Annotation of embedaddon/curl/docs/libcurl/libcurl.m4, revision 1.1.1.1
1.1 misho 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
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