libgcc: problems adding asm sources (libgcc/siditi-object.mk)

[Georg-Johann Lay <avr at gjlay dot de>]

Hi, I intend to add some assembler sources to libgcc build.

Using the straight forward way in ./gcc/config/avr/t-avr

@ -52,7 +50,30 @@ LIB1ASMFUNCS = \
...
+       _ffssi2 \
+       _ffshi2 \
+       _loop_ffsqi2 \
+       _ctzsi2 \
+       _ctzhi2 \
+       _clzdi2 \
+       _clzsi2 \
+       _clz \
+       _paritydi2 \
+       _paritysi2 \
+       _parityhi2 \
+       _popcounthi2 \
+       _popcountsi2 \
+       _popcountdi2 \
+       _popcountqi2 \
+       _bswapsi2 \
+       _bswapdi2

all works fine except that I get warnings from make for hi functions:

(in <build>/avr/ligbcc)

Makefile:375: warning: overriding commands for target `_ffshi2.o'
../../../../gcc.gnu.org/trunk/libgcc/siditi-object.mk:15: warning:
ignoring old commands for target `_ffshi2.o'
Makefile:375: warning: overriding commands for target `_ctzhi2.o'
../../../../gcc.gnu.org/trunk/libgcc/siditi-object.mk:15: warning:
ignoring old commands for target `_ctzhi2.o'
Makefile:375: warning: overriding commands for target `_parityhi2.o'
../../../../gcc.gnu.org/trunk/libgcc/siditi-object.mk:15: warning:
ignoring old commands for target `_parityhi2.o'
Makefile:375: warning: overriding commands for target `_popcounthi2.o'
../../../../gcc.gnu.org/trunk/libgcc/siditi-object.mk:15: warning:
ignoring old commands for target `_popcounthi2.o'
make: `_clzhi2.o' is up to date.

Am I something missing? Adding fragments to LIB1ASMFUNCS should filter
them out in filter-out.

Adding these function to LIB2FUNCS_EXCLUDE does not help; the warnings
persist (I see correct LIB2FUNCS_EXCLUDE in ./gcc/libgcc.mvars).

Setup is with current trunk (175011):

../../gcc.gnu.org/trunk/configure --target=avr
--prefix=/local/gnu/install/gcc-4.7 --disable-nls --disable-shared
--enable-languages=c,c++


Johann