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FindArmadillo: Add support for non-wrapper case

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Armadillo is typically built as a wrapper library, which is what this
find module has historically supported, but it does not have to be.
If not, then instead of armadillo itself, we need to link to some
combination of dependencies and not armadillo.
This commit is contained in:
Ryan Birmingham 2020-03-02 21:40:24 -05:00 committed by Brad King
parent 6e9eaca24f
commit 38c6dd7b19
1 changed files with 62 additions and 21 deletions
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83
Modules/FindArmadillo.cmake
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@ -6,7 +6,7 @@ FindArmadillo
-------------
Find the Armadillo C++ library.
Armadillo is library for linear algebra & scientific computing.
Armadillo is a library for linear algebra & scientific computing.
Using Armadillo:
@ -31,19 +31,13 @@ This module sets the following variables:
ARMADILLO_VERSION_NAME - name of the version (ex: "Antipodean Antileech")
#]=======================================================================]
# UNIX paths are standard, no need to write.
find_library(ARMADILLO_LIBRARY
NAMES armadillo
PATHS "$ENV{ProgramFiles}/Armadillo/lib" "$ENV{ProgramFiles}/Armadillo/lib64" "$ENV{ProgramFiles}/Armadillo"
)
find_path(ARMADILLO_INCLUDE_DIR
NAMES armadillo
PATHS "$ENV{ProgramFiles}/Armadillo/include"
)
mark_as_advanced(ARMADILLO_INCLUDE_DIR)
if(ARMADILLO_INCLUDE_DIR)
# ------------------------------------------------------------------------
# Extract version information from <armadillo>
# ------------------------------------------------------------------------
@ -59,32 +53,79 @@ if(ARMADILLO_INCLUDE_DIR)
if(EXISTS "${ARMADILLO_INCLUDE_DIR}/armadillo_bits/arma_version.hpp")
# Read and parse armdillo version header file for version number
file(STRINGS "${ARMADILLO_INCLUDE_DIR}/armadillo_bits/arma_version.hpp" _armadillo_HEADER_CONTENTS REGEX "#define ARMA_VERSION_[A-Z]+ ")
string(REGEX REPLACE ".*#define ARMA_VERSION_MAJOR ([0-9]+).*" "\\1" ARMADILLO_VERSION_MAJOR "${_armadillo_HEADER_CONTENTS}")
string(REGEX REPLACE ".*#define ARMA_VERSION_MINOR ([0-9]+).*" "\\1" ARMADILLO_VERSION_MINOR "${_armadillo_HEADER_CONTENTS}")
string(REGEX REPLACE ".*#define ARMA_VERSION_PATCH ([0-9]+).*" "\\1" ARMADILLO_VERSION_PATCH "${_armadillo_HEADER_CONTENTS}")
file(STRINGS "${ARMADILLO_INCLUDE_DIR}/armadillo_bits/arma_version.hpp" _ARMA_HEADER_CONTENTS REGEX "#define ARMA_VERSION_[A-Z]+ ")
string(REGEX REPLACE ".*#define ARMA_VERSION_MAJOR ([0-9]+).*" "\\1" ARMADILLO_VERSION_MAJOR "${_ARMA_HEADER_CONTENTS}")
string(REGEX REPLACE ".*#define ARMA_VERSION_MINOR ([0-9]+).*" "\\1" ARMADILLO_VERSION_MINOR "${_ARMA_HEADER_CONTENTS}")
string(REGEX REPLACE ".*#define ARMA_VERSION_PATCH ([0-9]+).*" "\\1" ARMADILLO_VERSION_PATCH "${_ARMA_HEADER_CONTENTS}")
