I want to build a library libpng from source which requires libz which in turn I also want to build from source. I have one CMakeLists.txt file so far and the part that defines the build steps for both libraries looks like this:
if(NOT EXISTS ${CMAKE_BINARY_DIR}/build-zlib/build/libz.a)
file(DOWNLOAD https://www.zlib.net/zlib-1.2.11.tar.gz zlib.tar.gz TLS_VERIFY ON)
file(ARCHIVE_EXTRACT INPUT zlib.tar.gz)
include(ExternalProject)
ExternalProject_Add(zlib
SOURCE_DIR ${CMAKE_BINARY_DIR}/zlib-1.2.11
BINARY_DIR ${CMAKE_BINARY_DIR}/build-zlib/build
INSTALL_COMMAND cmake -E echo "Skipping install"
CMAKE_ARGS -DCMAKE_POSITION_INDEPENDENT_CODE=ON
)
message(STATUS "zlib will be built during 'make'")
endif()
if(NOT EXISTS ${CMAKE_BINARY_DIR}/build-png/build/libpng.a)
include(ExternalProject)
ExternalProject_Add(png
GIT_REPOSITORY "https://github.com/glennrp/libpng.git"
GIT_TAG "v1.6.37"
BINARY_DIR ${CMAKE_BINARY_DIR}/build-png/build
INSTALL_COMMAND cmake -E echo "Skipping install"
CMAKE_ARGS -DCMAKE_POSITION_INDEPENDENT_CODE=ON
)
message(STATUS "libpng will be built during 'make'")
endif()
There are two problems: First, CMake doesn't know that libz has to be built before libpng. Second, even if libz would be built before, CMake doesn't know that libz will be placed in ${CMAKE_BINARY_DIR}/build-zlib/build. I suppose the second problem may be fixed by adding list(APPEND CMAKE_PREFIX_PATH ${CMAKE_BINARY_DIR}/build-zlib/build) (please correct me if I'm wrong) but how do I deal with the first problem? Freely I've tried to add add_dependencies(png zlib) but libz is not getting built before libpng. The error message therefore states that libz can't be found:
CMake Error at /snap/cmake/876/share/cmake-3.20/Modules/FindPackageHandleStandardArgs.cmake:230 (message):
Could NOT find ZLIB (missing: ZLIB_LIBRARY ZLIB_INCLUDE_DIR)
Related
I want to use protobuf in my C++ library. All dependencies so far are included using cmake's FetchContent module. I want to do the same with protobuf. However, I run into the following problem: Unknown CMake command "protobuf_generate_cpp". Any hints on how to solve this?
Excerpt of my CMakeLists.txt:
FetchContent_Declare(fmt
GIT_REPOSITORY https://github.com/fmtlib/fmt.git
GIT_TAG 9.0.0)
FetchContent_Declare(protobuf
GIT_REPOSITORY https://github.com/protocolbuffers/protobuf.git
GIT_TAG v21.4)
FetchContent_MakeAvailable(fmt protobuf)
include_directories(${Protobuf_INCLUDE_DIRS})
include_directories(${CMAKE_CURRENT_BINARY_DIR})
protobuf_generate_cpp(PROTO_SRCS PROTO_HDRS message.proto)
This works for me:
FetchContent_Declare(protobuf
GIT_REPOSITORY https://github.com/protocolbuffers/protobuf.git
GIT_TAG v21.4
SOURCE_SUBDIR cmake
FIND_PACKAGE_ARGS NAMES protobuf
)
FetchContent_MakeAvailable(protobuf)
On the consumer end do this
include(FindProtobuf)
find_package(protobuf CONFIG REQUIRED)
Note: This has only been tested on CMake v3.25
protobuf_generate_cpp is from FindProtobuf. It doesn't seem to work with a protoc that was build in the project with FetchContent. You'll have to call the protoc binary explicitly.
