影像拼接示例代码

project(Eigen) cmake_minimum_required(VERSION 2.8.2) # guard against in-source builds if(${CMAKE_SOURCE_DIR} STREQUAL ${CMAKE_BINARY_DIR}) message(FATAL_ERROR "In-source builds not allowed. Please make a new directory (called a build directory) and run CMake from there. You may need to remove CMakeCache.txt. ") endif() # guard against bad build-type strings if (NOT CMAKE_BUILD_TYPE) set(CMAKE_BUILD_TYPE "Release") endif() string(TOLOWER "${CMAKE_BUILD_TYPE}" cmake_build_type_tolower) if( NOT cmake_build_type_tolower STREQUAL "debug" AND NOT cmake_build_type_tolower STREQUAL "release" AND NOT cmake_build_type_tolower STREQUAL "relwithdebinfo") message(FATAL_ERROR "Unknown build type \"${CMAKE_BUILD_TYPE}\". Allowed values are Debug, Release, RelWithDebInfo (case-insensitive).") endif() ############################################################################# # retrieve version infomation # ############################################################################# # automatically parse the version number file(READ "${PROJECT_SOURCE_DIR}/Eigen/src/Core/util/Macros.h" _eigen_version_header) string(REGEX MATCH "define[ \t]+EIGEN_WORLD_VERSION[ \t]+([0-9]+)" _eigen_world_version_match "${_eigen_version_header}") set(EIGEN_WORLD_VERSION "${CMAKE_MATCH_1}") string(REGEX MATCH "define[ \t]+EIGEN_MAJOR_VERSION[ \t]+([0-9]+)" _eigen_major_version_match "${_eigen_version_header}") set(EIGEN_MAJOR_VERSION "${CMAKE_MATCH_1}") string(REGEX MATCH "define[ \t]+EIGEN_MINOR_VERSION[ \t]+([0-9]+)" _eigen_minor_version_match "${_eigen_version_header}") set(EIGEN_MINOR_VERSION "${CMAKE_MATCH_1}") set(EIGEN_VERSION_NUMBER ${EIGEN_WORLD_VERSION}.${EIGEN_MAJOR_VERSION}.${EIGEN_MINOR_VERSION}) # if the mercurial program is absent, this will leave the EIGEN_HG_CHANGESET string empty, # but won't stop CMake. execute_process(COMMAND hg tip -R ${CMAKE_SOURCE_DIR} OUTPUT_VARIABLE EIGEN_HGTIP_OUTPUT) execute_process(COMMAND hg branch -R ${CMAKE_SOURCE_DIR} OUTPUT_VARIABLE EIGEN_BRANCH_OUTPUT) # if this is the default (aka development) branch, extract the mercurial changeset number from the hg tip output... if(EIGEN_BRANCH_OUTPUT MATCHES "default") string(REGEX MATCH "^changeset: *[0-9]*:([0-9;a-f]+).*" EIGEN_HG_CHANGESET_MATCH "${EIGEN_HGTIP_OUTPUT}") set(EIGEN_HG_CHANGESET "${CMAKE_MATCH_1}") endif(EIGEN_BRANCH_OUTPUT MATCHES "default") #...and show it next to the version number if(EIGEN_HG_CHANGESET) set(EIGEN_VERSION "${EIGEN_VERSION_NUMBER} (mercurial changeset ${EIGEN_HG_CHANGESET})") else(EIGEN_HG_CHANGESET) set(EIGEN_VERSION "${EIGEN_VERSION_NUMBER}") endif(EIGEN_HG_CHANGESET) include(CheckCXXCompilerFlag) set(CMAKE_MODULE_PATH ${PROJECT_SOURCE_DIR}/cmake) ############################################################################# # find how to link to the standard libraries # ############################################################################# find_package(StandardMathLibrary) set(EIGEN_TEST_CUSTOM_LINKER_FLAGS "" CACHE STRING "Additional linker flags when linking unit tests.") set(EIGEN_TEST_CUSTOM_CXX_FLAGS "" CACHE STRING "Additional compiler flags when compiling unit tests.") set(EIGEN_STANDARD_LIBRARIES_TO_LINK_TO "") if(NOT STANDARD_MATH_LIBRARY_FOUND) message(FATAL_ERROR "Can't link to the standard math library. Please report to the Eigen developers, telling them about your platform.") else() if(EIGEN_STANDARD_LIBRARIES_TO_LINK_TO) set(EIGEN_STANDARD_LIBRARIES_TO_LINK_TO "${EIGEN_STANDARD_LIBRARIES_TO_LINK_TO} ${STANDARD_MATH_LIBRARY}") else() set(EIGEN_STANDARD_LIBRARIES_TO_LINK_TO "${STANDARD_MATH_LIBRARY}") endif() endif() if(EIGEN_STANDARD_LIBRARIES_TO_LINK_TO) message(STATUS "Standard libraries to link to explicitly: ${EIGEN_STANDARD_LIBRARIES_TO_LINK_TO}") else() message(STATUS "Standard libraries to link to explicitly: none") endif() option(EIGEN_BUILD_BTL "Build