[Bug bootstrap/98300] New: GCC 11 failed to build on Windows 10. I guess the new module completely breaks this.

["euloanty at live dot com" <gcc-bugzilla@gcc.gnu.org>]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=98300

            Bug ID: 98300
           Summary: GCC 11 failed to build on Windows 10. I guess the new
                    module completely breaks this.
           Product: gcc
           Version: 11.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: bootstrap
          Assignee: unassigned at gcc dot gnu.org
          Reporter: euloanty at live dot com
  Target Milestone: ---

x86_64-w64-mingw32-g++  -fno-PIE -c  -DIN_GCC_FRONTEND -march=x86-64
-mtune=generic -O2 -pipe -DIN_GCC     -fno-exceptions -fno-rtti
-fasynchronous-unwind-tables -W -Wall -Wno-narrowing -Wwrite-strings
-Wcast-qual -Wno-error=format-diag -Wmissing-format-attribute
-Woverloaded-virtual -pedantic -Wno-long-long -Wno-variadic-macros
-Wno-overlength-strings   -DHAVE_CONFIG_H -I. -Icp -I../../gcc-git/gcc
-I../../gcc-git/gcc/cp -I../../gcc-git/gcc/../include
-I../../gcc-git/gcc/../libcpp/include -I../../gcc-git/gcc/../libcody
-I/mingw64/include -I/mingw64/include -I/mingw64/include 
-I../../gcc-git/gcc/../libdecnumber -I../../gcc-git/gcc/../libdecnumber/bid
-I../libdecnumber -I../../gcc-git/gcc/../libbacktrace -I/mingw64/include
-D__USE_MINGW_ANSI_STDIO=1 -I/mingw64/include -o cp/name-lookup.o -MT
cp/name-lookup.o -MMD -MP -MF cp/.deps/name-lookup.TPo
../../gcc-git/gcc/cp/name-lookup.c
In file included from ../../gcc-git/gcc/cp/mapper-resolver.cc:27:
../../gcc-git/gcc/cp/../../c++tools/resolver.cc:31:10: fatal error: sys/mman.h:
No such file or directory
   31 | #include <sys/mman.h>
      |          ^~~~~~~~~~~~
compilation terminated.
make[2]: *** [Makefile:1127: cp/mapper-resolver.o] Error 1
make[2]: *** Waiting for unfinished jobs....
../../gcc-git/gcc/cp/mapper-client.cc: In static member function 'static
module_client* module_client::open_module_client(location_t, const char*, void
(*)(const char*), const char*)':
../../gcc-git/gcc/cp/mapper-client.cc:171:42: error: 'O_CLOEXEC' was not
declared in this scope
  171 |                               ? O_RDWR | O_CLOEXEC : O_RDONLY |
O_CLOEXEC;
      |                                          ^~~~~~~~~
../../gcc-git/gcc/cp/mapper-client.cc:188:42: error: 'O_CLOEXEC' was not
declared in this scope
  188 |                               ? O_RDWR | O_CLOEXEC : O_WRONLY |
O_CLOEXEC;
      |                                          ^~~~~~~~~
../../gcc-git/gcc/cp/mapper-client.cc:260:50: error: 'O_CLOEXEC' was not
declared in this scope
  260 |         int fd = open (name.c_str (), O_RDONLY | O_CLOEXEC);
      |                                                  ^~~~~~~~~
make[2]: *** [Makefile:1127: cp/mapper-client.o] Error 1
../../gcc-git/gcc/cp/module.cc: In member function 'void
bytes_out::printf(const char*, ...)':
../../gcc-git/gcc/cp/module.cc:1088:56: warning: function 'void
bytes_out::printf(const char*, ...)' might be a candidate for 'gnu_printf'
format attribute [-Wsuggest-attribute=format]
 1088 |       size_t actual = vsnprintf (ptr, len, format, args) + 1;
      |                                                        ^
../../gcc-git/gcc/cp/module.cc: In member function 'const char*
elf_in::read(data*, unsigned int, unsigned int)':
../../gcc-git/gcc/cp/module.cc:1659:45: warning: comparison of integer
expressions of different signedness: 'int' and 'unsigned int' [-Wsign-compare]
 1659 |   if (::read (fd, data->buffer, data->size) != length)
      |       ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~
../../gcc-git/gcc/cp/module.cc: In member function 'unsigned int
elf_out::write(const data&)':
../../gcc-git/gcc/cp/module.cc:2051:47: warning: comparison of integer
expressions of different signedness: 'int' and 'const unsigned int'
[-Wsign-compare]
 2051 |   if (::write (fd, buffer.buffer, buffer.pos) != buffer.pos)
      |       ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~
../../gcc-git/gcc/cp/module.cc:2066:40: warning: comparison of integer
expressions of different signedness: 'int' and 'unsigned int' [-Wsign-compare]
 2066 |       if (::write (fd, &zero, padding) != padding)
      |           ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~
rm gfdl.pod gcc.pod gcov-dump.pod gcov-tool.pod fsf-funding.pod gpl.pod cpp.pod
gcov.pod lto-dump.pod
make[2]: Leaving directory
'/home/unlvs/mingw-gcc-mcf-gthread/src/build-x86_64-w64-mingw32/gcc'
make[1]: *** [Makefile:4446: all-gcc] Error 2
make[1]: Leaving directory
'/home/unlvs/mingw-gcc-mcf-gthread/src/build-x86_64-w64-mingw32'
make: *** [Makefile:973: all] Error 2
==> ERROR: A failure occurred in build().
    Aborting...