TEXTURESYSTEM)
    add_definitions ("-DOSL_NO_DEFAULT_TEXTURESYSTEM=1")
endif ()

if (USE_FAST_MATH)
    add_definitions ("-DOSL_FAST_MATH=1")
else ()
    add_definitions ("-DOSL_FAST_MATH=0")
endif ()


# Set the default namespace
set (PROJ_NAMESPACE "${${PROJ_NAME}_NAMESPACE}")
set (PROJ_NAMESPACE_V "${PROJ_NAMESPACE}_v${PROJECT_VERSION_MAJOR}_${PROJECT_VERSION_MINOR}")
message(STATUS "Setting Namespace to: ${PROJ_NAMESPACE_V}")

include (util_macros)
include (externalpackages)
include (flexbison)
include (install)          # installation options all implemented here

include_directories (
    BEFORE
    "${CMAKE_SOURCE_DIR}/src/include"
    "${CMAKE_BINARY_DIR}/include"
  )




###########################################################################


# We want CTest for testing
# N.B. This needs to be added before any of the subdirectories, or
# their add_test commands will not register.
include (CTest)


# Tell CMake to process the sub-directories
add_subdirectory (src/include)
add_subdirectory (src/liboslcomp)
add_subdirectory (src/liboslquery)
add_subdirectory (src/liboslexec)
add_subdirectory (src/liboslnoise)

add_subdirectory (src/oslc)
add_subdirectory (src/oslinfo)

if (OSL_BUILD_TESTS)
add_subdirectory (src/testshade)
add_subdirectory (src/testrender)
endif ()

if (OSL_BUILD_PLUGINS)
add_subdirectory (src/osl.imageio)
endif ()

add_subdirectory (src/shaders)
add_subdirectory (src/shaders/MaterialX)

if (INSTALL_DOCS)
add_subdirectory (src/doc)
endif ()



#########################################################################
# Testing

# Make a build/platform/testsuite directory, and copy the master runtest.py
# there. The rest is up to the tests themselves.
file (MAKE_DIRECTORY "${CMAKE_BINARY_DIR}/testsuite")
add_custom_command (OUTPUT "${CMAKE_BINARY_DIR}/testsuite/runtest.py"
                    COMMAND ${CMAKE_COMMAND} -E copy_if_different
                        "${CMAKE_SOURCE_DIR}/testsuite/runtest.py"
                        "${CMAKE_BINARY_DIR}/testsuite/runtest.py"
                    MAIN_DEPENDENCY "${CMAKE_SOURCE_DIR}/testsuite/runtest.py")
add_custom_target ( CopyFiles ALL DEPENDS "${CMAKE_BINARY_DIR}/testsuite/runtest.py" )

macro ( TESTSUITE )
    cmake_parse_arguments (_ats "" "LABEL" "" ${ARGN})
    # If there was a FOUNDVAR param specified and that variable name is
    # not defined, mark the test as broken.
    if (_ats_FOUNDVAR AND NOT ${_ats_FOUNDVAR})
        set (_ats_LABEL "broken")
    endif ()
    # Add the tests if all is well.
    set (ALL_TEST_LIST "")
    foreach (_testname ${_ats_UNPARSED_ARGUMENTS})
        set (_testsrcdir "${CMAKE_SOURCE_DIR}/testsuite/${_testname}")
        set (_testdir "${CMAKE_BINARY_DIR}/testsuite/${_testname}")
        if (_ats_LABEL MATCHES "broken")
            set (_testname "${_testname}-broken")
        endif ()
        set (_runtest python "${CMAKE_BINARY_DIR}/testsuite/runtest.py"
                             ${_testdir} ${_extra_test_args})
        if (MSVC_IDE)
            set (_runtest ${_runtest} --devenv-config $<CONFIGURATION>
                                      --solution-path "${CMAKE_BINARY_DIR}" )
        endif ()

        file (MAKE_DIRECTORY "${_testdir}")

