On 1/10/2019 5:00 AM, Tempelaar E. (Erik) wrote:
I recently reconfigured a build environment for a mingw-built application but I
ran into issues
on Windows 10 caused by a #define _WIN32_WINNT in
C:\msys64\mingw32\i686-w64-mingw32\include\_mingw.h
In my installation it targets WINNT 0x0601
#ifndef _WIN32_WINNT
#define _WIN32_WINNT 0x601
#endif
My colleague's setup targets 0x0502.
In my understanding 0x0502 is still the default:
https://mingw-w64.org/doku.php/configure
https://github.com/mirror/mingw-w64/blob/d72c4fe62568a216d52dca47ca8bace4e220d84f/mingw-w64-headers/configure.ac#L156
I installed msys2-x86_64-20161025.exe and updated via pacman and installed i.e.
base-devel and pacman -S mingw-w64-i686-gcc.
How could I have ended up with 0x0601?
I don't have an answer for this but ...
What's the recommended way to control this and prevent issues like this?
Store an archive of msys2/mingw32 somewhere?
Add -D_WIN32_WINNT=0x0502 to our makefile?
Never depend on defaults set the base system you want to support. You
can do that as you've indicated by the Makefile or in a preliminary
header that is included by all sources.
Here's a (subset) of possible updates for my colleague's setup, my guess is
that the change is in one of these:
mingw-w64-i686-ca-certificates 20170211-2 -> 20180409-1
mingw-w64-i686-crt-git 6.0.0.5176.1fd1a585-1 -> 7.0.0.5285.7b2baaf8-1
mingw-w64-i686-expat 2.2.5-1 -> 2.2.6-1
mingw-w64-i686-gcc 7.3.0-2 -> 7.4.0-1
mingw-w64-i686-gcc-libs 7.3.0-2 -> 7.4.0-1
mingw-w64-i686-gdb 8.1-3 -> 8.2.1-1
mingw-w64-i686-gettext 0.19.8.1-4 -> 0.19.8.1-7
mingw-w64-i686-headers-git 6.0.0.5176.1fd1a585-1 -> 7.0.0.5285.7b2baaf8-1
mingw-w64-i686-libwinpthread-git 6.0.0.5174.9726fb77-1 -> 7.0.0.5273.3e5acf5d-1
mingw-w64-i686-ncurses 6.1.20180526-1 -> 6.1.20180908-1
mingw-w64-i686-openssl 1.0.2.o-1 -> 1.1.1.a-1
mingw-w64-i686-p11-kit 0.23.12-1 -> 0.23.14-1
mingw-w64-i686-python3 3.7.0-10 -> 3.7.2-1
mingw-w64-i686-sqlite3 3.24.0-1 -> 3.26.0-1
mingw-w64-i686-tcl 8.6.8-1 -> 8.6.9-2
mingw-w64-i686-tk 8.6.8-1 -> 8.6.9.1-1
mingw-w64-i686-winpthreads-git 6.0.0.5174.9726fb77-1 -> 7.0.0.5273.3e5acf5d-1
mingw-w64-i686-zlib 1.2.11-3 -> 1.2.11-5
Please advise, I would like to know how this is supposed to work for
msys2/mingw32
My guess is the -crt-git package but I don't really know which one of
these changed a default. It is a default and every seasoned developer
would tell you not to depend on defaults. The defaults are set to aid
the majority of cases and as Windows and MinGW progresses the defaults
for _WIN32_WINNT are likely to change to indicate where the focus should
be for this project.
--
Earnie
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