1 dnl Autoconf macros for configuring the QuickThreads package
2 dnl Jim Blandy <jimb@red-bean.com> --- July 1998
4 dnl Copyright (C) 1998, 1999 Free Software Foundation, Inc.
6 dnl This file is part of GUILE.
8 dnl GUILE is free software; you can redistribute it and/or modify
9 dnl it under the terms of the GNU General Public License as
10 dnl published by the Free Software Foundation; either version 2, or
11 dnl (at your option) any later version.
13 dnl GUILE is distributed in the hope that it will be useful, but
14 dnl WITHOUT ANY WARRANTY; without even the implied warranty of
15 dnl MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 dnl GNU General Public License for more details.
18 dnl You should have received a copy of the GNU General Public
19 dnl License along with GUILE; see the file COPYING. If not, write
20 dnl to the Free Software Foundation, Inc., 59 Temple Place, Suite
21 dnl 330, Boston, MA 02111-1307 USA
25 dnl QTHREADS_CONFIGURE configures the QuickThreads package. The QT
26 dnl sources should be in $srcdir/qt. If configuration succeeds, this
27 dnl macro creates the appropriate symlinks in the qt object directory,
28 dnl and sets the following variables, used in building libqthreads.a:
29 dnl QTHREAD_LTLIBS --- set to libqthreads.la if configuration
30 dnl succeeds, or the empty string if configuration fails.
31 dnl qtmd_h, qtmds_s, qtmdc_c, qtdmdb_s --- the names of the machine-
32 dnl dependent source files.
33 dnl qthread_asflags --- flags to pass to the compiler when processing
34 dnl assembly-language files.
36 dnl It also sets the following variables, which describe how clients
37 dnl can link against libqthreads.a:
38 dnl THREAD_PACKAGE --- set to "QT" if configuration succeeds, or
39 dnl the empty string if configuration fails.
40 dnl THREAD_LIBS_LOCAL --- linker options for use in this source tree
41 dnl THREAD_LIBS_INSTALLED --- linker options for use after this package
43 dnl It would be nice if all thread configuration packages for Guile
44 dnl followed the same conventions.
46 dnl All of the above variables will be substituted into Makefiles in
47 dnl the usual autoconf fashion.
49 dnl We distinguish between THREAD_LIBS_LOCAL and
50 dnl THREAD_LIBS_INSTALLED because the thread library might be in
51 dnl this tree, and be built using libtool. This means that:
52 dnl 1) when building other executables in this tree, one must
53 dnl pass the relative path to the ../libfoo.la file, but
54 dnl 2) once the whole package has been installed, users should
56 dnl Normally, we only care about the first case, but since the
57 dnl guile-config script needs to give users all the flags they need
58 dnl to link programs against guile, the GUILE_WITH_THREADS macro
59 dnl needs to supply the second piece of information as well.
61 dnl This whole thing is a little confused about what ought to be
62 dnl done in the top-level configure script, and what ought to be
63 dnl taken care of in the subdirectory. For example, qtmds_s and
64 dnl friends really ought not to be even mentioned in the top-level
65 dnl configure script, but here they are.
67 AC_DEFUN([QTHREADS_CONFIGURE],[
68 AC_REQUIRE([AC_PROG_LN_S])
70 AC_MSG_CHECKING(QuickThreads configuration)
72 changequote(,)dnl We use [ and ] in a regexp in the case
85 ## NetBSD needs to be told to pass the assembly code through
86 ## the C preprocessor. Other GCC installations seem to do
87 ## this by default, but NetBSD's doesn't. We could get the
88 ## same effect by giving the file a name ending with .S
89 ## instead of .s, but I don't see how to tell automake to do
91 qthread_asflags='-x assembler-with-cpp'
98 qtmds_s=md/mips-irix5.s
110 port_name=sparc-sunos
114 qtdmdb_s=md/_sparc_b.s
121 qtdmdb_s=md/sparc_b.s
131 echo "Unknown configuration; threads package disabled"
137 # Did configuration succeed?
138 if test -n "$THREAD_PACKAGE"; then
139 AC_MSG_RESULT($port_name)
140 QTHREAD_LTLIBS=libqthreads.la
141 THREAD_LIBS_LOCAL="../qt/libqthreads.la"
142 THREAD_LIBS_INSTALLED="-lqthreads"
144 AC_MSG_RESULT(none; disabled)
147 AC_SUBST(QTHREAD_LTLIBS)
152 AC_SUBST(qthread_asflags)
153 AC_SUBST(THREAD_PACKAGE)
154 AC_SUBST(THREAD_LIBS_LOCAL)
155 AC_SUBST(THREAD_LIBS_INSTALLED)