OpenCores
URL https://opencores.org/ocsvn/openrisc/openrisc/trunk

Subversion Repositories openrisc

[/] [openrisc/] [trunk/] [rtos/] [ecos-2.0/] [configure.in] - Blame information for rev 577

Go to most recent revision | Details | Compare with Previous | View Log

Line No. Rev Author Line
1 25 unneback
dnl Process this file with autoconf to produce a configure script.
2
dnl ====================================================================
3
dnl
4
dnl     configure.in
5
dnl
6
dnl     Top-level configure script for eCos software.
7
dnl
8
dnl ====================================================================
9
dnl ####ECOSHOSTGPLCOPYRIGHTBEGIN####
10
dnl ----------------------------------------------------------------------------
11
dnl Copyright (C) 2002, 2003 Bart Veer
12
dnl Copyright (C) 1998, 1999, 2000, 2001 Red Hat, Inc.
13
dnl
14
dnl This file is part of the eCos host tools.
15
dnl
16
dnl This program is free software; you can redistribute it and/or modify it
17
dnl under the terms of the GNU General Public License as published by the Free
18
dnl Software Foundation; either version 2 of the License, or (at your option)
19
dnl any later version.
20
dnl
21
dnl This program is distributed in the hope that it will be useful, but WITHOUT
22
dnl ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
23
dnl FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
24
dnl more details.
25
dnl
26
dnl You should have received a copy of the GNU General Public License along with
27
dnl this program; if not, write to the Free Software Foundation, Inc.,
28
dnl 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
29
dnl ----------------------------------------------------------------------------
30
dnl ####ECOSHOSTGPLCOPYRIGHTEND####
31
dnl ====================================================================
32
dnl#####DESCRIPTIONBEGIN####
33
dnl
34
dnl Author(s):  bartv
35
dnl Contact(s): bartv
36
dnl Date:       1998/12/17
37
dnl Version:    0.01
38
dnl
39
dnl####DESCRIPTIONEND####
40
dnl ====================================================================
41
 
42
dnl eCos is a componentized architecture for deeply embedded systems.
43
dnl It requires a very different configuration system from typical
44
dnl autoconfiscated software such as the various GNU packages.
45
dnl
46
dnl The main eCos host-side software is autoconfiscated to some extent,
47
dnl in that the usual sequence of "configure;make;make install" will
48
dnl work under the right conditions. However it does not conform to
49
dnl the GNU coding standards in numerous ways, for example "make dist"
50
dnl will not work. The main eCos host-side software lives in the
51
dnl "host" subdirectory, and is built unconditionally.
52
dnl
53
dnl The eCos target-side software lives in the "packages" subdirectory,
54
dnl and is organized in numerous subdirectories corresponding to different
55
dnl packages and potentially different versions of each package. In the
56
dnl master repository managed by CVS there will only be one version of
57
dnl each package, "current", which simplifies things somewhat. Other
58
dnl repositories will not be quite so straightforward and require a
59
dnl suitable administration tool.
60
dnl
61
dnl The various eCos packages are not currently auto-confiscated.
62
dnl In particular building eCos requires the use of eCos configuration
63
dnl technology, not autoconf - there is simply no good way of handling
64
dnl a system as highly configurable as eCos using a few command-line
65
dnl options passed to "configure". There would also be serious confusion
66
dnl between host and target, especially when e.g. cross-compiling the
67
dnl host tools. However a possible future enhancement
68
dnl would involve making eCos releases via configure and make, thus
69
dnl allowing for a release process that combines building the various
70
dnl host-side tools such as gcc with creating eCos epk's for the various
71
dnl packages.
72
dnl
73
dnl A complication is that some of the eCos target-side packages also
74
dnl contain package-specific host-side support. For example the
75
dnl Linux synthetic target support uses special host-side software
76
dnl to provide I/O facilities: the architectural HAL package provdes
77
dnl generic support, the synthetic ethernet package extends this
78
dnl with ethernet support, and so on. Such package-specific host-side
79
dnl software does not belong in the main host subdirectory, that
80
dnl would make it very difficult to distribute new packages or
81
dnl new versions of a package. However keeping the code with the
82
dnl various packages makes building more complicated.
83
dnl
84
dnl   1) if the entire repository is managed by CVS or anoncvs, this
85
dnl      configure script will search the packages tree for any packages
86
dnl      that have host-side software that needs to be built -
87
dnl      specifically, that have a file "configure" inside a "host"
88
dnl      subdirectory in a version of a package.
89
dnl
90
dnl   2) if instead the repository contains additional packages
91
dnl      installed as epk's and managed by an administration tool then
92
dnl      it is the responsibility of that tool to let the users build
93
dnl      and rebuild the host-side software as required, for whichever
94
dnl      host platform or platforms are being used. In other words
95
dnl      it is the responsibility of the admin tool to create a
96
dnl      suitable build directory and run "configure; make; make install",
97
dnl      usually as part of the installation process. Note that several
98
dnl      versions of a package may be installed, and it is the
99
dnl      responsibility of each package to take this into account
100
dnl      (although the configure macros are aware of this to some extent,
101
dnl      and will e.g. generate suitable install directory names).
102
dnl      Also note that the top-level configure script will not pick
103
dnl      up such packages because they will be versioned, i.e. the
104
dnl      test for current/host/configure will fail because the
105
dnl      version will not be "current".
106
dnl
107
dnl   3) as a special case it may be desirable to ship pre-built binaries
108
dnl      of some of the package-specific software. It is not clear
109
dnl      just what would be the best way of shipping these - putting
110
dnl      them into the epk's would not be quite right because that would
111
dnl      make the epk's host-specific rather than generic.
112
dnl
113
dnl There is an unresolved problem with possible dependencies between
114
dnl packages, if e.g. the host-side of the synthetic ethernet package could
115
dnl only be built after the architectural synthetic target package.
116
 
