tlibcurl.m4 - vaccinewars - be a doctor and try to vaccinate the world
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tlibcurl.m4 (11174B)
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1 #***************************************************************************
2 # _ _ ____ _
3 # Project ___| | | | _ \| |
4 # / __| | | | |_) | |
5 # | (__| |_| | _ <| |___
6 # \___|\___/|_| \_\_____|
7 #
8 # Copyright (C) 2006 - 2020, 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.haxx.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 ###########################################################################
22 # LIBCURL_CHECK_CONFIG ([DEFAULT-ACTION], [MINIMUM-VERSION],
23 # [ACTION-IF-YES], [ACTION-IF-NO])
24 # ----------------------------------------------------------
25 # David Shaw <dshaw@jabberwocky.com> May-09-2006
26 #
27 # Checks for libcurl. DEFAULT-ACTION is the string yes or no to
28 # specify whether to default to --with-libcurl or --without-libcurl.
29 # If not supplied, DEFAULT-ACTION is yes. MINIMUM-VERSION is the
30 # minimum version of libcurl to accept. Pass the version as a regular
31 # version number like 7.10.1. If not supplied, any version is
32 # accepted. ACTION-IF-YES is a list of shell commands to run if
33 # libcurl was successfully found and passed the various tests.
34 # ACTION-IF-NO is a list of shell commands that are run otherwise.
35 # Note that using --without-libcurl does run ACTION-IF-NO.
36 #
37 # This macro #defines HAVE_LIBCURL if a working libcurl setup is
38 # found, and sets @LIBCURL@ and @LIBCURL_CPPFLAGS@ to the necessary
39 # values. Other useful defines are LIBCURL_FEATURE_xxx where xxx are
40 # the various features supported by libcurl, and LIBCURL_PROTOCOL_yyy
41 # where yyy are the various protocols supported by libcurl. Both xxx
42 # and yyy are capitalized. See the list of AH_TEMPLATEs at the top of
43 # the macro for the complete list of possible defines. Shell
44 # variables $libcurl_feature_xxx and $libcurl_protocol_yyy are also
45 # defined to 'yes' for those features and protocols that were found.
46 # Note that xxx and yyy keep the same capitalization as in the
47 # curl-config list (e.g. it's "HTTP" and not "http").
48 #
49 # Users may override the detected values by doing something like:
50 # LIBCURL="-lcurl" LIBCURL_CPPFLAGS="-I/usr/myinclude" ./configure
51 #
52 # For the sake of sanity, this macro assumes that any libcurl that is
53 # found is after version 7.7.2, the first version that included the
54 # curl-config script. Note that it is very important for people
55 # packaging binary versions of libcurl to include this script!
56 # Without curl-config, we can only guess what protocols are available,
57 # or use curl_version_info to figure it out at runtime.
58
59 AC_DEFUN([LIBCURL_CHECK_CONFIG],
60 [
61 AH_TEMPLATE([LIBCURL_FEATURE_SSL],[Defined if libcurl supports SSL])
62 AH_TEMPLATE([LIBCURL_FEATURE_KRB4],[Defined if libcurl supports KRB4])
63 AH_TEMPLATE([LIBCURL_FEATURE_IPV6],[Defined if libcurl supports IPv6])
64 AH_TEMPLATE([LIBCURL_FEATURE_LIBZ],[Defined if libcurl supports libz])
65 AH_TEMPLATE([LIBCURL_FEATURE_ASYNCHDNS],[Defined if libcurl supports AsynchDNS])
66 AH_TEMPLATE([LIBCURL_FEATURE_IDN],[Defined if libcurl supports IDN])
67 AH_TEMPLATE([LIBCURL_FEATURE_SSPI],[Defined if libcurl supports SSPI])
68 AH_TEMPLATE([LIBCURL_FEATURE_NTLM],[Defined if libcurl supports NTLM])
69
70 AH_TEMPLATE([LIBCURL_PROTOCOL_HTTP],[Defined if libcurl supports HTTP])
71 AH_TEMPLATE([LIBCURL_PROTOCOL_HTTPS],[Defined if libcurl supports HTTPS])
72 AH_TEMPLATE([LIBCURL_PROTOCOL_FTP],[Defined if libcurl supports FTP])
73 AH_TEMPLATE([LIBCURL_PROTOCOL_FTPS],[Defined if libcurl supports FTPS])
74 AH_TEMPLATE([LIBCURL_PROTOCOL_FILE],[Defined if libcurl supports FILE])
75 AH_TEMPLATE([LIBCURL_PROTOCOL_TELNET],[Defined if libcurl supports TELNET])
76 AH_TEMPLATE([LIBCURL_PROTOCOL_LDAP],[Defined if libcurl supports LDAP])
77 AH_TEMPLATE([LIBCURL_PROTOCOL_DICT],[Defined if libcurl supports DICT])
78 AH_TEMPLATE([LIBCURL_PROTOCOL_TFTP],[Defined if libcurl supports TFTP])
79 AH_TEMPLATE([LIBCURL_PROTOCOL_RTSP],[Defined if libcurl supports RTSP])
80 AH_TEMPLATE([LIBCURL_PROTOCOL_POP3],[Defined if libcurl supports POP3])
81 AH_TEMPLATE([LIBCURL_PROTOCOL_IMAP],[Defined if libcurl supports IMAP])
82 AH_TEMPLATE([LIBCURL_PROTOCOL_SMTP],[Defined if libcurl supports SMTP])
83
84 AC_ARG_WITH(libcurl,
85 AS_HELP_STRING([--with-libcurl=PREFIX],[look for the curl library in PREFIX/lib and headers in PREFIX/include]),
86 [_libcurl_with=$withval],[_libcurl_with=ifelse([$1],,[yes],[$1])])
87
88 if test "$_libcurl_with" != "no" ; then
89
90 AC_PROG_AWK
91
92 _libcurl_version_parse="eval $AWK '{split(\$NF,A,\".\"); X=256*256*A[[1]]+256*A[[2]]+A[[3]]; print X;}'"
93
94 _libcurl_try_link=yes
95
96 if test -d "$_libcurl_with" ; then
97 LIBCURL_CPPFLAGS="-I$withval/include"
98 _libcurl_ldflags="-L$withval/lib"
99 AC_PATH_PROG([_libcurl_config],[curl-config],[],
100 ["$withval/bin"])
101 else
102 AC_PATH_PROG([_libcurl_config],[curl-config],[],[$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 $_libcurl_try_link = yes ; then
157
158 # we didn't find curl-config, so let's see if the user-supplied
159 # link line (or failing that, "-lcurl") is enough.
