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-rw-r--r--m4/libgnurl.m4266
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diff --git a/m4/libgnurl.m4 b/m4/libgnurl.m4
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1# LIBGNURL_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 libgnurl. DEFAULT-ACTION is the string yes or no to
7# specify whether to default to --with-libgnurl or --without-libgnurl.
8# If not supplied, DEFAULT-ACTION is yes. MINIMUM-VERSION is the
9# minimum version of libgnurl 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# libgnurl 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-libgnurl does run ACTION-IF-NO.
15#
16# This macro #defines HAVE_LIBGNURL if a working libgnurl setup is
17# found, and sets @LIBGNURL@ and @LIBGNURL_CPPFLAGS@ to the necessary
18# values. Other useful defines are LIBGNURL_FEATURE_xxx where xxx are
19# the various features supported by libgnurl, and LIBGNURL_PROTOCOL_yyy
20# where yyy are the various protocols supported by libgnurl. 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 $libgnurl_feature_xxx and $libgnurl_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# gnurl-config list (e.g. it's "HTTP" and not "http").
27#
28# Users may override the detected values by doing something like:
29# LIBGNURL="-lgnurl" LIBGNURL_CPPFLAGS="-I/usr/myinclude" ./configure
30#
31# For the sake of sanity, this macro assumes that any libgnurl that is
32# found is after version 7.7.2, the first version that included the
33# gnurl-config script. Note that it is very important for people
34# packaging binary versions of libgnurl to include this script!
35# Without gnurl-config, we can only guess what protocols are available,
36# or use gnurl_version_info to figure it out at runtime.
37
38AC_DEFUN([LIBGNURL_CHECK_CONFIG],
39[
40 AH_TEMPLATE([LIBGNURL_FEATURE_SSL],[Defined if libgnurl supports SSL])
41 AH_TEMPLATE([LIBGNURL_FEATURE_KRB4],[Defined if libgnurl supports KRB4])
42 AH_TEMPLATE([LIBGNURL_FEATURE_IPV6],[Defined if libgnurl supports IPv6])
43 AH_TEMPLATE([LIBGNURL_FEATURE_LIBZ],[Defined if libgnurl supports libz])
44 AH_TEMPLATE([LIBGNURL_FEATURE_ASYNCHDNS],[Defined if libgnurl supports AsynchDNS])
45 AH_TEMPLATE([LIBGNURL_FEATURE_IDN],[Defined if libgnurl supports IDN])
46 AH_TEMPLATE([LIBGNURL_FEATURE_SSPI],[Defined if libgnurl supports SSPI])
47 AH_TEMPLATE([LIBGNURL_FEATURE_NTLM],[Defined if libgnurl supports NTLM])
48
49 AH_TEMPLATE([LIBGNURL_PROTOCOL_HTTP],[Defined if libgnurl supports HTTP])
50 AH_TEMPLATE([LIBGNURL_PROTOCOL_HTTPS],[Defined if libgnurl supports HTTPS])
51 AH_TEMPLATE([LIBGNURL_PROTOCOL_FTP],[Defined if libgnurl supports FTP])
52 AH_TEMPLATE([LIBGNURL_PROTOCOL_FTPS],[Defined if libgnurl supports FTPS])
53 AH_TEMPLATE([LIBGNURL_PROTOCOL_FILE],[Defined if libgnurl supports FILE])
54 AH_TEMPLATE([LIBGNURL_PROTOCOL_TELNET],[Defined if libgnurl supports TELNET])
55 AH_TEMPLATE([LIBGNURL_PROTOCOL_LDAP],[Defined if libgnurl supports LDAP])
56 AH_TEMPLATE([LIBGNURL_PROTOCOL_DICT],[Defined if libgnurl supports DICT])
57 AH_TEMPLATE([LIBGNURL_PROTOCOL_TFTP],[Defined if libgnurl supports TFTP])
58 AH_TEMPLATE([LIBGNURL_PROTOCOL_RTSP],[Defined if libgnurl supports RTSP])
59 AH_TEMPLATE([LIBGNURL_PROTOCOL_POP3],[Defined if libgnurl supports POP3])
60 AH_TEMPLATE([LIBGNURL_PROTOCOL_IMAP],[Defined if libgnurl supports IMAP])
61 AH_TEMPLATE([LIBGNURL_PROTOCOL_SMTP],[Defined if libgnurl supports SMTP])
62
63 AC_ARG_WITH(libgnurl,
64 AC_HELP_STRING([--with-libgnurl=PREFIX],[look for the gnurl library in PREFIX/lib and headers in PREFIX/include]),
65 [_libgnurl_with=$withval],[_libgnurl_with=ifelse([$1],,[yes],[$1])])
66
67 if test "$_libgnurl_with" != "no" ; then
68
69 AC_PROG_AWK
