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Use system eigen3 only if first quietly found.

release/4.3a0
Jose Luis Blanco Claraco 2020-10-06 22:58:42 +02:00
parent 8b2b7476e1
commit b1c2e0174b
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1 changed files with 16 additions and 0 deletions
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16
cmake/handle_eigen.cmake
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@ -1,6 +1,22 @@
###############################################################################
# Option for using system Eigen or GTSAM-bundled Eigen
# Default: Use system Eigen if it's present:
find_package(Eigen3 QUIET)
if (Eigen3_FOUND)
set(SYS_EIGEN3_DEFAULT_ ON)
else()
set(SYS_EIGEN3_DEFAULT_ OFF)
endif()
option(GTSAM_USE_SYSTEM_EIGEN "Find and use system-installed Eigen. If 'off', use the one bundled with GTSAM" ${SYS_EIGEN3_DEFAULT_})
unset(SYS_EIGEN3_DEFAULT_)
if(NOT GTSAM_USE_SYSTEM_EIGEN)
# This option only makes sense if using the embedded copy of Eigen, it is
# used to decide whether to *install* the "unsupported" module:
option(GTSAM_WITH_EIGEN_UNSUPPORTED "Install Eigen's unsupported modules" OFF)
endif()
# Switch for using system Eigen or GTSAM-bundled Eigen
if(GTSAM_USE_SYSTEM_EIGEN)
find_package(Eigen3 REQUIRED)