set(GENERATED_CODE_DIR ${CMAKE_CURRENT_BINARY_DIR}/generated)
set(PROTO_SRCS ${GENERATED_CODE_DIR}/message.pb.cc)
set(PROTO_HDRS ${GENERATED_CODE_DIR}/message.pb.h)
set(PROTOC ${protobuf_BINARY_DIR}/protoc)
set(PROTO_DIR ${CMAKE_CURRENT_SOURCE_DIR})
add_custom_command(
OUTPUT ${PROTO_SRCS} ${PROTO_HDRS}
COMMAND ${PROTOC} --proto_path ${PROTO_DIR} message.proto --cpp_out ${GENERATED_CODE_DIR}
DEPENDS ${PROTOC} ${PROTO_DIR}/message.proto
)
I am using the FetchContent feature from CMake (3.12) and declaring it like this:
FetchContent_Declare(libsndfile
GIT_REPOSITORY ${LIBSNDFILE_GIT_REPO}
GIT_TAG ${LIBSNDFILE_GIT_TAG}
GIT_CONFIG advice.detachedHead=false
SOURCE_DIR "${CMAKE_BINARY_DIR}/libsndfile"
BINARY_DIR "${CMAKE_BINARY_DIR}/libsndfile-build"
CMAKE_ARGS "-Wno-dev"
CONFIGURE_COMMAND ""
BUILD_COMMAND ""
INSTALL_COMMAND ""
TEST_COMMAND ""
)
According to the CMake documentation:
FetchContent_Declare: The <contentOptions> can be any of the download or update/patch options that the ExternalProject_Add() command understands
And according to the ExternalProject_Add documentation, "The specified arguments are passed to the cmake command line" when using CMAKE_ARGS.
The -Wno-dev option does not seem to be passed along as I continue to see this warning messages in the output:
CMake Warning (dev) at /Volumes/Vault/misc/src/libsndfile/CMakeLists.txt:446 (add_executable):
Policy CMP0063 is not set: Honor visibility properties for all target
types. Run "cmake --help-policy CMP0063" for policy details. Use the
cmake_policy command to set the policy and suppress this warning.
Target "sndfile-interleave" of type "EXECUTABLE" has the following
visibility properties set for C:
C_VISIBILITY_PRESET
For compatibility CMake is not honoring them for this target.
This warning is for project developers. Use -Wno-dev to suppress it.
I believe I am following the documentation but it seems I must be doing something wrong. Any idea what could be wrong?
Edit: As requested in comment, here is a complete example:
File CMakeLists.txt
cmake_minimum_required(VERSION 3.12)
project(self_contained_libsndfile_example)
set(CMAKE_CXX_STANDARD 14)
# This is in order to trigger the warnings in FetchContent
set(CMAKE_C_VISIBILITY_PRESET hidden)
include(FetchContent)
set(LIBSNDFILE_GIT_REPO "https://github.com/erikd/libsndfile" CACHE STRING "libsndfile git repository url" FORCE)
set(LIBSNDFILE_GIT_TAG b4bd397ca74f4c72b9cabaae66fef0c3d5a8c527 CACHE STRING "libsndfile git tag" FORCE)
FetchContent_Declare(libsndfile
GIT_REPOSITORY ${LIBSNDFILE_GIT_REPO}
GIT_TAG ${LIBSNDFILE_GIT_TAG}
GIT_CONFIG advice.detachedHead=false
SOURCE_DIR "${CMAKE_BINARY_DIR}/libsndfile"
BINARY_DIR "${CMAKE_BINARY_DIR}/libsndfile-build"
CMAKE_ARGS "-Wno-dev"
CONFIGURE_COMMAND ""
BUILD_COMMAND ""
INSTALL_COMMAND ""
TEST_COMMAND ""
)
FetchContent_GetProperties(libsndfile)
if(NOT libsndfile_POPULATED)
FetchContent_Populate(libsndfile)
endif()
set(LIBSNDFILE_ROOT_DIR ${libsndfile_SOURCE_DIR})
set(LIBSNDFILE_INCLUDE_DIR "${libsndfile_BINARY_DIR}/src")
add_subdirectory(${libsndfile_SOURCE_DIR} ${libsndfile_BINARY_DIR} EXCLUDE_FROM_ALL)
file(COPY "${libsndfile_SOURCE_DIR}/src/sndfile.hh" DESTINATION ${LIBSNDFILE_INCLUDE_DIR})
include_directories(${LIBSNDFILE_INCLUDE_DIR})
set(target self_contained_libsndfile_example)
add_executable(${target} main.cpp)
target_link_libraries(${target} PRIVATE sndfile)
With the fix of this CMake-issue, which will go into CMake 3.17, you could point variable CMAKE_PROJECT_sndfile_INCLUDE_BEFORE to a file which sets the CMake-policy CMP0063 appropriately and which will automatically be included before the call to project(sndfile). As a result you won't get this warning for your fetched project.