# WARNING: The number of spaces before the version name is not one.
string(REGEX REPLACE ".*#define ARMA_VERSION_NAME +\"([0-9a-zA-Z _-]+)\".*" "\\1" ARMADILLO_VERSION_NAME "${_armadillo_HEADER_CONTENTS}")
string(REGEX REPLACE ".*#define ARMA_VERSION_NAME\ +\"([0-9a-zA-Z\ _-]+)\".*" "\\1" ARMADILLO_VERSION_NAME "${_ARMA_HEADER_CONTENTS}")
unset(_armadillo_HEADER_CONTENTS)
endif()
set(ARMADILLO_VERSION_STRING "${ARMADILLO_VERSION_MAJOR}.${ARMADILLO_VERSION_MINOR}.${ARMADILLO_VERSION_PATCH}")
endif ()
if(EXISTS "${ARMADILLO_INCLUDE_DIR}/armadillo_bits/config.hpp")
file(STRINGS "${ARMADILLO_INCLUDE_DIR}/armadillo_bits/config.hpp" _ARMA_CONFIG_CONTENTS REGEX "^#define ARMA_USE_[A-Z]+")
string(REGEX MATCH "ARMA_USE_WRAPPER" _ARMA_USE_WRAPPER "${_ARMA_CONFIG_CONTENTS}")
string(REGEX MATCH "ARMA_USE_LAPACK" _ARMA_USE_LAPACK "${_ARMA_CONFIG_CONTENTS}")
string(REGEX MATCH "ARMA_USE_BLAS" _ARMA_USE_BLAS "${_ARMA_CONFIG_CONTENTS}")
string(REGEX MATCH "ARMA_USE_ARPACK" _ARMA_USE_ARPACK "${_ARMA_CONFIG_CONTENTS}")
string(REGEX MATCH "ARMA_USE_HDF5" _ARMA_USE_HDF5 "${_ARMA_CONFIG_CONTENTS}")
endif()
include(${CMAKE_CURRENT_LIST_DIR}/FindPackageHandleStandardArgs.cmake)
# If _ARMA_USE_WRAPPER is set, then we just link to armadillo, but if it's not then we need support libraries instead
set(_ARMA_SUPPORT_LIBRARIES)
if(_ARMA_USE_WRAPPER)
# Link to the armadillo wrapper library.
find_library(ARMADILLO_LIBRARY
NAMES armadillo
PATHS
"$ENV{ProgramFiles}/Armadillo/lib"
"$ENV{ProgramFiles}/Armadillo/lib64"
"$ENV{ProgramFiles}/Armadillo"
)
mark_as_advanced(ARMADILLO_LIBRARY)
set(_ARMA_REQUIRED_VARS ARMADILLO_LIBRARY)
else()
# Link directly to individual components.
set(ARMADILLO_LIBRARY "")
foreach(pkg
LAPACK
BLAS
ARPACK
HDF5
)
if(_ARMA_USE_${pkg})
find_package(${pkg} QUIET)
list(APPEND _ARMA_REQUIRED_VARS "${pkg}_FOUND")
if(${pkg}_FOUND)
list(APPEND _ARMA_SUPPORT_LIBRARIES ${${pkg}_LIBRARIES})
endif()
endif()
endforeach()
endif()
find_package_handle_standard_args(Armadillo
REQUIRED_VARS ARMADILLO_LIBRARY ARMADILLO_INCLUDE_DIR
REQUIRED_VARS ARMADILLO_INCLUDE_DIR ${_ARMA_REQUIRED_VARS}
VERSION_VAR ARMADILLO_VERSION_STRING)
# version_var fails with cmake < 2.8.4.
if (ARMADILLO_FOUND)
set(ARMADILLO_INCLUDE_DIRS ${ARMADILLO_INCLUDE_DIR})
set(ARMADILLO_LIBRARIES ${ARMADILLO_LIBRARY})
set(ARMADILLO_LIBRARIES ${ARMADILLO_LIBRARY} ${_ARMA_SUPPORT_LIBRARIES})
endif ()
# Hide internal variables
mark_as_advanced(
ARMADILLO_INCLUDE_DIR
ARMADILLO_LIBRARY)
# Clean up internal variables
unset(_ARMA_REQUIRED_VARS)
unset(_ARMA_SUPPORT_LIBRARIES)
unset(_ARMA_USE_WRAPPER)
unset(_ARMA_USE_LAPACK)
unset(_ARMA_USE_BLAS)
unset(_ARMA_USE_ARPACK)
unset(_ARMA_USE_HDF5)
unset(_ARMA_CONFIG_CONTENTS)
unset(_ARMA_HEADER_CONTENTS)