xc-val-flgs.m4 (7016B)
1 #--------------------------------------------------------------------------- 2 # 3 # xc-val-flgs.m4 4 # 5 # Copyright (C) Daniel Stenberg, <daniel@haxx.se> 6 # 7 # Permission to use, copy, modify, and distribute this software for any 8 # purpose with or without fee is hereby granted, provided that the above 9 # copyright notice and this permission notice appear in all copies. 10 # 11 # THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES 12 # WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF 13 # MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR 14 # ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 15 # WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN 16 # ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF 17 # OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 18 # 19 # SPDX-License-Identifier: ISC 20 # 21 #--------------------------------------------------------------------------- 22 23 # serial 1 24 25 26 dnl _XC_CHECK_VAR_LIBS 27 dnl ------------------------------------------------- 28 dnl Private macro. 29 30 AC_DEFUN([_XC_CHECK_VAR_LIBS], [ 31 xc_bad_var_libs=no 32 for xc_word in $LIBS; do 33 case "$xc_word" in 34 -l* | --library=*) 35 : 36 ;; 37 *) 38 xc_bad_var_libs=yes 39 ;; 40 esac 41 done 42 if test $xc_bad_var_libs = yes; then 43 AC_MSG_NOTICE([using LIBS: $LIBS]) 44 AC_MSG_NOTICE([LIBS note: LIBS should only be used to specify libraries (-lname).]) 45 fi 46 ]) 47 48 49 dnl _XC_CHECK_VAR_LDFLAGS 50 dnl ------------------------------------------------- 51 dnl Private macro. 52 53 AC_DEFUN([_XC_CHECK_VAR_LDFLAGS], [ 54 xc_bad_var_ldflags=no 55 for xc_word in $LDFLAGS; do 56 case "$xc_word" in 57 -D*) 58 xc_bad_var_ldflags=yes 59 ;; 60 -U*) 61 xc_bad_var_ldflags=yes 62 ;; 63 -I*) 64 xc_bad_var_ldflags=yes 65 ;; 66 -l* | --library=*) 67 xc_bad_var_ldflags=yes 68 ;; 69 esac 70 done 71 if test $xc_bad_var_ldflags = yes; then 72 AC_MSG_NOTICE([using LDFLAGS: $LDFLAGS]) 73 xc_bad_var_msg="LDFLAGS note: LDFLAGS should only be used to specify linker flags, not" 74 for xc_word in $LDFLAGS; do 75 case "$xc_word" in 76 -D*) 77 AC_MSG_NOTICE([$xc_bad_var_msg macro definitions. Use CPPFLAGS for: $xc_word]) 78 ;; 79 -U*) 80 AC_MSG_NOTICE([$xc_bad_var_msg macro suppressions. Use CPPFLAGS for: $xc_word]) 81 ;; 82 -I*) 83 AC_MSG_NOTICE([$xc_bad_var_msg include directories. Use CPPFLAGS for: $xc_word]) 84 ;; 85 -l* | --library=*) 86 AC_MSG_NOTICE([$xc_bad_var_msg libraries. Use LIBS for: $xc_word]) 87 ;; 88 esac 89 done 90 fi 91 ]) 92 93 94 dnl _XC_CHECK_VAR_CPPFLAGS 95 dnl ------------------------------------------------- 96 dnl Private macro. 97 98 AC_DEFUN([_XC_CHECK_VAR_CPPFLAGS], [ 99 xc_bad_var_cppflags=no 100 for xc_word in $CPPFLAGS; do 101 case "$xc_word" in 102 -rpath*) 103 xc_bad_var_cppflags=yes 104 ;; 105 -L* | --library-path=*) 106 xc_bad_var_cppflags=yes 107 ;; 108 -l* | --library=*) 109 xc_bad_var_cppflags=yes 110 ;; 111 esac 112 done 113 if test $xc_bad_var_cppflags = yes; then 114 AC_MSG_NOTICE([using CPPFLAGS: $CPPFLAGS]) 115 xc_bad_var_msg="CPPFLAGS note: CPPFLAGS should only be used to specify C preprocessor flags, not" 116 for xc_word in $CPPFLAGS; do 117 case "$xc_word" in 118 -rpath*) 119 AC_MSG_NOTICE([$xc_bad_var_msg library runtime directories. Use LDFLAGS for: $xc_word]) 120 ;; 121 -L* | --library-path=*) 122 AC_MSG_NOTICE([$xc_bad_var_msg library directories. Use LDFLAGS for: $xc_word]) 123 ;; 124 -l* | --library=*) 125 AC_MSG_NOTICE([$xc_bad_var_msg libraries. Use LIBS for: $xc_word]) 126 ;; 127 esac 128 done 129 fi 130 ]) 131 132 133 dnl _XC_CHECK_VAR_CFLAGS 134 dnl ------------------------------------------------- 135 dnl Private macro. 