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# This software is copyrighted by the Regents of the University of
# California, Sun Microsystems, Inc., Scriptics Corporation, ActiveState
# Corporation and other parties. The following terms apply to all files
# associated with the software unless explicitly disclaimed in
# individual files.
#
# The authors hereby grant permission to use, copy, modify, distribute,
# and license this software and its documentation for any purpose, provided
# that existing copyright notices are retained in all copies and that this
# notice is included verbatim in any distributions. No written agreement,
# license, or royalty fee is required for any of the authorized uses.
# Modifications to this software may be copyrighted by their authors
# and need not follow the licensing terms described here, provided that
# the new terms are clearly indicated on the first page of each file where
# they apply.
#
# IN NO EVENT SHALL THE AUTHORS OR DISTRIBUTORS BE LIABLE TO ANY PARTY
# FOR DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES
# ARISING OUT OF THE USE OF THIS SOFTWARE, ITS DOCUMENTATION, OR ANY
# DERIVATIVES THEREOF, EVEN IF THE AUTHORS HAVE BEEN ADVISED OF THE
# POSSIBILITY OF SUCH DAMAGE.
#
# THE AUTHORS AND DISTRIBUTORS SPECIFICALLY DISCLAIM ANY WARRANTIES,
# INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY,
# FITNESS FOR A PARTICULAR PURPOSE, AND NON-INFRINGEMENT. THIS SOFTWARE
# IS PROVIDED ON AN "AS IS" BASIS, AND THE AUTHORS AND DISTRIBUTORS HAVE
# NO OBLIGATION TO PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR
# MODIFICATIONS.
#
# GOVERNMENT USE: If you are acquiring this software on behalf of the
# U.S. government, the Government shall have only "Restricted Rights"
# in the software and related documentation as defined in the Federal
# Acquisition Regulations (FARs) in Clause 52.227.19 (c) (2). If you
# are acquiring the software on behalf of the Department of Defense, the
# software shall be classified as "Commercial Computer Software" and the
# Government shall have only "Restricted Rights" as defined in Clause
# 252.227-7013 (c) (1) of DFARs. Notwithstanding the foregoing, the
# authors grant the U.S. Government and others acting in its behalf
# permission to use and distribute the software in accordance with the
# terms specified in this license.
#--------------------------------------------------------------------
# OD_CONFIG_PLUGIN
#
# Try to determine the proper flags to pass to the compiler
# for building plugins.
#
# Arguments:
# none
#
# Results:
#
# Defines and substitutes the following vars:
#
# MAKE_PLUGIN - Command to execute to build a plugin
# INSTALL_PLUGIN - Command to execute to install a plugin
# PLUGIN_CFLAGS - Flags to pass to cc when compiling the components
# of a plugin (may request position-independent
# code, among other things).
# PLUGIN_LD - Base command to use for combining object files
# into a plugin .
# PLUGIN_LD_FLAGS -Flags to pass when building a plugin. This
# differes from the PLUGIN_CFLAGS as it is not used
# when building object files or executables.
# PLUGIN_LD_LIBS - Dependent libraries for the linker to scan when
# creating plugins. This symbol typically
# goes at the end of the "ld" commands that build
# plugins. The value of the symbol is
# "${LIBS}" if all of the dependent libraries should
# be specified when creating a plugin. If
# dependent libraries should not be specified (as on
# SunOS 4.x, where they cause the link to fail, or in
# general if Tcl and Tk aren't themselves shared
# libraries), then this symbol has an empty string
# as its value.
# PLUGIN_SUFFIX - Suffix to use for the names of dynamically loadable
# extensions. An empty string means we don't know how
# to use plugins on this platform.
#--------------------------------------------------------------------
AC_DEFUN(OD_CONFIG_PLUGIN, [
LD_LIBRARY_PATH_VAR="LD_LIBRARY_PATH"
PLAT_OBJS=""
case $host_os in
rhapsody*|darwin*)
PLUGIN_CFLAGS="-fno-common"
PLUGIN_LD="cc -dynamiclib \${LDFLAGS}"
PLUGIN_LD_FLAGS=""
PLUGIN_SUFFIX=".dylib"
;;
*)
# A sensible default
PLUGIN_CFLAGS="-fPIC"
PLUGIN_LD="${CC} -shared"
PLUGIN_LD_FLAGS="${LDFLAGS}"
PLUGIN_SUFFIX=".so"
LDFLAGS="-export-dynamic ${LDFLAGS}"
;;
esac
if test "x$PLUGIN_SUFFIX" = "x" ; then
AC_MSG_ERROR([Can't figure out how to do dynamic loading or plugins on this system.])
fi
PLUGIN_FILE='${PLUGIN_NAME}${PLUGIN_SUFFIX}'
MAKE_PLUGIN='${PLUGIN_LD} -o [$]@ ${PLUGIN_LD_FLAGS} ${PLUGIN_OBJS} ${LIBS}'
INSTALL_PLUGIN='$(INSTALL_LIB) $(PLUGIN_FILE) $(PLUGIN_INSTALL_DIR)/$(PLUGIN_FILE)'
CLEAN_PLUGIN='rm -f ${PLUGIN_FILE}'
AC_SUBST(PLUGIN_LD)
AC_SUBST(PLUGIN_LD_FLAGS)
AC_SUBST(PLUGIN_CFLAGS)
AC_SUBST(PLUGIN_SUFFIX)
AC_SUBST(PLUGIN_FILE)
AC_SUBST(MAKE_PLUGIN)
AC_SUBST(INSTALL_PLUGIN)
AC_SUBST(CLEAN_PLUGIN)
])
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