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#
# Copyright 2014 Ettus Research LLC
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
#
########################################################################
# When "find_package" is provided with UHD and a version, this file is
# called to try to determine if the requested version matches that
# provided by this UHD install. All version checking is done herein.
########################################################################
# set that this file was found, for use in GNU Radio's FindUHD.cmake.
# Have to use the ENV, since this file might not allow CACHE changes.
set(ENV{UHD_CONFIG_VERSION_USED} TRUE)
# version values as set in cmake/Modules/UHDVersion.cmake, placed
# statically in here to avoid using Python all over again.
SET(MAJOR_VERSION @TRIMMED_VERSION_MAJOR@)
SET(MINOR_VERSION @TRIMMED_VERSION_MINOR@)
SET(PATCH_VERSION @TRIMMED_VERSION_PATCH@)
SET(PACKAGE_VERSION @TRIMMED_UHD_VERSION@)
SET(ENV{UHD_PACKAGE_VERSION} ${PACKAGE_VERSION})
# There is a bug in CMake whereby calling "find_package(FOO)" within
# "find_package(FOO)" results in the version being checked in the
# second version no matter if it was set. To get around this, check
# "PACKAGE_FIND_VERSION" and if empty set return variables to TRUE to
# make CMake happy. Not the best solution, but it does the trick.
IF(NOT PACKAGE_FIND_VERSION)
SET(PACKAGE_VERSION_COMPATIBLE TRUE)
SET(PACKAGE_VERSION_EXACT TRUE)
RETURN()
ENDIF(NOT PACKAGE_FIND_VERSION)
# assume incorrect versioning by default
SET(PACKAGE_VERSION_COMPATIBLE FALSE)
SET(PACKAGE_VERSION_EXACT FALSE)
# do not use ABI for now
SET(UHD_USE_ABI FALSE)
# leave the ABI checking in, for now, just in case it is wanted in the
# future. This code works nicely to find the ABI compatibility
# version from <uhd/version.hpp>.
IF(UHD_USE_ABI)
# find ABI compatible version from <uhd/version.hpp>
SET(UHD_INCLUDE_HINTS)
SET(UHD_DIR $ENV{UHD_DIR})
IF(UHD_DIR)
LIST(APPEND UHD_INCLUDE_HINTS ${UHD_DIR}/include)
ENDIF()
INCLUDE(FindPkgConfig)
IF(PKG_CONFIG_FOUND)
IF(NOT ${CMAKE_VERSION} VERSION_LESS "2.8.0")
SET(UHD_QUIET "QUIET")
ENDIF()
IF(PACKAGE_VERSION_EXACT)
PKG_CHECK_MODULES(PC_UHD ${UHD_QUIET} uhd=${UHD_FIND_VERSION})
ELSE()
PKG_CHECK_MODULES(PC_UHD ${UHD_QUIET} uhd>=${UHD_FIND_VERSION})
ENDIF()
IF(PC_UHD_FOUND)
LIST(APPEND UHD_INCLUDE_HINTS ${PC_UHD_INCLUDEDIR})
ENDIF()
ENDIF()
LIST(APPEND UHD_INCLUDE_HINTS ${CMAKE_INSTALL_PREFIX}/include)
# Verify that <uhd/config.hpp> and libuhd are available, and, if a
# version is provided, that UHD meets the version requirements -- no
# matter what pkg-config might think.
FIND_PATH(
UHD_INCLUDE_DIR
NAMES uhd/version.hpp
HINTS ${UHD_INCLUDE_HINTS}
PATHS /usr/local/include
/usr/include
)
IF(UHD_INCLUDE_DIR)
# extract the UHD API version from the installed header
FILE(STRINGS "${UHD_INCLUDE_DIR}/uhd/version.hpp"
UHD_STRING_VERSION REGEX "UHD_VERSION_ABI_STRING")
STRING(REGEX MATCH "[0-9]+\\.[0-9]+\\.[0-9]+"
UHD_ABI_VERSION_CONCISE ${UHD_STRING_VERSION})
# convert UHD_FIND_VERSION into concise #.#.# format for comparison
STRING(REGEX REPLACE "([^\\.]*)\\.([^\\.]*)\\.([^\\.]*)"
"\\1.\\2.\\3" UHD_ABI_VERSION_TMP ${UHD_ABI_VERSION_CONCISE})
STRING(REPLACE "0" "" UHD_ABI_MAJOR ${CMAKE_MATCH_1})
STRING(REPLACE "0" "" UHD_ABI_MINOR ${CMAKE_MATCH_2})
STRING(REPLACE "0" "" UHD_ABI_PATCH ${CMAKE_MATCH_3})
# fix the case where the version number is "000"
IF(NOT UHD_ABI_MAJOR)
SET(UHD_ABI_MAJOR "0")
ENDIF()
IF(NOT UHD_ABI_MINOR)
SET(UHD_ABI_MINOR "0")
ENDIF()
IF(NOT UHD_ABI_PATCH)
SET(UHD_ABI_PATCH "0")
ENDIF()
SET(UHD_ABI_VERSION_CONCISE ${UHD_ABI_MAJOR}.${UHD_ABI_MINOR}.${UHD_ABI_PATCH})
ELSE(UHD_INCLUDE_DIR)
# no header found ... not a good sign! Assume ABI version is the
# same as that known internally here. Let UHDConfig.cmake fail if
# it cannot find <uhd/config.hpp> or "libuhd" ...
SET(UHD_ABI_VERSION_CONCISE ${PACKAGE_VERSION})
ENDIF(UHD_INCLUDE_DIR)
# check for ABI compatibility, both:
# ACTUAL VERSION >= DESIRED VERSION >= ABI VERSION
IF(NOT ${PACKAGE_FIND_VERSION} VERSION_LESS ${UHD_ABI_VERSION_CONCISE} AND
NOT ${PACKAGE_FIND_VERSION} VERSION_GREATER ${PACKAGE_VERSION})
SET(PACKAGE_VERSION_COMPATIBLE TRUE)
ENDIF()
ELSE(UHD_USE_ABI)
# use API only, and assume compatible of requested <= actual
# which is the same as "not >"
IF(NOT ${PACKAGE_FIND_VERSION} VERSION_GREATER ${PACKAGE_VERSION})
SET(PACKAGE_VERSION_COMPATIBLE TRUE)
ENDIF()
ENDIF(UHD_USE_ABI)
# check for exact version
IF(${PACKAGE_FIND_VERSION} VERSION_EQUAL ${PACKAGE_VERSION})
SET(PACKAGE_VERSION_EXACT TRUE)
ENDIF()
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