136 137 AC_DEFUN([_XC_CHECK_VAR_CFLAGS], [ 138 xc_bad_var_cflags=no 139 for xc_word in $CFLAGS; do 140 case "$xc_word" in 141 -D*) 142 xc_bad_var_cflags=yes 143 ;; 144 -U*) 145 xc_bad_var_cflags=yes 146 ;; 147 -I*) 148 xc_bad_var_cflags=yes 149 ;; 150 -rpath*) 151 xc_bad_var_cflags=yes 152 ;; 153 -L* | --library-path=*) 154 xc_bad_var_cflags=yes 155 ;; 156 -l* | --library=*) 157 xc_bad_var_cflags=yes 158 ;; 159 esac 160 done 161 if test $xc_bad_var_cflags = yes; then 162 AC_MSG_NOTICE([using CFLAGS: $CFLAGS]) 163 xc_bad_var_msg="CFLAGS note: CFLAGS should only be used to specify C compiler flags, not" 164 for xc_word in $CFLAGS; do 165 case "$xc_word" in 166 -D*) 167 AC_MSG_NOTICE([$xc_bad_var_msg macro definitions. Use CPPFLAGS for: $xc_word]) 168 ;; 169 -U*) 170 AC_MSG_NOTICE([$xc_bad_var_msg macro suppressions. Use CPPFLAGS for: $xc_word]) 171 ;; 172 -I*) 173 AC_MSG_NOTICE([$xc_bad_var_msg include directories. Use CPPFLAGS for: $xc_word]) 174 ;; 175 -rpath*) 176 AC_MSG_NOTICE([$xc_bad_var_msg library runtime directories. Use LDFLAGS for: $xc_word]) 177 ;; 178 -L* | --library-path=*) 179 AC_MSG_NOTICE([$xc_bad_var_msg library directories. Use LDFLAGS for: $xc_word]) 180 ;; 181 -l* | --library=*) 182 AC_MSG_NOTICE([$xc_bad_var_msg libraries. Use LIBS for: $xc_word]) 183 ;; 184 esac 185 done 186 fi 187 ]) 188 189 190 dnl XC_CHECK_USER_FLAGS 191 dnl ------------------------------------------------- 192 dnl Public macro. 193 dnl 194 dnl Performs some sanity checks for LIBS, LDFLAGS, 195 dnl CPPFLAGS and CFLAGS values that the user might 196 dnl have set. When checks fails, user is noticed 197 dnl about errors detected in all of them and script 198 dnl execution is halted. 199 dnl 200 dnl Intended to be used early in configure script. 201 202 AC_DEFUN([XC_CHECK_USER_FLAGS], [ 203 AC_PREREQ([2.50])dnl 204 AC_BEFORE([$0],[XC_CHECK_PROG_CC])dnl 205 dnl check order below matters 206 _XC_CHECK_VAR_LIBS 207 _XC_CHECK_VAR_LDFLAGS 208 _XC_CHECK_VAR_CPPFLAGS 209 _XC_CHECK_VAR_CFLAGS 210 if test $xc_bad_var_libs = yes || 211 test $xc_bad_var_cflags = yes || 212 test $xc_bad_var_ldflags = yes || 213 test $xc_bad_var_cppflags = yes; then 214 AC_MSG_ERROR([Can not continue. Fix errors mentioned immediately above this line.]) 215 fi 216 ]) 217 218 219 dnl XC_CHECK_BUILD_FLAGS 220 dnl ------------------------------------------------- 221 dnl Public macro. 222 dnl 223 dnl Performs some sanity checks for LIBS, LDFLAGS, 224 dnl CPPFLAGS and CFLAGS values that the configure 225 dnl script might have set. When checks fails, user 226 dnl is noticed about errors detected in all of them 227 dnl but script continues execution. 228 dnl 229 dnl Intended to be used very late in configure script. 230 231 AC_DEFUN([XC_CHECK_BUILD_FLAGS], [ 232 AC_PREREQ([2.50])dnl 233 dnl check order below matters 234 _XC_CHECK_VAR_LIBS 235 _XC_CHECK_VAR_LDFLAGS 236 _XC_CHECK_VAR_CPPFLAGS 237 _XC_CHECK_VAR_CFLAGS 238 if test $xc_bad_var_libs = yes || 239 test $xc_bad_var_cflags = yes || 240 test $xc_bad_var_ldflags = yes || 241 test $xc_bad_var_cppflags = yes; then 242 AC_MSG_WARN([Continuing even with errors mentioned immediately above this line.]) 243 fi 244 ])