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docs/libcurl/libcurl.m4
273 строки
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Viktor Szakats
configure: tidy up comments
11 апр 2026, 00:19
11 апр 2026, 00:19
8a3991e
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#*************************************************************************** # _ _ ____ _ # Project ___| | | | _ \| | # / __| | | | |_) | | # | (__| |_| | _ <| |___ # \___|\___/|_| \_\_____| # # Copyright (C) David Shaw <dshaw@jabberwocky.com> # # This software is licensed as described in the file COPYING, which # you should have received as part of this distribution. The terms # are also available at https://curl.se/docs/copyright.html. # # You may opt to use, copy, modify, merge, publish, distribute and/or sell # copies of the Software, and permit persons to whom the Software is # furnished to do so, under the terms of the COPYING file. # # This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY # KIND, either express or implied. # # SPDX-License-Identifier: curl # #*************************************************************************** # 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_TEMPLATE macros 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 is "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 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]) AH_TEMPLATE([LIBCURL_PROTOCOL_POP3],[Defined if libcurl supports POP3]) AH_TEMPLATE([LIBCURL_PROTOCOL_IMAP],[Defined if libcurl supports IMAP]) AH_TEMPLATE([LIBCURL_PROTOCOL_SMTP],[Defined if libcurl supports SMTP]) AC_ARG_WITH(libcurl, AS_HELP_STRING([--with-libcurl=PREFIX],[look for the curl library in PREFIX/lib and headers in PREFIX/include]), [_libcurl_with=$withval],[_libcurl_with=ifelse([$1],,[yes],[$1])]) if test "x$_libcurl_with" != "xno"; 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],[],["$withval/bin"]) else AC_PATH_PROG([_libcurl_config],[curl-config],[],[$PATH]) fi if test -n "$_libcurl_config"; then AC_CACHE_CHECK([for the version of libcurl], [libcurl_cv_lib_curl_version], [libcurl_cv_lib_curl_version=`$_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 "$libcurl_cv_lib_version_ok" = "yes"; then if test -z "$LIBCURL_CPPFLAGS"; then LIBCURL_CPPFLAGS=`$_libcurl_config --cflags` fi if test -z "$LIBCURL"; then LIBCURL=`$_libcurl_config --libs` dnl This is so silly, but Apple actually has a bug in their dnl curl-config script. Fixed in Tiger, but there are still dnl lots of Panther installs around. case "${host}" in powerpc-apple-darwin7*) LIBCURL=`echo $LIBCURL | sed -e 's|-arch i386||g'` ;; esac fi dnl All curl-config scripts support --feature _libcurl_features=`$_libcurl_config --feature` dnl 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 "$_libcurl_try_link" = "yes"; then dnl we did not find curl-config, so let's see if the user-supplied dnl link line (or failing that, "-lcurl") is enough. LIBCURL=${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 $LIBS" AC_LINK_IFELSE([AC_LANG_PROGRAM([[#include <curl/curl.h>]],[[ /* Try to use a few common options to force a failure if we are missing symbols or cannot link. */ int x; curl_easy_setopt(NULL,CURLOPT_URL,NULL); x=CURL_ERROR_SIZE; x=CURLOPT_WRITEFUNCTION; x=CURLOPT_WRITEDATA; x=CURLOPT_ERRORBUFFER; x=CURLOPT_STDERR; x=CURLOPT_VERBOSE; if(x) {;} ]])],libcurl_cv_lib_curl_usable=yes,libcurl_cv_lib_curl_usable=no) CPPFLAGS=$_libcurl_save_cppflags LIBS=$_libcurl_save_libs unset _libcurl_save_cppflags unset _libcurl_save_libs ]) if test "$libcurl_cv_lib_curl_usable" = "yes"; then dnl Does curl_free() exist in this version of libcurl? dnl If not, fake it with free() _libcurl_save_cppflags=$CPPFLAGS CPPFLAGS="$CPPFLAGS $LIBCURL_CPPFLAGS" _libcurl_save_libs=$LIBS LIBS="$LIBS $LIBCURL" AC_CHECK_DECL([curl_free],[], [AC_DEFINE([curl_free],[free], [Define curl_free() as free() if our version of curl lacks curl_free.])], [[#include <curl/curl.h>]]) CPPFLAGS=$_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_$_libcurl_feature)=yes done if test -z "$_libcurl_protocols"; then dnl We do not have --protocols; assume that all dnl protocols are available _libcurl_protocols="HTTP FTP FILE TELNET LDAP DICT TFTP" if test "$libcurl_feature_SSL" = "yes"; then _libcurl_protocols="$_libcurl_protocols HTTPS" dnl FTPS was not standards-compliant until version dnl 7.11.0 (0x070b00 == 461568) if test "$_libcurl_version" -ge 461568; then _libcurl_protocols="$_libcurl_protocols FTPS" fi fi dnl RTSP, IMAP, POP3 and SMTP were added in dnl 7.20.0 (0x071400 == 463872) if test "$_libcurl_version" -ge 463872; then _libcurl_protocols="$_libcurl_protocols RTSP IMAP POP3 SMTP" 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 "$libcurl_cv_lib_curl_usable" != "yes"; then dnl This is the IF-NO path ifelse([$4],,:,[$4]) else dnl This is the IF-YES path ifelse([$3],,:,[$3]) fi unset _libcurl_with ])