| # - Use compat library providing various functions and macros that may be missing on some systems |
| # Once done this will define |
| # |
| # compatsrc - sources to add to compilation |
| # |
| # Additionally, "compat.h" include directory is added and can be included. |
| # |
| # Author Michal Vasko <mvasko@cesnet.cz> |
| # Copyright (c) 2021 CESNET, z.s.p.o. |
| # |
| # This source code is licensed under BSD 3-Clause License (the "License"). |
| # You may not use this file except in compliance with the License. |
| # You may obtain a copy of the License at |
| # |
| # https://opensource.org/licenses/BSD-3-Clause |
| # |
| include(CheckSymbolExists) |
| include(CheckFunctionExists) |
| include(CheckIncludeFile) |
| include(TestBigEndian) |
| if(POLICY CMP0075) |
| cmake_policy(SET CMP0075 NEW) |
| endif() |
| |
| 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) |
| list(APPEND CMAKE_REQUIRED_DEFINITIONS -D_DEFAULT_SOURCE) |
| set(CMAKE_REQUIRED_LIBRARIES pthread) |
| |
| 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(getline "stdio.h" HAVE_GETLINE) |
| |
| check_symbol_exists(strndup "string.h" HAVE_STRNDUP) |
| check_symbol_exists(strnstr "string.h" HAVE_STRNSTR) |
| check_symbol_exists(strdupa "string.h" HAVE_STRDUPA) |
| check_symbol_exists(strchrnul "string.h" HAVE_STRCHRNUL) |
| |
| check_symbol_exists(get_current_dir_name "unistd.h" HAVE_GET_CURRENT_DIR_NAME) |
| |
| check_function_exists(pthread_mutex_timedlock HAVE_PTHREAD_MUTEX_TIMEDLOCK) |
| |
| TEST_BIG_ENDIAN(IS_BIG_ENDIAN) |
| |
| check_include_file("stdatomic.h" HAVE_STDATOMIC) |
| |
| include(CheckStructHasMember) |
| check_struct_has_member("struct tm" tm_gmtoff time.h HAVE_TM_GMTOFF) |
| check_symbol_exists(timezone time.h HAVE_TIME_H_TIMEZONE) |
| |
| check_symbol_exists(realpath "stdlib.h" HAVE_REALPATH) |
| check_symbol_exists(localtime_r "time.h" HAVE_LOCALTIME_R) |
| check_symbol_exists(gmtime_r "time.h" HAVE_GMTIME_R) |
| check_symbol_exists(timegm "time.h" HAVE_TIMEGM) |
| check_symbol_exists(strptime "time.h" HAVE_STRPTIME) |
| check_symbol_exists(mmap "sys/mman.h" HAVE_MMAP) |
| check_symbol_exists(dirname "libgen.h" HAVE_DIRNAME) |
| check_symbol_exists(setenv "stdlib.h" HAVE_SETENV) |
| |
| unset(CMAKE_REQUIRED_DEFINITIONS) |
| unset(CMAKE_REQUIRED_LIBRARIES) |
| |
| # header and source file (adding the source directly allows for hiding its symbols) |
| configure_file(${PROJECT_SOURCE_DIR}/compat/compat.h.in ${PROJECT_BINARY_DIR}/compat/compat.h @ONLY) |
| include_directories(${PROJECT_BINARY_DIR}/compat) |
| set(compatsrc ${PROJECT_SOURCE_DIR}/compat/compat.c) |
| if(WIN32) |
| include_directories(${PROJECT_SOURCE_DIR}/compat/posix-shims) |
| endif() |
| if(NOT HAVE_STRPTIME) |
| set(compatsrc ${compatsrc} ${PROJECT_SOURCE_DIR}/compat/strptime.c) |
| endif() |
| endmacro() |