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
6 # ----------------------------------------------------------------------------
7 # libcurl.m4 - autoconf script to detect libcurl
8 # Copyright (C) 2006 David Shaw <dshaw@jabberwocky.com>
10 # All rights reserved.
12 # Permission to use, copy, modify, and distribute this software for any purpose
13 # with or without fee is hereby granted, provided that the above copyright
14 # notice and this permission notice appear in all copies.
16 # THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17 # IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18 # FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OF THIRD PARTY RIGHTS. IN
19 # NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
20 # DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
21 # OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE
22 # OR OTHER DEALINGS IN THE SOFTWARE.
24 # Except as contained in this notice, the name of a copyright holder shall not
25 # be used in advertising or otherwise to promote the sale, use or other dealings
26 # in this Software without prior written authorization of the copyright holder.
27 # ----------------------------------------------------------------------------
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.
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").
51 # Users may override the detected values by doing something like:
52 # LIBCURL="-lcurl" LIBCURL_CPPFLAGS="-I/usr/myinclude" ./configure
54 # For the sake of sanity, this macro assumes that any libcurl that is
55 # found is after version 7.7.2, the first version that included the
56 # curl-config script. Note that it is very important for people
57 # packaging binary versions of libcurl to include this script!
58 # Without curl-config, we can only guess what protocols are available,
59 # or use curl_version_info to figure it out at runtime.
61 AC_DEFUN([LIBCURL_CHECK_CONFIG],
63 AH_TEMPLATE([LIBCURL_FEATURE_SSL],[Defined if libcurl supports SSL])
64 AH_TEMPLATE([LIBCURL_FEATURE_KRB4],[Defined if libcurl supports KRB4])
65 AH_TEMPLATE([LIBCURL_FEATURE_IPV6],[Defined if libcurl supports IPv6])
66 AH_TEMPLATE([LIBCURL_FEATURE_LIBZ],[Defined if libcurl supports libz])
67 AH_TEMPLATE([LIBCURL_FEATURE_ASYNCHDNS],[Defined if libcurl supports AsynchDNS])
68 AH_TEMPLATE([LIBCURL_FEATURE_IDN],[Defined if libcurl supports IDN])
69 AH_TEMPLATE([LIBCURL_FEATURE_SSPI],[Defined if libcurl supports SSPI])
70 AH_TEMPLATE([LIBCURL_FEATURE_NTLM],[Defined if libcurl supports NTLM])
72 AH_TEMPLATE([LIBCURL_PROTOCOL_HTTP],[Defined if libcurl supports HTTP])
73 AH_TEMPLATE([LIBCURL_PROTOCOL_HTTPS],[Defined if libcurl supports HTTPS])
74 AH_TEMPLATE([LIBCURL_PROTOCOL_FTP],[Defined if libcurl supports FTP])
75 AH_TEMPLATE([LIBCURL_PROTOCOL_FTPS],[Defined if libcurl supports FTPS])
76 AH_TEMPLATE([LIBCURL_PROTOCOL_FILE],[Defined if libcurl supports FILE])
77 AH_TEMPLATE([LIBCURL_PROTOCOL_TELNET],[Defined if libcurl supports TELNET])
78 AH_TEMPLATE([LIBCURL_PROTOCOL_LDAP],[Defined if libcurl supports LDAP])
79 AH_TEMPLATE([LIBCURL_PROTOCOL_DICT],[Defined if libcurl supports DICT])
80 AH_TEMPLATE([LIBCURL_PROTOCOL_TFTP],[Defined if libcurl supports TFTP])
83 AC_HELP_STRING([--with-libcurl=DIR],[look for the curl library in DIR]),
84 [_libcurl_with=$withval],[_libcurl_with=ifelse([$1],,[yes],[$1])])
86 if test "$_libcurl_with" != "no" ; then
90 _libcurl_version_parse="eval $AWK '{split(\$NF,A,\".\"); X=256*256*A[[1]]+256*A[[2]]+A[[3]]; print X;}'"
94 if test -d "$_libcurl_with" ; then
95 LIBCURL_CPPFLAGS="-I$withval/include"
96 _libcurl_ldflags="-L$withval/lib"
97 AC_PATH_PROG([_libcurl_config],["$withval/bin/curl-config"])
99 AC_PATH_PROG([_libcurl_config],[curl-config])
102 if test x$_libcurl_config != "x" ; then
103 AC_CACHE_CHECK([for the version of libcurl],
104 [libcurl_cv_lib_curl_version],
105 [libcurl_cv_lib_curl_version=`$_libcurl_config --version | $AWK '{print $[]2}'`])
107 _libcurl_version=`echo $libcurl_cv_lib_curl_version | $_libcurl_version_parse`
108 _libcurl_wanted=`echo ifelse([$2],,[0],[$2]) | $_libcurl_version_parse`
110 if test $_libcurl_wanted -gt 0 ; then
111 AC_CACHE_CHECK([for libcurl >= version $2],
112 [libcurl_cv_lib_version_ok],
114 if test $_libcurl_version -ge $_libcurl_wanted ; then
115 libcurl_cv_lib_version_ok=yes
117 libcurl_cv_lib_version_ok=no
122 if test $_libcurl_wanted -eq 0 || test x$libcurl_cv_lib_version_ok = xyes ; then
123 if test x"$LIBCURL_CPPFLAGS" = "x" ; then
124 LIBCURL_CPPFLAGS=`$_libcurl_config --cflags`
126 if test x"$LIBCURL" = "x" ; then
127 LIBCURL=`$_libcurl_config --libs`
129 # This is so silly, but Apple actually has a bug in their
130 # curl-config script. Fixed in Tiger, but there are still
131 # lots of Panther installs around.
