[Bug bootstrap/53343] [4.8 regression] options.c:9944:1: error: no previous prototype for 'common_handle_option_auto' breaks bootstrap

[manu at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53343

Manuel López-Ibáñez <manu at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |manu at gcc dot gnu.org

--- Comment #2 from Manuel López-Ibáñez <manu at gcc dot gnu.org> 2012-05-15 12:05:16 UTC ---
This is the successful compilation line in x86_64-unknown-linux-gnu:

/home/manuel/test2/187462M/build/./prev-gcc/g++
-B/home/manuel/test2/187462M/build/./prev-gcc/
-B/home/manuel/test2/./187462M/install/x86_64-unknown-linux-gnu/bin/
-nostdinc++
-B/home/manuel/test2/187462M/build/prev-x86_64-unknown-linux-gnu/libstdc++-v3/src/.libs
-B/home/manuel/test2/187462M/build/prev-x86_64-unknown-linux-gnu/libstdc++-v3/libsupc++/.libs
-I/home/manuel/test2/187462M/build/prev-x86_64-unknown-linux-gnu/libstdc++-v3/include/x86_64-unknown-linux-gnu
-I/home/manuel/test2/187462M/build/prev-x86_64-unknown-linux-gnu/libstdc++-v3/include
-I/home/manuel/test2/src/libstdc++-v3/libsupc++
-L/home/manuel/test2/187462M/build/prev-x86_64-unknown-linux-gnu/libstdc++-v3/src/.libs
-L/home/manuel/test2/187462M/build/prev-x86_64-unknown-linux-gnu/libstdc++-v3/libsupc++/.libs
-c   -g -O2 -gtoggle -DIN_GCC   -fno-exceptions -fno-rtti -W -Wall
-Wno-narrowing -Wwrite-strings -Wcast-qual -Wmissing-format-attribute -pedantic
-Wno-long-long -Wno-variadic-macros -Wno-overlength-strings -Werror -fno-common
 -DHAVE_CONFIG_H -I. -I. -I/home/manuel/test2/src/gcc
-I/home/manuel/test2/src/gcc/. -I/home/manuel/test2/src/gcc/../include
-I/home/manuel/test2/src/gcc/../libcpp/include -I/opt/cfarm/mpfr-2.4.1//include
-I/opt/cfarm/mpc-0.8/include  -I/home/manuel/test2/src/gcc/../libdecnumber
-I/home/manuel/test2/src/gcc/../libdecnumber/bid -I../libdecnumber    options.c
-o options.o

So g++ is missing -Wmissing-prototypes (actually, -Wmissing-declarations). see
PR 50134.

Not sure what is the best way to fix this. 

Declare also the functions in options.c? 

Including options.h in options.c is maybe problematic.