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 AH_TEMPLATE([LIBCURL_PROTOCOL_RTSP],[Defined if libcurl supports RTSP]) 59 AH_TEMPLATE([LIBCURL_PROTOCOL_POP3],[Defined if libcurl supports POP3]) 60 AH_TEMPLATE([LIBCURL_PROTOCOL_IMAP],[Defined if libcurl supports IMAP]) 61 AH_TEMPLATE([LIBCURL_PROTOCOL_SMTP],[Defined if libcurl supports SMTP]) 62 63 AC_ARG_WITH(libcurl, 64 AC_HELP_STRING([--with-libcurl=PREFIX],[look for the curl library in PREFIX/lib and headers in PREFIX/include]), 65 [_libcurl_with=$withval],[_libcurl_with=ifelse([$1],,[yes],[$1])]) 66 67 if test "$_libcurl_with" != "no" ; then 68 69 AC_PROG_AWK 70 71 _libcurl_version_parse="eval $AWK '{split(\$NF,A,\".\"); X=256*256*A[[1]]+256*A[[2]]+A[[3]]; print X;}'" 72 73 _libcurl_try_link=yes 74 75 if test -d "$_libcurl_with" ; then 76 LIBCURL_CPPFLAGS="-I$withval/include" 77 _libcurl_ldflags="-L$withval/lib" 78 AC_PATH_PROG([_libcurl_config],[curl-config],[], 79 ["$withval/bin"]) 80 else 81 AC_PATH_PROG([_libcurl_config],[curl-config],[],[$PATH]) 82 fi 83 84 if test x$_libcurl_config != "x" ; then 85 AC_CACHE_CHECK([for the version of libcurl], 86 [libcurl_cv_lib_curl_version], 87 [libcurl_cv_lib_curl_version=`$_libcurl_config --version | $AWK '{print $[]2}'`]) 88 89 _libcurl_version=`echo $libcurl_cv_lib_curl_version | $_libcurl_version_parse` 90 _libcurl_wanted=`echo ifelse([$2],,[0],[$2]) | $_libcurl_version_parse` 91 92 if test $_libcurl_wanted -gt 0 ; then 93 AC_CACHE_CHECK([for libcurl >= version $2], 94 [libcurl_cv_lib_version_ok], 95 [ 96 if test $_libcurl_version -ge $_libcurl_wanted ; then 97 libcurl_cv_lib_version_ok=yes 98 else 99 libcurl_cv_lib_version_ok=no 100 fi 101 ]) 102 fi 103 104 if test $_libcurl_wanted -eq 0 || test x$libcurl_cv_lib_version_ok = xyes ; then 105 if test x"$LIBCURL_CPPFLAGS" = "x" ; then 106 LIBCURL_CPPFLAGS=`$_libcurl_config --cflags` 107 fi 108 if test x"$LIBCURL" = "x" ; then 109 LIBCURL=`$_libcurl_config --libs` 110 111 # This is so silly, but Apple actually has a bug in their 112 # curl-config script. Fixed in Tiger, but there are still 113 # lots of Panther installs around. 114 case "${host}" in 115 powerpc-apple-darwin7*) 116 LIBCURL=`echo $LIBCURL | sed -e 's|-arch i386||g'` 117 ;; 118 esac 119 fi 120 121 # All curl-config scripts support --feature 122 _libcurl_features=`$_libcurl_config --feature` 123 124 # Is it modern enough to have --protocols? (7.12.4) 125 if test $_libcurl_version -ge 461828 ; then 126 _libcurl_protocols=`$_libcurl_config --protocols` 127 fi 128 else 129 _libcurl_try_link=no 130 fi 131 132 unset _libcurl_wanted 133 fi 134 135 if test $_libcurl_try_link = yes ; then 136 137 # we didn't find curl-config, so let's see if the user-supplied 138 # link line (or failing that, "-lcurl") is enough. 