perl: Do not unset AR for global scope

packages/perl/build.sh

@@ -39,6 +39,13 @@ termux_step_post_get_source() {
 termux_step_configure() {
 	export PATH=$PATH:$TERMUX_STANDALONE_TOOLCHAIN/bin
 
+	# Since we specify $TERMUX_PREFIX/bin/sh below for the shell
+	# it will be run during the build, so temporarily (removed in
+	# termux_step_post_make_install below) setup symlink:
+	rm -f $TERMUX_PREFIX/bin/sh
+	ln -s /bin/sh $TERMUX_PREFIX/bin/sh
+
+	(
 		ORIG_AR=$AR; unset AR
 		ORIG_AS=$AS; unset AS
 		ORIG_CC=$CC; unset CC
@@ -51,12 +58,6 @@ termux_step_configure() {
 		ORIG_RANLIB=$RANLIB; unset RANLIB
 		ORIG_LD=$LD; unset LD
 
-	# Since we specify $TERMUX_PREFIX/bin/sh below for the shell
-	# it will be run during the build, so temporarily (removed in
-	# termux_step_post_make_install below) setup symlink:
-	rm -f $TERMUX_PREFIX/bin/sh
-	ln -s /bin/sh $TERMUX_PREFIX/bin/sh
-
 		cd $TERMUX_PKG_BUILDDIR
 		$TERMUX_PKG_SRCDIR/configure \
 			--target=$TERMUX_HOST_PLATFORM \
@@ -69,6 +70,7 @@ termux_step_configure() {
 			-Dar="$ORIG_AR" \
 			-Duseshrplib \
 			-Dusethreads
+	)
 }
 
 termux_step_post_make_install() {