From a381e9f5c718e917c547a4b21d4e34b97bbb84e6 Mon Sep 17 00:00:00 2001
From: Christoph Reiter <reiter.christoph@gmail.com>
Date: Tue, 21 Sep 2021 21:18:36 +0200
Subject: [PATCH] msys convert_path fix and root hack

---
 Makefile.pre.in | 12 +++++++++---
 1 file changed, 9 insertions(+), 3 deletions(-)

diff --git a/Makefile.pre.in b/Makefile.pre.in
index c7572c0af2e1b2..ec92c2a73b75ac 100644
--- a/Makefile.pre.in
+++ b/Makefile.pre.in
@@ -2276,6 +2276,12 @@ libainstall: all python-config
 	else true; \
 	fi
 
+ifeq ($(shell uname -o),Msys)
+DESTDIRFINAL=$(DESTDIR)
+else
+DESTDIRFINAL=$(DESTDIR)/
+endif
+
 # Install the dynamically loadable modules
 # This goes into $(exec_prefix)
 sharedinstall: all
@@ -2283,9 +2289,9 @@ sharedinstall: all
 	   	--prefix=$(prefix) \
 		--install-scripts=$(BINDIR) \
 		--install-platlib=$(DESTSHARED) \
-		--root=$(DESTDIR)/
-	-rm $(DESTDIR)$(DESTSHARED)/_sysconfigdata_$(ABIFLAGS)_$(MACHDEP)_$(MULTIARCH).py
-	-rm -r $(DESTDIR)$(DESTSHARED)/__pycache__
+		--root=$(DESTDIRFINAL)
+	-rm $(DESTDIRFINAL)$(DESTSHARED)/_sysconfigdata_$(ABIFLAGS)_$(MACHDEP)_$(MULTIARCH).py
+	-rm -r $(DESTDIRFINAL)$(DESTSHARED)/__pycache__
 
 # Here are a couple of targets for MacOSX again, to install a full
 # framework-based Python. frameworkinstall installs everything, the