        # Run the test unoptimized, unless it's a "render_*" or "oslinfo_*"
        # test, which we don't bother testing unoptimized.
        if (NOT _testname MATCHES "^render" AND
            NOT _testname MATCHES "^oslinfo" AND
            NOT _testname MATCHES "^getattribute-shader" AND
            NOT EXISTS "${_testsrcdir}/OPTIMIZEONLY")
          set (_env TESTSHADE_OPT=0 OPENIMAGEIOHOME=${OPENIMAGEIOHOME})
          add_test ( NAME ${_testname}
                     COMMAND env ${_env} ${_runtest} )
        endif ()
        # Run the same test again with aggressive -O2 runtime
        # optimization, triggered by setting TESTSHADE_OPT env variable
        set (_env TESTSHADE_OPT=2 OPENIMAGEIOHOME=${OPENIMAGEIOHOME})
        set (ALL_TEST_LIST "${ALL_TEST_LIST} ${_testname}")
        add_test ( NAME ${_testname}.opt
                   COMMAND env ${_env} ${_runtest} )
    endforeach ()
    if (VERBOSE)
        message (STATUS "Added tests: ${ALL_TEST_LIST}")
    endif ()
endmacro ()

if (OSL_BUILD_TESTS)
# List all the individual testsuite tests here, except those that need
# special installed tests.
TESTSUITE ( and-or-not-synonyms aastep arithmetic array array-derivs array-range
            blackbody blendmath breakcont
            bug-array-heapoffsets
            bug-locallifetime bug-outputinit bug-param-duplicate bug-peep
            cellnoise closure closure-array color comparison
            compile-buffer
            component-range const-array-params const-array-fill
            debugnan debug-uninit
            derivs derivs-muldiv-clobber
            draw_string
            error-dupes exit exponential
            fprintf
            function-earlyreturn function-simple function-outputelem
            geomath getattribute-camera getattribute-shader
            getsymbol-nonheap gettextureinfo
            group-outputs groupstring
            hash hashnoise hex hyperb
            ieee_fp if incdec initops intbits isconnected isconstant
            layers layers-Ciassign layers-entry layers-lazy
            layers-nonlazycopy layers-repeatedoutputs
            linearstep
            logic loop matrix message
            mergeinstances-nouserdata mergeinstances-vararray
            metadata-braces miscmath missing-shader
            noise noise-cell
            noise-gabor noise-gabor2d-filter noise-gabor3d-filter
            noise-perlin noise-uperlin noise-simplex noise-usimplex
            pnoise pnoise-cell pnoise-gabor pnoise-perlin pnoise-uperlin
            operator-overloading
            oslc-comma oslc-D
            oslc-err-arrayindex oslc-err-closuremul
            oslc-err-format oslc-err-intoverflow
            oslc-err-noreturn oslc-err-notfunc
            oslc-err-outputparamvararray oslc-err-paramdefault
            oslc-err-struct-array-init oslc-err-struct-ctr
            oslc-err-struct-dup
            oslc-warn-commainit
            oslc-variadic-macro
            oslc-version
            oslinfo-arrayparams oslinfo-colorctrfloat
            oslinfo-metadata oslinfo-noparams
            osl-imageio
            paramval-floatpromotion
            printf-whole-array
            raytype raytype-specialized reparam
            render-background render-bumptest
            render-cornell render-furnace-diffuse
            render-microfacet render-oren-nayar render-veachmis render-ward
            select shortcircuit spline splineinverse
            spline-boundarybug spline-derivbug
            string
            struct struct-array struct-array-mixture
            struct-err struct-init-copy
            struct-isomorphic-overload struct-layers
            struct-operator-overload struct-return struct-with-array
            struct-nested struct-nested-assign struct-nested-deep
            ternary
            testshade-expr
            texture-alpha texture-blur texture-connected-options
            texture-derivs texture-errormsg
            texture-firstchannel texture-interp
            texture-missingcolor texture-simple
            texture-smallderivs texture-swirl texture-udim
            texture-width texture-withderivs texture-wrap
            trailing-commas
            transitive-assign
            transform transformc trig typecast
            unknown-instruction
            vararray-connect vararray-default
            vararray-deserialize vararray-param
            vecctr vector
            wavelength_color xml )

