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Allow user to specify path to Eigen3 library

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By setting EIGEN3_ROOT, we can point directly to the path of the
library checkout we want to use. No other searching will then take
place.

Notice that if you have found an Eigen3 installation in a previous
configure, it will not find a new version even if you introduce the
EIGEN3_ROOT variable!
This commit is contained in:
Roland Kaufmann 2013-06-25 14:30:24 +02:00
parent 82c217d0e3
commit b446ac99e2
1 changed files with 12 additions and 1 deletions
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13
cmake/Modules/FindEigen3.cmake
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@ -61,12 +61,23 @@ if (EIGEN3_INCLUDE_DIR)
else (EIGEN3_INCLUDE_DIR)
find_path(EIGEN3_INCLUDE_DIR NAMES signature_of_eigen3_matrix_library
# if the _ROOT is specified, then look *only* there; don't allow any
# other version to be swapped in to substitute; if not specified, then
# go search usual locations
if (EIGEN3_ROOT)
find_path (EIGEN3_INCLUDE_DIR
NAMES signature_of_eigen3_matrix_library
PATHS ${EIGEN3_ROOT}
NO_DEFAULT_PATH
)
else (EIGEN3_ROOT)
find_path(EIGEN3_INCLUDE_DIR NAMES signature_of_eigen3_matrix_library
PATHS
${CMAKE_INSTALL_PREFIX}/include
${KDE4_INCLUDE_DIR}
PATH_SUFFIXES eigen3 eigen
)
endif (EIGEN3_ROOT)
if(EIGEN3_INCLUDE_DIR)
_eigen3_check_version()