133 powerpc-apple-darwin7*)
134 LIBCURL=`echo $LIBCURL | sed -e 's|-arch i386||g'`
139 # All curl-config scripts support --feature
140 _libcurl_features=`$_libcurl_config --feature`
142 # Is it modern enough to have --protocols? (7.12.4)
143 if test $_libcurl_version -ge 461828 ; then
144 _libcurl_protocols=`$_libcurl_config --protocols`
150 unset _libcurl_wanted
153 if test $_libcurl_try_link = yes ; then
155 # we didn't find curl-config, so let's see if the user-supplied
156 # link line (or failing that, "-lcurl") is enough.
157 LIBCURL=${LIBCURL-"$_libcurl_ldflags -lcurl"}
159 AC_CACHE_CHECK([whether libcurl is usable],
160 [libcurl_cv_lib_curl_usable],
162 _libcurl_save_cppflags=$CPPFLAGS
163 CPPFLAGS="$LIBCURL_CPPFLAGS $CPPFLAGS"
164 _libcurl_save_libs=$LIBS
165 LIBS="$LIBCURL $LIBS"
167 AC_LINK_IFELSE(AC_LANG_PROGRAM([#include <curl/curl.h>],[
168 /* Try and use a few common options to force a failure if we are
169 missing symbols or can't link. */
171 curl_easy_setopt(NULL,CURLOPT_URL,NULL);
173 x=CURLOPT_WRITEFUNCTION;
175 x=CURLOPT_ERRORBUFFER;
178 ]),libcurl_cv_lib_curl_usable=yes,libcurl_cv_lib_curl_usable=no)
180 CPPFLAGS=$_libcurl_save_cppflags
181 LIBS=$_libcurl_save_libs
182 unset _libcurl_save_cppflags
183 unset _libcurl_save_libs
186 if test $libcurl_cv_lib_curl_usable = yes ; then
188 # Does curl_free() exist in this version of libcurl?
189 # If not, fake it with free()
191 _libcurl_save_cppflags=$CPPFLAGS
192 CPPFLAGS="$CPPFLAGS $LIBCURL_CPPFLAGS"
193 _libcurl_save_libs=$LIBS
194 LIBS="$LIBS $LIBCURL"
196 AC_CHECK_FUNC(curl_free,,
197 AC_DEFINE(curl_free,free,
198 [Define curl_free() as free() if our version of curl lacks curl_free.]))
200 CPPFLAGS=$_libcurl_save_cppflags
201 LIBS=$_libcurl_save_libs
202 unset _libcurl_save_cppflags
203 unset _libcurl_save_libs
205 AC_DEFINE(HAVE_LIBCURL,1,
206 [Define to 1 if you have a functional curl library.])
207 AC_SUBST(LIBCURL_CPPFLAGS)
210 for _libcurl_feature in $_libcurl_features ; do
211 AC_DEFINE_UNQUOTED(AS_TR_CPP(libcurl_feature_$_libcurl_feature),[1])
212 eval AS_TR_SH(libcurl_feature_$_libcurl_feature)=yes
215 if test "x$_libcurl_protocols" = "x" ; then
217 # We don't have --protocols, so just assume that all
218 # protocols are available
219 _libcurl_protocols="HTTP FTP FILE TELNET LDAP DICT"
221 if test x$libcurl_feature_SSL = xyes ; then
222 _libcurl_protocols="$_libcurl_protocols HTTPS"
224 # FTPS wasn't standards-compliant until version
226 if test $_libcurl_version -ge 461568; then
227 _libcurl_protocols="$_libcurl_protocols FTPS"
232 for _libcurl_protocol in $_libcurl_protocols ; do
233 AC_DEFINE_UNQUOTED(AS_TR_CPP(libcurl_protocol_$_libcurl_protocol),[1])
234 eval AS_TR_SH(libcurl_protocol_$_libcurl_protocol)=yes
238 unset LIBCURL_CPPFLAGS
242 unset _libcurl_try_link
243 unset _libcurl_version_parse
244 unset _libcurl_config
245 unset _libcurl_feature
246 unset _libcurl_features
247 unset _libcurl_protocol
248 unset _libcurl_protocols
249 unset _libcurl_version
250 unset _libcurl_ldflags
253 if test x$_libcurl_with = xno || test x$libcurl_cv_lib_curl_usable != xyes ; then
254 # This is the IF-NO path
257 # This is the IF-YES path