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# ===================================================================
# Licensed to the Apache Software Foundation (ASF) under one
# or more contributor license agreements. See the NOTICE file
# distributed with this work for additional information
# regarding copyright ownership. The ASF licenses this file
# to you under the Apache License, Version 2.0 (the
# "License"); you may not use this file except in compliance
# with the License. You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing,
# software distributed under the License is distributed on an
# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
# KIND, either express or implied. See the License for the
# specific language governing permissions and limitations
# under the License.
# ===================================================================
cmake_minimum_required(VERSION 3.0)
#.rst:
# FindAPR
# --------
#
# Find the native Apache Portable Runtime includes and library.
#
# IMPORTED Targets
# ^^^^^^^^^^^^^^^^
#
# This module defines :prop_tgt:`IMPORTED` target ``APR::APR``, if
# APR has been found. On Windows, it may define the :prop_tgt:`IMPORTED`
# target ``APR::APR_static`` if the static libraries are found.
#
# Result Variables
# ^^^^^^^^^^^^^^^^
#
# This module defines the following variables:
#
# ::
#
# APR_FOUND - True if APR was found.
# APR_VERSION - The version of APR found (x.y.z)
# APR_CONTAINS_APRUTIL - True if the APR major version is 2 or greater.
# APR_INCLUDES - Where to find apr.h, etc.
# APR_LIBRARIES - Linker switches to use with ld to link against APR
#
# ::
#
# APR_EXTRALIBS - Additional libraries to link against
# APR_CFLAGS - The flags to use to compile.
# APR_STATIC_LIBS - On Windows: list of APR static libraries
# APR_RUNTIME_LIBS - On Windows: list of APR runtime DLLs
#
# Hints
# ^^^^^
#
# A user may set ``APR_ROOT`` to an APR installation root to tell this
# module where to look. This variable must be defined on Windows.
# -------------------------------------------------------------------
# Common utility functions for FindAPR.cmaks and FindAPRtil.cmake
# -------------------------------------------------------------------
# Run the APR/Util configuration program
function(_apru_config _program _varname _regexp)
execute_process(COMMAND ${_program} ${ARGN}
OUTPUT_VARIABLE _apru_output
RESULT_VARIABLE _apru_failed)
if(_apru_failed)
message(FATAL_ERROR "${_program} ${ARGN} failed")
else()
# Join multi-line outupt
string(REGEX REPLACE "[\r\n]" "" _apru_output "${_apru_output}")
# Optionally apply the regular expression filter
if(NOT ${_regexp} STREQUAL "")
string(REGEX REPLACE "${_regexp}" " " _apru_output "${_apru_output}")
endif()
# Remove leading and trailing spaces
string(REGEX REPLACE "^ +" "" _apru_output "${_apru_output}")
string(REGEX REPLACE " +$" "" _apru_output "${_apru_output}")
separate_arguments(_apru_output)
set(${_varname} ${_apru_output} PARENT_SCOPE)
endif()
endfunction(_apru_config)
# Parse the APR/Util version number from the header
function(_apru_version _version_varname _major_varname _minor_varname _header _prefix)
file(STRINGS ${_header} _apru_major
REGEX "^ *# *define +${_prefix}_MAJOR_VERSION +[0-9]+.*$")
file(STRINGS ${_header} _apru_minor
REGEX "^ *# *define +${_prefix}_MINOR_VERSION +[0-9]+.*$")
file(STRINGS ${_header} _apru_patch
REGEX "^ *# *define +${_prefix}_PATCH_VERSION +[0-9]+.*$")
string(REGEX REPLACE "^[^0-9]+([0-9]+).*$" "\\1" _apru_major ${_apru_major})
string(REGEX REPLACE "^[^0-9]+([0-9]+).*$" "\\1" _apru_minor ${_apru_minor})
string(REGEX REPLACE "^[^0-9]+([0-9]+).*$" "\\1" _apru_patch ${_apru_patch})
set(${_version_varname} "${_apru_major}.${_apru_minor}.${_apru_patch}" PARENT_SCOPE)
set(${_major_varname} ${_apru_major} PARENT_SCOPE)
set(${_minor_varname} ${_apru_minor} PARENT_SCOPE)
endfunction(_apru_version)
# Windows: Find the DLL (runtime) library
function(_apru_find_dll _varname _dllname)
set(CMAKE_FIND_LIBRARY_SUFFIXES ".dll")
find_library(${_varname} NAMES ${_dllname}
PATHS ${ARGN} NO_DEFAULT_PATH PATH_SUFFIXES "bin" "lib")
endfunction(_apru_find_dll)
# Extract the main and extra static libraries
function(_apru_extras _static_var _extra_var)
