curl-gnutls.m4 (5495B)
1 #*************************************************************************** 2 # _ _ ____ _ 3 # Project ___| | | | _ \| | 4 # / __| | | | |_) | | 5 # | (__| |_| | _ <| |___ 6 # \___|\___/|_| \_\_____| 7 # 8 # Copyright (C) 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 # SPDX-License-Identifier: curl 22 # 23 #*************************************************************************** 24 25 dnl ---------------------------------------------------- 26 dnl check for GnuTLS 27 dnl ---------------------------------------------------- 28 29 AC_DEFUN([CURL_WITH_GNUTLS], [ 30 if test "x$OPT_GNUTLS" != xno; then 31 ssl_msg= 32 33 if test X"$OPT_GNUTLS" != Xno; then 34 35 addld="" 36 addlib="" 37 gtlslib="" 38 version="" 39 addcflags="" 40 41 if test "x$OPT_GNUTLS" = "xyes"; then 42 dnl this is with no particular path given 43 CURL_CHECK_PKGCONFIG(gnutls) 44 45 if test "$PKGCONFIG" != "no" ; then 46 addlib=`$PKGCONFIG --libs-only-l gnutls` 47 addld=`$PKGCONFIG --libs-only-L gnutls` 48 addcflags=`$PKGCONFIG --cflags-only-I gnutls` 49 version=`$PKGCONFIG --modversion gnutls` 50 gtlslib=`echo $addld | $SED -e 's/^-L//'` 51 else 52 dnl without pkg-config, we try libgnutls-config as that was how it 53 dnl used to be done 54 check=`libgnutls-config --version 2>/dev/null` 55 if test -n "$check"; then 56 addlib=`libgnutls-config --libs` 57 addcflags=`libgnutls-config --cflags` 58 version=`libgnutls-config --version` 59 gtlslib=`libgnutls-config --prefix`/lib$libsuff 60 fi 61 fi 62 else 63 dnl this is with a given path, first check if there's a libgnutls-config 64 dnl there and if not, make an educated guess 65 cfg=$OPT_GNUTLS/bin/libgnutls-config 66 check=`$cfg --version 2>/dev/null` 67 if test -n "$check"; then 68 addlib=`$cfg --libs` 69 addcflags=`$cfg --cflags` 70 version=`$cfg --version` 71 gtlslib=`$cfg --prefix`/lib$libsuff 72 else 73 dnl without pkg-config and libgnutls-config, we guess a lot! 74 addlib=-lgnutls 75 addld=-L$OPT_GNUTLS/lib$libsuff 76 addcflags=-I$OPT_GNUTLS/include 77 version="" # we just don't know 78 gtlslib=$OPT_GNUTLS/lib$libsuff 79 fi 80 fi 81 82 if test -z "$version"; then 83 dnl lots of efforts, still no go 84 version="unknown" 85 fi 86 87 if test -n "$addlib"; then 88 89 CLEANLIBS="$LIBS" 90 CLEANCPPFLAGS="$CPPFLAGS" 91 CLEANLDFLAGS="$LDFLAGS" 92 CLEANLDFLAGSPC="$LDFLAGSPC" 93 94 LIBS="$addlib $LIBS" 95 LDFLAGS="$LDFLAGS $addld" 96 LDFLAGSPC="$LDFLAGSPC $addld" 97 if test "$addcflags" != "-I/usr/include"; then 98 CPPFLAGS="$CPPFLAGS $addcflags" 99 fi 100 101 dnl this function is selected since it was introduced in 3.1.10 102 AC_CHECK_LIB(gnutls, gnutls_x509_crt_get_dn2, 103 [ 104 AC_DEFINE(USE_GNUTLS, 1, [if GnuTLS is enabled]) 105 GNUTLS_ENABLED=1 106 USE_GNUTLS="yes" 107 ssl_msg="GnuTLS" 108 QUIC_ENABLED=yes 109 test gnutls != "$DEFAULT_SSL_BACKEND" || VALID_DEFAULT_SSL_BACKEND=yes 110 ], 111 [ 112 LIBS="$CLEANLIBS" 113 CPPFLAGS="$CLEANCPPFLAGS" 114 ]) 115 116 if test "x$USE_GNUTLS" = "xyes"; then 117 AC_MSG_NOTICE([detected GnuTLS version $version]) 118 check_for_ca_bundle=1 119 if test -n "$gtlslib"; then 120 dnl when shared libs were found in a path that the run-time 121 dnl linker doesn't search through, we need to add it to 122 dnl CURL_LIBRARY_PATH to prevent further configure tests to fail 123 dnl due to this 124 if test "x$cross_compiling" != "xyes"; then 125 CURL_LIBRARY_PATH="$CURL_LIBRARY_PATH:$gtlslib" 126 export CURL_LIBRARY_PATH 127 AC_MSG_NOTICE([Added $gtlslib to CURL_LIBRARY_PATH]) 128 fi 129 fi 130 LIBCURL_PC_REQUIRES_PRIVATE="$LIBCURL_PC_REQUIRES_PRIVATE gnutls nettle" 131 fi 132 133 fi 134 135 fi dnl GNUTLS not disabled 136 137 test -z "$ssl_msg" || ssl_backends="${ssl_backends:+$ssl_backends, }$ssl_msg" 138 fi 139 140 dnl --- 141 dnl Check which crypto backend GnuTLS uses 142 dnl --- 143 144 if test "$GNUTLS_ENABLED" = "1"; then 145 USE_GNUTLS_NETTLE= 146 # First check if we can detect either crypto library via transitive linking 147 AC_CHECK_LIB(gnutls, nettle_MD5Init, [ USE_GNUTLS_NETTLE=1 ]) 148 149 # If not, try linking directly to both of them to see if they are available 150 if test "$USE_GNUTLS_NETTLE" = ""; then 151 AC_CHECK_LIB(nettle, nettle_MD5Init, [ USE_GNUTLS_NETTLE=1 ]) 152 fi 153 if test "$USE_GNUTLS_NETTLE" = ""; then 154 AC_MSG_ERROR([GnuTLS found, but nettle was not found]) 155 fi 156 LIBS="-lnettle $LIBS" 157 fi 158 159 dnl --- 160 dnl We require GnuTLS with SRP support. 161 dnl --- 162 if test "$GNUTLS_ENABLED" = "1"; then 163 AC_CHECK_LIB(gnutls, gnutls_srp_verifier, 164 [ 165 AC_DEFINE(HAVE_GNUTLS_SRP, 1, [if you have the function gnutls_srp_verifier]) 166 HAVE_GNUTLS_SRP=1 167 ]) 168 fi 169 170 ])