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168
third_party/curl/m4/curl-gnutls.m4
vendored
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168
third_party/curl/m4/curl-gnutls.m4
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#***************************************************************************
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# _ _ ____ _
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# Project ___| | | | _ \| |
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# / __| | | | |_) | |
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# | (__| |_| | _ <| |___
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# \___|\___/|_| \_\_____|
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#
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# Copyright (C) Daniel Stenberg, <daniel@haxx.se>, et al.
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#
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# This software is licensed as described in the file COPYING, which
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# you should have received as part of this distribution. The terms
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# are also available at https://curl.se/docs/copyright.html.
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#
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# You may opt to use, copy, modify, merge, publish, distribute and/or sell
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# copies of the Software, and permit persons to whom the Software is
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# furnished to do so, under the terms of the COPYING file.
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#
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# This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
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# KIND, either express or implied.
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#
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# SPDX-License-Identifier: curl
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#
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#***************************************************************************
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dnl ----------------------------------------------------
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dnl check for GnuTLS
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dnl ----------------------------------------------------
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AC_DEFUN([CURL_WITH_GNUTLS], [
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if test "x$OPT_GNUTLS" != xno; then
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ssl_msg=
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if test X"$OPT_GNUTLS" != Xno; then
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addld=""
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addlib=""
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gtlslib=""
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version=""
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addcflags=""
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if test "x$OPT_GNUTLS" = "xyes"; then
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dnl this is with no particular path given
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CURL_CHECK_PKGCONFIG(gnutls)
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if test "$PKGCONFIG" != "no" ; then
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addlib=`$PKGCONFIG --libs-only-l gnutls`
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addld=`$PKGCONFIG --libs-only-L gnutls`
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addcflags=`$PKGCONFIG --cflags-only-I gnutls`
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version=`$PKGCONFIG --modversion gnutls`
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gtlslib=`echo $addld | $SED -e 's/^-L//'`
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else
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dnl without pkg-config, we try libgnutls-config as that was how it
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dnl used to be done
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check=`libgnutls-config --version 2>/dev/null`
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if test -n "$check"; then
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addlib=`libgnutls-config --libs`
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addcflags=`libgnutls-config --cflags`
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version=`libgnutls-config --version`
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gtlslib=`libgnutls-config --prefix`/lib$libsuff
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fi
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fi
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else
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dnl this is with a given path, first check if there's a libgnutls-config
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dnl there and if not, make an educated guess
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cfg=$OPT_GNUTLS/bin/libgnutls-config
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check=`$cfg --version 2>/dev/null`
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if test -n "$check"; then
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addlib=`$cfg --libs`
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addcflags=`$cfg --cflags`
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version=`$cfg --version`
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gtlslib=`$cfg --prefix`/lib$libsuff
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else
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dnl without pkg-config and libgnutls-config, we guess a lot!
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addlib=-lgnutls
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addld=-L$OPT_GNUTLS/lib$libsuff
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addcflags=-I$OPT_GNUTLS/include
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version="" # we just don't know
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gtlslib=$OPT_GNUTLS/lib$libsuff
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fi
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fi
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if test -z "$version"; then
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dnl lots of efforts, still no go
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version="unknown"
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fi
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if test -n "$addlib"; then
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CLEANLIBS="$LIBS"
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CLEANCPPFLAGS="$CPPFLAGS"
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CLEANLDFLAGS="$LDFLAGS"
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LIBS="$addlib $LIBS"
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LDFLAGS="$LDFLAGS $addld"
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if test "$addcflags" != "-I/usr/include"; then
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CPPFLAGS="$CPPFLAGS $addcflags"
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fi
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dnl this function is selected since it was introduced in 3.1.10
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AC_CHECK_LIB(gnutls, gnutls_x509_crt_get_dn2,
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[
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AC_DEFINE(USE_GNUTLS, 1, [if GnuTLS is enabled])
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AC_SUBST(USE_GNUTLS, [1])
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GNUTLS_ENABLED=1
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USE_GNUTLS="yes"
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ssl_msg="GnuTLS"
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QUIC_ENABLED=yes
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test gnutls != "$DEFAULT_SSL_BACKEND" || VALID_DEFAULT_SSL_BACKEND=yes
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],
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[
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LIBS="$CLEANLIBS"
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CPPFLAGS="$CLEANCPPFLAGS"
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])
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if test "x$USE_GNUTLS" = "xyes"; then
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AC_MSG_NOTICE([detected GnuTLS version $version])
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check_for_ca_bundle=1
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if test -n "$gtlslib"; then
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dnl when shared libs were found in a path that the run-time
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dnl linker doesn't search through, we need to add it to
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dnl CURL_LIBRARY_PATH to prevent further configure tests to fail
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dnl due to this
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if test "x$cross_compiling" != "xyes"; then
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CURL_LIBRARY_PATH="$CURL_LIBRARY_PATH:$gtlslib"
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export CURL_LIBRARY_PATH
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AC_MSG_NOTICE([Added $gtlslib to CURL_LIBRARY_PATH])
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fi
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fi
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fi
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fi
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fi dnl GNUTLS not disabled
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test -z "$ssl_msg" || ssl_backends="${ssl_backends:+$ssl_backends, }$ssl_msg"
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fi
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dnl ---
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dnl Check which crypto backend GnuTLS uses
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dnl ---
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if test "$GNUTLS_ENABLED" = "1"; then
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USE_GNUTLS_NETTLE=
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# First check if we can detect either crypto library via transitive linking
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AC_CHECK_LIB(gnutls, nettle_MD5Init, [ USE_GNUTLS_NETTLE=1 ])
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# If not, try linking directly to both of them to see if they are available
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if test "$USE_GNUTLS_NETTLE" = ""; then
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AC_CHECK_LIB(nettle, nettle_MD5Init, [ USE_GNUTLS_NETTLE=1 ])
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fi
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if test "$USE_GNUTLS_NETTLE" = ""; then
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AC_MSG_ERROR([GnuTLS found, but nettle was not found])
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fi
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LIBS="-lnettle $LIBS"
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fi
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dnl ---
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dnl We require GnuTLS with SRP support.
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dnl ---
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if test "$GNUTLS_ENABLED" = "1"; then
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AC_CHECK_LIB(gnutls, gnutls_srp_verifier,
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[
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AC_DEFINE(HAVE_GNUTLS_SRP, 1, [if you have the function gnutls_srp_verifier])
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AC_SUBST(HAVE_GNUTLS_SRP, [1])
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])
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fi
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])
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