# The first element in the list of static libraries will be the the main
# APR/Util static library, anything else will be additional interface
# libraries.
set(_extra "${ARGN}")
list(GET _extra 0 _static)
list(REMOVE_AT _extra 0)
set(${_static_var} ${_static} PARENT_SCOPE)
set(${_extra_var} ${_extra} PARENT_SCOPE)
endfunction(_apru_extras)
# From the list of link libraries, extract the imported location
function(_apru_location _location_var _extralibs_var)
unset(_dir)
unset(_lib)
unset(_extra)
foreach(_part ${ARGN})
string(SUBSTRING "${_part}" 0 2 _flag)
if(_flag STREQUAL "-L")
if(NOT _dir AND NOT _lib)
string(SUBSTRING "${_part}" 2 -1 _rest)
set(_dir "${_rest}")
else()
list(APPEND _extra "${_part}")
endif()
elseif(_flag STREQUAL "-l")
if(NOT _lib)
string(SUBSTRING "${_part}" 2 -1 _rest)
set(_lib "${_rest}")
else()
list(APPEND _extra " ${_part}")
endif()
else()
if(NOT _lib)
set(_lib "${_rest}")
else()
list(APPEND _extra " ${_part}")
endif()
endif()
endforeach()
if(NOT _lib)
message(FATAL_ERROR "did not find any libraries in '${ARGN}'")
endif()
if(NOT _dir)
find_library(${_location_var} NAMES "${_lib}")
else()
find_library(${_location_var} NAMES "${_lib}" PATHS "${_dir}" NO_DEFAULT_PATH)
endif()
set(${_extralibs_var} ${_extra} PARENT_SCOPE)
endfunction(_apru_location)
# -------------------------------------------------------------------
if(NOT _apru_include_only_utilities)
set(APR_FOUND FALSE)
if(${CMAKE_SYSTEM_NAME} MATCHES "Windows")
if(DEFINED APR_ROOT)
get_filename_component(APR_ROOT "${APR_ROOT}" REALPATH)
else()
message(FATAL_ERROR "APR_ROOT must be defined on Windows")
endif()
include(CheckIncludeFile)
set(APR_INCLUDES "${APR_ROOT}/include")
if(NOT EXISTS "${APR_INCLUDES}/apr.h")
message(FATAL_ERROR "apr.h was not found in ${APR_INCLUDES}")
endif()
if(NOT EXISTS "${APR_INCLUDES}/apr_version.h")
message(FATAL_ERROR "apr_version.h was not found in ${APR_INCLUDES}")
endif()
_apru_version(APR_VERSION _apr_major _apr_minor "${APR_INCLUDES}/apr_version.h" "APR")
set(_apr_name "apr-${_apr_major}")
find_library(APR_LIBRARIES NAMES "lib${_apr_name}.lib"
PATHS ${APR_ROOT} NO_DEFAULT_PATH PATH_SUFFIXES "lib")
find_library(APR_STATIC_LIBS NAMES "${_apr_name}.lib"
PATHS ${APR_ROOT} NO_DEFAULT_PATH PATH_SUFFIXES "lib")
_apru_find_dll(APR_RUNTIME_LIBS "lib${_apr_name}.dll" ${APR_ROOT})
else() # NOT Windows
if(DEFINED APR_ROOT)
get_filename_component(APR_ROOT "${APR_ROOT}" REALPATH)
find_program(APR_CONFIG_EXECUTABLE NAMES apr-2-config apr-1-config
PATHS "${APR_ROOT}/bin" NO_DEFAULT_PATH)
else()
find_program(APR_CONFIG_EXECUTABLE NAMES apr-2-config apr-1-config)
endif()
mark_as_advanced(APR_CONFIG_EXECUTABLE)
macro(_apr_invoke _varname _regexp)
_apru_config(${APR_CONFIG_EXECUTABLE} ${_varname} "${_regexp}" "${ARGN}")
endmacro(_apr_invoke)
_apr_invoke(APR_CFLAGS "(^| )-(g|O)[^ ]*" --cppflags --cflags)
_apr_invoke(APR_INCLUDES "(^| )-I" --includes)
_apr_invoke(APR_LIBRARIES "" --link-ld)
_apr_invoke(APR_EXTRALIBS "" --libs)
_apr_invoke(APR_VERSION "" --version)
string(REGEX REPLACE "^([0-9]+)\\..*$" "\\1" _apr_major "${APR_VERSION}")
endif() # NOT Windows
if(${_apr_major} GREATER 1)
set(APR_CONTAINS_APRUTIL TRUE)
else()
set(APR_CONTAINS_APRUTIL FALSE)
endif()
include(FindPackageHandleStandardArgs)
find_package_handle_standard_args(APR
REQUIRED_VARS APR_LIBRARIES APR_INCLUDES
VERSION_VAR APR_VERSION)
if(APR_FOUND)
if(${CMAKE_SYSTEM_NAME} MATCHES "Windows")
if(APR_LIBRARIES AND APR_RUNTIME_LIBS)
add_library(APR::APR SHARED IMPORTED)
set_target_properties(APR::APR PROPERTIES
INTERFACE_INCLUDE_DIRECTORIES "${APR_INCLUDES}"
IMPORTED_LOCATION "${APR_RUNTIME_LIBS}"
IMPORTED_IMPLIB "${APR_LIBRARIES}")
endif()
if(APR_STATIC_LIBS)
_apru_extras(_apr_static _apr_extra ${APR_STATIC_LIBS})
add_library(APR::APR_static STATIC IMPORTED)
set_target_properties(APR::APR_static PROPERTIES
INTERFACE_INCLUDE_DIRECTORIES "${APR_INCLUDES}"
IMPORTED_INTERFACE_LINK_LIBRARIES "${_apr_extra}"
IMPORTED_LOCATION "${_apr_static}")
endif()
else() # NOT Windows
_apru_location(_apr_library _apr_extra "${APR_LIBRARIES}")
add_library(APR::APR UNKNOWN IMPORTED)
set_target_properties(APR::APR PROPERTIES
INTERFACE_INCLUDE_DIRECTORIES "${APR_INCLUDES}"
INTERFACE_LINK_LIBRARIES "${APR_EXTRALIBS};${_apr_extra}"
IMPORTED_LOCATION "${_apr_library}")
endif() # NOT Windows
endif(APR_FOUND)
endif(NOT _apru_include_only_utilities)