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curl/docs/libcurl/libcurl.m4
Daniel Stenberg bc4582b68a Chris Conroy brought support for RTSP transfers, and with it comes 8(!) new
libcurl options for controlling what to get and how to receive posssibly
interleaved RTP data. Initial commit.
2010-01-21 13:58:30 +00:00

242 lines
9.1 KiB
Plaintext

# LIBCURL_CHECK_CONFIG ([DEFAULT-ACTION], [MINIMUM-VERSION],
# [ACTION-IF-YES], [ACTION-IF-NO])
# ----------------------------------------------------------
# David Shaw <dshaw@jabberwocky.com> May-09-2006
#
# Checks for libcurl. DEFAULT-ACTION is the string yes or no to
# specify whether to default to --with-libcurl or --without-libcurl.
# If not supplied, DEFAULT-ACTION is yes. MINIMUM-VERSION is the
# minimum version of libcurl to accept. Pass the version as a regular
# version number like 7.10.1. If not supplied, any version is
# accepted. ACTION-IF-YES is a list of shell commands to run if
# libcurl was successfully found and passed the various tests.
# ACTION-IF-NO is a list of shell commands that are run otherwise.
# Note that using --without-libcurl does run ACTION-IF-NO.
#
# This macro #defines HAVE_LIBCURL if a working libcurl setup is
# found, and sets @LIBCURL@ and @LIBCURL_CPPFLAGS@ to the necessary
# values. Other useful defines are LIBCURL_FEATURE_xxx where xxx are
# the various features supported by libcurl, and LIBCURL_PROTOCOL_yyy
# where yyy are the various protocols supported by libcurl. Both xxx
# and yyy are capitalized. See the list of AH_TEMPLATEs at the top of
# the macro for the complete list of possible defines. Shell
# variables $libcurl_feature_xxx and $libcurl_protocol_yyy are also
# defined to 'yes' for those features and protocols that were found.
# Note that xxx and yyy keep the same capitalization as in the
# curl-config list (e.g. it's "HTTP" and not "http").
#
# Users may override the detected values by doing something like:
# LIBCURL="-lcurl" LIBCURL_CPPFLAGS="-I/usr/myinclude" ./configure
#
# For the sake of sanity, this macro assumes that any libcurl that is
# found is after version 7.7.2, the first version that included the
# curl-config script. Note that it is very important for people
# packaging binary versions of libcurl to include this script!
# Without curl-config, we can only guess what protocols are available,
# or use curl_version_info to figure it out at runtime.
AC_DEFUN([LIBCURL_CHECK_CONFIG],
[
AH_TEMPLATE([LIBCURL_FEATURE_SSL],[Defined if libcurl supports SSL])
AH_TEMPLATE([LIBCURL_FEATURE_KRB4],[Defined if libcurl supports KRB4])
AH_TEMPLATE([LIBCURL_FEATURE_IPV6],[Defined if libcurl supports IPv6])
AH_TEMPLATE([LIBCURL_FEATURE_LIBZ],[Defined if libcurl supports libz])
AH_TEMPLATE([LIBCURL_FEATURE_ASYNCHDNS],[Defined if libcurl supports AsynchDNS])
AH_TEMPLATE([LIBCURL_FEATURE_IDN],[Defined if libcurl supports IDN])
AH_TEMPLATE([LIBCURL_FEATURE_SSPI],[Defined if libcurl supports SSPI])
AH_TEMPLATE([LIBCURL_FEATURE_NTLM],[Defined if libcurl supports NTLM])
AH_TEMPLATE([LIBCURL_PROTOCOL_HTTP],[Defined if libcurl supports HTTP])
AH_TEMPLATE([LIBCURL_PROTOCOL_HTTPS],[Defined if libcurl supports HTTPS])
AH_TEMPLATE([LIBCURL_PROTOCOL_FTP],[Defined if libcurl supports FTP])
AH_TEMPLATE([LIBCURL_PROTOCOL_FTPS],[Defined if libcurl supports FTPS])
AH_TEMPLATE([LIBCURL_PROTOCOL_FILE],[Defined if libcurl supports FILE])
AH_TEMPLATE([LIBCURL_PROTOCOL_TELNET],[Defined if libcurl supports TELNET])
AH_TEMPLATE([LIBCURL_PROTOCOL_LDAP],[Defined if libcurl supports LDAP])
AH_TEMPLATE([LIBCURL_PROTOCOL_DICT],[Defined if libcurl supports DICT])
AH_TEMPLATE([LIBCURL_PROTOCOL_TFTP],[Defined if libcurl supports TFTP])
AH_TEMPLATE([LIBCURL_PROTOCOL_RTSP],[Defined if libcurl supports RTSP])
AC_ARG_WITH(libcurl,
AC_HELP_STRING([--with-libcurl=DIR],[look for the curl library in DIR]),
[_libcurl_with=$withval],[_libcurl_with=ifelse([$1],,[yes],[$1])])
if test "$_libcurl_with" != "no" ; then
AC_PROG_AWK
_libcurl_version_parse="eval $AWK '{split(\$NF,A,\".\"); X=256*256*A[[1]]+256*A[[2]]+A[[3]]; print X;}'"
_libcurl_try_link=yes
if test -d "$_libcurl_with" ; then
LIBCURL_CPPFLAGS="-I$withval/include"
_libcurl_ldflags="-L$withval/lib"
AC_PATH_PROG([_libcurl_config],[curl-config],["$withval/bin"],
["$withval/bin"])
else
AC_PATH_PROG([_libcurl_config],[curl-config])
fi
if test x$_libcurl_config != "x" ; then
AC_CACHE_CHECK([for the version of libcurl],
[libcurl_cv_lib_curl_version],
[libcurl_cv_lib_curl_version=`$_libcurl_config --version | $AWK '{print $[]2}'`])
_libcurl_version=`echo $libcurl_cv_lib_curl_version | $_libcurl_version_parse`
_libcurl_wanted=`echo ifelse([$2],,[0],[$2]) | $_libcurl_version_parse`
if test $_libcurl_wanted -gt 0 ; then
AC_CACHE_CHECK([for libcurl >= version $2],
[libcurl_cv_lib_version_ok],
[
if test $_libcurl_version -ge $_libcurl_wanted ; then
libcurl_cv_lib_version_ok=yes
else
libcurl_cv_lib_version_ok=no
fi
])
