gh-141926: Do not unset RUNSHARED when cross-compiling

zanieb · zanieb · commit a3272ed0ad48 · 2025-11-25T13:18:31.000-06:00
diff --git a/Misc/NEWS.d/next/Build/2025-11-25-13-17-47.gh-issue-141926.KmuM2h.rst b/Misc/NEWS.d/next/Build/2025-11-25-13-17-47.gh-issue-141926.KmuM2h.rst
@@ -0,0 +1,4 @@
+Previously, ``RUNSHARED`` was cleared when cross-compiling, which breaks PGO
+when using ``--enabled-shared`` on systems where the cross-compiled CPython
+is otherwise executable (e.g., via transparent emulation). Now,
+``RUNSHARED`` is left set when cross-compiling unconditionally.
diff --git a/configure b/configure
diff --git a/configure.ac b/configure.ac
@@ -1630,10 +1630,6 @@ else # shared is disabled
 fi
 AC_MSG_RESULT([$LDLIBRARY])
 
-if test "$cross_compiling" = yes; then
-  RUNSHARED=
-fi
-
 # HOSTRUNNER - Program to run CPython for the host platform
 AC_MSG_CHECKING([HOSTRUNNER])
 if test -z "$HOSTRUNNER"
