From: xtkoba+ruby@gmail.com
To: ruby-core@ruby-lang.org
Subject: [ruby-core:103316] [Ruby master Bug#16651] Extensions Do Not Compile on Mingw64 with mingw64-make
Date: Thu, 08 Apr 2021 20:31:51 +0000 (UTC) [thread overview]
Message-ID: <redmine.journal-91405.20210408203150.91@ruby-lang.org> (raw)
In-Reply-To: redmine.issue-16651.20200224065537.91@ruby-lang.org
Issue #16651 has been updated by xtkoba (Tee KOBAYASHI).
I suppose `arch_hdrdir` also should have been canonicalized by `mkintpath`, because otherwise it would cause trouble with `VPATH` in `Makefile` which is defined as:
```make
VPATH = $(srcdir):$(arch_hdrdir)/ruby:$(hdrdir)/ruby
```
And I believe that the notation of `VPATH` as above does not work well with `mingw32-make`, because [it allows only one path](http://mingw.5.n7.nabble.com/mingw32-make-VPATH-doesn-t-work-td6550.html).
It seems clear that `mingw32-make` is not supported in the current build system of Ruby. I doubt if the maintainers have tried to support it ever.
One way of supporting both `make` from MSYS and `mingw32-make` would be to stop using `VPATH`, although I have no idea whether this is possible. FYI, `VPATH` seems to cause another trouble (Bug #12179), and it would be desirable if we could throw it away.
----------------------------------------
Bug #16651: Extensions Do Not Compile on Mingw64 with mingw64-make
https://bugs.ruby-lang.org/issues/16651#change-91405
* Author: cfis (Charlie Savage)
* Status: Open
* Priority: Normal
* ruby -v: ruby 2.7.0p0 (2019-12-25 revision 647ee6f091) [x64-mingw32]
* Backport: 2.5: UNKNOWN, 2.6: UNKNOWN, 2.7: UNKNOWN
----------------------------------------
When mkmf.rb creates a Makefile for an extension, it will generate something that looks like this:
srcdir = .
topdir = C/MSYS64/USR/LOCAL/ruby-2.7.0/include/ruby-2.7.0
hdrdir = $(topdir)
arch_hdrdir = C:/MSYS64/USR/LOCAL/ruby-2.7.0/include/ruby-2.7.0/x64-mingw32
Notice the topdir path is c/ without the ":" Its only the topdir that does this, all other paths in the makefile use the "c:/" style.
mkmf.rb intentionally does that, see line 1098:
def mkintpath(path)
# mingw uses make from msys and it needs special care
# converts from C:\some\path to /C/some/path
path = path.dup
path.tr!('\\', '/')
path.sub!(/\A([A-Za-z]):(?=\/)/, '/\1') <-------- This line
path
end
But this is wrong, and causes errors like this (this is compiling the debase gem but it doesn't matter what c extension you use):
make: *** No rule to make target 'C/MSYS64/USR/LOCAL/ruby-2.7.0/include/ruby-2.7.0/ruby.h', needed by 'breakpoint.o'. Stop.
The fix is simple, just delete that line. The makefile should look like this:
srcdir = .
topdir = C:/MSYS64/USR/LOCAL/ruby-2.7.0/include/ruby-2.7.0
hdrdir = $(topdir)
arch_hdrdir = C:/MSYS64/USR/LOCAL/ruby-2.7.0/include/ruby-2.7.0/x64-mingw32
Note I'm not the first person to see this, but I've just been manually fixing it over the years. Would be good to really fix it.
https://github.com/oneclick/rubyinstaller2/issues/105
https://github.com/oneclick/rubyinstaller2/issues/47
https://github.com/tmm1/http_parser.rb/issues/55
Note some of those tickets put the blame on using mingw-make versus msys make. But on my system, neither work with the "c/" style path but both work with the "c:/" style path.
--
https://bugs.ruby-lang.org/
next prev parent reply other threads:[~2021-04-08 20:31 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-02-24 6:55 [ruby-core:97248] [Ruby master Bug#16651] Extensions Do Not Compile on Mingw64 cfis
2020-09-04 8:25 ` [ruby-core:99919] " cfis
2020-10-29 6:34 ` [ruby-core:100639] " cfis
2020-10-29 9:48 ` [ruby-core:100640] " nobu
2021-02-06 8:27 ` [ruby-core:102408] " cfis
2021-02-15 21:07 ` [ruby-core:102509] " cfis
2021-04-02 8:45 ` [ruby-core:103174] " cfis
2021-04-02 10:55 ` [ruby-core:103177] " xtkoba+ruby
2021-04-08 6:28 ` [ruby-core:103294] " cfis
2021-04-08 20:31 ` xtkoba+ruby [this message]
2021-04-09 7:35 ` [ruby-core:103335] [Ruby master Bug#16651] Extensions Do Not Compile on Mingw64 with mingw64-make cfis
2021-04-09 10:05 ` [ruby-core:103340] " nobu
2021-04-09 22:18 ` [ruby-core:103359] " xtkoba+ruby
2021-04-10 6:18 ` [ruby-core:103365] " nobu
2021-04-11 13:02 ` [ruby-core:103385] [Ruby master Bug#16651] Extensions Do Not Compile on Mingw64 with mingw32-make nobu
2021-04-23 4:23 ` [ruby-core:103570] " cfis
2021-05-22 7:28 ` [ruby-core:103969] " nagachika00
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