70
71 _libgnurl_version_parse="eval $AWK '{split(\$NF,A,\".\"); X=256*256*A[[1]]+256*A[[2]]+A[[3]]; print X;}'"
72
73 _libgnurl_try_link=yes
74
75 if test -d "$_libgnurl_with" ; then
76 LIBGNURL_CPPFLAGS="-I$withval/include"
77 _libgnurl_ldflags="-L$withval/lib"
78 AC_PATH_PROG([_libgnurl_config],[gnurl-config],[],
79 ["$withval/bin"])
80 else
81 AC_PATH_PROG([_libgnurl_config],[gnurl-config],[],[$PATH])
82 fi
83
84 if test x$_libgnurl_config != "x" ; then
85 AC_CACHE_CHECK([for the version of libgnurl],
86 [libgnurl_cv_lib_gnurl_version],
87 [libgnurl_cv_lib_gnurl_version=`$_libgnurl_config --version | $AWK '{print $[]2}'`])
88
89 _libgnurl_version=`echo $libgnurl_cv_lib_gnurl_version | $_libgnurl_version_parse`
90 _libgnurl_wanted=`echo ifelse([$2],,[0],[$2]) | $_libgnurl_version_parse`
91
92 if test $_libgnurl_wanted -gt 0 ; then
93 AC_CACHE_CHECK([for libgnurl >= version $2],
94 [libgnurl_cv_lib_version_ok],
95 [
96 if test $_libgnurl_version -ge $_libgnurl_wanted ; then
97 libgnurl_cv_lib_version_ok=yes
98 else
99 libgnurl_cv_lib_version_ok=no
100 fi
101 ])
102 fi
103
104 if test $_libgnurl_wanted -eq 0 || test x$libgnurl_cv_lib_version_ok = xyes ; then
105 if test x"$LIBGNURL_CPPFLAGS" = "x" ; then
106 LIBGNURL_CPPFLAGS=`$_libgnurl_config --cflags`
107 fi
108 if test x"$LIBGNURL" = "x" ; then
109 LIBGNURL=`$_libgnurl_config --libs`
110
111 # This is so silly, but Apple actually has a bug in their
112 # gnurl-config script. Fixed in Tiger, but there are still
113 # lots of Panther installs around.
114 case "${host}" in
115 powerpc-apple-darwin7*)
116 LIBGNURL=`echo $LIBGNURL | sed -e 's|-arch i386||g'`
117 ;;
118 esac
119 fi
120
121 # All gnurl-config scripts support --feature
122 _libgnurl_features=`$_libgnurl_config --feature`
123
124 # Is it modern enough to have --protocols? (7.12.4)
125 if test $_libgnurl_version -ge 461828 ; then
126 _libgnurl_protocols=`$_libgnurl_config --protocols`
127 fi
128 else
129 _libgnurl_try_link=no
130 fi
131
132 unset _libgnurl_wanted
133 fi
134
135 if test $_libgnurl_try_link = yes ; then
136
137 # we didn't find gnurl-config, so let's see if the user-supplied
138 # link line (or failing that, "-lgnurl") is enough.
139 LIBGNURL=${LIBGNURL-"$_libgnurl_ldflags -lgnurl"}
140
141 AC_CACHE_CHECK([whether libgnurl is usable],
142 [libgnurl_cv_lib_gnurl_usable],
143 [
144 _libgnurl_save_cppflags=$CPPFLAGS
145 CPPFLAGS="$LIBGNURL_CPPFLAGS $CPPFLAGS"
146 _libgnurl_save_libs=$LIBS
147 LIBS="$LIBGNURL $LIBS"
148
149 AC_LINK_IFELSE([AC_LANG_PROGRAM([#include <curl/curl.h>],[
150/* Try and use a few common options to force a failure if we are
151 missing symbols or can't link. */
152int x;
153curl_easy_setopt(NULL,CURLOPT_URL,NULL);
154x=CURL_ERROR_SIZE;
155x=CURLOPT_WRITEFUNCTION;
156x=CURLOPT_FILE;
157x=CURLOPT_ERRORBUFFER;
158x=CURLOPT_STDERR;
159x=CURLOPT_VERBOSE;
160])],libgnurl_cv_lib_gnurl_usable=yes,libgnurl_cv_lib_gnurl_usable=no)
161
162# BEGIN Changes from original libcurl.m4:
163# Give it a 2nd shot using 'gnurl/curl.h'
164 AC_LINK_IFELSE([AC_LANG_PROGRAM([#include <gnurl/curl.h>],[
165/* Try and use a few common options to force a failure if we are
166 missing symbols or can't link. */
167int x;
168curl_easy_setopt(NULL,CURLOPT_URL,NULL);
169x=CURL_ERROR_SIZE;
170x=CURLOPT_WRITEFUNCTION;
171x=CURLOPT_FILE;
172x=CURLOPT_ERRORBUFFER;
173x=CURLOPT_STDERR;
174x=CURLOPT_VERBOSE;
175])],libgnurl_cv_lib_gnurl_usable=yes)
176# END Changes from original libcurl.m4:
177
178 CPPFLAGS=$_libgnurl_save_cppflags
179 LIBS=$_libgnurl_save_libs
180 unset _libgnurl_save_cppflags
181 unset _libgnurl_save_libs
182 ])
183
184 if test $libgnurl_cv_lib_gnurl_usable = yes ; then
185
186 # Does gnurl_free() exist in this version of libgnurl?
