@EXTENSION_TARGET@: @TCLEXT_BUILD@-@EXTENSION_TARGET@
	mv @TCLEXT_BUILD@-@EXTENSION_TARGET@ @EXTENSION_TARGET@

# The shared object target
shared-@EXTENSION_TARGET@: tls.o tlsBIO.o tlsIO.o tlsX509.o Makefile
	$(CC) $(CPPFLAGS) $(CFLAGS) $(LDFLAGS) -o shared-@EXTENSION_TARGET@ tls.o tlsBIO.o tlsIO.o tlsX509.o $(LIBS)
	-@WEAKENSYMS@ shared-@EXTENSION_TARGET@
	-@REMOVESYMS@ shared-@EXTENSION_TARGET@

# The static target
static-@EXTENSION_TARGET@: tls.o tlsBIO.o tlsIO.o tlsX509.o Makefile
	$(AR) rcu static-@EXTENSION_TARGET@ tls.o tlsBIO.o tlsIO.o tlsX509.o
	-$(RANLIB) static-@EXTENSION_TARGET@

# Dependencies for all our targets

# ===========================================================================
#   http://www.gnu.org/software/autoconf-archive/ax_check_compile_flag.html
#  https://www.gnu.org/software/autoconf-archive/ax_check_compile_flag.html
# ===========================================================================
#
# SYNOPSIS
#
#   AX_CHECK_COMPILE_FLAG(FLAG, [ACTION-SUCCESS], [ACTION-FAILURE], [EXTRA-FLAGS], [INPUT])
#
# DESCRIPTION

#   macro in sync with AX_CHECK_{PREPROC,LINK}_FLAG.
#
# LICENSE
#
#   Copyright (c) 2008 Guido U. Draheim <[email protected]>
#   Copyright (c) 2011 Maarten Bosmans <[email protected]>
#
#   This program is free software: you can redistribute it and/or modify it
#   under the terms of the GNU General Public License as published by the
#   Free Software Foundation, either version 3 of the License, or (at your
#   option) any later version.
#
#   This program is distributed in the hope that it will be useful, but
#   WITHOUT ANY WARRANTY; without even the implied warranty of
#   Copying and distribution of this file, with or without modification, are
#   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General
#   Public License for more details.
#
#   You should have received a copy of the GNU General Public License along
#   with this program. If not, see <http://www.gnu.org/licenses/>.
#
#   As a special exception, the respective Autoconf Macro's copyright owner
#   permitted in any medium without royalty provided the copyright notice
#   gives unlimited permission to copy, distribute and modify the configure
#   scripts that are the output of Autoconf when processing the Macro. You
#   need not follow the terms of the GNU General Public License when using
#   or distributing such scripts, even though portions of the text of the
#   Macro appear in them. The GNU General Public License (GPL) does govern
#   all other use of the material that constitutes the Autoconf Macro.
#
#   This special exception to the GPL applies to versions of the Autoconf
#   Macro released by the Autoconf Archive. When you make and distribute a
#   modified version of the Autoconf Macro, you may extend this special
#   exception to the GPL to apply to your modified version as well.
#   and this notice are preserved.  This file is offered as-is, without any
#   warranty.

#serial 4
#serial 6

AC_DEFUN([AX_CHECK_COMPILE_FLAG],
[AC_PREREQ(2.64)dnl for _AC_LANG_PREFIX and AS_VAR_IF
AS_VAR_PUSHDEF([CACHEVAR],[ax_cv_check_[]_AC_LANG_ABBREV[]flags_$4_$1])dnl
AC_CACHE_CHECK([whether _AC_LANG compiler accepts $1], CACHEVAR, [
  ax_check_save_flags=$[]_AC_LANG_PREFIX[]FLAGS
  _AC_LANG_PREFIX[]FLAGS="$[]_AC_LANG_PREFIX[]FLAGS $4 $1"

			AC_LANG_POP(C)
			unset tryrpath
		])