fi
if test $_libcurl_wanted -eq 0 || test x$libcurl_cv_lib_version_ok = xyes ; then
if test x"$LIBCURL_CPPFLAGS" = "x" ; then
LIBCURL_CPPFLAGS=`$_libcurl_config --cflags`
fi
if test x"$LIBCURL" = "x" ; then
LIBCURL=`$_libcurl_config --libs`
# This is so silly, but Apple actually has a bug in their
# curl-config script. Fixed in Tiger, but there are still
# lots of Panther installs around.
case "${host}" in
powerpc-apple-darwin7*)
LIBCURL=`echo $LIBCURL | sed -e 's|-arch i386||g'`
;;
esac
fi
# All curl-config scripts support --feature
_libcurl_features=`$_libcurl_config --feature`
# Is it modern enough to have --protocols? (7.12.4)
if test $_libcurl_version -ge 461828 ; then
_libcurl_protocols=`$_libcurl_config --protocols`
fi
else
_libcurl_try_link=no
fi
unset _libcurl_wanted
fi
if test $_libcurl_try_link = yes ; then
# we didn't find curl-config, so let's see if the user-supplied
# link line (or failing that, "-lcurl") is enough.
LIBCURL=${LIBCURL-"$_libcurl_ldflags -lcurl"}
AC_CACHE_CHECK([whether libcurl is usable],
[libcurl_cv_lib_curl_usable],
[
_libcurl_save_cppflags=$CPPFLAGS
CPPFLAGS="$LIBCURL_CPPFLAGS $CPPFLAGS"
_libcurl_save_libs=$LIBS
LIBS="$LIBCURL $LIBS"
AC_LINK_IFELSE(AC_LANG_PROGRAM([#include <curl/curl.h>],[
/* Try and use a few common options to force a failure if we are
missing symbols or can't link. */
int x;
curl_easy_setopt(NULL,CURLOPT_URL,NULL);
x=CURL_ERROR_SIZE;
x=CURLOPT_WRITEFUNCTION;
x=CURLOPT_FILE;
x=CURLOPT_ERRORBUFFER;
x=CURLOPT_STDERR;
x=CURLOPT_VERBOSE;
]),libcurl_cv_lib_curl_usable=yes,libcurl_cv_lib_curl_usable=no)
CPPFLAGS=$_libcurl_save_cppflags
LIBS=$_libcurl_save_libs
unset _libcurl_save_cppflags
unset _libcurl_save_libs
])
if test $libcurl_cv_lib_curl_usable = yes ; then
# Does curl_free() exist in this version of libcurl?
# If not, fake it with free()
_libcurl_save_cppflags=$CPPFLAGS
CPPFLAGS="$CPPFLAGS $LIBCURL_CPPFLAGS"
_libcurl_save_libs=$LIBS
LIBS="$LIBS $LIBCURL"
AC_CHECK_FUNC(curl_free,,
AC_DEFINE(curl_free,free,
[Define curl_free() as free() if our version of curl lacks curl_free.]))
CPPFLAGS=$_libcurl_save_cppflags
LIBS=$_libcurl_save_libs
unset _libcurl_save_cppflags
unset _libcurl_save_libs
AC_DEFINE(HAVE_LIBCURL,1,
[Define to 1 if you have a functional curl library.])
AC_SUBST(LIBCURL_CPPFLAGS)
AC_SUBST(LIBCURL)
for _libcurl_feature in $_libcurl_features ; do
AC_DEFINE_UNQUOTED(AS_TR_CPP(libcurl_feature_$_libcurl_feature),[1])
eval AS_TR_SH(libcurl_feature_$_libcurl_feature)=yes
done
if test "x$_libcurl_protocols" = "x" ; then
# We don't have --protocols, so just assume that all
# protocols are available
_libcurl_protocols="HTTP FTP FILE TELNET LDAP DICT TFTP RTSP"
if test x$libcurl_feature_SSL = xyes ; then
_libcurl_protocols="$_libcurl_protocols HTTPS"
# FTPS wasn't standards-compliant until version
# 7.11.0
if test $_libcurl_version -ge 461568; then
_libcurl_protocols="$_libcurl_protocols FTPS"
fi
fi
fi
for _libcurl_protocol in $_libcurl_protocols ; do
AC_DEFINE_UNQUOTED(AS_TR_CPP(libcurl_protocol_$_libcurl_protocol),[1])
eval AS_TR_SH(libcurl_protocol_$_libcurl_protocol)=yes
done
else
unset LIBCURL
unset LIBCURL_CPPFLAGS
fi
fi
unset _libcurl_try_link
unset _libcurl_version_parse
unset _libcurl_config
unset _libcurl_feature
unset _libcurl_features
unset _libcurl_protocol
unset _libcurl_protocols
unset _libcurl_version
unset _libcurl_ldflags
fi
if test x$_libcurl_with = xno || test x$libcurl_cv_lib_curl_usable != xyes ; then
# This is the IF-NO path
ifelse([$4],,:,[$4])
else
# This is the IF-YES path
ifelse([$3],,:,[$3])
fi
unset _libcurl_with
])dnl