dnl $1 = Name of variable
dnl $2 = Name of function to check for
dnl $3 = Name of protocol
dnl $4 = Name of CPP macro to define
AC_DEFUN([TCLTLS_SSL_OPENSSL_CHECK_PROTO_VER], [
dnl Determine if particular SSL version is enabled
if test "[$]$1" = "true" -o "[$]$1" = "force"; then
AC_CHECK_FUNC($2,, [
if test "[$]$1" = "force"; then
AC_MSG_ERROR([Unable to enable $3])
fi
$1='false'
])
fi
if test "[$]$1" = "false"; then
AC_DEFINE($4, [1], [Define this to disable $3 in OpenSSL support])
fi
])
AC_DEFUN([TCLTLS_SSL_OPENSSL], [
openssldir=''
AC_ARG_WITH([ssl-dir],
AS_HELP_STRING(
[--with-ssl-dir=<dir>],
[deprecated, use --with-openssl-dir -- currently has the same meaning]
), [
openssldir="$withval"
]
)
AC_ARG_WITH([openssl-dir],
AS_HELP_STRING(
[--with-openssl-dir=<dir>],
[path to root directory of OpenSSL or LibreSSL installation]
), [
openssldir="$withval"
]
)
if test -n "$openssldir"; then
if test -e "$openssldir/libssl.$SHOBJEXT"; then
TCLTLS_SSL_LIBS="-L$openssldir -lssl -lcrypto"
openssldir="`AS_DIRNAME(["$openssldir"])`"
else
TCLTLS_SSL_LIBS="-L$openssldir/lib -lssl -lcrypto"
fi
TCLTLS_SSL_CFLAGS="-I$openssldir/include"
TCLTLS_SSL_CPPFLAGS="-I$openssldir/include"
fi
pkgConfigExtraArgs=''
if test "$TCLEXT_BUILD" = "static" -o "$TCLEXT_TLS_STATIC_SSL" = 'yes'; then
pkgConfigExtraArgs='--static'
fi
dnl Use pkg-config to find the libraries
AC_ARG_VAR([TCLTLS_SSL_LIBS], [libraries to pass to the linker for OpenSSL or LibreSSL])
AC_ARG_VAR([TCLTLS_SSL_CFLAGS], [C compiler flags for OpenSSL or LibreSSL])
AC_ARG_VAR([TCLTLS_SSL_CPPFLAGS], [C preprocessor flags for OpenSSL or LibreSSL])
if test -z "$TCLTLS_SSL_LIBS"; then
TCLTLS_SSL_LIBS="`"${PKGCONFIG}" openssl --libs $pkgConfigExtraArgs`" || AC_MSG_ERROR([Unable to get OpenSSL Configuration])
fi
if test -z "$TCLTLS_SSL_CFLAGS"; then
TCLTLS_SSL_CFLAGS="`"${PKGCONFIG}" openssl --cflags-only-other $pkgConfigExtraArgs`" || AC_MSG_ERROR([Unable to get OpenSSL Configuration])
fi
if test -z "$TCLTLS_SSL_CPPFLAGS"; then
TCLTLS_SSL_CPPFLAGS="`"${PKGCONFIG}" openssl --cflags-only-I $pkgConfigExtraArgs`" || AC_MSG_ERROR([Unable to get OpenSSL Configuration])
fi
if test "$TCLEXT_BUILD" = "static"; then
dnl If we are doing a static build, save the linker flags for other programs to consume
rm -f tcltls.a.linkadd
AS_ECHO(["$TCLTLS_SSL_LIBS"]) > tcltls.a.linkadd
fi
dnl If we have been asked to statically link to the SSL library, specifically tell the linker to do so
if test "$TCLEXT_TLS_STATIC_SSL" = 'yes'; then
dnl Don't bother doing this if we aren't actually doing the runtime linking
if test "$TCLEXT_BUILD" != "static"; then
dnl Split the libraries into SSL and non-SSL libraries
new_TCLTLS_SSL_LIBS_normal=''
