diff options
Diffstat (limited to 'lib/libpcap/libpcap/cmake/Modules/FindFseeko.cmake')
| -rw-r--r-- | lib/libpcap/libpcap/cmake/Modules/FindFseeko.cmake | 85 |
1 files changed, 85 insertions, 0 deletions
diff --git a/lib/libpcap/libpcap/cmake/Modules/FindFseeko.cmake b/lib/libpcap/libpcap/cmake/Modules/FindFseeko.cmake new file mode 100644 index 0000000..ca53a5a --- /dev/null +++ b/lib/libpcap/libpcap/cmake/Modules/FindFseeko.cmake @@ -0,0 +1,85 @@ +# 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) |