benchmark suite" OFF) if(NOT WIN32) option(EIGEN_BUILD_PKGCONFIG "Build pkg-config .pc file for Eigen" ON) endif(NOT WIN32) set(CMAKE_INCLUDE_CURRENT_DIR ON) option(EIGEN_SPLIT_LARGE_TESTS "Split large tests into smaller executables" ON) option(EIGEN_DEFAULT_TO_ROW_MAJOR "Use row-major as default matrix storage order" OFF) if(EIGEN_DEFAULT_TO_ROW_MAJOR) add_definitions("-DEIGEN_DEFAULT_TO_ROW_MAJOR") endif() set(EIGEN_TEST_MAX_SIZE "320" CACHE STRING "Maximal matrix/vector size, default is 320") macro(ei_add_cxx_compiler_flag FLAG) string(REGEX REPLACE "-" "" SFLAG ${FLAG}) check_cxx_compiler_flag(${FLAG} COMPILER_SUPPORT_${SFLAG}) if(COMPILER_SUPPORT_${SFLAG}) set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} ${FLAG}") endif() endmacro(ei_add_cxx_compiler_flag) if(NOT MSVC) # We assume that other compilers are partly compatible with GNUCC set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -fexceptions") set(CMAKE_CXX_FLAGS_DEBUG "-g3") set(CMAKE_CXX_FLAGS_RELEASE "-g0 -O2") # clang outputs some warnings for unknwon flags that are not caught by check_cxx_compiler_flag # adding -Werror turns such warnings into errors check_cxx_compiler_flag("-Werror" COMPILER_SUPPORT_WERROR) if(COMPILER_SUPPORT_WERROR) set(CMAKE_REQUIRED_FLAGS "-Werror") endif() ei_add_cxx_compiler_flag("-pedantic") ei_add_cxx_compiler_flag("-Wall") ei_add_cxx_compiler_flag("-Wextra") #ei_add_cxx_compiler_flag("-Weverything") # clang ei_add_cxx_compiler_flag("-Wundef") ei_add_cxx_compiler_flag("-Wcast-align") ei_add_cxx_compiler_flag("-Wchar-subscripts") ei_add_cxx_compiler_flag("-Wnon-virtual-dtor") ei_add_cxx_compiler_flag("-Wunused-local-typedefs") ei_add_cxx_compiler_flag("-Wpointer-arith") ei_add_cxx_compiler_flag("-Wwrite-strings") ei_add_cxx_compiler_flag("-Wformat-security") ei_add_cxx_compiler_flag("-Wno-psabi") ei_add_cxx_compiler_flag("-Wno-variadic-macros") ei_add_cxx_compiler_flag("-Wno-long-long") ei_add_cxx_compiler_flag("-fno-check-new") ei_add_cxx_compiler_flag("-fno-common") ei_add_cxx_compiler_flag("-fstrict-aliasing") ei_add_cxx_compiler_flag("-wd981") # disable ICC's "operands are evaluated in unspecified order" remark ei_add_cxx_compiler_flag("-wd2304") # disbale ICC's "warning #2304: non-explicit constructor with single argument may cause implicit type conversion" produced by -Wnon-virtual-dtor # The -ansi flag must be added last, otherwise it is also used as a linker flag by check_cxx_compiler_flag making it fails # Moreover we should not set both -strict-ansi and -ansi check_cxx_compiler_flag("-strict-ansi" COMPILER_SUPPORT_STRICTANSI) ei_add_cxx_compiler_flag("-Qunused-arguments") # disable clang warning: argument unused during compilation: '-ansi' if(COMPILER_SUPPORT_STRICTANSI) set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -strict-ansi") else() ei_add_cxx_compiler_flag("-ansi") endif() set(CMAKE_REQUIRED_FLAGS "") option(EIGEN_TEST_SSE2 "Enable/Disable SSE2 in tests/examples" OFF) if(EIGEN_TEST_SSE2) set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -msse2") message(STATUS "Enabling SSE2 in tests/examples") endif() option(EIGEN_TEST_SSE3 "Enable/Disable SSE3 in tests/examples" OFF) if(EIGEN_TEST_SSE3) set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -msse3") message(STATUS "Enabling SSE3 in tests/examples") endif() option(EIGEN_TEST_SSSE3 "Enable/Disable SSSE3 in tests/examples" OFF) if(EIGEN_TEST_SSSE3) set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -mssse3") message(STATUS "Enabling SSSE3 in tests/examples") endif() option(EIGEN_TEST_SSE4_1 "Enable/Disable SSE4.1 in tests/examples" OFF) if(EIGEN_TEST_SSE4_1) set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -msse4.1") message(STATUS "Enabling SSE4.1 in tests/examples") endif() option(EIGEN_TEST_SSE4_2 "Enable/Disable SSE4.2 in tests/examples" OFF) if(EIGEN_TEST_SSE4_2) set(CMAKE_CXX_FLAGS "${CMA