forked from osmocom/wireshark
86 lines
3.4 KiB
CMake
86 lines
3.4 KiB
CMake
# CMake support for fseeko
|
|
#
|
|
# Based on FindLFS.cmake by
|
|
# Copyright (C) 2016 Julian Andres Klode <jak@debian.org>.
|
|
#
|
|
# Permission is hereby granted, free of charge, to any person
|
|
# obtaining a copy of this software and associated documentation files
|
|
# (the "Software"), to deal in the Software without restriction,
|
|
# including without limitation the rights to use, copy, modify, merge,
|
|
# publish, distribute, sublicense, and/or sell copies of the Software,
|
|
# and to permit persons to whom the Software is furnished to do so,
|
|
# subject to the following conditions:
|
|
#
|
|
# The above copyright notice and this permission notice shall be
|
|
# included in all copies or substantial portions of the Software.
|
|
#
|
|
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
|
|
# EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
|
|
# MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
|
|
# NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
|
|
# BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
|
|
# ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
|
|
# CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
|
|
# SOFTWARE.
|
|
#
|
|
# This defines the following variables
|
|
#
|
|
# FSEEKO_DEFINITIONS - List of definitions to pass to add_definitions()
|
|
# FSEEKO_COMPILE_OPTIONS - List of definitions to pass to add_compile_options()
|
|
# FSEEKO_LIBRARIES - List of libraries and linker flags
|
|
# FSEEKO_FOUND - If there is Large files support
|
|
#
|
|
|
|
include(CheckCSourceCompiles)
|
|
include(FindPackageHandleStandardArgs)
|
|
include(CMakePushCheckState)
|
|
|
|
# Check for the availability of fseeko()
|
|
# The cases handled are:
|
|
#
|
|
# * Native fseeko()
|
|
# * Preprocessor flag -D_LARGEFILE_SOURCE
|
|
#
|
|
function(_fseeko_check)
|
|
set(_fseeko_cppflags)
|
|
cmake_push_check_state()
|
|
set(CMAKE_REQUIRED_QUIET 1)
|
|
set(CMAKE_REQUIRED_DEFINITIONS ${LFS_DEFINITIONS})
|
|
message(STATUS "Looking for native fseeko support")
|
|
check_symbol_exists(fseeko stdio.h fseeko_native)
|
|
cmake_pop_check_state()
|
|
if (fseeko_native)
|
|
message(STATUS "Looking for native fseeko support - found")
|
|
set(FSEEKO_FOUND TRUE)
|
|
else()
|
|
message(STATUS "Looking for native fseeko support - not found")
|
|
endif()
|
|
|
|
if (NOT FSEEKO_FOUND)
|
|
# See if it's available with _LARGEFILE_SOURCE.
|
|
cmake_push_check_state()
|
|
set(CMAKE_REQUIRED_QUIET 1)
|
|
set(CMAKE_REQUIRED_DEFINITIONS ${LFS_DEFINITIONS} "-D_LARGEFILE_SOURCE")
|
|
check_symbol_exists(fseeko stdio.h fseeko_need_largefile_source)
|
|
cmake_pop_check_state()
|
|
if (fseeko_need_largefile_source)
|
|
message(STATUS "Looking for fseeko support with _LARGEFILE_SOURCE - found")
|
|
set(FSEEKO_FOUND TRUE)
|
|
set(_fseeko_cppflags "-D_LARGEFILE_SOURCE")
|
|
else()
|
|
message(STATUS "Looking for fseeko support with _LARGEFILE_SOURCE - not found")
|
|
endif()
|
|
endif()
|
|
|
|
set(FSEEKO_DEFINITIONS ${_fseeko_cppflags} CACHE STRING "Extra definitions for fseeko support")
|
|
set(FSEEKO_COMPILE_OPTIONS "" CACHE STRING "Extra compiler options for fseeko support")
|
|
set(FSEEKO_LIBRARIES "" CACHE STRING "Extra definitions for fseeko support")
|
|
set(FSEEKO_FOUND ${FSEEKO_FOUND} CACHE INTERNAL "Found fseeko")
|
|
endfunction()
|
|
|
|
if (NOT FSEEKO_FOUND)
|
|
_fseeko_check()
|
|
endif()
|
|
|
|
find_package_handle_standard_args(FSEEKO "Could not find fseeko. Set FSEEKO_DEFINITIONS, FSEEKO_COMPILE_OPTIONS, FSEEKO_LIBRARIES." FSEEKO_FOUND)
|