117
dnl Some of the eCos documentation is generic and lives in the "doc"
118
dnl subdirectory. Other eCos documentation is package-specific and lives
119
dnl in the appropriate package directory. At present there is no support
120
dnl for building the documentation via configure and make, but such
121
dnl support may be added in future.
122
dnl
123
dnl There is a subdirectory acsupport containing various files such
124
dnl as config.guess and install.sh that are common. This also contains
125
dnl an acinclude.m4 file with various macros that are useful for
126
dnl eCos.
127
 
128
dnl Generic initialization.
129
AC_INIT(acsupport/config.guess)
130
AC_CONFIG_AUX_DIR(acsupport)
131
AC_CANONICAL_HOST
132
AM_INIT_AUTOMAKE(eCos,2.0,0)
133
AM_MAINTAINER_MODE
134
ECOS_CHECK_BUILD_ne_SRC
135
 
136
dnl Nothing actually gets built in this directory, so there should be no
137
dnl need to worry about compiler flags etc. Instead, the problem is
138
dnl figuring out what should actually get built.
139
dnl
140
dnl  1) the host subdirectory should always get built, if it exists.
141
dnl     With the 2.0 release system the directory gets moved to
142
dnl     tools/src
143
 
144
if test -f "${srcdir}/host/configure" ; then
145
   SUBDIRS="host"
146
elif test -f "${srcdir}/tools/src/configure" ; then
147
   SUBDIRS="tools/src"
148
else
149
   SUBDIRS=""
150
fi
151
 
152
dnl  2) any package which has a configure script in a
153
dnl     current/host subdirectory should also get built.
154
dnl
155
dnl     Searching the directory tree is currently done by shell globbing.
156
dnl     Invoking "find" with suitable arguments might be quicker, but
157
dnl     less portable. On some hosts there may be problems with environmental
158
dnl     limits if too many packages provide host-side software.
159
dnl
160
dnl     Currently there is no ordering of packages, so e.g. a device
161
dnl     driver's host-side support cannot depend on some HAL package
162
dnl     because the latter may not have been built and installed yet.
163
dnl     This is a good thing because packages are meant to be self-contained
164
dnl     whenever possible. Interaction between packages is typically handled
165
dnl     at the Tcl level at run-time, so there are no build-time complications.
166
 
167
PKGHOSTDIRS=""
168
FOUND_CONFIGURES=""
169
FOUND_CONFIGURES="${FOUND_CONFIGURES} ${srcdir}/packages/*/*/host/configure"
170
FOUND_CONFIGURES="${FOUND_CONFIGURES} ${srcdir}/packages/*/*/*/host/configure"
171
FOUND_CONFIGURES="${FOUND_CONFIGURES} ${srcdir}/packages/*/*/*/*/host/configure"
172
FOUND_CONFIGURES="${FOUND_CONFIGURES} ${srcdir}/packages/*/*/*/*/*/host/configure"
173
FOUND_CONFIGURES="${FOUND_CONFIGURES} ${srcdir}/packages/*/*/*/*/*/*/host/configure"
174
for configure in ${FOUND_CONFIGURES}; do
175
    if test -f ${configure}; then
176
        dnl A configure script has been found in the source tree.
177
        dnl First turn it into a directory, then replace the absolute path
178
        dnl with a relative one.
179
        hostdir=`dirname ${configure}`
180
        hostdir=`echo ${hostdir} | sed -e "s:^${srcdir}/::"`
181
        PKGHOSTDIRS="${PKGHOSTDIRS} ${hostdir}"
182
    fi
183
done
184
 
185
SUBDIRS="${SUBDIRS} ${PKGHOSTDIRS}"
186
 
187
dnl Because the eCos directory layout does not conform to GNU conventions
188
dnl it is necessary to create various levels of intermediate directories.
189
dnl This happens via config.status, prior to the recursion into the
190
dnl appropriate directories.
191
AC_OUTPUT_COMMANDS([${CONFIG_SHELL-/bin/sh} ${top_srcdir}/acsupport/mkinstalldirs ${REQUIRED_DIRS}],REQUIRED_DIRS="${SUBDIRS}")
192
 
193
AC_SUBST(SUBDIRS)
194
AC_CONFIG_SUBDIRS(${SUBDIRS})
195
AC_OUTPUT(Makefile)

powered by: WebSVN 2.1.0

© copyright 1999-2024 OpenCores.org, equivalent to Oliscience, all rights reserved. OpenCores®, registered trademark.