160 LIBCURL=${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 $LIBS"
169
170 AC_LINK_IFELSE([AC_LANG_PROGRAM([[#include <curl/curl.h>]],[[
171 /* Try and use a few common options to force a failure if we are
172 missing symbols or can't link. */
173 int x;
174 curl_easy_setopt(NULL,CURLOPT_URL,NULL);
175 x=CURL_ERROR_SIZE;
176 x=CURLOPT_WRITEFUNCTION;
177 x=CURLOPT_WRITEDATA;
178 x=CURLOPT_ERRORBUFFER;
179 x=CURLOPT_STDERR;
180 x=CURLOPT_VERBOSE;
181 if (x) {;}
182 ]])],libcurl_cv_lib_curl_usable=yes,libcurl_cv_lib_curl_usable=no)
183
184 CPPFLAGS=$_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 $LIBCURL"
199
200 AC_CHECK_FUNC(curl_free,,
201 AC_DEFINE(curl_free,free,
202 [Define curl_free() as free() if our version of curl lacks curl_free.]))
203
204 CPPFLAGS=$_libcurl_save_cppflags
205 LIBS=$_libcurl_save_libs
206 unset _libcurl_save_cppflags
207 unset _libcurl_save_libs
208
209 AC_DEFINE(HAVE_LIBCURL,1,
210 [Define to 1 if you have a functional curl library.])
211 AC_SUBST(LIBCURL_CPPFLAGS)
212 AC_SUBST(LIBCURL)
213
214 for _libcurl_feature in $_libcurl_features ; do
215 AC_DEFINE_UNQUOTED(AS_TR_CPP(libcurl_feature_$_libcurl_feature),[1])
216 eval AS_TR_SH(libcurl_feature_$_libcurl_feature)=yes
217 done
218
219 if test "x$_libcurl_protocols" = "x" ; then
220
221 # We don't have --protocols, so just assume that all
222 # protocols are available
223 _libcurl_protocols="HTTP FTP FILE TELNET LDAP DICT TFTP"
224
225 if test x$libcurl_feature_SSL = xyes ; then
226 _libcurl_protocols="$_libcurl_protocols HTTPS"
227
228 # FTPS wasn't standards-compliant until version
229 # 7.11.0 (0x070b00 == 461568)
230 if test $_libcurl_version -ge 461568; then
231 _libcurl_protocols="$_libcurl_protocols FTPS"
232 fi
233 fi
234
235 # RTSP, IMAP, POP3 and SMTP were added in
236 # 7.20.0 (0x071400 == 463872)
237 if test $_libcurl_version -ge 463872; then
238 _libcurl_protocols="$_libcurl_protocols RTSP IMAP POP3 SMTP"
239 fi
240 fi
241
242 for _libcurl_protocol in $_libcurl_protocols ; do
243 AC_DEFINE_UNQUOTED(AS_TR_CPP(libcurl_protocol_$_libcurl_protocol),[1])
244 eval AS_TR_SH(libcurl_protocol_$_libcurl_protocol)=yes
245 done
246 else
247 unset LIBCURL
248 unset LIBCURL_CPPFLAGS
249 fi
250 fi
251
252 unset _libcurl_try_link
253 unset _libcurl_version_parse
254 unset _libcurl_config
255 unset _libcurl_feature
256 unset _libcurl_features
257 unset _libcurl_protocol
258 unset _libcurl_protocols
259 unset _libcurl_version
260 unset _libcurl_ldflags
261 fi
262
263 if test x$_libcurl_with = xno || test x$libcurl_cv_lib_curl_usable != xyes ; then
264 # This is the IF-NO path
265 ifelse([$4],,:,[$4])
266 else
267 # This is the IF-YES path
268 ifelse([$3],,:,[$3])
269 fi
270
271 unset _libcurl_with
272 ])dnl