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update the note in README.win32 regarding Cygwin licensing 

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(David Allsopp, Olivier Andrieu)
master
David Allsopp 2017-01-23 19:10:12 +01:00 committed by Gabriel Scherer
parent a48b2cb03b
commit 371e06c4ba
1 changed files with 11 additions and 4 deletions
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15
README.win32.adoc
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@ -26,10 +26,17 @@ Here is a summary of the main differences between these ports:
|=====
[[tb1]]
(*):: Cygwin-generated `.exe` files refer to a DLL that is distributed under the
GPL. Thus, these `.exe` files can only be distributed under a license that is
compatible with the GPL. Executables generated by Microsoft Visual C++ or
Mingw-w64 have no such restrictions.
(*):: Executables generated by the native GCC package in Cygwin are linked with
the Cygwin DLL and require this to be distributed with your programs.
Executables generated by Microsoft Visual C++ or the Mingw-w64 compilers (even
when run in Cygwin as `i686-w64-mingw32-gcc` or `x86_64-w64-mingw32-gcc`) are
not linked against this DLL. Prior to Cygwin 2.5.2 (the Cygwin version can be
obtained with `uname -r`) the Cygwin DLL is distributed under the GPL, requiring
any programs linked with it to be distributed under a compatible licence. Since
version 2.5.2, the Cygwin DLL is distributed under the LGPLv3 with a static
linking exception meaning that, like executables generated by Microsoft Visual
C++ or the Mingw-w64 compilers, generated executables may be distributed under
terms of your choosing.
[[tb2]]
(**):: The debugger is supported but the "replay" functions are not enabled.