Metaconfig unit changes for #10592.

[metaconfig.git] / U / compline / orderlib.U

?RCS: $Id: orderlib.U,v 3.0.1.4 1997/02/28 16:18:18 ram Exp $
?RCS:
?RCS: Copyright (c) 1991-1993, Raphael Manfredi
?RCS: 
?RCS: You may redistribute only under the terms of the Artistic Licence,
?RCS: as specified in the README file that comes with the distribution.
?RCS: You may reuse parts of this distribution only within the terms of
?RCS: that same Artistic Licence; a copy of which may be found at the root
?RCS: of the source tree for dist 3.0.
?RCS:
?RCS: $Log: orderlib.U,v $
?RCS: Revision 3.0.1.4  1997/02/28  16:18:18  ram
?RCS: patch61: replaced .a with $_a all over the place
?RCS: patch61: likewise for .o replaced by $_o
?RCS: patch61: now uses the ar located by Loc.U
?RCS:
?RCS: Revision 3.0.1.3  1995/01/11  15:33:04  ram
?RCS: patch45: allows hint files to specify their own value for 'ranlib'
?RCS:
?RCS: Revision 3.0.1.2  1994/10/29  16:26:48  ram
?RCS: patch36: now performs a real small compile for accurate checks (ADO)
?RCS:
?RCS: Revision 3.0.1.1  1994/08/29  16:31:17  ram
?RCS: patch32: use cc variable instead of hardwired 'cc' in 1st compile
?RCS:
?RCS: Revision 3.0  1993/08/18  12:09:26  ram
?RCS: Baseline for dist 3.0 netwide release.
?RCS:
?MAKE:orderlib ranlib: Loc ar cat test rm +cc +ccflags +ldflags +libs _a _o run
?MAKE:	-pick add $@ %<
?S:orderlib:
?S:	This variable is "true" if the components of libraries must be ordered
?S:	(with `lorder $* | tsort`) before placing them in an archive.  Set to
?S:	"false" if ranlib or ar can generate random libraries.
?S:.
?S:ranlib:
?S:	This variable is set to the pathname of the ranlib program, if it is
?S:	needed to generate random libraries.  Set to ":" if ar can generate
?S:	random libraries or if random libraries are not supported
?S:.
: see if ar generates random libraries by itself
echo " "
echo "Checking how to generate random libraries on your machine..." >&4
?X: Some systems (like MIPS) complain when running ar... Others like Ultrix
?X: need an explicit 'ar ts' to add the table of contents.
?X: Still others like Linux run ar ts successfully, but still need ranlib.
?X: This set of tests seems the minimum necessary to check out Linux.
?X: We need to explicitly put the entries in out-of-order so that Sun's ld
?X: will fail.  (Otherwise it complains, but gives an exit status of 0.)
echo 'int bar1() { return bar2(); }' > bar1.c
echo 'int bar2() { return 2; }' > bar2.c
$cat > foo.c <<'EOP'
int main() { printf("%d\n", bar1()); exit(0); }
EOP
$cc $ccflags -c bar1.c >/dev/null 2>&1
$cc $ccflags -c bar2.c >/dev/null 2>&1
$cc $ccflags -c foo.c >/dev/null 2>&1
$ar rc bar$_a bar2$_o bar1$_o >/dev/null 2>&1
if $cc -o foobar $ccflags $ldflags foo$_o bar$_a $libs > /dev/null 2>&1 &&
	$run ./foobar >/dev/null 2>&1; then
	echo "$ar appears to generate random libraries itself."
	orderlib=false
	ranlib=":"
elif $ar ts bar$_a >/dev/null 2>&1 &&
	$cc -o foobar $ccflags $ldflags foo$_o bar$_a $libs > /dev/null 2>&1 &&
	$run ./foobar >/dev/null 2>&1; then
		echo "a table of contents needs to be added with '$ar ts'."
		orderlib=false
		ranlib="$ar ts"
else
?X: Allow hints to specify their own ranlib "script". For instance, on
?X: some NeXT machines, the timestamp put by ranlib is not correct, and this
?X: may raise tedious recompiles for nothing. Therefore, NeXT may add the
?X: ranlib='sleep 5; /bin/ranlib' line in their hints to "fix" that.
?X: (reported by Andreas Koenig <k@franz.ww.tu-berlin.de>)
	case "$ranlib" in
	:) ranlib='';;
	'')
		ranlib=`./loc ranlib X /usr/bin /bin /usr/local/bin`
		$test -f $ranlib || ranlib=''
		;;
	esac
	if $test -n "$ranlib"; then
		echo "your system has '$ranlib'; we'll use that."
		orderlib=false
	else
		echo "your system doesn't seem to support random libraries"
		echo "so we'll use lorder and tsort to order the libraries."
		orderlib=true
		ranlib=":"
	fi
fi
$rm -f foo* bar*