when repo /target exists, out of source build still works

Author: XrXr

template/Makefile.in

@@ -112,7 +112,7 @@ ZJIT_OBJ=@ZJIT_OBJ@
 RUST_JIT_SUPPORT=@RUST_JIT_SUPPORT@
 CARGO_TARGET_DIR=@abs_top_builddir@/target
 CARGO_BUILD_ARGS=@CARGO_BUILD_ARGS@
-RUST_LIB=@RUST_LIB@
+RUST_LIB=@abs_top_builddir@/@RUST_LIB@
 RUST_LIBOBJ = $(RUST_LIB:.a=.@OBJEXT@)
 LDFLAGS = @STATIC@ $(CFLAGS) @LDFLAGS@
 EXE_LDFLAGS = $(LDFLAGS)