This is a misunderstanding of the CMake documentation. The CMAKE_ARGS is part of the Configure Step options not download or update/patch options of the ExternalProject_Add() and is ignored.
Looking at the documentation for CMake (3.12) [https://cmake.org/cmake/help/v3.12/module/FetchContent.html]
The contentOptions can be any of the download or update/patch
options that the ExternalProject_Add() command understands. The
configure, build, install and test steps are explicitly disabled and
therefore options related to them will be ignored.
To avoid the messages you see you need to invoke cmake as cmake -Wno-dev on the command line when building your project.
I have to download zlib to use in my project.
I use externlproject_add() to downaload all zlib repository, build and install it.
After it, I want do install a lib that is part of zlib repository: minizip.
How to set this dependency on cmake?
zlib module:
cmake_minimum_required ( VERSION 2.8.7 )
include (ExternalProject)
if(UNIX)
# An external project for zlib
SET (GIT_URL https://github.com/madler/zlib.git)
SET (ZLIB_INSTALL ${CMAKE_CURRENT_BINARY_DIR})
SET (ZLIB_INCLUDE ${CMAKE_BINARY_DIR}/include/zlib)
SET (ZLIB_STATIC ${CMAKE_BINARY_DIR}/lib/libz.a )
SET (MINIZIP_DIR ${CMAKE_CURRENT_BINARY_DIR}/ZLIB/src/ZLIB/contrib/minizip)
ExternalProject_Add(zlib
PREFIX zlib
GIT_REPOSITORY ${GIT_URL}
INSTALL_DIR ${ZLIB_INSTALL}
PATCH_COMMAND ${CMAKE_COMMAND} -E remove <SOURCE_DIR>/zconf.h
BUILD_IN_SOURCE 1
PATCH_COMMAND ""
CONFIGURE_COMMAND <SOURCE_DIR>/configure --prefix=<INSTALL_DIR> --includedir=${ZLIB_INCLUDE}
)
find_package(ZLIB REQUIRED)
if(ZLIB_FOUND)
add_subdirectory (${MINIZIP_DIR})
endif(ZLIB_FOUND)
SET (ZLIB_INCLUDE_DIR ${ZLIB_INSTALL}/include/zlib)
SET (ZLIB_LIBRARY "${ZLIB_INSTALL}")
ADD_LIBRARY (ZLIB_LIB STATIC IMPORTED DEPENDS zlib)
SET_TARGET_PROPERTIES (ZLIB_LIB PROPERTIES IMPORTED_LOCATION "${ZLIB_STATIC}")
endif(UNIX)
With this zlib module I have an error that following directory
/home/lais/Imagens/agent/build/ZLIB/src/ZLIB/contrib/minizip
doesn't exist yet when I run
cmake ..
And it's true. Doesn't exist yet. I should tell cmake it. But I don't know how to do it.
