1# $Id: sosuffix.m4,v 12.0 2004/11/17 03:43:38 bostic Exp $ 2# Determine shared object suffixes. 3# 4# Our method is to use the libtool variable $library_names_spec, 5# set by using AC_PROG_LIBTOOL. This variable is a snippet of shell 6# defined in terms of $versuffix, $release, $libname and $module 7# We want to eval it and grab the suffix used for shared objects. 8# By setting $module to yes/no, we obtain the suffixes 9# used to create dlloadable, or java loadable modules. 10# On many (*nix) systems, these all evaluate to .so, but there 11# are some notable exceptions. 12# Before calling this macro, $LIBTOOL_PROG must be set to 13# the correct method of invoking libtool (e.g. $SHELL ./libtool) 14 15# This macro is used internally to discover the suffix for the current 16# settings of $module. The result is stored in $_SOSUFFIX. 17AC_DEFUN(_SOSUFFIX_INTERNAL, [ 18 versuffix="" 19 release="" 20 libname=libfoo 21 eval _SOSUFFIX=\"$shrext_cmds\" 22 if test "$_SOSUFFIX" = "" ; then 23 _SOSUFFIX=".so" 24 if test `$LIBTOOL_PROG --config | grep build_libtool_libs | grep no` 2>/dev/null; then 25 if test "$_SOSUFFIX_MESSAGE" = ""; then 26 _SOSUFFIX_MESSAGE=yes 27 AC_MSG_WARN([libtool may not know about this architecture.]) 28 AC_MSG_WARN([assuming $_SUFFIX suffix for dynamic libraries.]) 29 fi 30 fi 31 fi 32]) 33 34# SOSUFFIX_CONFIG will set the variable SOSUFFIX to be the 35# shared library extension used for general linking, not dlopen. 36AC_DEFUN(SOSUFFIX_CONFIG, [ 37 AC_MSG_CHECKING([SOSUFFIX from libtool]) 38 module=no 39 _SOSUFFIX_INTERNAL 40 SOSUFFIX=$_SOSUFFIX 41 AC_MSG_RESULT($SOSUFFIX) 42 AC_SUBST(SOSUFFIX) 43]) 44 45# MODSUFFIX_CONFIG will set the variable MODSUFFIX to be the 46# shared library extension used for dlopen'ed modules. 47# To discover this, we set $module, simulating libtool's -module option. 48AC_DEFUN(MODSUFFIX_CONFIG, [ 49 AC_MSG_CHECKING([MODSUFFIX from libtool]) 50 module=yes 51 _SOSUFFIX_INTERNAL 52 MODSUFFIX=$_SOSUFFIX 53 AC_MSG_RESULT($MODSUFFIX) 54 AC_SUBST(MODSUFFIX) 55]) 56 57# JMODSUFFIX_CONFIG will set the variable JMODSUFFIX to be the 58# shared library extension used JNI modules opened by Java. 59# To discover this, we set $jnimodule, simulating libtool's -shrext option. 60########################################################################## 61# Robert Boehne: Not much point in this macro any more because apparently 62# Darwin is the only OS that wants or needs the .jnilib extension. 63########################################################################## 64AC_DEFUN(JMODSUFFIX_CONFIG, [ 65 AC_MSG_CHECKING([JMODSUFFIX from libtool]) 66 module=yes 67 _SOSUFFIX_INTERNAL 68 if test `uname` = "Darwin"; then 69 JMODSUFFIX=".jnilib" 70 else 71 JMODSUFFIX=$_SOSUFFIX 72 fi 73 AC_MSG_RESULT($JMODSUFFIX) 74 AC_SUBST(JMODSUFFIX) 75]) 76 77