# Only run field3d-related tests if the local OIIO was built with f3d support.
EXECUTE_PROCESS ( COMMAND ${OPENIMAGEIO_BIN}/oiiotool --help
                  OUTPUT_VARIABLE oiiotool_help )
if (oiiotool_help MATCHES "field3d")
    TESTSUITE ( texture-field3d )
endif()

# Only run pointcloud tests if Partio is found
if (PARTIO_FOUND)
    TESTSUITE ( pointcloud pointcloud-fold )
endif ()

# FIXME: still working on MaterialX testsuite
# add_subdirectory(testsuite/MaterialX)

endif (OSL_BUILD_TESTS)



#########################################################################
# Packaging
set (CPACK_PACKAGE_VERSION_MAJOR ${PROJECT_VERSION_MAJOR})
set (CPACK_PACKAGE_VERSION_MINOR ${PROJECT_VERSION_MINOR})
set (CPACK_PACKAGE_VERSION_PATCH ${PROJECT_VERSION_PATCH})
# "Vendor" is only used in copyright notices, so we use the same thing that
# the rest of the copyright notices say.
set (CPACK_PACKAGE_VENDOR ${PROJECT_AUTHORS})
set (CPACK_PACKAGE_DESCRIPTION_SUMMARY "OpenShadingLanguage is...")
set (CPACK_PACKAGE_DESCRIPTION_FILE "${PROJECT_SOURCE_DIR}/src/doc/Description.txt")
set (CPACK_PACKAGE_FILE_NAME ${PROJECT_NAME}-${PROJECT_VERSION_MAJOR}.${PROJECT_VERSION_MINOR}.${PROJECT_VERSION_PATCH}-${platform})
file (COPY "${PROJECT_SOURCE_DIR}/LICENSE" DESTINATION "${CMAKE_BINARY_DIR}")
file (RENAME "${CMAKE_BINARY_DIR}/LICENSE" "${CMAKE_BINARY_DIR}/License.txt")
set (CPACK_RESOURCE_FILE_LICENSE "${CMAKE_BINARY_DIR}/License.txt")
file (COPY "${PROJECT_SOURCE_DIR}/README.md" DESTINATION "${CMAKE_BINARY_DIR}")
file (RENAME "${CMAKE_BINARY_DIR}/README.md" "${CMAKE_BINARY_DIR}/Readme.txt")
set (CPACK_RESOURCE_FILE_README "${CMAKE_BINARY_DIR}/Readme.txt")
set (CPACK_RESOURCE_FILE_WELCOME "${PROJECT_SOURCE_DIR}/src/doc/Welcome.txt")
#set (CPACK_PACKAGE_EXECUTABLES I'm not sure what this is for)
#set (CPACK_STRIP_FILES Do we need this?)
if (${CMAKE_SYSTEM_NAME} STREQUAL "Linux")
    set (CPACK_GENERATOR "TGZ;STGZ;RPM;DEB")
    set (CPACK_SOURCE_GENERATOR "TGZ")
endif ()
if (APPLE)
    set (CPACK_GENERATOR "TGZ;STGZ;PackageMaker")
    set (CPACK_SOURCE_GENERATOR "TGZ")
endif ()
set (CPACK_SOURCE_PACKAGE_FILE_NAME ${PROJECT_NAME}-${PROJECT_VERSION_MAJOR}.${PROJECT_VERSION_MINOR}.${PROJECT_VERSION_PATCH}-source)
#set (CPACK_SOURCE_STRIP_FILES ...FIXME...)
set (CPACK_SOURCE_IGNORE_FILES ".*~")
include (CPack)