I solved it download a zip file that have minizip.
cmake_minimum_required ( VERSION 2.8.7 )
include (ExternalProject)
project (zlib)
if(UNIX)
# An external project for zlib
SET (URL http://www.winimage.com/zLibDll/unzip101e.zip)
SET (MINIZIP_INSTALL ${CMAKE_CURRENT_BINARY_DIR})
SET (MINIZIP_STATIC ${CMAKE_BINARY_DIR}/lib/minizip.a )
message ("zlib = ${zlib}")
ExternalProject_Add(minizip
DEPENDS zlib
PREFIX minizip
URL ${URL}
INSTALL_DIR ${MINIZIP_INSTALL}
BUILD_IN_SOURCE make
CONFIGURE_COMMAND ""
)
SET (MINIZIP_LIBRARY "${MINIZIP_INSTALL}")
ADD_LIBRARY (MINIZIP_LIB STATIC IMPORTED DEPENDS minizip, zlib)
SET_TARGET_PROPERTIES (MINIZIP_LIB PROPERTIES IMPORTED_LOCATION "${MINIZIP_STATIC}")
endif(UNIX)
I'm attempting to build a small project using glfw3 but no matter what I do I can't get pkgconfig to set GLFW_LIBRARIES.
Here is my CMakeList.txt
cmake_minimum_required(VERSION 3.3)
project(LearnGLSL)
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=c++11")
if (CMAKE_BUILD_TYPE STREQUAL "")
set(CMAKE_BUILD_TYPE Debug)
endif()
if(CMAKE_BUILD_TYPE STREQUAL "Debug")
set(CMAKE_RUNTIME_OUTPUT_DIRECTORY "${CMAKE_SOURCE_DIR}/build/debug")
set(PROJECT_BINARY_DIR "${CMAKE_SOURCE_DIR}/build/debug")
endif(CMAKE_BUILD_TYPE STREQUAL "Debug")
file(MAKE_DIRECTORY ${PROJECT_BINARY_DIR})
set(CMAKE_RUNTIME_OUTPUT_DIRECTORY ${PROJECT_BINARY_DIR})
find_package(OpenGL REQUIRED)
find_package(PkgConfig REQUIRED)
pkg_check_modules(GLFW REQUIRED glfw3)
include_directories(
${OPENGL_INCLUDE_DIR}
${GLFW_INCLUDE_DIRS}
)
set(SOURCE_FILES main.cpp gl_core_4_3.cpp)
message(WARNING "${GLFW_LIBRARIES}")
add_executable(LearnGLSL ${SOURCE_FILES})
target_link_libraries(LearnGLSL ${OPENGL_gl_LIBRARY} ${GLFW_LIBRARIES})
add_custom_command(TARGET LearnGLSL POST_BUILD
COMMAND ${CMAKE_COMMAND} -E copy_directory
${CMAKE_SOURCE_DIR}/assets
${PROJECT_BINARY_DIR}
COMMENT "Copy resources to build tree")
Here is where glfw3 is installed
-- Installing: /usr/local/include/GLFW
-- Installing: /usr/local/include/GLFW/glfw3native.h
-- Installing: /usr/local/include/GLFW/glfw3.h
-- Installing: /usr/local/lib/cmake/glfw/glfw3Config.cmake
-- Installing: /usr/local/lib/cmake/glfw/glfw3ConfigVersion.cmake
-- Installing: /usr/local/lib/cmake/glfw/glfwTargets.cmake
-- Installing: /usr/local/lib/cmake/glfw/glfwTargets-noconfig.cmake
-- Installing: /usr/local/lib/pkgconfig/glfw3.pc
-- Installing: /usr/local/lib/libglfw3.a
I'll be the first to admit I'm not super comfortable with CMAKE but this seems simple enough and I've done everything I can google to find. maybe its a typo i'm not noticing. Any help is appreciated thanks
Oh i forgot to mention I get undefined references to the glfw functions when building this project. I assumed this is a result of GLFW_LIBRARIES not properly getting set tho.