139 LIBCURL=${LIBCURL-"$_libcurl_ldflags -lcurl"} 140 141 AC_CACHE_CHECK([whether libcurl is usable], 142 [libcurl_cv_lib_curl_usable], 143 [ 144 _libcurl_save_cppflags=$CPPFLAGS 145 CPPFLAGS="$LIBCURL_CPPFLAGS $CPPFLAGS" 146 _libcurl_save_libs=$LIBS 147 LIBS="$LIBCURL $LIBS" 148 149 AC_LINK_IFELSE([AC_LANG_PROGRAM([#include <curl/curl.h>],[ 150/* Try and use a few common options to force a failure if we are 151 missing symbols or can't link. */ 152int x; 153curl_easy_setopt(NULL,CURLOPT_URL,NULL); 154x=CURL_ERROR_SIZE; 155x=CURLOPT_WRITEFUNCTION; 156x=CURLOPT_FILE; 157x=CURLOPT_ERRORBUFFER; 158x=CURLOPT_STDERR; 159x=CURLOPT_VERBOSE; 160])],libcurl_cv_lib_curl_usable=yes,libcurl_cv_lib_curl_usable=no) 161 162 CPPFLAGS=$_libcurl_save_cppflags 163 LIBS=$_libcurl_save_libs 164 unset _libcurl_save_cppflags 165 unset _libcurl_save_libs 166 ]) 167 168 if test $libcurl_cv_lib_curl_usable = yes ; then 169 170 # Does curl_free() exist in this version of libcurl? 171 # If not, fake it with free() 172 173 _libcurl_save_cppflags=$CPPFLAGS 174 CPPFLAGS="$CPPFLAGS $LIBCURL_CPPFLAGS" 175 _libcurl_save_libs=$LIBS 176 LIBS="$LIBS $LIBCURL" 177 178 AC_CHECK_FUNC(curl_free,, 179 AC_DEFINE(curl_free,free, 180 [Define curl_free() as free() if our version of curl lacks curl_free.])) 181 182 CPPFLAGS=$_libcurl_save_cppflags 183 LIBS=$_libcurl_save_libs 184 unset _libcurl_save_cppflags 185 unset _libcurl_save_libs 186 187 AC_DEFINE(HAVE_LIBCURL,1, 188 [Define to 1 if you have a functional curl library.]) 189 AC_SUBST(LIBCURL_CPPFLAGS) 190 AC_SUBST(LIBCURL) 191 192 for _libcurl_feature in $_libcurl_features ; do 193 AC_DEFINE_UNQUOTED(AS_TR_CPP(libcurl_feature_$_libcurl_feature),[1]) 194 eval AS_TR_SH(libcurl_feature_$_libcurl_feature)=yes 195 done 196 197 if test "x$_libcurl_protocols" = "x" ; then 198 199 # We don't have --protocols, so just assume that all 200 # protocols are available 201 _libcurl_protocols="HTTP FTP FILE TELNET LDAP DICT TFTP" 202 203 if test x$libcurl_feature_SSL = xyes ; then 204 _libcurl_protocols="$_libcurl_protocols HTTPS" 205 206 # FTPS wasn't standards-compliant until version 207 # 7.11.0 (0x070b00 == 461568) 208 if test $_libcurl_version -ge 461568; then 209 _libcurl_protocols="$_libcurl_protocols FTPS" 210 fi 211 fi 212 213 # RTSP, IMAP, POP3 and SMTP were added in 214 # 7.20.0 (0x071400 == 463872) 215 if test $_libcurl_version -ge 463872; then 216 _libcurl_protocols="$_libcurl_protocols RTSP IMAP POP3 SMTP" 217 fi 218 fi 219 220 for _libcurl_protocol in $_libcurl_protocols ; do 221 AC_DEFINE_UNQUOTED(AS_TR_CPP(libcurl_protocol_$_libcurl_protocol),[1]) 222 eval AS_TR_SH(libcurl_protocol_$_libcurl_protocol)=yes 223 done 224 else 225 unset LIBCURL 226 unset LIBCURL_CPPFLAGS 227 fi 228 fi 229 230 unset _libcurl_try_link 231 unset _libcurl_version_parse 232 unset _libcurl_config 233 unset _libcurl_feature 234 unset _libcurl_features 235 unset _libcurl_protocol 236 unset _libcurl_protocols 237 unset _libcurl_version 238 unset _libcurl_ldflags 239 fi 240 241 if test x$_libcurl_with = xno || test x$libcurl_cv_lib_curl_usable != xyes ; then 242 # This is the IF-NO path 243 ifelse([$4],,:,[$4]) 244 else 245 # This is the IF-YES path 246 ifelse([$3],,:,[$3]) 247 fi 248 249 unset _libcurl_with 250])dnl 251