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annotate host/README @ 136:a9ac27ec7abc ecos-sw-2000-11-17

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Merge from eCos master repository on 2000-11-17-18:24:25-GMT
author jlarmour
date Fri, 17 Nov 2000 23:16:43 +0000
parents 518f42066aba
children 0d0f03f76f6a
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1 eCos Host-side Software
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2 =======================
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4 This directory contains the eCos host-side sources. This includes
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5 libcdl, the CDL library which underlies the whole eCos configuration
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6 system, and both the command-line and graphical configuration tools.
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7
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8 The eCos host-side software is free software, released under the GNU
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9 General Public License. See the file COPYING for further details.
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12 Contents
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13 ========
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14
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15 The host-side sources include the following:
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16
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17 infra/
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18 This is an implementation of the eCos infrastructure that can be
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19 used on the host-side, and provides assertion, tracing and
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20 testcase support.
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22 NOTE: the eCos infrastructure facilities are not especially
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23 well-suited to host-side development, in particular they are not
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24 C++-oriented. There are plans to remove the current infrastructure
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25 completely and replace it with something more suitable. People
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26 planning new projects should be aware of this, and may wish to
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27 avoid using the current infrastructure.
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28
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29 libcdl/
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30 The CDL library lies at the heart of the eCos configuration system.
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32 tools/configtool/
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33 The sources to the various configuration tools can be found here.
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34 In particular the command line ecosconfig tool lives in
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35 tools/configtool/standalone/common; the sources related to
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36 makefile generation currently live in
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37 tools/configtool/common/common, and the graphical configuration
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38 tool is spread over various directories including
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39 tools/configtool/common/win32 and tools/configtool/standalone/win32
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40
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41 There are various other sub-directories related to the admin tool,
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42 testing support, and so on.
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43
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44 It should be noted that the eCos host-side software is still
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45 undergoing rapid development, and the sources are subject to change
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46 and reorganization at any time.
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48 Much of the code is cross-platform. The obvious exception is the
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49 graphical configuration tool which, at the time of writing, can only
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50 be built for Windows hosts and requires Visual C++. It should be
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51 possible to build the underlying libraries and the command-line
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52 configuration tool using gcc/g++ on any Unix platform. A Unix version
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53 of the graphical configuration tool is planned but not yet available.
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54
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55 More Information
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56 ================
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57
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58 Please see the eCos web site, http://sourceware.cygnus.com/ecos/, for
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59 further details. This includes the FAQ, a form for reporting problems,
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60 and details of the various mailing lists
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61 (http://sourceware.cygnus.com/ecos/intouch.html)
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62 At the time of writing there are no separate mailing lists for the
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63 eCos host-side sources, the main mailing list
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64 ecos-discuss@sourceware.cygnus.com should be used instead.
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67 Installation
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68 ============
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69
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70 Test builds of the eCos host-side generally happen on the following
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71 platforms: Red Hat Linux 6.1 and later; Windows NT using cygwin 1.0 or
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72 later; and Windows NT using VC++ 6.0. The graphical configuration tool
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73 can only be built with VC++ and involves a Developer Studio project,
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74 see tools/configtool/standalone/win32/Configtool.dsw. The other
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75 software can be built using the conventional "configure/make/make
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76 install" steps. It should be noted that the eCos host-side software is
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77 not fully auto-confiscated, and some facilities like "make dist" will
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78 not work. Also, the existing DejaGnu-based testing facilities are
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79 minimal, only intended as a starting point, and may not work on all
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80 platforms.
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81
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82 The eCos host-side software has a dependency on Tcl. This is not
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83 supplied with the sources, because many users will already have a
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84 suitable installation. Any release of Tcl from 8.0 onwards should be
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85 usable. There are some configure command-line options related to the
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86 Tcl installation, as described below.
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87
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88 The instructions for installing under Linux are given first.
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89 Installation on other platforms is very similar, so only the
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90 differences will be noted.
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91
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92 Installing on Linux
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93 ===================
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94
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95 It is strongly recommended that a separate build tree is used, as
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96 opposed to building directly in the source tree. The latter has not
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97 been tested and, given some of the build steps, may not work very
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98 well.
