dnl XXX:TODO: Automatically determine the SSL library to use
dnl           defaulting to OpenSSL for compatibility reasons
if test "$tcltls_ssl_lib" = 'auto'; then
	tcltls_ssl_lib='openssl'
fi

AC_MSG_CHECKING([which TLS library to use])
AS_CASE([$tcltls_ssl_lib],
	[openssl], [
		AC_MSG_RESULT([openssl])
AC_MSG_RESULT([$tcltls_ssl_lib])

		LIBS="${LIBS} `"${PKGCONFIG}" openssl --libs`" || AC_MSG_ERROR([Unable to get OpenSSL Configuration])
		CFLAGS="${CFLAGS} `"${PKGCONFIG}" openssl --cflags-only-other`" || AC_MSG_ERROR([Unable to get OpenSSL Configuration])
		CPPFLAGS="${CPPFLAGS} `"${PKGCONFIG}" openssl --cflags-only-I`" || AC_MSG_ERROR([Unable to get OpenSSL Configuration])
	],
	[libressl], [
		AC_MSG_RESULT([libressl])

dnl Manually rewrite libressl to OpenSSL since we use the
dnl compatibility interface
if test "$tcltls_ssl_lib" = "libressl"; then
	tcltls_ssl_lib='openssl'
fi

AS_CASE([$tcltls_ssl_lib],
	[openssl], [
		TCLTLS_SSL_OPENSSL
	],
	[nss], [
		AC_MSG_RESULT([nss])
	 	TCLTLS_SSL_LIBS=""
		TCLTLS_SSL_CFLAGS=""
		TCLTLS_SSL_CPPFLAGS=""
	],
	[
		AC_MSG_ERROR([Unsupported SSL library: $tcltls_ssl_lib])
	]
)
dnl Determine how to use this SSL library
AC_MSG_CHECKING([how to use $tcltls_ssl_lib])
LIBS="${LIBS} ${TCLTLS_SSL_LIBS}"
CFLAGS="${CFLAGS} ${TCLTLS_SSL_CFLAGS}"
CPPFLAGS="${CPPFLAGS} ${TCLTLS_SSL_CPPFLAGS}"
AC_MSG_RESULT([$TCLTLS_SSL_CPPFLAGS $TCLTLS_SSL_CFLAGS $TCLTLS_SSL_LIBS])

dnl Produce output
AC_OUTPUT(Makefile pkgIndex.tcl)