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cmake_minimum_required(VERSION 2.8.12)
include(CheckSymbolExists)
include(TestBigEndian)
macro(USE_COMPAT)
# compatibility checks
set(CMAKE_REQUIRED_DEFINITIONS -D_POSIX_C_SOURCE=200809L)
list(APPEND CMAKE_REQUIRED_DEFINITIONS -D_GNU_SOURCE)
list(APPEND CMAKE_REQUIRED_DEFINITIONS -D__BSD_VISIBLE=1)
check_symbol_exists(vdprintf "stdio.h;stdarg.h" HAVE_VDPRINTF)
check_symbol_exists(asprintf "stdio.h" HAVE_ASPRINTF)
check_symbol_exists(vasprintf "stdio.h" HAVE_VASPRINTF)
check_symbol_exists(get_current_dir_name "unistd.h" HAVE_GET_CURRENT_DIR_NAME)
check_symbol_exists(strndup "string.h" HAVE_STRNDUP)
check_symbol_exists(getline "stdio.h" HAVE_GETLINE)
TEST_BIG_ENDIAN(IS_BIG_ENDIAN)
# header and object file
configure_file(${PROJECT_SOURCE_DIR}/compat/compat.h.in ${PROJECT_BINARY_DIR}/compat.h @ONLY)
include_directories(${PROJECT_BINARY_DIR})
add_library(compat OBJECT ${PROJECT_SOURCE_DIR}/compat/compat.c)
set_property(TARGET compat PROPERTY POSITION_INDEPENDENT_CODE ON)
endmacro()
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