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99
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100 $ mkdir build
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101 $ cd build
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102
126
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103 The next step is to run the toplevel configure script, in other words
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104 the configure script in the same directory as this README file. This
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105 will automatically recurse into the various subdirectories for the
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106 infrastructure, libcdl, and so on. Note that all of the host-side
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107 software needs to be configured and built: it is not possible to
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108 invoke just the configure script for the ecosconfig tool and build
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109 just that tool, because there are dependencies on other parts of the
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110 host-side code.
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111
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112 $ <path>/configure <args>
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113
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114 A list of the all the command-line options can be obtained by running
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115 "configure --help". The most important ones are as follows:
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116
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117 1) --prefix. This can be used to specify the location of the install
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118 tree, defaulting to /usr/local, so the ecosconfig program ends up
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119 in /usr/local/bin/ecosconfig and the CDL library ends up in
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120 /usr/local/lib/libcdl.a. If an alternative location is preferred
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121 this can be specified with --prefix, for example:
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122
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123 $ <path>/configure --prefix=/usr/local/ecos <args>
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124
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125 2) --enable-debug. By default all assertions and tracing are disabled.
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126 When debugging any of the host-side software these must be enabled.
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127
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128 $ <path>/configure --enable-debug
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129
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130 It is also possible to control most of the assertion and tracing
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131 macros at a finer grain. This is likely to be useful only to the
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132 main developers:
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133
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134 --disable-asserts disable all assertions
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135 --disable-preconditions disable a subset of the assertions
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136 --disable-postconditions disable a subset of the assertions
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137 --disable-invariants disable a subset of the assertions
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138 --disable-loopinvariants disable a subset of the assertions
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139 --disable-tracing disable tracing
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140 --disable-fntracing disable function entry/exit tracing
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141
136
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142 3) --with-tcl=<path>, --with-tcl-header=<path>, --with-tcl-lib=<path>
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143 and --with-tcl-version=<number>
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144
76
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145 The host-side tools have a dependency on Tcl, which is not supplied
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146 with the sources because many people will already have a suitable
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147 installation. Specifically it is necessary to have the header file
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148 tcl.h and appropriate libraries such that -ltcl will work - this
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149 can involve either static or shared libraries.
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150
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151 By default the configure script will assume that there is a
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152 suitable Tcl installation in the install location, so if there is
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153 no --prefix argument then it will look for /usr/local/include/tcl.h
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154 and it will add -L/usr/local/lib to the library search path. If
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155 Tcl is installed elsewhere then this can be specified with a
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156 --with-tcl option. For example, if the default installation in
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157 /usr should be used then the following configure option is
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158 appropriate:
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159
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160 $ <path>/configure --with-tcl=/usr <args>
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161
136
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162 If the Tcl libraries and Tcl headers are installed in different
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163 locations, such as when a seperate --prefix and --exec-prefix are
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164 used, the --with-tcl-header and --with-tcl-lib options can be used
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165 to specify both location. The configure will expect to find
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166 <tcl-header-dir>/include/tcl.h and <tcl-lib-dir>/lib/tclConfig.sh.
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167 The --with-tcl option has precedence and if used will override the
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168 --with-tcl-header and --with-tcl-lib options.
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169
76
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170 It is possible to have multiple versions of Tcl installed, for
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171 example libtcl8.0.a, libtcl8.1.a, and so on. Typically linking with
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172 -ltcl will result in the latest version being used. It is possible
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173 to specify a different version using --with-tcl-version, e.g.:
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174
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175 $ <path>configure --with-tcl=/usr/local/scriptics --with-tcl-version=8.1 <args>
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176
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177 Following the configure step the build tree should be set up
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178 correctly. All that remains is the actual build and install:
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179
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180 $ make
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181 $ make install
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182
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183 This should result in an ecosconfig executable, plus appropriate
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184 libraries and header files.
