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#! /bin/sh
# Convert templates into Makefile and config.c, based on the module
# definitions found in the file Setup.
#
# Usage: makesetup [-s dir] [-c file] [-m file] [Setup] ... [-n [Setup] ...]
#
# Options:
# -s directory: alternative source directory (default derived from $0)
# -c file: alternative config.c template (default $srcdir/config.c.in)
# -c -: don't write config.c
# -m file: alternative Makefile template (default ./Makefile.pre)
# -m -: don't write Makefile
#
# Remaining arguments are one or more Setup files (default ./Setup).
# Setup files after a -n option are used for their variables, modules
# and libraries but not for their .o files.
#
# See Setup.in for a description of the format of the Setup file.
#
# The following edits are made:
#
# Copying config.c.in to config.c:
# - insert an identifying comment at the start
# - for each <module> mentioned in Setup:
# + insert 'extern void init<module>();' before MARKER 1
# + insert '{"<module>", initmodule},' before MARKER 2
#
# Copying Makefile.pre to Makefile:
# - insert an identifying comment at the start
# - replace @MODOBJS@ by the list of objects from Setup (except for
# Setup files after a -n option)
# - replace @MODLIBS@ by the list of libraries from Setup
# - for each object file mentioned in Setup, insert a rule
# '<file>.o: <file>.c; <build commands>' before the comment
# 'Rules added by makesetup'
# - for each variable definition found in Setup, insert the definition
# before the comment 'Definitions added by makesetup'
# Loop over command line options
usage='
usage: makesetup [-s srcdir] [-c config.c.in] [-m Makefile.pre]
[Setup] ... [-n [Setup] ...]'
srcdir=''
config=''
makepre=''
noobjects=''
while :
do
case $1 in
-s) shift; srcdir=$1; shift;;
-c) shift; config=$1; shift;;
-m) shift; makepre=$1; shift;;
--) shift; break;;
-n) noobjects=yes;;
-*) echo "$usage" 1>&2; exit 2;;
*) break;;
esac
done
# Set default srcdir and config if not set by command line
# (Not all systems have dirname)
case $srcdir in
'') case $0 in
*/*) srcdir=`echo $0 | sed 's,/[^/]*$,,'`;;
*) srcdir=.;;
esac;;
esac
case $config in
'') config=$srcdir/config.c.in;;
esac
case $makepre in
'') makepre=Makefile.pre;;
esac
# Newline for sed i and a commands
NL="\\
"
# Main loop
for i in ${*-Setup}
do
case $i in
-n) echo '<noobjects>';;
*) cat "$i";;
esac
done |
sed -e 's/[ ]*#.*//' -e '/^[ ]*$/d' |
(
DEFS=
MODS=
OBJS=
LIBS=
RULES=
while read line
do
# Output DEFS in reverse order so first definition overrides
case $line in
*=*) DEFS="$line$NL$DEFS"; continue;;
'<noobjects>') noobjects=yes; continue;;
esac
objs=
cpps=
set $line
for arg
do
case $arg in
-[IDUC]*) cpps="$cpps $arg";;
-[A-Zl]*) LIBS="$LIBS $arg";;
*.a) LIBS="$LIBS $arg";;
*.o) objs="$objs $arg";;
*.*) echo 1>&2 "bad word $arg in $line"
exit 1;;
[a-zA-Z_]*) MODS="$MODS $arg";;
*) echo 1>&2 "bad word $arg in $line"
exit 1;;
esac
done
case $noobjects in
yes) continue;;
esac
for obj in $objs
do
src=`basename $obj .o`.c
case $src in
glmodule.c) ;;
*) src='$(srcdir)/'$src;;
esac
RULES="$RULES$obj: $src; \$(CC) \$(CFLAGS) $cpps -c $src$NL"
done
OBJS="$OBJS $objs"
done
EXTDECLS=
INITBITS=
for mod in $MODS
do
EXTDECLS="${EXTDECLS}extern void init$mod();$NL"
INITBITS="${INITBITS} {\"$mod\", init$mod},$NL"
done
case $config in
-) ;;
*) sed -e "
1i$NL/* Generated automatically from $config by makesetup. */
/MARKER 1/i$NL$EXTDECLS
/MARKER 2/i$NL$INITBITS
" $config >config.c
;;
esac
case $makepre in
-) ;;
*) sed -e "
1i$NL# Generated automatically from $makepre by makesetup.
s%@MODOBJS@%$OBJS%
s%@MODLIBS@%$LIBS%
/Rules added by makesetup/a$NL$NL$RULES
/Definitions added by makesetup/a$NL$NL$DEFS
" $makepre >Makefile
;;
esac
)
|
