As of commit r149007 (enabling -Werror when building with language Ada), I get
these errors on current cygwin:
/usr/local/src/trunk/objdir/./prev-gcc/xgcc
-B/usr/local/src/trunk/objdir/./prev-gcc/ -B/usr/local/i686-pc-cygwin/bin/
-B/usr/local/i686-pc-cygwin/bin/ -B/usr/local/i686-pc-cygwin/lib/ -isystem
/usr/local/i686-pc-cygwin/include -isystem
/usr/local/i686-pc-cygwin/sys-include -c -g -O2 -DIN_GCC -W -Wall
-Wwrite-strings -Wcast-qual -Wstrict-prototypes -Wmissing-prototypes
-Wmissing-format-attribute -Wno-long-long -Wno-variadic-macros
-Wno-overlength-strings -Werror -Wold-style-definition -Wc++-compat -fno-common
-DHAVE_CONFIG_H -I. -Iada -I../../gcc/gcc -I../../gcc/gcc/ada
-I../../gcc/gcc/../include -I../../gcc/gcc/../libcpp/include -Iyes/include
-I../../gcc/gcc/../libdecnumber -I../../gcc/gcc/../libdecnumber/dpd
-I../libdecnumber ../../gcc/gcc/ada/cstreams.c -o ada/cstreams.o
cc1: warnings being treated as errors
In file included from ../../gcc/gcc/ada/cstreams.c:47:0:
../../gcc/gcc/ada/adaint.h:58:0: error: "FOPEN" redefined
/usr/include/sys/_default_fcntl.h:95:0: note: this is the location of the
previous definition
make[3]: *** [ada/cstreams.o] Error 1
/usr/local/src/trunk/objdir/./prev-gcc/xgcc
-B/usr/local/src/trunk/objdir/./prev-gcc/ -B/usr/local/i686-pc-cygwin/bin/
-B/usr/local/i686-pc-cygwin/bin/ -B/usr/local/i686-pc-cygwin/lib/ -isystem
/usr/local/i686-pc-cygwin/include -isystem
/usr/local/i686-pc-cygwin/sys-include -c -g -O2 -DIN_GCC -W -Wall
-Wwrite-strings -Wcast-qual -Wstrict-prototypes -Wmissing-prototypes
-Wmissing-format-attribute -Wno-long-long -Wno-variadic-macros
-Wno-overlength-strings -Werror -Wold-style-definition -Wc++-compat -fno-common
-DHAVE_CONFIG_H \
-I. -Iada -I../../gcc/gcc -I../../gcc/gcc/ada
-I../../gcc/gcc/../include -I../../gcc/gcc/../libcpp/include -Iyes/include
-I../../gcc/gcc/../libdecnumber -I../../gcc/gcc/../libdecnumber/dpd
-I../libdecnumber -I. -Iada -I../../gcc/gcc -I../../gcc/gcc/ada
-I../../gcc/gcc/../include -I../../gcc/gcc/../libcpp/include -Iyes/include
-I../../gcc/gcc/../libdecnumber -I../../gcc/gcc/../libdecnumber/dpd
-I../libdecnumber ../../gcc/gcc/ada/cio.c -o ada/cio.o
cc1: warnings being treated as errors
In file included from ../../gcc/gcc/ada/cio.c:41:0:
../../gcc/gcc/ada/adaint.h:58:0: error: "FOPEN" redefined
/usr/include/sys/_default_fcntl.h:95:0: note: this is the location of the
previous definition
make[3]: *** [ada/cio.o] Error 1
/usr/local/src/trunk/objdir/./prev-gcc/xgcc
-B/usr/local/src/trunk/objdir/./prev-gcc/ -B/usr/local/i686-pc-cygwin/bin/
-B/usr/local/i686-pc-cygwin/bin/ -B/usr/local/i686-pc-cygwin/lib/ -isystem
/usr/local/i686-pc-cygwin/include -isystem
/usr/local/i686-pc-cygwin/sys-include -c -g -O2 -DIN_GCC -W -Wall
-Wwrite-strings -Wcast-qual -Wstrict-prototypes -Wmissing-prototypes
-Wmissing-format-attribute -Wno-long-long -Wno-variadic-macros
-Wno-overlength-strings -Werror -Wold-style-definition -Wc++-compat -fno-common
-DHAVE_CONFIG_H \
-I. -Iada -I../../gcc/gcc -I../../gcc/gcc/ada
-I../../gcc/gcc/../include -I../../gcc/gcc/../libcpp/include -Iyes/include
-I../../gcc/gcc/../libdecnumber -I../../gcc/gcc/../libdecnumber/dpd
-I../libdecnumber -I. -Iada -I../../gcc/gcc -I../../gcc/gcc/ada
-I../../gcc/gcc/../include -I../../gcc/gcc/../libcpp/include -Iyes/include
-I../../gcc/gcc/../libdecnumber -I../../gcc/gcc/../libdecnumber/dpd
-I../libdecnumber ../../gcc/gcc/ada/cio.c -o ada/cio.o
cc1: warnings being treated as errors
In file included from ../../gcc/gcc/ada/cio.c:41:0:
../../gcc/gcc/ada/adaint.h:58:0: error: "FOPEN" redefined
/usr/include/sys/_default_fcntl.h:95:0: note: this is the location of the
previous definition
make[3]: *** [ada/cio.o] Error 1
/usr/local/src/trunk/objdir/./prev-gcc/xgcc
-B/usr/local/src/trunk/objdir/./prev-gcc/ -B/usr/local/i686-pc-cygwin/bin/
