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dnl Autoconf macros for configuring the QuickThreads package
dnl Jim Blandy <jimb@red-bean.com> --- July 1998
dnl
dnl Copyright (C) 1998, 1999 Free Software Foundation, Inc.
dnl
dnl This file is part of GUILE.
dnl
dnl GUILE is free software; you can redistribute it and/or modify
dnl it under the terms of the GNU General Public License as
dnl published by the Free Software Foundation; either version 2, or
dnl (at your option) any later version.
dnl
dnl GUILE is distributed in the hope that it will be useful, but
dnl WITHOUT ANY WARRANTY; without even the implied warranty of
dnl MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
dnl GNU General Public License for more details.
dnl
dnl You should have received a copy of the GNU General Public
dnl License along with GUILE; see the file COPYING. If not, write
dnl to the Free Software Foundation, Inc., 59 Temple Place, Suite
dnl 330, Boston, MA 02111-1307 USA
dnl QTHREADS_CONFIGURE configures the QuickThreads package. The QT
dnl sources should be in $srcdir/qt. If configuration succeeds, this
dnl macro creates the appropriate symlinks in the qt object directory,
dnl and sets the following variables, used in building libqthreads.a:
dnl QTHREAD_LTLIBS --- set to libqthreads.la if configuration
dnl succeeds, or the empty string if configuration fails.
dnl qtmd_h, qtmds_s, qtmdc_c, qtdmdb_s --- the names of the machine-
dnl dependent source files.
dnl qthread_asflags --- flags to pass to the compiler when processing
dnl assembly-language files.
dnl
dnl It also sets the following variables, which describe how clients
dnl can link against libqthreads.a:
dnl THREAD_PACKAGE --- set to "QT" if configuration succeeds, or
dnl the empty string if configuration fails.
dnl THREAD_LIBS_LOCAL --- linker options for use in this source tree
dnl THREAD_LIBS_INSTALLED --- linker options for use after this package
dnl is installed
dnl It would be nice if all thread configuration packages for Guile
dnl followed the same conventions.
dnl
dnl All of the above variables will be substituted into Makefiles in
dnl the usual autoconf fashion.
dnl
dnl We distinguish between THREAD_LIBS_LOCAL and
dnl THREAD_LIBS_INSTALLED because the thread library might be in
dnl this tree, and be built using libtool. This means that:
dnl 1) when building other executables in this tree, one must
dnl pass the relative path to the ../libfoo.la file, but
dnl 2) once the whole package has been installed, users should
dnl link using -lfoo.
dnl Normally, we only care about the first case, but since the
dnl guile-config script needs to give users all the flags they need
dnl to link programs against guile, the GUILE_WITH_THREADS macro
dnl needs to supply the second piece of information as well.
dnl
dnl This whole thing is a little confused about what ought to be
dnl done in the top-level configure script, and what ought to be
dnl taken care of in the subdirectory. For example, qtmds_s and
dnl friends really ought not to be even mentioned in the top-level
dnl configure script, but here they are.
AC_DEFUN([QTHREADS_CONFIGURE],[
AC_REQUIRE([AC_PROG_LN_S])
AC_MSG_CHECKING(QuickThreads configuration)
changequote(,)dnl We use [ and ] in a regexp in the case
THREAD_PACKAGE=QT
qthread_asflags=''
case "$host" in
i[3456]86-*-*)
port_name=i386
qtmd_h=md/i386.h
qtmds_s=md/i386.s
qtmdc_c=md/null.c
qtdmdb_s=
case "$host" in
*-*-netbsd* )
## NetBSD needs to be told to pass the assembly code through
## the C preprocessor. Other GCC installations seem to do
## this by default, but NetBSD's doesn't. We could get the
## same effect by giving the file a name ending with .S
## instead of .s, but I don't see how to tell automake to do
## that.
qthread_asflags='-x assembler-with-cpp'
;;
esac
;;
mips-sgi-irix[56]*)
port_name=irix
qtmd_h=md/mips.h
qtmds_s=md/mips-irix5.s
qtmdc_c=md/null.c
qtdmdb_s=md/mips_b.s
;;
mips-*-*)
port_name=mips
qtmd_h=md/mips.h
qtmds_s=md/mips.s
qtmdc_c=md/null.c
qtdmdb_s=md/mips_b.s
;;
sparc-*-sunos*)
port_name=sparc-sunos
qtmd_h=md/sparc.h
qtmds_s=md/_sparc.s
qtmdc_c=md/null.c
qtdmdb_s=md/_sparc_b.s
;;
sparc-*-*)
port_name=sparc
qtmd_h=md/sparc.h
qtmds_s=md/sparc.s
qtmdc_c=md/null.c
qtdmdb_s=md/sparc_b.s
;;
alpha*-*-*)
port_name=alpha
qtmd_h=md/axp.h
qtmds_s=md/axp.s
qtmdc_c=md/null.c
qtdmdb_s=md/axp_b.s
;;
*)
echo "Unknown configuration; threads package disabled"
THREAD_PACKAGE=""
;;
esac
changequote([, ])
# Did configuration succeed?
if test -n "$THREAD_PACKAGE"; then
AC_MSG_RESULT($port_name)
QTHREAD_LTLIBS=libqthreads.la
THREAD_LIBS_LOCAL="../qt/libqthreads.la"
THREAD_LIBS_INSTALLED="-lqthreads"
else
AC_MSG_RESULT(none; disabled)
fi
AC_SUBST(QTHREAD_LTLIBS)
AC_SUBST(qtmd_h)
AC_SUBST(qtmds_s)
AC_SUBST(qtmdc_c)
AC_SUBST(qtdmdb_s)
AC_SUBST(qthread_asflags)
AC_SUBST(THREAD_PACKAGE)
AC_SUBST(THREAD_LIBS_LOCAL)
AC_SUBST(THREAD_LIBS_INSTALLED)
])
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