Issue #9189: Allow users to set $CFLAGS, $CPPFLAGS, and $LDFLAGS when running
configure to append to Python's default values for those variables, and
similarly allow users to set $XXFLAGS on the make command line to append to the
values set by configure.
In the makefile, this renames the variables that used to be $XXFLAGS to
$PY_XXFLAGS, and renames the old $PY_CFLAGS to $PY_CORE_CFLAGS. To compensate,
sysconfig now aliases $XXFLAGS=$PY_XXFLAGS so that scripts using it keep
working. I see that as the right interface, not a backward-compatibility hack,
since these are logically the $XXFLAGS variables; we just use a different name
in the makefile to deal with make's semantics.
diff --git a/Lib/sysconfig.py b/Lib/sysconfig.py
index 03f2d5c..d59a682 100644
--- a/Lib/sysconfig.py
+++ b/Lib/sysconfig.py
@@ -259,6 +259,11 @@
# bogus variable reference; just drop it since we can't deal
variables.remove(name)
+ # Add in CFLAGS, LDFLAGS, and CPPFLAGS, which are named with a
+ # prefix in the Makefile.
+ for var in ('CFLAGS', 'LDFLAGS', 'CPPFLAGS'):
+ done[var] = done['PY_' + var]
+
# save the results in the global dictionary
vars.update(done)
return vars