libcurl.m4 (10924B)
1 #*************************************************************************** 2 # _ _ ____ _ 3 # Project ___| | | | _ \| | 4 # / __| | | | |_) | | 5 # | (__| |_| | _ <| |___ 6 # \___|\___/|_| \_\_____| 7 # 8 # Copyright (C) David Shaw <dshaw@jabberwocky.com> 9 # 10 # This software is licensed as described in the file COPYING, which 11 # you should have received as part of this distribution. The terms 12 # are also available at https://curl.se/docs/copyright.html. 13 # 14 # You may opt to use, copy, modify, merge, publish, distribute and/or sell 15 # copies of the Software, and permit persons to whom the Software is 16 # furnished to do so, under the terms of the COPYING file. 17 # 18 # This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY 19 # KIND, either express or implied. 20 # 21 # SPDX-License-Identifier: curl 22 # 23 ########################################################################### 24 # LIBCURL_CHECK_CONFIG([DEFAULT-ACTION], [MINIMUM-VERSION], 25 # [ACTION-IF-YES], [ACTION-IF-NO]) 26 # ---------------------------------------------------------- 27 # David Shaw <dshaw@jabberwocky.com> May-09-2006 28 # 29 # Checks for libcurl. DEFAULT-ACTION is the string yes or no to 30 # specify whether to default to --with-libcurl or --without-libcurl. 31 # If not supplied, DEFAULT-ACTION is yes. MINIMUM-VERSION is the 32 # minimum version of libcurl to accept. Pass the version as a regular 33 # version number like 7.10.1. If not supplied, any version is 34 # accepted. ACTION-IF-YES is a list of shell commands to run if 35 # libcurl was successfully found and passed the various tests. 36 # ACTION-IF-NO is a list of shell commands that are run otherwise. 37 # Note that using --without-libcurl does run ACTION-IF-NO. 38 # 39 # This macro #defines HAVE_LIBCURL if a working libcurl setup is 40 # found, and sets @LIBCURL@ and @LIBCURL_CPPFLAGS@ to the necessary 41 # values. Other useful defines are LIBCURL_FEATURE_xxx where xxx are 42 # the various features supported by libcurl, and LIBCURL_PROTOCOL_yyy 43 # where yyy are the various protocols supported by libcurl. Both xxx 44 # and yyy are capitalized. See the list of AH_TEMPLATEs at the top of 45 # the macro for the complete list of possible defines. Shell 46 # variables $libcurl_feature_xxx and $libcurl_protocol_yyy are also 47 # defined to 'yes' for those features and protocols that were found. 48 # Note that xxx and yyy keep the same capitalization as in the 49 # curl-config list (e.g. it's "HTTP" and not "http"). 50 # 51 # Users may override the detected values by doing something like: 52 # LIBCURL="-lcurl" LIBCURL_CPPFLAGS="-I/usr/myinclude" ./configure 53 # 54 # For the sake of sanity, this macro assumes that any libcurl that is found is 55 # after version 7.7.2, the first version that included the curl-config script. 56 # Note that it is important for people packaging binary versions of libcurl to 57 # include this script! Without curl-config, we can only guess what protocols 58 # are available, or use curl_version_info to figure it out at runtime. 