Hi,
On Sun, 17 Jan 2021, Sandro Mani wrote:
I'm working on updating the mingw toolchain for Fedora, and am building
mingw-gcc-11 with mingw-crt-8.0.0. I'm stuck at this error when linking
libgcc [1]:
/usr/i686-w64-mingw32/bin/ld: _ctors_s.o:libgcc2.c:(.bss+0x0): multiple
definition of `__DTOR_LIST__';
/usr/i686-w64-mingw32/sys-root/mingw/lib/../lib/dllcrt2.o:crtdll.c:(.dtors+0x0):
first defined here
/usr/i686-w64-mingw32/bin/ld: _ctors_s.o:libgcc2.c:(.bss+0x8): multiple
definition of `__CTOR_LIST__';
/usr/i686-w64-mingw32/sys-root/mingw/lib/../lib/dllcrt2.o:crtdll.c:(.ctors+0x0):
first defined here
Indeed, I see
mingw-w64-crt/crt/crtdll.c:__attribute__ (( __section__ (".dtors"), __used__
, aligned(sizeof(void *)))) const void * __DTOR_LIST__ = (void *) -1;
mingw-w64-crt/crt/crtdll.c:__attribute__ (( __section__ (".ctors"), __used__
, aligned(sizeof(void *)))) const void * __CTOR_LIST__ = (void *) -1;
These are within an #ifndef HAVE_CTOR_LIST. During configure (of
mingw-w64-crt), there's an "checking whether the linker provides
__CTOR_LIST__... yes". If you're running into such an error, it sounds to
me like this test didn't produce the expected result in your case. Can you
have a look in the config.log why it didn't behave as expected?
At this point, this check is only needed for compatibiltiy with LLD 7 and
earlier (2 years ago). We could also conclude that it was early times for
LLD's mingw compatibility and we could safely drop compatibility with it
now.
// Martin
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