当使用g2o进行前段优化的时候发现make完成的g2o包无法找到,在CMakeLists.txt文件中也已经配置好了,却出现如下问题:
2018-05-10 17-33-19屏幕截图.png
显示无法定位g2o文件位置。
阅读了g2o中的readme文件又重新安装了一遍依赖项,发现还是无法定位。
再次看到上图的log信息发现,可能需要在camke_module文件夹中加入FindG2O文件来定位。
加入的文件内容如下:
# Find the header files
FIND_PATH(G2O_INCLUDE_DIR g2o/core/base_vertex.h
${G2O_ROOT}/include
$ENV{G2O_ROOT}/include
$ENV{G2O_ROOT}
/usr/local/include
/usr/include
/opt/local/include
/sw/local/include
/sw/include
NO_DEFAULT_PATH
)
# Macro to unify finding both the debug and release versions of the
# libraries; this is adapted from the OpenSceneGraph FIND_LIBRARY
# macro.
MACRO(FIND_G2O_LIBRARY MYLIBRARY MYLIBRARYNAME)
FIND_LIBRARY("${MYLIBRARY}_DEBUG"
NAMES "g2o_${MYLIBRARYNAME}_d"
PATHS
${G2O_ROOT}/lib/Debug
${G2O_ROOT}/lib
$ENV{G2O_ROOT}/lib/Debug
$ENV{G2O_ROOT}/lib
NO_DEFAULT_PATH
)
FIND_LIBRARY("${MYLIBRARY}_DEBUG"
NAMES "g2o_${MYLIBRARYNAME}_d"
PATHS
~/Library/Frameworks
/Library/Frameworks
/usr/local/lib
/usr/local/lib64
/usr/lib
/usr/lib64
/opt/local/lib
/sw/local/lib
/sw/lib
)
FIND_LIBRARY(${MYLIBRARY}
NAMES "g2o_${MYLIBRARYNAME}"
PATHS
${G2O_ROOT}/lib/Release
${G2O_ROOT}/lib
$ENV{G2O_ROOT}/lib/Release
$ENV{G2O_ROOT}/lib
NO_DEFAULT_PATH
)
FIND_LIBRARY(${MYLIBRARY}
NAMES "g2o_${MYLIBRARYNAME}"
PATHS
~/Library/Frameworks
/Library/Frameworks
/usr/local/lib
/usr/local/lib64
/usr/lib
/usr/lib64
/opt/local/lib
/sw/local/lib
/sw/lib
)
IF(NOT ${MYLIBRARY}_DEBUG)
IF(MYLIBRARY)
SET(${MYLIBRARY}_DEBUG ${MYLIBRARY})
ENDIF(MYLIBRARY)
ENDIF( NOT ${MYLIBRARY}_DEBUG)
ENDMACRO(FIND_G2O_LIBRARY LIBRARY LIBRARYNAME)
# Find the core elements
FIND_G2O_LIBRARY(G2O_STUFF_LIBRARY stuff)
FIND_G2O_LIBRARY(G2O_CORE_LIBRARY core)
# Find the CLI library
FIND_G2O_LIBRARY(G2O_CLI_LIBRARY cli)
# Find the pluggable solvers
FIND_G2O_LIBRARY(G2O_SOLVER_CHOLMOD solver_cholmod)
FIND_G2O_LIBRARY(G2O_SOLVER_CSPARSE solver_csparse)
FIND_G2O_LIBRARY(G2O_SOLVER_CSPARSE_EXTENSION csparse_extension)
FIND_G2O_LIBRARY(G2O_SOLVER_DENSE solver_dense)
FIND_G2O_LIBRARY(G2O_SOLVER_PCG solver_pcg)
FIND_G2O_LIBRARY(G2O_SOLVER_SLAM2D_LINEAR solver_slam2d_linear)
FIND_G2O_LIBRARY(G2O_SOLVER_STRUCTURE_ONLY solver_structure_only)
FIND_G2O_LIBRARY(G2O_SOLVER_EIGEN solver_eigen)
# Find the predefined types
FIND_G2O_LIBRARY(G2O_TYPES_DATA types_data)
FIND_G2O_LIBRARY(G2O_TYPES_ICP types_icp)
FIND_G2O_LIBRARY(G2O_TYPES_SBA types_sba)
FIND_G2O_LIBRARY(G2O_TYPES_SCLAM2D types_sclam2d)
FIND_G2O_LIBRARY(G2O_TYPES_SIM3 types_sim3)
FIND_G2O_LIBRARY(G2O_TYPES_SLAM2D types_slam2d)
FIND_G2O_LIBRARY(G2O_TYPES_SLAM3D types_slam3d)
# G2O solvers declared found if we found at least one solver
SET(G2O_SOLVERS_FOUND "NO")
IF(G2O_SOLVER_CHOLMOD OR G2O_SOLVER_CSPARSE OR G2O_SOLVER_DENSE OR G2O_SOLVER_PCG OR G2O_SOLVER_SLAM2D_LINEAR OR G2O_SOLVER_STRUCTURE_ONLY OR G2O_SOLVER_EIGEN)
SET(G2O_SOLVERS_FOUND "YES")
ENDIF(G2O_SOLVER_CHOLMOD OR G2O_SOLVER_CSPARSE OR G2O_SOLVER_DENSE OR G2O_SOLVER_PCG OR G2O_SOLVER_SLAM2D_LINEAR OR G2O_SOLVER_STRUCTURE_ONLY OR G2O_SOLVER_EIGEN)
# G2O itself declared found if we found the core libraries and at least one solver
SET(G2O_FOUND "NO")
IF(G2O_STUFF_LIBRARY AND G2O_CORE_LIBRARY AND G2O_INCLUDE_DIR AND G2O_SOLVERS_FOUND)
SET(G2O_FOUND "YES")
ENDIF(G2O_STUFF_LIBRARY AND G2O_CORE_LIBRARY AND G2O_INCLUDE_DIR AND G2O_SOLVERS_FOUND)
保存好再编译发现可以正常编译了。
翻书回去查看,发现该cmake_module文件夹就是给g2o库准备的,用于放置第三方的库文件。
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