For the sake of completeness...
Bootstrapping trunk r199624 fails on Cygwin as follows:
$ /work/gcc-trunk-r199624/configure --prefix=/usr/local/gfortran
--program-suffix=-4.9 --enable-languages=c,c++,fortran
--enable-checking=release --enable-threads=posix --enable-libgomp
--enable-bootstrap --with-arch=native --with-tune=native
--with-fpmath=sse --disable-libmudflap --disable-shared
$ make -j3
[...]
/work/gcc-trunk-r199624/Work/./prev-gcc/xg++
-B/work/gcc-trunk-r199624/Work/./prev-gcc/
-B/usr/local/gfortran/i686-pc-cygwin/bin/ -nostdinc++
-B/work/gcc-trunk-r199624/Work/prev-i686-pc-cygwin/libstdc++-v3/src/.libs
-B/work/gcc-trunk-r199624/Work/prev-i686-pc-cygwin/libstdc++-v3/libsupc++/.libs
-I/work/gcc-trunk-r199624/Work/prev-i686-pc-cygwin/libstdc++-v3/include/i686-pc-cygwin
-I/work/gcc-trunk-r199624/Work/prev-i686-pc-cygwin/libstdc++-v3/include
-I/work/gcc-trunk-r199624/libstdc++-v3/libsupc++
-L/work/gcc-trunk-r199624/Work/prev-i686-pc-cygwin/libstdc++-v3/src/.libs
-L/work/gcc-trunk-r199624/Work/prev-i686-pc-cygwin/libstdc++-v3/libsupc++/.libs
-c -g -O2 -gtoggle -DIN_GCC -fno-exceptions -fno-rtti
-fasynchronous-unwind-tables -W -Wall -Wno-narrowing -Wwrite-strings
-Wcast-qual -Wmissing-format-attribute -pedantic -Wno-long-long
-Wno-variadic-macros -Wno-overlength-strings -Werror -DHAVE_CONFIG_H
-I. -I. -I/work/gcc-trunk-r199624/gcc -I/work/gcc-trunk-r199624/gcc/.
-I/work/gcc-trunk-r199624/gcc/../include
-I/work/gcc-trunk-r199624/gcc/../libcpp/include
-I/work/gcc-trunk-r199624/gcc/../libdecnumber
-I/work/gcc-trunk-r199624/gcc/../libdecnumber/bid -I../libdecnumber
-I/work/gcc-trunk-r199624/gcc/../libbacktrace -I. -I.
-I/work/gcc-trunk-r199624/gcc -I/work/gcc-trunk-r199624/gcc/.
-I/work/gcc-trunk-r199624/gcc/../include
-I/work/gcc-trunk-r199624/gcc/../libcpp/include
-I/work/gcc-trunk-r199624/gcc/../libdecnumber
-I/work/gcc-trunk-r199624/gcc/../libdecnumber/bid -I../libdecnumber
-I/work/gcc-trunk-r199624/gcc/../libbacktrace \
/work/gcc-trunk-r199624/gcc/config/i386/winnt.c
/work/gcc-trunk-r199624/Work/./prev-gcc/xg++
-B/work/gcc-trunk-r199624/Work/./prev-gcc/
-B/usr/local/gfortran/i686-pc-cygwin/bin/ -nostdinc++
-B/work/gcc-trunk-r199624/Work/prev-i686-pc-cygwin/libstdc++-v3/src/.libs
-B/work/gcc-trunk-r199624/Work/prev-i686-pc-cygwin/libstdc++-v3/libsupc++/.libs
-I/work/gcc-trunk-r199624/Work/prev-i686-pc-cygwin/libstdc++-v3/include/i686-pc-cygwin
-I/work/gcc-trunk-r199624/Work/prev-i686-pc-cygwin/libstdc++-v3/include
-I/work/gcc-trunk-r199624/libstdc++-v3/libsupc++
-L/work/gcc-trunk-r199624/Work/prev-i686-pc-cygwin/libstdc++-v3/src/.libs
-L/work/gcc-trunk-r199624/Work/prev-i686-pc-cygwin/libstdc++-v3/libsupc++/.libs
-c -g -O2 -gtoggle -DIN_GCC -fno-exceptions -fno-rtti
-fasynchronous-unwind-tables -W -Wall -Wno-narrowing -Wwrite-strings
-Wcast-qual -Wmissing-format-attribute -pedantic -Wno-long-long
-Wno-variadic-macros -Wno-overlength-strings -Werror -DHAVE_CONFIG_H
-I. -I. -I/work/gcc-trunk-r199624/gcc -I/work/gcc-trunk-r199624/gcc/.
-I/work/gcc-trunk-r199624/gcc/../include
-I/work/gcc-trunk-r199624/gcc/../libcpp/include
-I/work/gcc-trunk-r199624/gcc/../libdecnumber
-I/work/gcc-trunk-r199624/gcc/../libdecnumber/bid -I../libdecnumber
-I/work/gcc-trunk-r199624/gcc/../libbacktrace -I. -I.
-I/work/gcc-trunk-r199624/gcc -I/work/gcc-trunk-r199624/gcc/.
-I/work/gcc-trunk-r199624/gcc/../include
-I/work/gcc-trunk-r199624/gcc/../libcpp/include
-I/work/gcc-trunk-r199624/gcc/../libdecnumber
-I/work/gcc-trunk-r199624/gcc/../libdecnumber/bid -I../libdecnumber
-I/work/gcc-trunk-r199624/gcc/../libbacktrace \
/work/gcc-trunk-r199624/gcc/config/i386/winnt-stubs.c
/work/gcc-trunk-r199624/gcc/config/i386/winnt.c: In function ‘unsigned
int i386_pe_section_type_flags(tree, const char*, int)’:
/work/gcc-trunk-r199624/gcc/config/i386/winnt.c:483:42: error: cast from
type ‘const char*’ to type ‘unsigned int*’ casts away qualifiers
[-Werror=cast-qual]
slot = htab.find_slot ((unsigned int *)name, INSERT);
^
cc1plus: all warnings being treated as errors
/work/gcc-trunk-r199624/gcc/config/i386/t-cygming:26: recipe for target
`winnt.o' failed
make[3]: *** [winnt.o] Error 1
make[3]: *** Attesa per i processi non terminati....
rm gcov.pod gfdl.pod cpp.pod gfortran.pod gcc.pod fsf-funding.pod
make[3]: uscita dalla directory "/work/gcc-trunk-r199624/Work/gcc"
Makefile:4195: recipe for target `all-stage2-gcc' failed
make[2]: *** [all-stage2-gcc] Error 2
make[2]: uscita dalla directory "/work/gcc-trunk-r199624/Work"
Makefile:18070: recipe for target `stage2-bubble' failed
make[1]: *** [stage2-bubble] Error 2
make[1]: uscita dalla directory "/work/gcc-trunk-r199624/Work"
Makefile:884: recipe for target `all' failed
make: *** [all] Error 2
Maybe these recent changes,
http://gcc.gnu.org/viewcvs/gcc/trunk/gcc/config/i386/winnt.c?view=log
have broken it (about a week ago GCC trunk bootstrapped fine on Cygwin)...
Ciao,
Angelo.
