Le 11/05/2023 à 23:04, Enrico Forestieri a écrit :
Anyway, I don't think the autoconf test is broken because:
From what I read here:
https://gcc.gnu.org/onlinedocs/libstdc++/manual/using_dual_abi.html
this define is merely a default. It looks like one can choose to change
it, as long as all the libraries you use (e.g. Qt) do the same.
I have not been able to find the relevant git commit explining why this
was done.
JMarc
$ diff -up
/usr/lib/gcc/x86_64-pc-cygwin/11/include/c++/x86_64-pc-cygwin/bits/c++config.h /usr/lib/gcc/x86_64-w64-mingw32/11/include/c++/x86_64-w64-mingw32/bits/c++config.h | grep -C1 _GLIBCXX_USE_CXX11_ABI
#ifndef _GLIBCXX_USE_CXX11_ABI
-# define _GLIBCXX_USE_CXX11_ABI 0
+# define _GLIBCXX_USE_CXX11_ABI 1
#endif
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