Document gsasl integration
[exim.git] / src / scripts / Configure-Makefile
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61ec970d 1#! /bin/sh
61ec970d
PH
2
3# Shell script to build Makefile in a build directory. It must be called
4# from inside the directory. It does its own checking of when to rebuild; it
5# just got too horrendous to get it right in "make", because of the optionally
6# existing configuration files.
7
8
9# First off, get the OS type, and check that there is a make file for it.
10
11ostype=`../scripts/os-type -generic` || exit 1
12
13if [ ! -r ../OS/Makefile-$ostype ] ; then
14 echo ""
15 echo "*** Sorry - operating system $ostype is not supported"
16 echo "*** See OS/Makefile-* for supported systems" 1>&2
17 echo ""
18 exit 1
19fi
20
21# We also need the architecture type, in order to test for any architecture-
22# specific configuration files.
23
24archtype=`../scripts/arch-type` || exit 1
25
26# Now test for either the non-existence of Makefile, or for any of its
27# components being newer. Note that the "newer" script gives the right
28# answer (for our purposes) when the first file is non-existent.
29
30editme=../Local/Makefile
31rebuild=yes
32
33if [ -f Makefile ] ; then
34 rebuild=no
35 if ../scripts/newer $editme Makefile || \
36 ../scripts/newer $editme-$ostype Makefile || \
37 ../scripts/newer $editme-$archtype Makefile || \
38 ../scripts/newer $editme-$ostype-$archtype Makefile || \
39 ../scripts/newer ../scripts/Configure-Makefile Makefile || \
40 ../scripts/newer ../OS/Makefile-Base Makefile || \
41 ../scripts/newer ../OS/Makefile-Default Makefile
42 then
43 rebuild=yes
44 fi
45fi
46
47# If the "build" variable is set it means that a build name was explicitly
48# given. Arrange to pick up a build-specific configuration file.
49
50if [ "X$build" != "X" ] ; then
51 mfb=Local/Makefile-$build
52 if ../scripts/newer $editme-$build Makefile ; then
53 rebuild=yes
54 fi
55else
56 mfb=
57fi
58
59
60# If Makefile is up-to-date, no need to rebuild it.
61
62if [ $rebuild = no ] ; then
63 echo "\`Makefile' is up to date."
64 echo " "
65 exit
66fi
67
68# Makefile needs to be rebuilt in the current directory by joining
69# the generic default makefile, the OS base makefile, and then local
70# generic, OS-specific, architecture-specific, and OS+architecture-specific
71# makefiles, if they exist. These files all contain macro definitions, with
72# later definitions overriding earlier ones. Make a temporary file first, in
73# case things go wrong. A second temporary is needed for sorting out the
74# default Perl stuff. Use short macro names to save typing.
75
76mf=Makefile
77mft=$mf-t
78mftt=$mf-tt
79
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80look_mf=lookups/Makefile.predynamic
81look_mft=${look_mf}-t
82
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83# Ensure the temporary does not exist and start the new one by setting
84# the OSTYPE and ARCHTYPE variables.
85
0a349494 86rm -f $mft $mftt $look_mf-t
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87(echo "OSTYPE=$ostype"; echo "ARCHTYPE=$archtype"; echo "") > $mft || exit 1
88
89# Now concatenate the files to the temporary file. Copy the files using sed to
90# remove comments, blank lines, and trailing white space.
91
92# BEWARE: a tab character is needed in the sed command below. It has had
93# a nasty tendency to get lost in the past, causing a problem if a tab has
94# actually been present in one of the files. Use a variable to hold a space
95# and a tab to keep the tab in one place.
96
97st=' '
98
99for f in OS/Makefile-Default \
100 OS/Makefile-$ostype \
101 Local/Makefile \
102 Local/Makefile-$ostype \
103 Local/Makefile-$archtype \
104 Local/Makefile-$ostype-$archtype \
105 $mfb
106do if test -r ../$f
107 then echo "# From $f"
108 sed "/^#/d;/^[$st]*\$/d;s/[$st]*\$//" ../$f || exit 1
109 echo "# End of $f"
110 echo ""
111 fi
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112done >> $mft || exit 1
113
114# make the lookups Makefile with the definitions
115
116## prepend stuff here; eg: grep LOOKUP_ $mft > $look_mft
117## cat ../src/lookups/Makefile >> $look_mft
118cp ../src/lookups/Makefile $look_mft
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119
120# See if there is a definition of EXIM_PERL in what we have built so far.
121# If so, run Perl to find the default values for PERL_CC, PERL_CCOPTS,
122# and PERL_LIBS. These need to be put at the top of the Makefile, so we rename
123# what we have so far and then copy it afterwards. Use the value of PERL_COMMAND
124# if it has been defined.
125
126EXIM_PERL=`grep EXIM_PERL $mft`
127
128PERL_COMMAND=`grep PERL_COMMAND $mft | sed -e "\\$!d;s/^[$st]*PERL_COMMAND[$st]*=[$st]*//"`
129if [ "${PERL_COMMAND}" = "" ] ; then
130 PERL_COMMAND='perl'
131fi
132
133if [ "${EXIM_PERL}" != "" ] ; then
134 testperl=`$PERL_COMMAND --version`
135 if [ "$testperl" = "" ] ; then
136 echo "*** EXIM_PERL is set, but '$PERL_COMMAND --version' failed"
137 exit 1
138 fi
139
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140 EXTUTILS_EMBED_NOT_INSTALLED=`$PERL_COMMAND -MExtUtils::Embed -e ";" 2>&1`
141 if [ "${EXTUTILS_EMBED_NOT_INSTALLED}" != "" ] ; then
142 echo "Please install ExtUtils::Embed for $PERL_COMMAND"
143 exit 1;
144 fi
145
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146 mv $mft $mftt
147 echo "PERL_CC=`$PERL_COMMAND -MConfig -e 'print $Config{cc}'`" >>$mft
148 echo "PERL_CCOPTS=`$PERL_COMMAND -MExtUtils::Embed -e ccopts`" >>$mft
149 echo "PERL_LIBS=`$PERL_COMMAND -MExtUtils::Embed -e ldopts`" >>$mft
150 echo "" >>$mft
151 cat $mftt >> $mft
152 rm -f $mftt
153fi
154
155# Record the build variable in the Makefile.
156
157echo "build=$build" >>$mft
158echo "" >>$mft
159
160# Finally, join on the generic base make file, which contains the actual
161# rules and stuff.
162
76ea0716 163echo "# From ../OS/Makefile-Base" >> $mft
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164cat ../OS/Makefile-Base >> $mft || exit 1
165
166# If the new makefile is the same as the existing one, say so, and just
167# update the timestamp. Otherwise remove the old and install the new.
168
0a349494 169if [ -s $mf ] && cmp -s $mft $mf && [ -s $look_mf ] && cmp -s $look_mft $look_mf
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170then echo ">>> rebuilt $mf unchanged"
171 echo " "
172 touch $mf || exit
173 rm -f $mft
0a349494 174elif rm -f $mf $look_mf
61ec970d 175 mv $mft $mf
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176 mv $look_mft $look_mf
177then echo ">>> New $mf & $look_mf installed"
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178 echo '>>> Use "make makefile" if you need to force rebuilding of the makefile'
179 echo " "
180else echo " "
181 echo "*** Failed to install $mf - see $mft"
0a349494 182 echo " (or $look_mft)"
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183 echo " "
184 exit 1;
185fi
186
187# End of Configure-Makefile