Annotation of embedaddon/curl/docs/libcurl/libcurl.m4, revision 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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