diff options
Diffstat (limited to 'm4/curl-gnutls.m4')
| -rw-r--r-- | m4/curl-gnutls.m4 | 165 |
1 files changed, 165 insertions, 0 deletions
diff --git a/m4/curl-gnutls.m4 b/m4/curl-gnutls.m4 new file mode 100644 index 000000000..f0b80abe8 --- /dev/null +++ b/m4/curl-gnutls.m4 @@ -0,0 +1,165 @@ +#*************************************************************************** +# _ _ ____ _ +# Project ___| | | | _ \| | +# / __| | | | |_) | | +# | (__| |_| | _ <| |___ +# \___|\___/|_| \_\_____| +# +# Copyright (C) 1998 - 2021, Daniel Stenberg, <daniel@haxx.se>, et al. +# +# 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. +# +#*************************************************************************** + +dnl ---------------------------------------------------- +dnl check for GnuTLS +dnl ---------------------------------------------------- + +AC_DEFUN([CURL_WITH_GNUTLS], [ +if test "x$OPT_GNUTLS" != xno; then + ssl_msg= + + if test X"$OPT_GNUTLS" != Xno; then + + addld="" + addlib="" + gtlslib="" + version="" + addcflags="" + + if test "x$OPT_GNUTLS" = "xyes"; then + dnl this is with no partiular path given + CURL_CHECK_PKGCONFIG(gnutls) + + if test "$PKGCONFIG" != "no" ; then + addlib=`$PKGCONFIG --libs-only-l gnutls` + addld=`$PKGCONFIG --libs-only-L gnutls` + addcflags=`$PKGCONFIG --cflags-only-I gnutls` + version=`$PKGCONFIG --modversion gnutls` + gtlslib=`echo $addld | $SED -e 's/^-L//'` + else + dnl without pkg-config, we try libgnutls-config as that was how it + dnl used to be done + check=`libgnutls-config --version 2>/dev/null` + if test -n "$check"; then + addlib=`libgnutls-config --libs` + addcflags=`libgnutls-config --cflags` + version=`libgnutls-config --version` + gtlslib=`libgnutls-config --prefix`/lib$libsuff + fi + fi + else + dnl this is with a given path, first check if there's a libgnutls-config + dnl there and if not, make an educated guess + cfg=$OPT_GNUTLS/bin/libgnutls-config + check=`$cfg --version 2>/dev/null` + if test -n "$check"; then + addlib=`$cfg --libs` + addcflags=`$cfg --cflags` + version=`$cfg --version` + gtlslib=`$cfg --prefix`/lib$libsuff + else + dnl without pkg-config and libgnutls-config, we guess a lot! + addlib=-lgnutls + addld=-L$OPT_GNUTLS/lib$libsuff + addcflags=-I$OPT_GNUTLS/include + version="" # we just don't know + gtlslib=$OPT_GNUTLS/lib$libsuff + fi + fi + + if test -z "$version"; then + dnl lots of efforts, still no go + version="unknown" + fi + + if test -n "$addlib"; then + + CLEANLIBS="$LIBS" + CLEANCPPFLAGS="$CPPFLAGS" + CLEANLDFLAGS="$LDFLAGS" + + LIBS="$addlib $LIBS" + LDFLAGS="$LDFLAGS $addld" + if test "$addcflags" != "-I/usr/include"; then + CPPFLAGS="$CPPFLAGS $addcflags" + fi + + dnl this function is selected since it was introduced in 3.1.10 + AC_CHECK_LIB(gnutls, gnutls_x509_crt_get_dn2, + [ + AC_DEFINE(USE_GNUTLS, 1, [if GnuTLS is enabled]) + AC_SUBST(USE_GNUTLS, [1]) + GNUTLS_ENABLED=1 + USE_GNUTLS="yes" + ssl_msg="GnuTLS" + test gnutls != "$DEFAULT_SSL_BACKEND" || VALID_DEFAULT_SSL_BACKEND=yes + ], + [ + LIBS="$CLEANLIBS" + CPPFLAGS="$CLEANCPPFLAGS" + ]) + + if test "x$USE_GNUTLS" = "xyes"; then + AC_MSG_NOTICE([detected GnuTLS version $version]) + check_for_ca_bundle=1 + if test -n "$gtlslib"; then + dnl when shared libs were found in a path that the run-time + dnl linker doesn't search through, we need to add it to + dnl CURL_LIBRARY_PATH to prevent further configure tests to fail + dnl due to this + if test "x$cross_compiling" != "xyes"; then + CURL_LIBRARY_PATH="$CURL_LIBRARY_PATH:$gtlslib" + export CURL_LIBRARY_PATH + AC_MSG_NOTICE([Added $gtlslib to CURL_LIBRARY_PATH]) + fi + fi + fi + + fi + + fi dnl GNUTLS not disabled + + test -z "$ssl_msg" || ssl_backends="${ssl_backends:+$ssl_backends, }$ssl_msg" +fi + +dnl --- +dnl Check which crypto backend GnuTLS uses +dnl --- + +if test "$GNUTLS_ENABLED" = "1"; then + USE_GNUTLS_NETTLE= + # First check if we can detect either crypto library via transitive linking + AC_CHECK_LIB(gnutls, nettle_MD5Init, [ USE_GNUTLS_NETTLE=1 ]) + + # If not, try linking directly to both of them to see if they are available + if test "$USE_GNUTLS_NETTLE" = ""; then + AC_CHECK_LIB(nettle, nettle_MD5Init, [ USE_GNUTLS_NETTLE=1 ]) + fi + if test "$USE_GNUTLS_NETTLE" = ""; then + AC_MSG_ERROR([GnuTLS found, but nettle was not found]) + fi + LIBS="-lnettle $LIBS" +fi + +dnl --- +dnl We require GnuTLS with SRP support. +dnl --- +if test "$GNUTLS_ENABLED" = "1"; then + AC_CHECK_LIB(gnutls, gnutls_srp_verifier, + [ + AC_DEFINE(HAVE_GNUTLS_SRP, 1, [if you have the function gnutls_srp_verifier]) + AC_SUBST(HAVE_GNUTLS_SRP, [1]) + ]) +fi + +]) |