Specify output explicitly for the .c.o compile rule

newlib/Makefile.in

 # Makefile.in generated by automake 1.11.6 from Makefile.am.
 # @configure_input@
 
 # Copyright (C) 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002,
 # 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011 Free Software
 # Foundation, Inc.
 # This Makefile.in is free software; the Free Software Foundation
 # gives unlimited permission to copy and/or distribute it,
 # with or without modifications, as long as this notice is preserved.
 
@@ skipping 369 matching lines @@
 tooldir = $(exec_prefix)/$(host_alias)
 toollibdir = $(tooldir)/lib$(MULTISUBDIR)
 AR_FLAGS = rc
 @USE_LIBTOOL_TRUE@toollib_LTLIBRARIES = libm.la \
 @USE_LIBTOOL_TRUE@      libc.la
 
 @USE_LIBTOOL_FALSE@toollib_LIBRARIES = libm.a \
 @USE_LIBTOOL_FALSE@     libc.a
 
 noinst_DATA = stmp-targ-include
-toollib_DATA = $(CRT0) $(CRT1)
+toollib_DATA = $(wildcard $(CRT0)) $(CRT1)
 
 # The functions ldexp, frexp and modf are traditionally supplied in
 # both libc.a and libm.a.  We build them in libm.a and copy them over,
 # along with some required supporting routines.
 MATHOBJS_IN_LIBC = \
         $(lpfx)s_fpclassify.$(oext) $(lpfx)sf_fpclassify.$(oext) \
         $(lpfx)s_isinf.$(oext) $(lpfx)sf_isinf.$(oext) \
         $(lpfx)s_isnan.$(oext) $(lpfx)sf_isnan.$(oext) \
         $(lpfx)s_isinfd.$(oext) $(lpfx)sf_isinff.$(oext) \
         $(lpfx)s_isnand.$(oext) $(lpfx)sf_isnanf.$(oext) \
@@ skipping 515 matching lines @@
 @USE_LIBTOOL_FALSE@     rm -rf tmp
 
 @USE_LIBTOOL_FALSE@libc/libc.a: ; @true
 
 @USE_LIBTOOL_FALSE@libm.a: libm/libm.a
 @USE_LIBTOOL_FALSE@     rm -f $@
 @USE_LIBTOOL_FALSE@     ln libm/libm.a $@ >/dev/null 2>/dev/null || cp libm/libm.a $@
 
 @USE_LIBTOOL_FALSE@libm/libm.a: ; @true
 
-crt0.o: $(CRT0_DIR)$(CRT0)
+crt0.o: $(wildcard $(CRT0_DIR)$(CRT0))
         rm -f $@
-        ln $(CRT0_DIR)$(CRT0) $@ >/dev/null 2>/dev/null \
-         || cp $(CRT0_DIR)$(CRT0) $@
+        if test -f $(CRT0_DIR)$(CRT0); then ln $(CRT0_DIR)$(CRT0) $@ >/dev/null 2>/dev/null \
+         || cp $(CRT0_DIR)$(CRT0) $@; fi
 
 $(CRT0_DIR)$(CRT0): ; @true
 
 crt1.o: $(CRT1_DIR)$(CRT1)
         rm -f $@
         ln $< $@ >/dev/null 2>/dev/null \
          || cp $< $@
 
 $(CRT1_DIR)$(CRT1): ; @true
 
@@ skipping 232 matching lines @@
         else \
            echo "WARNING: could not find \`runtest'" 1>&2 ; \
         fi
 
 clean-local:
         -rm -rf targ-include
 
 # Tell versions [3.59,3.63) of GNU make to not export all variables.
 # Otherwise a system limit (for SysV at least) may be exceeded.
 .NOEXPORT: