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#
# cmake package for meson support
#
# SPDX-FileCopyrightText: © 2023 Ralf Habacker
# SPDX-License-Identifier: BSD-3-Clause
#
# load meson build file into an internal list named _meson_build
#
macro(meson_init config)
set(_meson_build_name ${config})
file(READ ${config} _meson_build_raw)
# Convert file contents into a CMake list (where each element in the list
# is one line of the file)
string(REGEX REPLACE ";" "\\\\;" _meson_build "${_meson_build_raw}")
string(REGEX REPLACE "\n" ";" _meson_build "${_meson_build}")
endmacro()
# extracts version information from autoconf config file
# and set related cmake variables
#
# returns
# ${prefix}_VERSION
# ${prefix}_VERSION_STRING
# ${prefix}_MAJOR_VERSION
# ${prefix}_MINOR_VERSION
# ${prefix}_MICRO_VERSION
# ${prefix}_LIBRARY_AGE
# ${prefix}_LIBRARY_REVISION
# ${prefix}_LIBRARY_CURRENT
#
macro(meson_version prefix)
set(WS "[ \t\r\n]")
string(TOUPPER ${prefix} prefix_upper)
string(REGEX REPLACE ".*${WS}version:${WS}*'([0-9.]+)'.*" "\\1" ${prefix_upper}_VERSION ${_meson_build_raw})
string(REPLACE "." ";" VERSION_LIST ${${prefix_upper}_VERSION})
list(GET VERSION_LIST 0 ${prefix_upper}_MAJOR_VERSION)
list(GET VERSION_LIST 1 ${prefix_upper}_MINOR_VERSION)
list(GET VERSION_LIST 2 ${prefix_upper}_MICRO_VERSION)
set(${prefix_upper}_VERSION_STRING "${${prefix_upper}_VERSION}")
string(REGEX REPLACE ".*${WS}lt_age${WS}*=${WS}*([0-9]+).*" "\\1" ${prefix_upper}_LIBRARY_AGE ${_meson_build_raw})
string(REGEX REPLACE ".*${WS}lt_current${WS}*=*${WS}*([0-9]+).*" "\\1" ${prefix_upper}_LIBRARY_CURRENT ${_meson_build_raw})
string(REGEX REPLACE ".*${WS}lt_revision${WS}*=${WS}*([0-9]+).*" "\\1" ${prefix_upper}_LIBRARY_REVISION ${_meson_build_raw})
message(STATUS "fetched variable from meson.build - ${prefix_upper}_VERSION = ${${prefix_upper}_VERSION} ")
message(STATUS "fetched variable from meson.build - ${prefix_upper}_VERSION_STRING = ${${prefix_upper}_VERSION_STRING} ")
message(STATUS "fetched variable from meson.build - ${prefix_upper}_MAJOR_VERSION = ${${prefix_upper}_MAJOR_VERSION} ")
message(STATUS "fetched variable from meson.build - ${prefix_upper}_MINOR_VERSION = ${${prefix_upper}_MINOR_VERSION} ")
message(STATUS "fetched variable from meson.build - ${prefix_upper}_MICRO_VERSION = ${${prefix_upper}_MICRO_VERSION} ")
message(STATUS "fetched variable from meson.build - ${prefix_upper}_LIBRARY_AGE = ${${prefix_upper}_LIBRARY_AGE} ")
message(STATUS "fetched variable from meson.build - ${prefix_upper}_LIBRARY_REVISION = ${${prefix_upper}_LIBRARY_REVISION}")
message(STATUS "fetched variable from meson.build - ${prefix_upper}_LIBRARY_CURRENT = ${${prefix_upper}_LIBRARY_CURRENT} ")
endmacro()
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