#--------------------------------------------------------------------
# Setup a *Config.sh.in configuration file.
#--------------------------------------------------------------------

#TEA_EXPORT_CONFIG([tls])
#AC_SUBST(SAMPLE_VAR)


#--------------------------------------------------------------------
# Custom
#--------------------------------------------------------------------

dnl Disable support for TLS 1.0 protocol
AC_ARG_ENABLE([tls1], AS_HELP_STRING([--disable-tls1], [disable TLS1 protocol]), [
	if test "${enableval}" = "no"; then
		AC_DEFINE([NO_TLS1], [1], [Disable TLS1 protocol])
	fi
])

dnl Disable support for TLS 1.1 protocol
AC_ARG_ENABLE([tls1_1], AS_HELP_STRING([--disable-tls1_1], [disable TLS1.1 protocol]), [
	if test "${enableval}" = "no"; then
		AC_DEFINE([NO_TLS1_1], [1], [Disable TLS1.1 protocol])
	fi
])

dnl Disable support for TLS 1.2 protocol
AC_ARG_ENABLE([tls1_2], AS_HELP_STRING([--disable-tls1_2], [disable TLS1.2 protocol]), [
	if test "${enableval}" = "no"; then
		AC_DEFINE([NO_TLS1_2], [1], [Disable TLS1.2 protocol])
	fi
])

dnl Disable support for TLS 1.3 protocol
AC_ARG_ENABLE([tls1_3], AS_HELP_STRING([--disable-tls1_3], [disable TLS1.3 protocol]), [
	if test "${enableval}" = "no"; then
		AC_DEFINE([NO_TLS1_3], [1], [Disable TLS1.3 protocol])
	fi
])

dnl Enable support for building the same library every time
tcltls_deterministic='false'
AC_ARG_ENABLE([deterministic], AS_HELP_STRING([--enable-deterministic], [enable deterministic DH parameters]), [
	if test "$enableval" = "yes"; then
		tcltls_deterministic='true'
	fi
])
if test "$tcltls_deterministic" = 'true'; then
	GEN_DH_PARAMS_ARGS='fallback'
else
	GEN_DH_PARAMS_ARGS=''
fi


dnl Enable support for specifying pre-computed DH params size
AC_ARG_WITH([builtin-dh-params-size], AS_HELP_STRING([--with-builtin-dh-params-size=<bits>], [specify the size of the built-in, precomputed, DH params]), [
	AS_CASE([$withval],[2048|4096|8192],,[AC_MSG_ERROR([Unsupported DH params size: $withval])])
	GEN_DH_PARAMS_ARGS="${GEN_DH_PARAMS_ARGS} bits=$withval"
])
AC_SUBST(GEN_DH_PARAMS_ARGS)


dnl Determine if we have been asked to use a fast path if possible
tcltls_ssl_fastpath='no'
AC_ARG_ENABLE([ssl-fastpath], AS_HELP_STRING([--enable-ssl-fastpath], [enable using the underlying file descriptor for talking directly to the SSL library]), [
	if test "$enableval" = 'yes'; then
		tcltls_ssl_fastpath='yes'
	else
		tcltls_ssl_fastpath='no'
	fi
])

if test "$tcltls_ssl_fastpath" = 'yes'; then
	AC_DEFINE(TCLTLS_SSL_USE_FASTPATH, [1], [Define this to enable using the underlying file descriptor for talking directly to the SSL library])
fi


dnl Determine if we have been asked to statically link to the SSL library
TCLEXT_TLS_STATIC_SSL='no'
AC_ARG_ENABLE([static-ssl], AS_HELP_STRING([--enable-static-ssl], [enable statically linking to the specified SSL library]), [
	if test "$enableval" = 'yes'; then
		TCLEXT_TLS_STATIC_SSL='yes'
	fi
])


dnl Enable hardening
tcltls_enable_hardening='auto'
AC_ARG_ENABLE([hardening], AS_HELP_STRING([--disable-hardening], [disable hardening attempts]), [
	tcltls_enable_hardening="$enableval"
])
if test "$tcltls_enable_hardening" = 'auto'; then
	tcltls_enable_hardening='true'
	if test "$TCLEXT_BUILD" = 'static'; then
		tcltls_enable_hardening='false'
	fi
elif test "$tcltls_enable_hardening" = 'yes'; then
	tcltls_enable_hardening='true'
else
	tcltls_enable_hardening='false'
fi
if test "$tcltls_enable_hardening" = 'true'; then
	AX_CHECK_COMPILE_FLAG([-fstack-protector-all], [CFLAGS="$CFLAGS -fstack-protector-all"])
	AX_CHECK_COMPILE_FLAG([-fno-strict-overflow], [CFLAGS="$CFLAGS -fno-strict-overflow"])
	AC_DEFINE([_FORTIFY_SOURCE], [2], [Enable fortification])
fi


#--------------------------------------------------------------------
# Specify files to substitute AC variables in. You may alternatively
# have a special pkgIndex.tcl.in or other files which require
# substituting the AC variables in. Include these here.
#--------------------------------------------------------------------