59 60 AC_DEFUN([LIBCURL_CHECK_CONFIG], 61 [ 62 AH_TEMPLATE([LIBCURL_FEATURE_SSL],[Defined if libcurl supports SSL]) 63 AH_TEMPLATE([LIBCURL_FEATURE_KRB4],[Defined if libcurl supports KRB4]) 64 AH_TEMPLATE([LIBCURL_FEATURE_IPV6],[Defined if libcurl supports IPv6]) 65 AH_TEMPLATE([LIBCURL_FEATURE_LIBZ],[Defined if libcurl supports libz]) 66 AH_TEMPLATE([LIBCURL_FEATURE_ASYNCHDNS],[Defined if libcurl supports AsynchDNS]) 67 AH_TEMPLATE([LIBCURL_FEATURE_IDN],[Defined if libcurl supports IDN]) 68 AH_TEMPLATE([LIBCURL_FEATURE_SSPI],[Defined if libcurl supports SSPI]) 69 AH_TEMPLATE([LIBCURL_FEATURE_NTLM],[Defined if libcurl supports NTLM]) 70 71 AH_TEMPLATE([LIBCURL_PROTOCOL_HTTP],[Defined if libcurl supports HTTP]) 72 AH_TEMPLATE([LIBCURL_PROTOCOL_HTTPS],[Defined if libcurl supports HTTPS]) 73 AH_TEMPLATE([LIBCURL_PROTOCOL_FTP],[Defined if libcurl supports FTP]) 74 AH_TEMPLATE([LIBCURL_PROTOCOL_FTPS],[Defined if libcurl supports FTPS]) 75 AH_TEMPLATE([LIBCURL_PROTOCOL_FILE],[Defined if libcurl supports FILE]) 76 AH_TEMPLATE([LIBCURL_PROTOCOL_TELNET],[Defined if libcurl supports TELNET]) 77 AH_TEMPLATE([LIBCURL_PROTOCOL_LDAP],[Defined if libcurl supports LDAP]) 78 AH_TEMPLATE([LIBCURL_PROTOCOL_DICT],[Defined if libcurl supports DICT]) 79 AH_TEMPLATE([LIBCURL_PROTOCOL_TFTP],[Defined if libcurl supports TFTP]) 80 AH_TEMPLATE([LIBCURL_PROTOCOL_RTSP],[Defined if libcurl supports RTSP]) 81 AH_TEMPLATE([LIBCURL_PROTOCOL_POP3],[Defined if libcurl supports POP3]) 82 AH_TEMPLATE([LIBCURL_PROTOCOL_IMAP],[Defined if libcurl supports IMAP]) 83 AH_TEMPLATE([LIBCURL_PROTOCOL_SMTP],[Defined if libcurl supports SMTP]) 84 85 AC_ARG_WITH(libcurl, 86 AS_HELP_STRING([--with-libcurl=PREFIX],[look for the curl library in PREFIX/lib and headers in PREFIX/include]), 87 [_libcurl_with=$withval],[_libcurl_with=ifelse([$1],,[yes],[$1])]) 88 89 if test "$_libcurl_with" != "no"; then 90 91 AC_PROG_AWK 92 93 _libcurl_version_parse="eval $AWK '{split(\$NF,A,\".\"); X=256*256*A[[1]]+256*A[[2]]+A[[3]]; print X;}'" 94 95 _libcurl_try_link=yes 96 97 if test -d "$_libcurl_with"; then 98 LIBCURL_CPPFLAGS="-I$withval/include" 99 _libcurl_ldflags="-L$withval/lib" 100 AC_PATH_PROG([_libcurl_config],[curl-config],[],["$withval/bin"]) 101 else 102 AC_PATH_PROG([_libcurl_config],[curl-config],[],[$PATH]) 103 fi 104 105 if test x$_libcurl_config != "x"; then 106 AC_CACHE_CHECK([for the version of libcurl], 107 [libcurl_cv_lib_curl_version], 108 [libcurl_cv_lib_curl_version=`$_libcurl_config --version | $AWK '{print $[]2}'`]) 109 110 _libcurl_version=`echo $libcurl_cv_lib_curl_version | $_libcurl_version_parse` 111 _libcurl_wanted=`echo ifelse([$2],,[0],[$2]) | $_libcurl_version_parse` 112 113 if test $_libcurl_wanted -gt 0; then 114 AC_CACHE_CHECK([for libcurl >= version $2], 115 [libcurl_cv_lib_version_ok], 116 [ 117 if test $_libcurl_version -ge $_libcurl_wanted; then 118 libcurl_cv_lib_version_ok=yes 119 else 120 libcurl_cv_lib_version_ok=no 121 fi 122 ]) 123 fi 124 125 if test $_libcurl_wanted -eq 0 || test x$libcurl_cv_lib_version_ok = xyes; then 126 if test x"$LIBCURL_CPPFLAGS" = "x"; then 127 LIBCURL_CPPFLAGS=`$_libcurl_config --cflags` 128 fi 129 if test x"$LIBCURL" = "x"; then 130 LIBCURL=`$_libcurl_config --libs` 131 132 # This is so silly, but Apple actually has a bug in their 133 # curl-config script. Fixed in Tiger, but there are still 134 # lots of Panther installs around. 135 case "${host}" in 136 powerpc-apple-darwin7*) 137 LIBCURL=`echo $LIBCURL | sed -e 's|-arch i386||g'` 138 ;; 139 esac 140 fi 141 142 # All curl-config scripts support --feature 143 _libcurl_features=`$_libcurl_config --feature` 144 145 # Is it modern enough to have --protocols? (7.12.4) 146 if test $_libcurl_version -ge 461828; then 147 _libcurl_protocols=`$_libcurl_config --protocols` 148 fi 149 else 150 _libcurl_try_link=no 151 fi 152 153 unset _libcurl_wanted 154 fi 155 156 if test $_libcurl_try_link = yes; then 157 158 # we did not find curl-config, so let's see if the user-supplied 159 # link line (or failing that, "-lcurl") is enough. 