Issue #27229: Fix in-tree cross-build rule, by Xavier de Gaye
diff --git a/Makefile.pre.in b/Makefile.pre.in
index dee1263..eb88f5f 100644
--- a/Makefile.pre.in
+++ b/Makefile.pre.in
@@ -793,13 +793,16 @@
if test "$(cross_compiling)" != "yes"; then \
$(PGEN) $(GRAMMAR_INPUT) $(GRAMMAR_H) $(GRAMMAR_C); \
else \
- cp $(srcdir)/Include/graminit.h $(GRAMMAR_H); \
+ # Avoid copying the file onto itself for an in-tree build \
+ cp $(srcdir)/Include/graminit.h $(GRAMMAR_H).tmp; \
+ mv $(GRAMMAR_H).tmp $(GRAMMAR_H); \
fi
$(GRAMMAR_C): $(GRAMMAR_H)
if test "$(cross_compiling)" != "yes"; then \
touch $(GRAMMAR_C); \
else \
- cp $(srcdir)/Python/graminit.c $(GRAMMAR_C); \
+ cp $(srcdir)/Python/graminit.c $(GRAMMAR_C).tmp; \
+ mv $(GRAMMAR_C).tmp $(GRAMMAR_C); \
fi
$(PGEN): $(PGENOBJS)
diff --git a/Misc/NEWS b/Misc/NEWS
index feb0c62..da2dc3e 100644
--- a/Misc/NEWS
+++ b/Misc/NEWS
@@ -581,6 +581,9 @@
source code anyway, and is still regenerated when doing a native build.
Patch by Xavier de Gaye.
+- Issue #27229: Fix the cross-compiling pgen rule for in-tree builds. Patch
+ by Xavier de Gaye.
+
- Issue #21668: Link audioop, _datetime, _ctypes_test modules to libm,
except on Mac OS X. Patch written by Xavier de Gaye.