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185
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186
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187 Installing on cygwin
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188 ====================
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189
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190 Installing under cygwin requires essentially the same steps as
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191 under Linux. It is more likely that a suitable --prefix option will
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192 have to be used, and that the location of the Tcl installation needs
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193 to be specified with --with-tcl. However appropriate use of cygwin
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194 mount points may avoid some of these problems. If the full path to
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195 the configure script contains spaces, then the short form of the path
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196 should be used when invoking configure.
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197
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198 One issue to be aware of is the naming convention for the Tcl library.
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199 On a Unix system this will typically be called libtcl8.0.a (adjusted
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200 according to the version number), with a symbolic link from libtcl.a
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201 to the most recent version. Under cygwin the equivalent library is
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202 called libtcl80.a, and symbolic links are not used. For a standard
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203 cygwin 1.0 installation the configure script knows how to pick up the
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204 appropriate library, but if a more recent version of Tcl has been
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205 installed then due care has to be taken with the --with-tcl-version
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206 option.
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207
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208
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209 Installing on NT with VC++
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210 ==========================
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211
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212 It is possible to build both the graphical configuration tool and the
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213 ecosconfig command line tool using a Developer Studio project,
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214 tools/ecosconfig/standalone/win32/Configtool.dsw
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215
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216 It is also possible to build the command line tool and the various
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217 libraries using the configure script. At the time of writing the
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218 graphical configuration tool cannot yet be built that way. This still
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219 requires a cygwin installation because it needs the bash shell and GNU
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220 make. First, it is necessary to tell the configure script to use a
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221 compiler other than gcc:
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222
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223 $ mkdir build
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224 $ cd build
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225 $ CC=cl CXX=cl <path>/configure <args>
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226
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227 The configure script will do the right thing if VC++ is specified in
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228 this way.
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229
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230 It is likely that /usr/local will be an inappropriate install location
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231 for VC++ applications, so an alternative prefix needs to be specified:
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232
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233 $ CC=cl CXX=cl <path>/configure --prefix=<install-path> <args>
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234
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235 Note that the install path should be a cygwin path, i.e. cygwin mount
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236 points are accepted and forward slashes should be used.
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237
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238 It is also necessary to use the right version of Tcl. For a VC++ build
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239 the cygwin release of Tcl should not be used. Instead a suitable
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240 prebuilt Tcl package can be obtained from http://www.scriptics.com/.
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241 It is necessary to tell the configure script where this has been
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242 installed, for example:
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243
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244 $ CC=cl CXX=cl <path>/configure --prefix=<install-path> \
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245 --with-tcl=/d/local/scriptics/Tcl/tcl8.1 <args>
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246
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247 The library name will be of the form tcl81.lib, and there will not be
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248 a symbolic link from tcl.lib to the appropriate version. Typically it
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249 will be necessary to specify the Tcl version explicitly:
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250
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251 $ CC=cl CXX=cl <path>/configure --prefix=<install-path> \
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252 --with-tcl=/d/local/scriptics/Tcl/tcl8.1 --with-tcl-version=81 <args>
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253
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254 Following a successful configure, the tools can be built and installed
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255 in the normal fashion:
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256
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257 $ make
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258 $ make install
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259
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260 This assumes that the cl.exe executable is on the shell's search path,
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261 and that appropriate environment variables such as INCLUDE and LIB are
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262 set up correctly. The VC++ documentation should be consulted for
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263 further information.
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264
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265
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266 //####COPYRIGHTBEGIN####
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267 //
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268 // ----------------------------------------------------------------------------
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269 // Copyright (C) 2000 Red Hat, Inc.
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270 //
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271 // This file is part of the eCos host tools.
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272 //
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273 // This program is free software; you can redistribute it and/or modify it
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274 // under the terms of the GNU General Public License as published by the Free
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275 // Software Foundation; either version 2 of the License, or (at your option)
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276 // any later version.
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277 //
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278 // This program is distributed in the hope that it will be useful, but WITHOUT
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279 // ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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280 // FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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281 // more details.
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282 //
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283 // You should have received a copy of the GNU General Public License along with
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284 // this program; if not, write to the Free Software Foundation, Inc.,
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285 // 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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286 //
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287 // ----------------------------------------------------------------------------
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288 //
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289 //####COPYRIGHTEND####