1# =========================================================================== 2# https://www.gnu.org/software/autoconf-archive/ax_cflags_warn_all.html 3# =========================================================================== 4# 5# SYNOPSIS 6# 7# AX_CFLAGS_WARN_ALL [(shellvar[, default[, action-if-found[, action-if-not-found]]])] 8# AX_CXXFLAGS_WARN_ALL [(shellvar[, default[, action-if-found[, action-if-not-found]]])] 9# AX_FCFLAGS_WARN_ALL [(shellvar[, default[, action-if-found[, action-if-not-found]]])] 10# 11# DESCRIPTION 12# 13# Specify compiler options that enable most reasonable warnings. For the 14# GNU Compiler Collection (GCC), for example, it will be "-Wall". The 15# result is added to shellvar, one of CFLAGS, CXXFLAGS or FCFLAGS if the 16# first parameter is not specified. 17# 18# Each of these macros accepts the following optional arguments: 19# 20# - $1 - shellvar 21# shell variable to use (CFLAGS, CXXFLAGS or FCFLAGS if not 22# specified, depending on macro) 23# 24# - $2 - default 25# value to use for flags if compiler vendor cannot be determined (by 26# default, "") 27# 28# - $3 - action-if-found 29# action to take if the compiler vendor has been successfully 30# determined (by default, add the appropriate compiler flags to 31# shellvar) 32# 33# - $4 - action-if-not-found 34# action to take if the compiler vendor has not been determined or 35# is unknown (by default, add the default flags, or "" if not 36# specified, to shellvar) 37# 38# These macros use AX_COMPILER_VENDOR to determine which flags should be 39# returned for a given compiler. Not all compilers currently have flags 40# defined for them; patches are welcome. If need be, compiler flags may 41# be made language-dependent: use a construct like the following: 42# 43# [vendor_name], [m4_if(_AC_LANG_PREFIX,[C], VAR="--relevant-c-flags",dnl 44# m4_if(_AC_LANG_PREFIX,[CXX], VAR="--relevant-c++-flags",dnl 45# m4_if(_AC_LANG_PREFIX,[FC], VAR="--relevant-fortran-flags",dnl 46# VAR="$2"; FOUND="no")))], 47# 48# Note: These macros also depend on AX_PREPEND_FLAG. 49# 50# LICENSE 51# 52# Copyright (c) 2008 Guido U. Draheim <guidod@gmx.de> 53# Copyright (c) 2010 Rhys Ulerich <rhys.ulerich@gmail.com> 54# Copyright (c) 2018 John Zaitseff <J.Zaitseff@zap.org.au> 55# 56# This program is free software; you can redistribute it and/or modify it 57# under the terms of the GNU General Public License as published by the 58# Free Software Foundation; either version 3 of the License, or (at your 59# option) any later version. 60# 61# This program is distributed in the hope that it will be useful, but 62# WITHOUT ANY WARRANTY; without even the implied warranty of 63# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General 64# Public License for more details. 65# 66# You should have received a copy of the GNU General Public License along 67# with this program. If not, see <https://www.gnu.org/licenses/>. 68# 69# As a special exception, the respective Autoconf Macro's copyright owner 70# gives unlimited permission to copy, distribute and modify the configure 71# scripts that are the output of Autoconf when processing the Macro. You 72# need not follow the terms of the GNU General Public License when using 73# or distributing such scripts, even though portions of the text of the 74# Macro appear in them. The GNU General Public License (GPL) does govern 75# all other use of the material that constitutes the Autoconf Macro. 76# 77# This special exception to the GPL applies to versions of the Autoconf 78# Macro released by the Autoconf Archive. When you make and distribute a 79# modified version of the Autoconf Macro, you may extend this special 80# exception to the GPL to apply to your modified version as well. 81 82#serial 25 83 84AC_DEFUN([AX_FLAGS_WARN_ALL], [ 85 AX_REQUIRE_DEFINED([AX_PREPEND_FLAG])dnl 86 AC_REQUIRE([AX_COMPILER_VENDOR])dnl 87 88 AS_VAR_PUSHDEF([FLAGS], [m4_default($1,_AC_LANG_PREFIX[]FLAGS)])dnl 89 AS_VAR_PUSHDEF([VAR], [ac_cv_[]_AC_LANG_ABBREV[]flags_warn_all])dnl 90 AS_VAR_PUSHDEF([FOUND], [ac_save_[]_AC_LANG_ABBREV[]flags_warn_all_found])dnl 91 92 AC_CACHE_CHECK([FLAGS for most reasonable warnings], VAR, [ 93 VAR="" 94 FOUND="yes" 95 dnl Cases are listed in the order found in ax_compiler_vendor.m4 96 AS_CASE("$ax_cv_[]_AC_LANG_ABBREV[]_compiler_vendor", 97 [intel], [VAR="-w2"], 98 [ibm], [VAR="-qsrcmsg -qinfo=all:noppt:noppc:noobs:nocnd"], 99 [pathscale], [], 100 [clang], [VAR="-Wall"], 101 [cray], [VAR="-h msglevel 2"], 102 [fujitsu], [], 103 [sdcc], [], 104 [sx], [VAR="-pvctl[,]fullmsg"], 105 [portland], [], 106 [gnu], [VAR="-Wall"], 107 [sun], [VAR="-v"], 108 [hp], [VAR="+w1"], 109 [dec], [VAR="-verbose -w0 -warnprotos"], 110 [borland], [], 111 [comeau], [], 112 [kai], [], 113 [lcc], [], 114 [sgi], [VAR="-fullwarn"], 115 [microsoft], [], 116 [metrowerks], [], 117 [watcom], [], 118 [tcc], [], 119 [unknown], [ 120 VAR="$2" 121 FOUND="no" 122 ], 123 [ 124 AC_MSG_WARN([Unknown compiler vendor returned by [AX_COMPILER_VENDOR]]) 125 VAR="$2" 126 FOUND="no" 127 ] 128 ) 129 130 AS_IF([test "x$FOUND" = "xyes"], [dnl 131 m4_default($3, [AS_IF([test "x$VAR" != "x"], [AX_PREPEND_FLAG([$VAR], [FLAGS])])]) 132 ], [dnl 133 m4_default($4, [m4_ifval($2, [AX_PREPEND_FLAG([$VAR], [FLAGS])], [true])]) 134 ])dnl 135 ])dnl 136 137 AS_VAR_POPDEF([FOUND])dnl 138 AS_VAR_POPDEF([VAR])dnl 139 AS_VAR_POPDEF([FLAGS])dnl 140])dnl AX_FLAGS_WARN_ALL 141 142AC_DEFUN([AX_CFLAGS_WARN_ALL], [dnl 143 AC_LANG_PUSH([C]) 144 AX_FLAGS_WARN_ALL([$1], [$2], [$3], [$4]) 145 AC_LANG_POP([C]) 146])dnl 147 148AC_DEFUN([AX_CXXFLAGS_WARN_ALL], [dnl 149 AC_LANG_PUSH([C++]) 150 AX_FLAGS_WARN_ALL([$1], [$2], [$3], [$4]) 151 AC_LANG_POP([C++]) 152])dnl 153 154AC_DEFUN([AX_FCFLAGS_WARN_ALL], [dnl 155 AC_LANG_PUSH([Fortran]) 156 AX_FLAGS_WARN_ALL([$1], [$2], [$3], [$4]) 157 AC_LANG_POP([Fortran]) 158])dnl 159