I don't know about finding GLFW with pkgconfig but I don't think you need pkgconfig in this case. Since GLFW itself builds with CMake it should install a native CMake config module, which it does.
Well, almost. The official GLFW CMake config-module support is a bit buggy as of v3.1.2. Instead, use shaxbee's fork or the adasworks fork (based on shaxbee's but newer)
With that GLFW all you need to find it is just 2 lines:
find_package(glfw3 REQUIRED)
...
target_link_libraries(LearnGLSL ... glfw)
I also found a few other problems in your CMakeLists.txt so I repeat the whole script, revised:
cmake_minimum_required(VERSION 3.3)
project(LearnGLSL)
set(CMAKE_CXX_STANDARD 11) # no explicit compiler flags if possible
# don't read CMAKE_BUILD_TYPE, it has no meaning with multiconfig
# generators
set(CMAKE_RUNTIME_OUTPUT_DIRECTORY_DEBUG "${CMAKE_SOURCE_DIR}/build/debug")
# PROJECT_BINARY_DIR should not be set at all
# You establish the BINARY_DIR with the initial cmake command
set(CMAKE_RUNTIME_OUTPUT_DIRECTORY ${PROJECT_BINARY_DIR})
find_package(OpenGL REQUIRED)
find_package(glfw3 REQUIRED)
include_directories(${OPENGL_INCLUDE_DIR})
add_executable(LearnGLSL main.cpp gl_core_4_3.cpp)
target_link_libraries(LearnGLSL ${OPENGL_gl_LIBRARY} glfw)
add_custom_command(TARGET LearnGLSL POST_BUILD
COMMAND ${CMAKE_COMMAND} -E copy_directory
${CMAKE_SOURCE_DIR}/assets
${PROJECT_BINARY_DIR}
COMMENT "Copy resources to build tree")
Since CMake 3.1 pkg_check_modules uses additional paths from CMAKE_PREFIX_PATH variable for search .pc files. Searching is performed in similar manner as in command find_library, but additional subdirectory pkgconfig/ is added to the resulted path. Specifically, for each <prefix> in CMAKE_PREFIX_PATH, .pc file is searched in next directory:
<prefix>/lib[64]/[<arch>/]pkgconfig
(suffix 64 and arhitecture-specific subdirectory is added when appropriate).
So having file /usr/local/lib/pkgconfig/glfw3.pc, you need to set CMAKE_PREFIX_PATH to /usr/local for pkg_check_modules is able to find it. Variable can be set either:
1) In the CMakeLists.txt script itself, or
2) In the command line
cmake -DCMAKE_PREFIX_PATH=<...> <source-dir>
3) As environment one (OS-dependent).
Before CMake 3.1 (and after it) additional search directory can be specified via PKG_CONFIG_PATH environment variable.
E.g. with file /usr/local/lib/pkgconfig/glfw3.pc variable PKG_CONFIG_PATH should contain /usr/local/lib/pkgconfig.
I have an application with a mildly complicated build process, and as a bit of a newb to CMake, I was wondering if anyone could provide me with any pointers.
At preset, the application consists of a single executable, built from a source tree provided in the src and include folders.
It requires a few libraries to work, the big ones being Boost and Python. Python is embedded in the application, and Boost requires knowledge of the custom python install at compile time. I also use Qt, but I'm just linking against the system Qt for this.
What I'd like to have at the end is a stage folder, containing the compiled executable, and a lib folder with the required boost and python libraries.
At present, I have a single CMakeLists.txt file, and I am using ExternalProject to build Boost and Python from bzipped tarballs of their source. It gets a little messy where I copy out the compiled libs from the prefixed install directories.
