2 # $Cambridge: exim/src/scripts/Configure-Makefile,v 1.2 2005/09/19 14:42:31 ph10 Exp $
4 # Shell script to build Makefile in a build directory. It must be called
5 # from inside the directory. It does its own checking of when to rebuild; it
6 # just got too horrendous to get it right in "make", because of the optionally
7 # existing configuration files.
10 # First off, get the OS type, and check that there is a make file for it.
12 ostype=`../scripts/os-type -generic` || exit 1
14 if [ ! -r ../OS/Makefile-$ostype ] ; then
16 echo "*** Sorry - operating system $ostype is not supported"
17 echo "*** See OS/Makefile-* for supported systems" 1>&2
22 # We also need the architecture type, in order to test for any architecture-
23 # specific configuration files.
25 archtype=`../scripts/arch-type` || exit 1
27 # Now test for either the non-existence of Makefile, or for any of its
28 # components being newer. Note that the "newer" script gives the right
29 # answer (for our purposes) when the first file is non-existent.
31 editme=../Local/Makefile
34 if [ -f Makefile ] ; then
36 if ../scripts/newer $editme Makefile || \
37 ../scripts/newer $editme-$ostype Makefile || \
38 ../scripts/newer $editme-$archtype Makefile || \
39 ../scripts/newer $editme-$ostype-$archtype Makefile || \
40 ../scripts/newer ../scripts/Configure-Makefile Makefile || \
41 ../scripts/newer ../OS/Makefile-Base Makefile || \
42 ../scripts/newer ../OS/Makefile-Default Makefile
48 # If the "build" variable is set it means that a build name was explicitly
49 # given. Arrange to pick up a build-specific configuration file.
51 if [ "X$build" != "X" ] ; then
52 mfb=Local/Makefile-$build
53 if ../scripts/newer $editme-$build Makefile ; then
61 # If Makefile is up-to-date, no need to rebuild it.
63 if [ $rebuild = no ] ; then
64 echo "\`Makefile' is up to date."
69 # Makefile needs to be rebuilt in the current directory by joining
70 # the generic default makefile, the OS base makefile, and then local
71 # generic, OS-specific, architecture-specific, and OS+architecture-specific
72 # makefiles, if they exist. These files all contain macro definitions, with
73 # later definitions overriding earlier ones. Make a temporary file first, in
74 # case things go wrong. A second temporary is needed for sorting out the
75 # default Perl stuff. Use short macro names to save typing.
81 # Ensure the temporary does not exist and start the new one by setting
82 # the OSTYPE and ARCHTYPE variables.
85 (echo "OSTYPE=$ostype"; echo "ARCHTYPE=$archtype"; echo "") > $mft || exit 1
87 # Now concatenate the files to the temporary file. Copy the files using sed to
88 # remove comments, blank lines, and trailing white space.
90 # BEWARE: a tab character is needed in the sed command below. It has had
91 # a nasty tendency to get lost in the past, causing a problem if a tab has
92 # actually been present in one of the files. Use a variable to hold a space
93 # and a tab to keep the tab in one place.
97 for f in OS/Makefile-Default \
100 Local/Makefile-$ostype \
101 Local/Makefile-$archtype \
102 Local/Makefile-$ostype-$archtype \
105 then echo "# From $f"
106 sed "/^#/d;/^[$st]*\$/d;s/[$st]*\$//" ../$f || exit 1
110 done >> $mft || exit 1
112 # See if there is a definition of EXIM_PERL in what we have built so far.
113 # If so, run Perl to find the default values for PERL_CC, PERL_CCOPTS,
114 # and PERL_LIBS. These need to be put at the top of the Makefile, so we rename
115 # what we have so far and then copy it afterwards. Use the value of PERL_COMMAND
116 # if it has been defined.
118 EXIM_PERL=`grep EXIM_PERL $mft`
120 PERL_COMMAND=`grep PERL_COMMAND $mft | sed -e "\\$!d;s/^[$st]*PERL_COMMAND[$st]*=[$st]*//"`
121 if [ "${PERL_COMMAND}" = "" ] ; then
125 if [ "${EXIM_PERL}" != "" ] ; then
126 testperl=`$PERL_COMMAND --version`
127 if [ "$testperl" = "" ] ; then
128 echo "*** EXIM_PERL is set, but '$PERL_COMMAND --version' failed"
133 echo "PERL_CC=`$PERL_COMMAND -MConfig -e 'print $Config{cc}'`" >>$mft
134 echo "PERL_CCOPTS=`$PERL_COMMAND -MExtUtils::Embed -e ccopts`" >>$mft
135 echo "PERL_LIBS=`$PERL_COMMAND -MExtUtils::Embed -e ldopts`" >>$mft
141 # Record the build variable in the Makefile.
143 echo "build=$build" >>$mft
146 # Finally, join on the generic base make file, which contains the actual
149 echo "# From ../OS/Makefile-Base" >> $mft
150 cat ../OS/Makefile-Base >> $mft || exit 1
152 # If the new makefile is the same as the existing one, say so, and just
153 # update the timestamp. Otherwise remove the old and install the new.
155 if [ -s $mf ] && cmp -s $mft $mf
156 then echo ">>> rebuilt $mf unchanged"
162 then echo ">>> New $mf installed"
163 echo '>>> Use "make makefile" if you need to force rebuilding of the makefile'
166 echo "*** Failed to install $mf - see $mft"
171 # End of Configure-Makefile