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 # 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.
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").
28 # Users may override the detected values by doing something like:
29 # LIBCURL="-lcurl" LIBCURL_CPPFLAGS="-I/usr/myinclude" ./configure
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.
38 AC_DEFUN([LIBCURL_CHECK_CONFIG],
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])
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])
60 AC_HELP_STRING([--with-libcurl=DIR],[look for the curl library in DIR]),
61 [_libcurl_with=$withval],[_libcurl_with=m4_if([$1],,[yes],[$1])])
63 if test "$_libcurl_with" != "no" ; then
67 _libcurl_version_parse="eval $AWK '{split(\$NF,A,\".\"); X=256*256*A[[1]]+256*A[[2]]+A[[3]]; print X;}'"
68 # More recent versions of curl-config have a direct --vernum
69 # option, but we'd like this code to work with older versions as
70 # well, so just convert --version.
71 _libcurl_vernum_parse="eval $AWK '{printf \"0x%06X\",\$NF}'"
75 if test -d "$_libcurl_with" ; then
76 LIBCURL_CPPFLAGS="-I$withval/include"
77 _libcurl_ldflags="-L$withval/lib"
78 if test -x "$withval/bin/curl-config" ; then
79 _libcurl_config="$withval/bin/curl-config"
84 AC_PATH_PROG([_libcurl_config],[curl-config])
87 if test x$_libcurl_config != "x" ; then
88 AC_CACHE_CHECK([for the version of libcurl],
89 [libcurl_cv_lib_curl_version],
90 [libcurl_cv_lib_curl_version=`$_libcurl_config --version | $AWK '{print $[]2}'`])
92 _libcurl_version=`echo $libcurl_cv_lib_curl_version | $_libcurl_version_parse`
93 _libcurl_wanted=`echo m4_if([$2],,[0],[$2]) | $_libcurl_version_parse`
95 if test $_libcurl_wanted -gt 0 ; then
96 AC_CACHE_CHECK([for libcurl >= version $2],
97 [libcurl_cv_lib_version_ok],
99 if test $_libcurl_version -ge $_libcurl_wanted ; then
100 libcurl_cv_lib_version_ok=yes
102 libcurl_cv_lib_version_ok=no
107 if test $_libcurl_wanted -eq 0 || test x$libcurl_cv_lib_version_ok = xyes ; then
108 if test x"$LIBCURL_CPPFLAGS" = "x" ; then
109 LIBCURL_CPPFLAGS=`$_libcurl_config --cflags`
111 if test x"$LIBCURL" = "x" ; then
112 LIBCURL=`$_libcurl_config --libs`
114 # This is so silly, but Apple actually has a bug in their
115 # curl-config script. Fixed in Tiger, but there are still
116 # lots of Panther installs around.
118 powerpc-apple-darwin7*)
119 LIBCURL=`echo $LIBCURL | sed -e 's|-arch i386||g'`
124 # All curl-config scripts support --feature
125 _libcurl_features=`$_libcurl_config --feature`
127 # Is it modern enough to have --protocols? (7.12.4)
128 if test $_libcurl_version -ge 461828 ; then
129 _libcurl_protocols=`$_libcurl_config --protocols`
135 unset _libcurl_wanted
138 if test $_libcurl_try_link = yes ; then
140 # we didn't find curl-config, so let's see if the user-supplied
141 # link line (or failing that, "-lcurl") is enough.
142 LIBCURL=${LIBCURL-"$_libcurl_ldflags -lcurl"}
144 AC_CACHE_CHECK([whether libcurl is usable],
145 [libcurl_cv_lib_curl_usable],
147 _libcurl_save_cppflags=$CPPFLAGS
148 CPPFLAGS="$LIBCURL_CPPFLAGS $CPPFLAGS"
149 _libcurl_save_libs=$LIBS
150 LIBS="$LIBCURL $LIBS"
152 AC_LINK_IFELSE([AC_LANG_PROGRAM([[#include <curl/curl.h>]],[[
153 /* Try and use a few common options to force a failure if we are
154 missing symbols or cannot link. */
156 curl_easy_setopt(NULL,CURLOPT_URL,NULL);
158 x=CURLOPT_WRITEFUNCTION;
160 x=CURLOPT_ERRORBUFFER;
163 ]])],[libcurl_cv_lib_curl_usable=yes],[libcurl_cv_lib_curl_usable=no])
165 CPPFLAGS=$_libcurl_save_cppflags
166 LIBS=$_libcurl_save_libs
167 unset _libcurl_save_cppflags
168 unset _libcurl_save_libs
171 if test $libcurl_cv_lib_curl_usable = yes ; then
173 # Does curl_free() exist in this version of libcurl?
174 # If not, fake it with free()
176 _libcurl_save_cppflags=$CPPFLAGS
177 CPPFLAGS="$CPPFLAGS $LIBCURL_CPPFLAGS"
178 _libcurl_save_libs=$LIBS
179 LIBS="$LIBS $LIBCURL"
181 AC_CHECK_FUNC(curl_free,,
182 AC_DEFINE(curl_free,free,
183 [Define curl_free() as free() if our version of curl lacks curl_free.]))
185 CPPFLAGS=$_libcurl_save_cppflags
186 LIBS=$_libcurl_save_libs
187 unset _libcurl_save_cppflags
188 unset _libcurl_save_libs
190 AC_DEFINE(HAVE_LIBCURL,1,
191 [Define to 1 if you have a functional curl library.])
192 AC_SUBST(LIBCURL_CPPFLAGS)
195 _libcurl_vernum=`echo $_libcurl_version | $_libcurl_vernum_parse`
197 AC_DEFINE_UNQUOTED(LIBCURL_VERNUM, $_libcurl_vernum,
198 [The version of the libcurl library in packed hex form])
200 for _libcurl_feature in $_libcurl_features ; do
201 AC_DEFINE_UNQUOTED(AS_TR_CPP(libcurl_feature_$_libcurl_feature),[1])
202 eval AS_TR_SH(libcurl_feature_$_libcurl_feature)=yes
205 if test "x$_libcurl_protocols" = "x" ; then
207 # We don't have --protocols, so just assume that all
208 # protocols are available
209 _libcurl_protocols="HTTP FTP FILE TELNET LDAP DICT"
211 if test x$libcurl_feature_SSL = xyes ; then
212 _libcurl_protocols="$_libcurl_protocols HTTPS"
214 # FTPS wasn't standards-compliant until version
216 if test $_libcurl_version -ge 461568; then
217 _libcurl_protocols="$_libcurl_protocols FTPS"
222 for _libcurl_protocol in $_libcurl_protocols ; do
223 AC_DEFINE_UNQUOTED(AS_TR_CPP(libcurl_protocol_$_libcurl_protocol),[1])
224 eval AS_TR_SH(libcurl_protocol_$_libcurl_protocol)=yes
228 unset LIBCURL_CPPFLAGS
232 unset _libcurl_try_link
233 unset _libcurl_version_parse
234 unset _libcurl_config
235 unset _libcurl_feature
236 unset _libcurl_features
237 unset _libcurl_protocol
238 unset _libcurl_protocols
239 unset _libcurl_version
240 unset _libcurl_vernum
241 unset _libcurl_ldflags
244 if test x$_libcurl_with = xno || test x$libcurl_cv_lib_curl_usable != xyes ; then
245 # This is the IF-NO path
248 # This is the IF-YES path