# - Find Ensmallen

# Find the Ensmallen C++ library

#

# This module sets the following variables:

# ENSMALLEN_FOUND - set to true if the library is found

# ENSMALLEN_INCLUDE_DIR - list of required include directories

# ENSMALLEN_VERSION_MAJOR - major version number

# ENSMALLEN_VERSION_MINOR - minor version number

# ENSMALLEN_VERSION_PATCH - patch version number

# ENSMALLEN_VERSION_STRING - version number as a string (ex: "1.0.4")

# ENSMALLEN_VERSION_NAME - name of the version (ex: "Antipodean Antileech")

file(GLOB ENSMALLEN_SEARCH_PATHS

${CMAKE_BINARY_DIR}/deps/ensmallen-[0-9]*.[0-9]*.[0-9]*)

find_path(ENSMALLEN_INCLUDE_DIR

NAMES ensmallen.hpp

PATHS ${ENSMALLEN_SEARCH_PATHS}/include)

if(ENSMALLEN_INCLUDE_DIR)

# ------------------------------------------------------------------------

# Extract version information from <ensmallen>

# ------------------------------------------------------------------------

set(ENSMALLEN_VERSION_MAJOR 0)

set(ENSMALLEN_VERSION_MINOR 0)

set(ENSMALLEN_VERSION_PATCH 0)

set(ENSMALLEN_VERSION_NAME "unknown")

if(EXISTS "${ENSMALLEN_INCLUDE_DIR}/ensmallen_bits/ens_version.hpp")

set(ENSMALLEN_FOUND YES)

# Read and parse armdillo version header file for version number

file(READ "${ENSMALLEN_INCLUDE_DIR}/ensmallen_bits/ens_version.hpp"

_ensmallen_HEADER_CONTENTS)

string(REGEX REPLACE ".*#define ENS_VERSION_MAJOR ([0-9]+).*" "\\1"

ENSMALLEN_VERSION_MAJOR "${_ensmallen_HEADER_CONTENTS}")

string(REGEX REPLACE ".*#define ENS_VERSION_MINOR ([0-9]+).*" "\\1"

ENSMALLEN_VERSION_MINOR "${_ensmallen_HEADER_CONTENTS}")

string(REGEX REPLACE ".*#define ENS_VERSION_PATCH ([0-9]+).*" "\\1"

ENSMALLEN_VERSION_PATCH "${_ensmallen_HEADER_CONTENTS}")

# WARNING: The number of spaces before the version name is not one.

string(REGEX REPLACE

".*#define ENS_VERSION_NAME\ +\"([0-9a-zA-Z\ _-]+)\".*" "\\1"

ENSMALLEN_VERSION_NAME "${_ensmallen_HEADER_CONTENTS}")

endif()

set(ENSMALLEN_VERSION_STRING "${ENSMALLEN_VERSION_MAJOR}.${ENSMALLEN_VERSION_MINOR}.${ENSMALLEN_VERSION_PATCH}")

endif ()

# Checks 'REQUIRED', 'QUIET' and versions.

include(FindPackageHandleStandardArgs)

find_package_handle_standard_args(ensmallen

REQUIRED_VARS ENSMALLEN_INCLUDE_DIR

VERSION_VAR ENSMALLEN_VERSION_STRING)

mark_as_advanced(ENSMALLEN_INCLUDE_DIR)