187 # If not, fake it with free()
188
189 _libgnurl_save_cppflags=$CPPFLAGS
190 CPPFLAGS="$CPPFLAGS $LIBGNURL_CPPFLAGS"
191 _libgnurl_save_libs=$LIBS
192 LIBS="$LIBS $LIBGNURL"
193
194 AC_CHECK_FUNC(curl_free,,
195 AC_DEFINE(curl_free,free,
196 [Define curl_free() as free() if our version of gnurl lacks curl_free.]))
197
198 CPPFLAGS=$_libgnurl_save_cppflags
199 LIBS=$_libgnurl_save_libs
200 unset _libgnurl_save_cppflags
201 unset _libgnurl_save_libs
202
203 AC_DEFINE(HAVE_LIBGNURL,1,
204 [Define to 1 if you have a functional gnurl library.])
205 AC_SUBST(LIBGNURL_CPPFLAGS)
206 AC_SUBST(LIBGNURL)
207
208 for _libgnurl_feature in $_libgnurl_features ; do
209 AC_DEFINE_UNQUOTED(AS_TR_CPP(libgnurl_feature_$_libgnurl_feature),[1])
210 eval AS_TR_SH(libgnurl_feature_$_libgnurl_feature)=yes
211 done
212
213 if test "x$_libgnurl_protocols" = "x" ; then
214
215 # We don't have --protocols, so just assume that all
216 # protocols are available
217 _libgnurl_protocols="HTTP FTP FILE TELNET LDAP DICT TFTP"
218
219 if test x$libgnurl_feature_SSL = xyes ; then
220 _libgnurl_protocols="$_libgnurl_protocols HTTPS"
221
222 # FTPS wasn't standards-compliant until version
223 # 7.11.0 (0x070b00 == 461568)
224 if test $_libgnurl_version -ge 461568; then
225 _libgnurl_protocols="$_libgnurl_protocols FTPS"
226 fi
227 fi
228
229 # RTSP, IMAP, POP3 and SMTP were added in
230 # 7.20.0 (0x071400 == 463872)
231 if test $_libgnurl_version -ge 463872; then
232 _libgnurl_protocols="$_libgnurl_protocols RTSP IMAP POP3 SMTP"
233 fi
234 fi
235
236 for _libgnurl_protocol in $_libgnurl_protocols ; do
237 AC_DEFINE_UNQUOTED(AS_TR_CPP(libgnurl_protocol_$_libgnurl_protocol),[1])
238 eval AS_TR_SH(libgnurl_protocol_$_libgnurl_protocol)=yes
239 done
240 else
241 unset LIBGNURL
242 unset LIBGNURL_CPPFLAGS
243 fi
244 fi
245
246 unset _libgnurl_try_link
247 unset _libgnurl_version_parse
248 unset _libgnurl_config
249 unset _libgnurl_feature
250 unset _libgnurl_features
251 unset _libgnurl_protocol
252 unset _libgnurl_protocols
253 unset _libgnurl_version
254 unset _libgnurl_ldflags
255 fi
256
257 if test x$_libgnurl_with = xno || test x$libgnurl_cv_lib_gnurl_usable != xyes ; then
258 # This is the IF-NO path
259 ifelse([$4],,:,[$4])
260 else
261 # This is the IF-YES path
262 ifelse([$3],,:,[$3])
263 fi
264
265 unset _libgnurl_with
266])dnl