When running regen for the plat directories we should use the BUILDEXT
extension, not the EXT one, as regen uses the python binary in the build
directory. Fixes #493959.
diff --git a/Makefile.pre.in b/Makefile.pre.in
index 6c1db27..f4eb01d 100644
--- a/Makefile.pre.in
+++ b/Makefile.pre.in
@@ -653,7 +653,7 @@
export PATH; PATH="`pwd`:$$PATH"; \
export PYTHONPATH; PYTHONPATH="`pwd`/Lib"; \
export DYLD_FRAMEWORK_PATH; DYLD_FRAMEWORK_PATH="`pwd`"; \
- export EXE; EXE="$(EXE)"; \
+ export EXE; EXE="$(BUILDEXE)"; \
cd $(srcdir)/Lib/$(PLATDIR); ./regen
# Install the include files