Things are working, but I have a feeling I'm doing things very backwards. I sometimes see multiple CMakeLists in nested subdirectories but don't know how they would relate to my project. Would anyone who has worked on similarly scoped projects be able to weigh in and give me some pointers?
I should add that I hope to include Windows as a platform in the near future, and that things are currently running on Linux.
Note: This is my current CMakeLists.txt, I realise that boost isn't configured and that things aren't fully moved to the stage folder. I have been doing this manually, but I wanted to ask before I dig myself much deeper :)
Thanks!
CmakeList.txt
cmake_minimum_required(VERSION 2.6)
set(CMAKE_BUILD_TYPE Debug)
set(PROJ_NAME "mwave")
project(${PROJ_NAME})
include_directories("include")
include(ExternalProject)
# Add cmake dir to cmake module path so custom find modules will work
set(CMAKE_MODULE_PATH ${CMAKE_CURRENT_SOURCE_DIR}/cmake ${CMAKE_MODULE_PATH})
#Build Python via External Project
ExternalProject_Add(
Python
PREFIX ${CMAKE_CURRENT_BINARY_DIR}/external/python
URL ${CMAKE_CURRENT_SOURCE_DIR}/extern/Python-3.3.0.tar.bz2
URL_MD5 2dbff60afed2b5f66adf6f77dac9e139
UPDATE_COMMAND ""
CONFIGURE_COMMAND ./configure -q --prefix=${CMAKE_CURRENT_BINARY_DIR}/external/python --enable-shared
BUILD_COMMAND make
BUILD_IN_SOURCE 1
INSTALL_COMMAND make install
)
# Manually copy the compiled python files and dirs to our stage folder
add_custom_command(TARGET Python PRE_BUILD
COMMAND ${CMAKE_COMMAND} -E copy_directory
${CMAKE_CURRENT_BINARY_DIR}/external/python/lib/pkgconfig
${CMAKE_CURRENT_BINARY_DIR}/stage/lib/pkgconfig)
add_custom_command(TARGET Python PRE_BUILD
COMMAND ${CMAKE_COMMAND} -E copy_directory
${CMAKE_CURRENT_BINARY_DIR}/external/python/lib/python3.3
${CMAKE_CURRENT_BINARY_DIR}/stage/lib/python3.3)
add_custom_command(TARGET Python PRE_BUILD
COMMAND ${CMAKE_COMMAND} -E copy
${CMAKE_CURRENT_BINARY_DIR}/external/python/lib/libpython3.so
${CMAKE_CURRENT_BINARY_DIR}/stage/lib/libpython3.so)
add_custom_command(TARGET Python PRE_BUILD
COMMAND ${CMAKE_COMMAND} -E copy
${CMAKE_CURRENT_BINARY_DIR}/external/python/lib/libpython3.3m.so.1.0
${CMAKE_CURRENT_BINARY_DIR}/stage/lib/libpython3.3m.so.1.0)
add_custom_command(TARGET Python PRE_BUILD
COMMAND ${CMAKE_COMMAND} -E create_symlink
libpython3.3m.so.1.0
${CMAKE_CURRENT_BINARY_DIR}/stage/lib/libpython3.3m.so)
#Python
set(PYTHON_INCLUDE_DIRS "${CMAKE_CURRENT_BINARY_DIR}/external/python/include/python3.3m")
set(PYTHON_LIBRARIES "${CMAKE_CURRENT_BINARY_DIR}/external/python/lib/libpython3.3m.so" "pthread" "m" "util" "readline")
#Build boost via External Project
ExternalProject_Add(
Boost
