#For mingw and cygwin, can only mingw use msvcrt*.dll? and can only cygwin use cygwin1.dll?
visual cradle
hexed forge
Exactly.
visual cradle
where is msvcrt*.dll?
hexed forge
C:\windows\system32 usually,
cf https://en.m.wikipedia.org/wiki/Microsoft_Windows_library_files
ivory kelp
I think there's a mistake in the docs. msvcrt*.dll matches only one file as far as I know. It's either msvcrt.dll (internal C runtime) or msvcr*.dll (redistributable runtimes from Visual Studio, e.g. msvcr100.dll, msvcr110.dll).
visual cradle
my@DESKTOP MINGW64 /c/Windows/System32
$ find . -type f -iregex ".*msvcrt.*\.dll"
./msvcrt.dll
my@DESKTOP MINGW64 /c/Windows/System32
$ cd "/e/Windows Kits/10"
my@DESKTOP MINGW64 /e/Windows Kits/10
$ find . -type f -iregex ".*msvcrt.*\.dll"
my@DESKTOP MINGW64 /e/Windows Kits/10
$ cd "/e/software/Microsoft Visual Studio/2022/Community"
my@DESKTOP MINGW64 /e/software/Microsoft Visual Studio/2022/Community
$ find . -type f -iregex ".*msvcrt.*\.dll"
my@DESKTOP MINGW64 /e/software/Microsoft Visual Studio/2022/Community
$ cd /e/software/msys2
my@DESKTOP MINGW64 /e/software/msys2
$ find . -type f -iregex ".*msvcrt.*\.dll"
I only find things about msvcrt in the "/c/Windows/System32"
ivory kelp
Yes, msvcrt.dll is the internal C runtime, it's a system component that has been disconnected from Visual Studio for a long time.
visual cradle
does msvcrt.dll have version iteration?
ivory kelp
The file contains a version number, but it correlates with the Windows version.
You can see (some) differences between the msvcrt.dll of various Windows versions described here: https://sourceforge.net/p/mingw-w64/mingw-w64/ci/3df73c06315b53900395af9667eae7a1b8dc0e01/tree/mingw-w64-crt/lib-common/msvcrt.def.in
visual cradle
does mingw-w64 have official docs?
visual cradle
these are not my ideal official docs website. it is ugly.
cloud monolith
Documentation is never pretty, no matter how you dress it up.
visual cradle
mingw is more poor than cygwin docs. how do you learn mingw?
cloud monolith
By learning from msvc. Mingw strives to complete the win32 API that Windows uses. Thus you can use Microsoft's documentation for that.
obsidian flint
I think there's a mistake in the docs. `msvcrt*.dll` matches only one file as fa...
Is "msvcr" UCRT?
visual cradle
as far as I know, those are two different C runtime.
@cloud monolith please send me a link for your start point learning msvc.
cloud monolith
<@153729243719794688> please send me a link for your start point learning msvc.
Google is your friend.
ivory kelp
Is "msvcr" UCRT?
No, I wasn't trying to refer to Ucrt here at all, just the different Msvc* runtimes.
obsidian flint
No, I wasn't trying to refer to Ucrt here at all, just the different Msvc* runti...
I'm just asking what the difference
Are the dlls named different or what?
Is it "ucrtbase.dll" ?
ivory kelp
Is what ucrtbase.dll though?
Ucrt is mostly in ucrtbase.dll and a bunch of api-ms-win-*.dll files.
Runtimes used by default with various versions of Visual Studio are mostly in msvcr*.dll and msvcp*.dll.
obsidian flint
Runtimes used by default with various versions of Visual Studio are mostly in ms...
And these are the same runtimes that msys2 "mingw64" is using?
ivory kelp
Not unless you explicitly use one. You can build a mingw-w64 toolchain that defaults to one of the Visual Studio runtimes, but our "mingw32"/"mingw64" toolchains default to the internal Windows runtime, msvcrt.dll.
obsidian flint
Not unless you explicitly use one. You can build a mingw-w64 toolchain that defa...
And how does UCRT64 supply them?
As in, it's Microsoft code, is it downloaded from a Microsoft server or something?
ivory kelp
It's installed by default on newer Windows versions.
obsidian flint
It's installed by default on newer Windows versions.
And on older? What does msys2 do?
ivory kelp
MSYS2 doesn't do anything.
Ucrt can be optionally installed by the user or admin on some older Windows versions.
obsidian flint
Ucrt can be optionally installed by the user or admin on some older Windows vers...
So what happens if I try using ucrt64 on a system that doesn't have it?
*in msys2
ivory kelp
Something like this I guess.
fallen nexus
@visual cradle if your gonna ask so many questions you might want to use the text channels instead
visual cradle
good idea.
ivory kelp
I actually like that we don't have this in the text channels. I don't know if the help forum is the best place either though.
visual cradle
This statement confuse me very much:
- one application only have one memory space?
- one application can not directly access the contents of a DLL, rather than a single copy of a DLL?
- multiple application can not directly access the contents of a DLL, rather than a single copy of a DLL?
ivory kelp
- Kind of yes. The operating system provides a virtual memory space, often a different one for each process. Memory space means all possible memory addressed from 0 to the maximum pointer value of the platform (so around 2^64 bytes on a usual 64-bit system). Usually only a small part of the memory space is actually usable. Not everything in the virtual memory corresponds to RAM, there are also mapped files from the disk, there is paging to disk ("swap").