[newlib-cygwin] Fix elf-nano.specs to work without -save-temps

[newlib-cygwin] Fix elf-nano.specs to work without -save-temps

[Corinna Vinschen]

https://sourceware.org/git/gitweb.cgi?p=newlib-cygwin.git;h=be5926babbfb23ded1de2181a7524b8c3eebe34c

commit be5926babbfb23ded1de2181a7524b8c3eebe34c
Author: Thomas Preud'homme <thomas.preudhomme@arm.com>
Date:   Wed Feb 15 10:51:54 2017 +0000

    Fix elf-nano.specs to work without -save-temps
    
    The changes in af272aca591fe1dc0f1be64ae5bda147ea98a047 only works when
    using gcc/g++ with -E or -save-temps, otherwise newlib's newlib.h gets
    used even if -specs=nano.specs is specified. This is because the driver
    only use cpp_options spec for the external cpp tool, not for the
    integrated one.
    
    This patch uses instead cpp_unique_options which is used in all cases:
    it is used directly when the integrated preprocessor is used, and
    indirectly by expansion of cpp_options otherwise.

Diff:
---
 libgloss/arm/elf-nano.specs | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/libgloss/arm/elf-nano.specs b/libgloss/arm/elf-nano.specs
index 324107e..82594bd 100644
--- a/libgloss/arm/elf-nano.specs
+++ b/libgloss/arm/elf-nano.specs
@@ -1,9 +1,9 @@
 %rename link                nano_link
 %rename link_gcc_c_sequence                nano_link_gcc_c_sequence
-%rename cpp_options		nano_cpp_options
+%rename cpp_unique_options		nano_cpp_unique_options
 
-*cpp_options:
--isystem =/include/newlib-nano %(nano_cpp_options)
+*cpp_unique_options:
+-isystem =/include/newlib-nano %(nano_cpp_unique_options)
 
 *nano_libc:
 -lc_nano