I'm new to MSYS2 and first time on the mailing list ("Hi!"),
I have installed MSYS2 (x86_64) and install various packages to be used
with a Jenkins CI system. Basically Jenkins clones a branch from a
local git repo, then runs a DOS batch file (yes, I know !!), which sets
up some environment variables for Embarcadero and IAR compilers, then
calls a custom python script to run unit tests and coverage (gcov).
The python script is invoked with
`c:\msys64\mingw64\bin\python3.6m.exe`. It then builds some unit tests
using mingw64-gcc, `c:/msys64/mingw64/bin/g++.exe`, via python's
`subprocess.run()`
This works ok, but I decided that all our production compilers are
32-bit, so it would make sense to run the unit tests with a 32-bit
compiler too. So I changed the the compiler command to:
`c:/msys64/mingw32/bin/g++.exe`, which FAILS to run !! DLL errors
(`libwinpthread*`, etc).
If I invoke the 32-bit python executable
(`c:\msys64\mingw64\bin\python3.6m.exe`) then all is good, but of course
I can't run 64-bit programs (e.g. `c:/msys64/mingw64/bin/g++.exe`), as I
get the same errors as before, presumably for the same reasons.
Also, when I used a 64-bit g++ with 64-bit python, the resultant
executable wouldn't run, again due to DLLs. I had to use `-static`
linker option to get it to run. Setting the PATH didn't seem to help.
I can live with using 32-bit Python, however I'd like to understand what
is going on.
(a) I presume I would be better off installing the i686 version of
MSYS2, and only using mingw32 bit subsystem. yes?
(b) When running the mingw64 Python (from a DOS prompt), why can I not
invoke a mingw32 executable (e.g. `g++`) from that python script (and
vice versa) ?
Both the mingw32/64 bit python and other executables are supposed to be
pure Windows executables and independent of MSYS2, aren't they?
(c) Why do I need to use the `-static` linker option to run a program
I've built? What libraries do I need in my path and how do I set
library paths? Iis it just PATH or something else? PATH didn't seem to
work for me!
Thanks, Brendan.
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