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1#***************************************************************************
2#                                  _   _ ____  _
3#  Project                     ___| | | |  _ \| |
4#                             / __| | | | |_) | |
5#                            | (__| |_| |  _ <| |___
6#                             \___|\___/|_| \_\_____|
7#
8# Copyright (C) 1998 - 2021, Daniel Stenberg, <daniel@haxx.se>, et al.
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.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
23AC_DEFUN([CURL_WITH_RUSTLS], [
24dnl ----------------------------------------------------
25dnl check for rustls
26dnl ----------------------------------------------------
27
28if test "x$OPT_RUSTLS" != xno; then
29  _cppflags=$CPPFLAGS
30  _ldflags=$LDFLAGS
31  ssl_msg=
32
33  if test X"$OPT_RUSTLS" != Xno; then
34
35    if test "$OPT_RUSTLS" = "yes"; then
36      OPT_RUSTLS=""
37    fi
38
39    if test -z "$OPT_RUSTLS" ; then
40      dnl check for lib first without setting any new path
41
42      AC_CHECK_LIB(crustls, rustls_client_session_read,
43      dnl libcrustls found, set the variable
44       [
45         AC_DEFINE(USE_RUSTLS, 1, [if rustls is enabled])
46         AC_SUBST(USE_RUSTLS, [1])
47         RUSTLS_ENABLED=1
48         USE_RUSTLS="yes"
49         ssl_msg="rustls"
50	 test rustls != "$DEFAULT_SSL_BACKEND" || VALID_DEFAULT_SSL_BACKEND=yes
51        ], [], -lpthread -ldl)
52    fi
53
54    addld=""
55    addlib="-lpthread"
56    addcflags=""
57    bearssllib=""
58
59    if test "x$USE_RUSTLS" != "xyes"; then
60      dnl add the path and test again
61      addld=-L$OPT_RUSTLS/lib$libsuff
62      addcflags=-I$OPT_RUSTLS/include
63      rustlslib=$OPT_RUSTLS/lib$libsuff
64
65      LDFLAGS="$LDFLAGS $addld"
66      if test "$addcflags" != "-I/usr/include"; then
67         CPPFLAGS="$CPPFLAGS $addcflags"
68      fi
69
70      AC_CHECK_LIB(crustls, rustls_connection_read,
71       [
72       AC_DEFINE(USE_RUSTLS, 1, [if rustls is enabled])
73       AC_SUBST(USE_RUSTLS, [1])
74       RUSTLS_ENABLED=1
75       USE_RUSTLS="yes"
76       ssl_msg="rustls"
77       test rustls != "$DEFAULT_SSL_BACKEND" || VALID_DEFAULT_SSL_BACKEND=yes
78       ],
79       AC_MSG_ERROR([--with-rustls was specified but could not find rustls.]),
80       -lpthread -ldl)
81    fi
82
83    if test "x$USE_RUSTLS" = "xyes"; then
84      AC_MSG_NOTICE([detected rustls])
85      check_for_ca_bundle=1
86
87      LIBS="-lcrustls -lpthread -ldl $LIBS"
88
89      if test -n "$rustlslib"; then
90        dnl when shared libs were found in a path that the run-time
91        dnl linker doesn't search through, we need to add it to
92        dnl CURL_LIBRARY_PATH to prevent further configure tests to fail
93        dnl due to this
94        if test "x$cross_compiling" != "xyes"; then
95          CURL_LIBRARY_PATH="$CURL_LIBRARY_PATH:$rustlslib"
96          export CURL_LIBRARY_PATH
97          AC_MSG_NOTICE([Added $rustlslib to CURL_LIBRARY_PATH])
98        fi
99      fi
100    fi
101
102  fi dnl rustls not disabled
103
104  test -z "$ssl_msg" || ssl_backends="${ssl_backends:+$ssl_backends, }$ssl_msg"
105fi
106])
107