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# LIBCURL_CHECK_CONFIG ([DEFAULT-ACTION], [MINIMUM-VERSION],
# [ACTION-IF-YES], [ACTION-IF-NO])
# ----------------------------------------------------------
# David Shaw <dshaw@jabberwocky.com> Jan-16-2007
#
# 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])
AC_ARG_WITH(libcurl,
AC_HELP_STRING([--with-libcurl=DIR],[look for the curl library in DIR]),
[_libcurl_with=$withval],[_libcurl_with=m4_if([$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;}'"
# More recent versions of curl-config have a direct --vernum
# option, but we'd like this code to work with older versions as
# well, so just convert --version.
_libcurl_vernum_parse="eval $AWK '{printf \"0x%06X\",\$NF}'"
_libcurl_try_link=yes
if test -d "$_libcurl_with" ; then
LIBCURL_CPPFLAGS="-I$withval/include"
_libcurl_ldflags="-L$withval/lib"
AC_PATH_PROG([_libcurl_config],["$withval/bin/curl-config"])
else
AC_PATH_PROG([_libcurl_config],[curl-config])
fi
if test x$_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 m4_if([$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 $libcurl_cv_lib_curl_usable = yes ; then
_libcurl_save_cppflags=$CPPFLAGS
CPPFLAGS="$CPPFLAGS $LIBCURL_CPPFLAGS"
_libcurl_save_libs=$LIBS
LIBS="$LIBS $LIBCURL"
# Check for some libcurl functions that aren't in all
# versions.
AC_CHECK_FUNCS([curl_free curl_easy_escape curl_easy_unescape])
AH_BOTTOM([
#ifdef HAVE_LIBCURL
/* Define curl_free() via free() if our version of curl lacks
curl_free() */
#if !defined(curl_free) && !defined(HAVE_CURL_FREE)
#define curl_free(a) free((a))
#endif
/* Define curl_easy_escape() via curl_escape() if our version of curl
lacks curl_easy_escape() */
#if !defined(curl_easy_escape) && !defined(HAVE_CURL_EASY_ESCAPE)
#define curl_easy_escape(a,b,c) curl_escape((b),(c))
#endif
/* Define curl_easy_unescape() via curl_unescape() if our version of
curl lacks curl_easy_unescape() */
#if !defined(curl_easy_unescape) && !defined(HAVE_CURL_EASY_UNESCAPE)
#define curl_easy_unescape(a,b,c) curl_unescape((b),(c))
#endif
#endif /* HAVE_LIBCURL */
])
CPPFLAGS=$_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)
_libcurl_vernum=`echo $_libcurl_version | $_libcurl_vernum_parse`
AC_DEFINE_UNQUOTED(LIBCURL_VERNUM,$_libcurl_vernum,[The version of the libcurl library in packed hex form])
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"
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_$_libcurl_protocol)=yes
done
else
unset LIBCURL
unset LIBCURL_CPPFLAGS
fi
fi
unset _libcurl_try_link
unset _libcurl_version_parse
unset _libcurl_config
unset _libcurl_feature
unset _libcurl_features
unset _libcurl_protocol
unset _libcurl_protocols
unset _libcurl_version
unset _libcurl_vernum
unset _libcurl_ldflags
fi
if test x$_libcurl_with = xno || test x$libcurl_cv_lib_curl_usable != xyes ; then
# This is the IF-NO path
m4_if([$4],,:,[$4])
else
# This is the IF-YES path
m4_if([$3],,:,[$3])
fi
unset _libcurl_with
])dnl
|