		LDFLAGS="$OLD_LDFLAGS"
		unset OLD_LDFLAGS

		if test -n "$rsk_cv_link_set_rpath"; then
		ADDLDFLAGS=""
		for opt in $LDFLAGS $LIBS; do
			if echo "$opt" | grep '^-L' >/dev/null; then
				rpathdir="`echo "$opt" | sed 's@^-L *@@'`"
				ADDLDFLAGS="$ADDLDFLAGS $rsk_cv_link_set_rpath -Wl,$rpathdir"
			fi
		done
		unset opt
			ADDLDFLAGS=""
			for opt in $LDFLAGS $LIBS; do
				if echo "$opt" | grep '^-L' >/dev/null; then
					rpathdir="`echo "$opt" | sed 's@^-L *@@'`"
					ADDLDFLAGS="$ADDLDFLAGS $rsk_cv_link_set_rpath -Wl,$rpathdir"
				fi
			done
			unset opt

		LDFLAGS="$LDFLAGS $ADDLDFLAGS"
			LDFLAGS="$LDFLAGS $ADDLDFLAGS"

		unset ADDLDFLAGS
			unset ADDLDFLAGS
		fi
	fi
])

AC_DEFUN([DC_CHK_OS_INFO], [
	AC_CANONICAL_HOST
	AC_SUBST(SHOBJEXT)
	AC_SUBST(SHOBJFLAGS)

					*)
						SHOBJEXT="sl"
						;;
				esac
				;;
			mingw32|mingw32msvc*)
				SHOBJEXT="dll"
				AREXT='lib'
				CFLAGS="$CFLAGS -mms-bitfields"
				CPPFLAGS="$CPPFLAGS -mms-bitfields"
				SHOBJCPPFLAGS="-DPIC"
				SHOBJLDFLAGS='-shared -Wl,--dll -Wl,--enable-auto-image-base -Wl,--output-def,$[@].def,--out-implib,$[@].a'
				;;
			msvc)
				SHOBJEXT="dll"

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

	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
		rm -f tcltls.${AREXT}.linkadd
		AS_ECHO(["$TCLTLS_SSL_LIBS"]) > tcltls.${AREXT}.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

dnl Define ourselves
AC_INIT(tcltls, 1.7.18)
AC_INIT(tcltls, 1.7.19)

dnl Checks for programs.
AC_PROG_CC
AC_PROG_MAKE_SET
AC_PROG_INSTALL
AC_GNU_SOURCE

AX_CHECK_COMPILE_FLAG([-Wall], [CFLAGS="$CFLAGS -Wall"])
AX_CHECK_COMPILE_FLAG([-W], [
	CFLAGS="$CFLAGS -W"
	AX_CHECK_COMPILE_FLAG([-Wno-self-assign], [CFLAGS="$CFLAGS -Wno-self-assign"])
])

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="$CFLAGS -fno-strict-overflow"])
AC_DEFINE([_FORTIFY_SOURCE], [2], [Enable fortification])
	AX_CHECK_COMPILE_FLAG([-fstack-protector-all], [CFLAGS="$CFLAGS -fstack-protector-all"])
	AX_CHECK_COMPILE_FLAG([-fno-strict-overflow], [CFLAGS="$CFLAGS -fno-strict-overflow"])
	AC_DEFINE([_FORTIFY_SOURCE], [2], [Enable fortification])
fi

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

if test "$TCLEXT_BUILD" != 'static'; then
	if test "$TCLEXT_TLS_STATIC_SSL" = 'yes'; then
		DC_SYNC_RPATH([no])
	else
		DC_SYNC_RPATH([yes])
	fi
fi

dnl Enable a stable ABI
DC_SETUP_STABLE_API([${srcdir}/tcltls.vers], tcltls.syms)
if test "$tcltls_debug" = 'true'; then
	WEAKENSYMS=':'
	REMOVESYMS=':'
fi

dnl Produce output
AC_OUTPUT(Makefile pkgIndex.tcl)
AC_OUTPUT(Makefile pkgIndex.tcl tcltls.syms)