160 LIBCURL=${LIBCURL-"$_libcurl_ldflags -lcurl"} 161 162 AC_CACHE_CHECK([whether libcurl is usable], 163 [libcurl_cv_lib_curl_usable], 164 [ 165 _libcurl_save_cppflags=$CPPFLAGS 166 CPPFLAGS="$LIBCURL_CPPFLAGS $CPPFLAGS" 167 _libcurl_save_libs=$LIBS 168 LIBS="$LIBCURL $LIBS" 169 170 AC_LINK_IFELSE([AC_LANG_PROGRAM([[#include <curl/curl.h>]],[[ 171 /* Try to use a few common options to force a failure if we are 172 missing symbols or cannot link. */ 173 int x; 174 curl_easy_setopt(NULL,CURLOPT_URL,NULL); 175 x=CURL_ERROR_SIZE; 176 x=CURLOPT_WRITEFUNCTION; 177 x=CURLOPT_WRITEDATA; 178 x=CURLOPT_ERRORBUFFER; 179 x=CURLOPT_STDERR; 180 x=CURLOPT_VERBOSE; 181 if (x) {;} 182 ]])],libcurl_cv_lib_curl_usable=yes,libcurl_cv_lib_curl_usable=no) 183 184 CPPFLAGS=$_libcurl_save_cppflags 185 LIBS=$_libcurl_save_libs 186 unset _libcurl_save_cppflags 187 unset _libcurl_save_libs 188 ]) 189 190 if test $libcurl_cv_lib_curl_usable = yes; then 191 192 # Does curl_free() exist in this version of libcurl? 193 # If not, fake it with free() 194 195 _libcurl_save_cppflags=$CPPFLAGS 196 CPPFLAGS="$CPPFLAGS $LIBCURL_CPPFLAGS" 197 _libcurl_save_libs=$LIBS 198 LIBS="$LIBS $LIBCURL" 199 200 AC_CHECK_DECL([curl_free],[], 201 [AC_DEFINE([curl_free],[free], 202 [Define curl_free() as free() if our version of curl lacks curl_free.])], 203 [[#include <curl/curl.h>]]) 204 205 CPPFLAGS=$_libcurl_save_cppflags 206 LIBS=$_libcurl_save_libs 207 unset _libcurl_save_cppflags 208 unset _libcurl_save_libs 209 210 AC_DEFINE(HAVE_LIBCURL,1, 211 [Define to 1 if you have a functional curl library.]) 212 AC_SUBST(LIBCURL_CPPFLAGS) 213 AC_SUBST(LIBCURL) 214 215 for _libcurl_feature in $_libcurl_features; do 216 AC_DEFINE_UNQUOTED(AS_TR_CPP(libcurl_feature_$_libcurl_feature),[1]) 217 eval AS_TR_SH(libcurl_feature_$_libcurl_feature)=yes 218 done 219 220 if test "x$_libcurl_protocols" = "x"; then 221 222 # We do not have --protocols, so just assume that all 223 # protocols are available 224 _libcurl_protocols="HTTP FTP FILE TELNET LDAP DICT TFTP" 225 226 if test x$libcurl_feature_SSL = xyes; then 227 _libcurl_protocols="$_libcurl_protocols HTTPS" 228 229 # FTPS was not standards-compliant until version 230 # 7.11.0 (0x070b00 == 461568) 231 if test $_libcurl_version -ge 461568; then 232 _libcurl_protocols="$_libcurl_protocols FTPS" 233 fi 234 fi 235 236 # RTSP, IMAP, POP3 and SMTP were added in 237 # 7.20.0 (0x071400 == 463872) 238 if test $_libcurl_version -ge 463872; then 239 _libcurl_protocols="$_libcurl_protocols RTSP IMAP POP3 SMTP" 240 fi 241 fi 242 243 for _libcurl_protocol in $_libcurl_protocols; do 244 AC_DEFINE_UNQUOTED(AS_TR_CPP(libcurl_protocol_$_libcurl_protocol),[1]) 245 eval AS_TR_SH(libcurl_protocol_$_libcurl_protocol)=yes 246 done 247 else 248 unset LIBCURL 249 unset LIBCURL_CPPFLAGS 250 fi 251 fi 252 253 unset _libcurl_try_link 254 unset _libcurl_version_parse 255 unset _libcurl_config 256 unset _libcurl_feature 257 unset _libcurl_features 258 unset _libcurl_protocol 259 unset _libcurl_protocols 260 unset _libcurl_version 261 unset _libcurl_ldflags 262 fi 263 264 if test x$_libcurl_with = xno || test x$libcurl_cv_lib_curl_usable != xyes; then 265 # This is the IF-NO path 266 ifelse([$4],,:,[$4]) 267 else 268 # This is the IF-YES path 269 ifelse([$3],,:,[$3]) 270 fi 271 272 unset _libcurl_with 273 ])