Skip fPIC

Author: zanieb

cpython-unix/build-cpython.sh

@@ -650,7 +650,18 @@ fi
 autoconf
 
 # Ensure `CFLAGS` are propagated to JIT compilation for 3.13+
-CFLAGS=$CFLAGS CPPFLAGS=$CFLAGS CFLAGS_JIT=$CFLAGS LDFLAGS=$LDFLAGS \
+# (note this variable has no effect on 3.12 and earlier)
+if [[ -n "${PYTHON_MEETS_MAXIMUM_VERSION_313}" ]]; then
+    CFLAGS_JIT="${CFLAGS}"
+else
+    # In 3.14+, the JIT compiler on x86-64 Linux uses a model that conflicts with `-fPIC`, so strip
+    # it from the flags. See:
+    # - https://github.com/python/cpython/issues/135690
+    # - https://github.com/python/cpython/pull/130097
+    CFLAGS_JIT="${CFLAGS//-fPIC/}"
+fi
+
+CFLAGS=$CFLAGS CPPFLAGS=$CFLAGS CFLAGS_JIT=$CFLAGS_JIT LDFLAGS=$LDFLAGS \
     ./configure ${CONFIGURE_FLAGS}
 
 # Supplement produced Makefile with our modifications.