-B/usr/local/i686-pc-cygwin/bin/ -B/usr/local/i686-pc-cygwin/lib/ -isystem
/usr/local/i686-pc-cygwin/include -isystem
/usr/local/i686-pc-cygwin/sys-include -c -g -O2 -DIN_GCC -W -Wall
-Wwrite-strings -Wcast-qual -Wstrict-prototypes -Wmissing-prototypes
-Wmissing-format-attribute -Wno-long-long -Wno-variadic-macros
-Wno-overlength-strings -Werror -Wold-style-definition -Wc++-compat -fno-common
-DHAVE_CONFIG_H \
-I. -Iada -I../../gcc/gcc -I../../gcc/gcc/ada
-I../../gcc/gcc/../include -I../../gcc/gcc/../libcpp/include -Iyes/include
-I../../gcc/gcc/../libdecnumber -I../../gcc/gcc/../libdecnumber/dpd
-I../libdecnumber -I. -Iada -I../../gcc/gcc -I../../gcc/gcc/ada
-I../../gcc/gcc/../include -I../../gcc/gcc/../libcpp/include -Iyes/include
-I../../gcc/gcc/../libdecnumber -I../../gcc/gcc/../libdecnumber/dpd
-I../libdecnumber ../../gcc/gcc/ada/raise.c -o ada/raise.o
cc1: warnings being treated as errors
In file included from ../../gcc/gcc/ada/raise.c:46:0:
../../gcc/gcc/ada/adaint.h:58:0: error: "FOPEN" redefined
/usr/include/sys/_default_fcntl.h:95:0: note: this is the location of the
previous definition
make[3]: *** [ada/raise.o] Error 1
/usr/local/src/trunk/objdir/./prev-gcc/xgcc
-B/usr/local/src/trunk/objdir/./prev-gcc/ -B/usr/local/i686-pc-cygwin/bin/
-B/usr/local/i686-pc-cygwin/bin/ -B/usr/local/i686-pc-cygwin/lib/ -isystem
/usr/local/i686-pc-cygwin/include -isystem
/usr/local/i686-pc-cygwin/sys-include -c -g -O2 -DIN_GCC -W -Wall
-Wwrite-strings -Wcast-qual -Wstrict-prototypes -Wmissing-prototypes
-Wmissing-format-attribute -Wno-long-long -Wno-variadic-macros
-Wno-overlength-strings -Werror -Wold-style-definition -Wc++-compat -fno-common
-DHAVE_CONFIG_H \
-I. -Iada -I../../gcc/gcc -I../../gcc/gcc/ada
-I../../gcc/gcc/../include -I../../gcc/gcc/../libcpp/include -Iyes/include
-I../../gcc/gcc/../libdecnumber -I../../gcc/gcc/../libdecnumber/dpd
-I../libdecnumber -I. -Iada -I../../gcc/gcc -I../../gcc/gcc/ada
-I../../gcc/gcc/../include -I../../gcc/gcc/../libcpp/include -Iyes/include
-I../../gcc/gcc/../libdecnumber -I../../gcc/gcc/../libdecnumber/dpd
-I../libdecnumber ../../gcc/gcc/ada/raise.c -o ada/raise.o
cc1: warnings being treated as errors
In file included from ../../gcc/gcc/ada/raise.c:46:0:
../../gcc/gcc/ada/adaint.h:58:0: error: "FOPEN" redefined
/usr/include/sys/_default_fcntl.h:95:0: note: this is the location of the
previous definition
make[3]: *** [ada/raise.o] Error 1
/usr/local/src/trunk/objdir/./prev-gcc/xgcc
-B/usr/local/src/trunk/objdir/./prev-gcc/ -B/usr/local/i686-pc-cygwin/bin/
-B/usr/local/i686-pc-cygwin/bin/ -B/usr/local/i686-pc-cygwin/lib/ -isystem
/usr/local/i686-pc-cygwin/include -isystem
/usr/local/i686-pc-cygwin/sys-include -c -g -O2 -DIN_GCC -W -Wall
-Wwrite-strings -Wcast-qual -Wstrict-prototypes -Wmissing-prototypes
-Wmissing-format-attribute -Wno-long-long -Wno-variadic-macros
-Wno-overlength-strings -Werror -Wold-style-definition -Wc++-compat -fno-common
-DHAVE_CONFIG_H -I. -Iada -I../../gcc/gcc -I../../gcc/gcc/ada
-I../../gcc/gcc/../include -I../../gcc/gcc/../libcpp/include -Iyes/include
-I../../gcc/gcc/../libdecnumber -I../../gcc/gcc/../libdecnumber/dpd
-I../libdecnumber ../../gcc/gcc/ada/exit.c -o ada/exit.o
cc1: warnings being treated as errors
In file included from ../../gcc/gcc/ada/exit.c:45:0:
../../gcc/gcc/ada/adaint.h:58:0: error: "FOPEN" redefined
/usr/include/sys/_default_fcntl.h:95:0: note: this is the location of the
previous definition
make[3]: *** [ada/exit.o] Error 1
--
Summary: FOPEN double defined used in ada/adaint.h:58
Product: gcc
Version: 4.5.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: bootstrap
AssignedTo: unassigned at gcc dot gnu dot org
ReportedBy: christian dot joensson at gmail dot com
GCC build triplet: i686-pc-cygwin
GCC host triplet: i686-pc-cygwin
GCC target triplet: i686-pc-cygwin
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=40578