new_TCLTLS_SSL_LIBS_static=''
for arg in $TCLTLS_SSL_LIBS; do
case "${arg}" in
-L*)
new_TCLTLS_SSL_LIBS_normal="${new_TCLTLS_SSL_LIBS_normal} ${arg}"
new_TCLTLS_SSL_LIBS_static="${new_TCLTLS_SSL_LIBS_static} ${arg}"
;;
-ldl|-lrt|-lc|-lpthread|-lm|-lcrypt|-lidn|-lresolv|-lgcc|-lgcc_s)
new_TCLTLS_SSL_LIBS_normal="${new_TCLTLS_SSL_LIBS_normal} ${arg}"
;;
-l*)
new_TCLTLS_SSL_LIBS_static="${new_TCLTLS_SSL_LIBS_static} ${arg}"
;;
*)
new_TCLTLS_SSL_LIBS_normal="${new_TCLTLS_SSL_LIBS_normal} ${arg}"
;;
esac
done
SHOBJ_DO_STATIC_LINK_LIB([OpenSSL], [$new_TCLTLS_SSL_LIBS_static], [new_TCLTLS_SSL_LIBS_static])
TCLTLS_SSL_LIBS="${new_TCLTLS_SSL_LIBS_normal} ${new_TCLTLS_SSL_LIBS_static}"
fi
fi
dnl Save compile-altering variables we are changing
SAVE_LIBS="${LIBS}"
SAVE_CFLAGS="${CFLAGS}"
SAVE_CPPFLAGS="${CPPFLAGS}"
dnl Update compile-altering variables to include the OpenSSL libraries
LIBS="${SAVE_LIBS} ${TCLTLS_SSL_LIBS}"
CFLAGS="${SAVE_CFLAGS} ${TCLTLS_SSL_CFLAGS}"
CPPFLAGS="${SAVE_CPPFLAGS} ${TCLTLS_SSL_CPPFLAGS}"
dnl Verify that basic functionality is there
AC_LANG_PUSH(C)
AC_MSG_CHECKING([if a basic OpenSSL program works])
AC_LINK_IFELSE([AC_LANG_PROGRAM([
#include <openssl/ssl.h>
#if (SSLEAY_VERSION_NUMBER >= 0x0907000L)
# include <openssl/conf.h>
#endif
], [
(void)SSL_library_init();
SSL_load_error_strings();
OPENSSL_config(NULL);
])], [
AC_MSG_RESULT([yes])
], [
AC_MSG_RESULT([no])
AC_MSG_ERROR([Unable to compile a basic program using OpenSSL])
])
AC_LANG_POP([C])
TCLTLS_SSL_OPENSSL_CHECK_PROTO_VER([tcltls_ssl_ssl2], [SSLv2_method], [sslv2], [NO_SSL2])
TCLTLS_SSL_OPENSSL_CHECK_PROTO_VER([tcltls_ssl_ssl3], [SSLv3_method], [sslv3], [NO_SSL3])
TCLTLS_SSL_OPENSSL_CHECK_PROTO_VER([tcltls_ssl_tls1_0], [TLSv1_method], [tlsv1.0], [NO_TLS1])
TCLTLS_SSL_OPENSSL_CHECK_PROTO_VER([tcltls_ssl_tls1_1], [TLSv1_1_method], [tlsv1.1], [NO_TLS1_1])
TCLTLS_SSL_OPENSSL_CHECK_PROTO_VER([tcltls_ssl_tls1_2], [TLSv1_2_method], [tlsv1.2], [NO_TLS1_2])
AC_CACHE_VAL([tcltls_cv_func_tlsext_hostname], [
AC_LANG_PUSH(C)
AC_MSG_CHECKING([for SSL_set_tlsext_host_name])
AC_LINK_IFELSE([AC_LANG_PROGRAM([
#include <openssl/ssl.h>
#if (SSLEAY_VERSION_NUMBER >= 0x0907000L)
# include <openssl/conf.h>
#endif
], [
(void)SSL_set_tlsext_host_name((void *) 0, (void *) 0);
])], [
AC_MSG_RESULT([yes])
tcltls_cv_func_tlsext_hostname='yes'
], [
AC_MSG_RESULT([no])
tcltls_cv_func_tlsext_hostname='no'
])
AC_LANG_POP([C])
])
if test "$tcltls_cv_func_tlsext_hostname" = 'no'; then
AC_DEFINE([OPENSSL_NO_TLSEXT], [1], [Define this if your OpenSSL does not support the TLS Extension for SNI])
fi
dnl Restore compile-altering variables
LIBS="${SAVE_LIBS}"
CFLAGS="${SAVE_CFLAGS}"
CPPFLAGS="${SAVE_CPPFLAGS}"
])