mhd_find_add_cc_cflag_ifelse.m4 (1940B)
1 # SPDX-License-Identifier: FSFAP 2 # 3 # SYNOPSIS 4 # 5 # MHD_FIND_ADD_CC_CFLAG_IFELSE([ACTION-IF-FOUND], [ACTION-IF-NOT-FOUND], 6 # [VARIABLE-TO-EXTEND], 7 # [FLAG1-TO-TEST], [FLAG2-TO-TEST], ...) 8 # 9 # DESCRIPTION 10 # 11 # This macro checks whether the specific compiler flags are supported. 12 # The flags are checked one-by-one. The checking is stopped when the first 13 # supported flag found. 14 # The checks are performing by appending FLAGx-TO-TEST to the value of 15 # VARIABLE-TO-EXTEND (CFLAGS if not specified), then prepending result to 16 # CFLAGS (unless VARIABLE-TO-EXTEND is CFLAGS), and then performing compile 17 # and link test. If test succeed without warnings, then the flag is added to 18 # VARIABLE-TO-EXTEND and next flags are not checked. If compile-link cycle 19 # cannot be performed without warning with all tested flags, no flag is 20 # added to the VARIABLE-TO-EXTEND. 21 # If any suitable flag is found, ACTION-IF-FOUND is executed otherwise 22 # ACTION-IF-NOT-FOUND is executed. Found flag (if any) is available as 23 # value of shell variable $mhd_cc_found_flag during action execution. 24 # 25 # Example usage: 26 # 27 # MHD_FIND_ADD_CC_CFLAG_IFELSE([AC_MSG_NOTICE([Enabled debug information])], 28 # [], 29 # [additional_CFLAGS], 30 # [-ggdb3], [-g3], [-ggdb], [-g]) 31 # 32 # Note: Unlike others MHD_CHECK_*CC_CFLAG* macro, this macro uses another 33 # order of parameters. 34 # 35 # LICENSE 36 # 37 # Copyright (c) 2022 Karlson2k (Evgeny Grin) <k2k@narod.ru> 38 # 39 # Copying and distribution of this file, with or without modification, are 40 # permitted in any medium without royalty provided the copyright notice 41 # and this notice are preserved. This file is offered as-is, without any 42 # warranty. 43 44 #serial 1 45 46 AC_DEFUN([MHD_FIND_ADD_CC_CFLAG_IFELSE],[dnl 47 _MHD_FIND_ADD_CC_XFLAG([[CFLAGS]],$@)])