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