mhd_find_add_cc_cflag_ifelse.m4 (1905B)
1 # SYNOPSIS 2 # 3 # MHD_FIND_ADD_CC_CFLAG_IFELSE([ACTION-IF-FOUND], [ACTION-IF-NOT-FOUND], 4 # [VARIABLE-TO-EXTEND], 5 # [FLAG1-TO-TEST], [FLAG2-TO-TEST], ...) 6 # 7 # DESCRIPTION 8 # 9 # This macro checks whether the specific compiler flags are supported. 10 # The flags are checked one-by-one. The checking is stopped when the first 11 # supported flag found. 12 # The checks are performing by appending FLAGx-TO-TEST to the value of 13 # VARIABLE-TO-EXTEND (CFLAGS if not specified), then prepending result to 14 # CFLAGS (unless VARIABLE-TO-EXTEND is CFLAGS), and then performing compile 15 # and link test. If test succeed without warnings, then the flag is added to 16 # VARIABLE-TO-EXTEND and next flags are not checked. If compile-link cycle 17 # cannot be performed without warning with all tested flags, no flag is 18 # added to the VARIABLE-TO-EXTEND. 19 # If any suitable flag is found, ACTION-IF-FOUND is executed otherwise 20 # ACTION-IF-NOT-FOUND is executed. Found flag (if any) is available as 21 # value of shell variable $mhd_cc_found_flag during action execution. 22 # 23 # Example usage: 24 # 25 # MHD_FIND_ADD_CC_CFLAG_IFELSE([AC_MSG_NOTICE([Enabled debug information])], 26 # [], 27 # [additional_CFLAGS], 28 # [-ggdb3], [-g3], [-ggdb], [-g]) 29 # 30 # Note: Unlike others MHD_CHECK_*CC_CFLAG* macro, this macro uses another 31 # order of parameters. 32 # 33 # LICENSE 34 # 35 # Copyright (c) 2022 Karlson2k (Evgeny Grin) <k2k@narod.ru> 36 # 37 # Copying and distribution of this file, with or without modification, are 38 # permitted in any medium without royalty provided the copyright notice 39 # and this notice are preserved. This file is offered as-is, without any 40 # warranty. 41 42 #serial 1 43 44 AC_DEFUN([MHD_FIND_ADD_CC_CFLAG_IFELSE],[dnl 45 _MHD_FIND_ADD_CC_XFLAG([[CFLAGS]],$@)])