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