NetBSD/tools/gcc/mknative.common

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2003-11-27 03:58:26 +03:00
# $NetBSD: mknative.common,v 1.1 2003/11/27 00:58:26 mrg Exp $
#
# from: NetBSD: mknative,v 1.12 2003/03/05 06:17:17 mrg Exp
#
# shell-fragment common to all "mknative" scripts
bomb () {
echo >&1 "ABORT: $*"
exit 1
}
# usage: getvars MAKEFILE VARNAME [VARNAME...]
getvars () {
_mf="$1"; shift
$MAKE -f - _x_ <<EOF || bomb "getvars $_mf $* failed"
_x_:
.for var in $*
@echo G_\${var}=\${\${var}:Q} | sed 's,$_VPATH,\$\${GNUHOSTDIST},g'
.endfor
.include "$_TMPDIR/$_mf"
EOF
}
# usage: write_c FILENAME
write_c () {
echo '/* This file is automatically generated. DO NOT EDIT! */' >$_TOP/$1.tmp || \
bomb "cannot create $1"
grep '$''NetBSD' $0 | sed 's,[#$],,g;s,.*,/* Generated from: & */,' >>$_TOP/$1.tmp
echo '' >>$_TOP/$1.tmp
writefile $1
}
# usage: write_mk FILENAME
write_mk () {
echo '# This file is automatically generated. DO NOT EDIT!' >$_TOP/$1.tmp || \
bomb "cannot create $1"
grep '$''NetBSD' $0 | sed 's,[#$],,g;s,.*,# Generated from: &,' >>$_TOP/$1.tmp
echo '#' >>$_TOP/$1.tmp
writefile $1
}
writefile () {
sed -e 's,netbsd\(elf\)*1[0-9\.]*\(_\)*[A-Z]*,netbsd\1,' \
-e 's,^/\* #undef HAVE_MMAP \*/$,#define HAVE_MMAP 1,' >>$_TOP/$1.tmp
# Compare new file, sans "generated from" comments and RCS Id, to
# old file. If they match, don't change anything.
rm -f $_TMPDIR/.1 $_TMPDIR/.2
grep -v 'Generated from:' $_TOP/$1 >$_TMPDIR/.1 2>/dev/null
grep -v 'Generated from:' $_TOP/$1.tmp >$_TMPDIR/.2
# will not overwrite a file that has the same content
if cmp $_TMPDIR/.1 $_TMPDIR/.2 >/dev/null 2>&1; then
rm -f $_TOP/$1.tmp
else
echo >&2 "$1 changed"
mv -f $_TOP/$1.tmp $_TOP/$1
fi
}