#
# Include the TEA standard macro set
#

builtin(include,tclconfig/tcl.m4)

#
# Add here whatever m4 macros you want to define for your package
#

AC_DEFUN([TCLTLS_SSL_OPENSSL], [
	dnl Determine if pkg-config tool is available
	AC_CHECK_TOOL([PKG_CONFIG], [pkg-config])

	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])
			AC_MSG_CHECKING([for disable TLS1 protocol])

				opensslincludedir=''
			fi
		]
	)
	AC_MSG_CHECKING([for OpenSSL include directory])
	AC_MSG_RESULT($opensslincludedir)

	dnl Set SSL include variables
	if test -n "$opensslincludedir"; then
		AC_MSG_CHECKING([for ssl.h])
		if test -f "$opensslincludedir/openssl/ssl.h"; then
			TCLTLS_SSL_CFLAGS="-I$opensslincludedir"
			TCLTLS_SSL_INCLUDES="-I$opensslincludedir"

			AC_MSG_RESULT([yes])
		else

			AC_MSG_RESULT([no])
			AC_MSG_ERROR([Unable to locate ssl.h])
		fi
	fi

	dnl Set SSL lib files path
	AC_ARG_WITH([openssl-libdir],
		AS_HELP_STRING([--with-openssl-libdir=<dir>],
			[path to lib directory of OpenSSL or LibreSSL installation]
		), [
			openssllibdir="$withval"
		], [
			if test -n "$openssldir"; then
				if test "$do64bit" == 'yes' -a -d $openssldir/lib64; then
					openssllibdir="$openssldir/lib64"
				else
					openssllibdir="$openssldir/lib"
				fi
			else
				openssllibdir=''
			fi
		]
	)
	AC_MSG_CHECKING([for OpenSSL lib directory])
	AC_MSG_RESULT($openssllibdir)

	dnl Set SSL lib variables
	SSL_LIBS_PATH=''
	if test -n "$openssllibdir"; then
		if test "${TCLEXT_TLS_STATIC_SSL}" == 'no'; then
			LIBEXT=${SHLIB_SUFFIX}
		else
			LIBEXT='.a'
		fi

		if test -f "$openssllibdir/libssl${LIBEXT}"; then
			SSL_LIBS_PATH="-L$openssllibdir"
		else
			AC_MSG_ERROR([Unable to locate libssl${LIBEXT}])
		fi
	fi

	dnl Set location of pkgconfig files
	AC_ARG_WITH([openssl-pkgconfig],
		AS_HELP_STRING([--with-openssl-pkgconfig=<dir>],
			[path to pkgconfigdir directory for OpenSSL or LibreSSL]
		), [
			opensslpkgconfigdir="$withval"
		], [
			if test -d ${libdir}/../pkgconfig; then
				opensslpkgconfigdir="$libdir/../pkgconfig"
			else
				opensslpkgconfigdir=''
			fi
		]
	)
	AC_MSG_CHECKING([for OpenSSL pkgconfig])
	AC_MSG_RESULT($opensslpkgconfigdir)

	dnl Check if OpenSSL is available
	USE_PKG_CONFIG=`"${PKG_CONFIG}" --list-package-names | grep openssl`

	dnl Use pkg-config to find the library names
	if test -n "${PKG_CONFIG}" -a -n "${USE_PKG_CONFIG}"; then
		dnl Temporarily update PKG_CONFIG_PATH
		PKG_CONFIG_PATH_SAVE="${PKG_CONFIG_PATH}"
		if test -n "${opensslpkgconfigdir}"; then
			if ! test -f "${opensslpkgconfigdir}/openssl.pc"; then
				AC_MSG_ERROR([Unable to locate ${opensslpkgconfigdir}/openssl.pc])
			fi

		fi
		if test -z "$TCLTLS_SSL_INCLUDES"; then
			TCLTLS_SSL_INCLUDES="`"${PKG_CONFIG}" openssl --cflags-only-I $pkgConfigExtraArgs`" || AC_MSG_ERROR([Unable to get OpenSSL Configuration])
		fi
		PKG_CONFIG_PATH="${PKG_CONFIG_PATH_SAVE}"
	fi

	dnl Use fall-back settings for OpenSSL include and library paths
	if test -z "$TCLTLS_SSL_CFLAGS"; then
		TCLTLS_SSL_CFLAGS=""
	fi
	if test -z "$TCLTLS_SSL_INCLUDES"; then
		if test -f /usr/include/openssl/ssl.h; then
			TCLTLS_SSL_INCLUDES="-I/usr/include"
		fi