DEPENDS Python
PREFIX ${CMAKE_CURRENT_BINARY_DIR}/external/boost
URL ${CMAKE_CURRENT_SOURCE_DIR}/extern/boost_1_51_0_mwave.tar.bz2
URL_MD5 fe203a243e451b4dd4754c7b283b1db9
UPDATE_COMMAND ./bootstrap.sh --with-libraries=python,system,thread,program_options
CONFIGURE_COMMAND ""
BUILD_COMMAND ./b2
BUILD_IN_SOURCE 1
INSTALL_COMMAND ""
)
#Boost (workaround until external project is working)
set(Boost_INCLUDE_DIRS "/opt/mwave/include")
set(Boost_LIBRARIES "/opt/mwave/lib/libboost_python3.so" "/opt/mwave/lib/libboost_program_options.so")
#OpenImageIO
set(OIIO_PATH "/opt/mwave/oiio/dist/linux64.debug")
find_package(OIIO REQUIRED)
#Qt4
find_package(Qt4 REQUIRED)
set(QT_USE_QTOPENGL TRUE)
include(${QT_USE_FILE})
add_definitions(${QT_DEFINITIONS})
#OpenGL
find_package(OpenGL REQUIRED)
find_package(GLEW REQUIRED)
# Mwave app
set(HEADERS
"include/Application.h"
"include/ImageChannel.h"
"include/CompDag.h"
"include/Dag.h"
"include/Gui/DagView.h"
"include/Gui/DagScene.h"
"include/Gui/MainWindow.h"
"include/Gui/GLViewer.h"
"include/Gui/Nodes/GNodeEdge.h"
"include/Gui/Nodes/GNodeLabel.h"
"include/Gui/Nodes/GNodeCacheStatus.h"
"include/Gui/Nodes/GNode.h"
"include/Gui/Nodes/GRead.h"
"include/Gui/Nodes/GViewer.h"
"include/MwaveException.h"
"include/Nodes/Node.h"
"include/Nodes/Read.h"
"include/Nodes/Viewer.h"
"include/mwave.h"
"include/main.h"
"include/shaders.h"
)
set(QOBJECT_HEADERS
"include/Gui/QCompDag.h"
"include/Gui/QPythonEditor.h"
"include/Gui/ViewerWidget.h"
)
set(SOURCES
"src/Application.cpp"
"src/CompDag.cpp"
"src/main.cpp"
"src/mwave.cpp"
"src/Dag.cpp"
"src/Gui/DagView.cpp"
"src/Gui/DagScene.cpp"
"src/Gui/MainWindow.cpp"
"src/Gui/QPythonEditor.cpp"
"src/Gui/GLViewer.cpp"
"src/Gui/ViewerWidget.cpp"
"src/Gui/Nodes/GNode.cpp"
"src/Gui/Nodes/GNodeEdge.cpp"
"src/Gui/QCompDag.cpp"
"src/Nodes/Node.cpp"
"src/Nodes/Read.cpp"
"src/Nodes/Viewer.cpp"
)
QT4_WRAP_CPP(HEADERS_MOC ${QOBJECT_HEADERS})
## Compiler flags
if(CMAKE_COMPILER_IS_GNUCXX)
set(CMAKE_CXX_FLAGS "-O2") ## Optimize
set(CMAKE_CXX_FLAGS "-O3") ## Optimize More
endif()
include_directories(${PYTHON_INCLUDE_DIRS}
${Boost_INCLUDE_DIRS}
${GLEW_INCLUDE_PATH}
${OPENGL_INCLUDE_DIR}
${OIIO_INCLUDE_DIR}
)
add_executable(mwave WIN32 ${HEADERS} ${HEADERS_MOC} ${SOURCES})
set_target_properties(mwave PROPERTIES OUTPUT_NAME mwave.bin)
target_link_libraries( mwave
${PYTHON_LIBRARIES}
${Boost_LIBRARIES}
${OIIO_LIBRARIES}
${GLEW_LIBRARY}
${OPENGL_LIBRARIES}
${QT_LIBRARIES})
cmake 2.6, which you are using, does not support ExternalProjects.
ExternalProjects are supported in cmake 2.8 series. Please move to cmake 2.8.
The below link clarifies
http://www.cmake.org/pipermail/cmake/2011-June/044993.html