From 8c1dbad36f44f332dadd9d08c8ffe3da7f6a20a6 Mon Sep 17 00:00:00 2001
From: Christian Heimes <christian@python.org>
Date: Fri, 26 Aug 2022 12:31:58 +0200
Subject: [PATCH] gh-96269: Fix build dependency on AIX (GH-96304)

---
 Makefile.pre.in                                                | 2 ++
 .../next/Build/2022-08-26-11-50-03.gh-issue-96269.x_J5h0.rst   | 3 +++
 Modules/makesetup                                              | 2 +-
 3 files changed, 6 insertions(+), 1 deletion(-)
 create mode 100644 Misc/NEWS.d/next/Build/2022-08-26-11-50-03.gh-issue-96269.x_J5h0.rst

diff --git a/Makefile.pre.in b/Makefile.pre.in
index 3491e91f43aba3..af203705d38e63 100644
--- a/Makefile.pre.in
+++ b/Makefile.pre.in
@@ -2522,6 +2522,8 @@ Python/thread.o: @THREADHEADERS@ $(srcdir)/Python/condvar.h
 ##########################################################################
 # Module dependencies and platform-specific files
 
+MODULE_DEPS=$(PYTHON_HEADERS) Modules/config.c $(EXPORTSYMS)
+
 MODULE_CMATH_DEPS=$(srcdir)/Modules/_math.h
 MODULE_MATH_DEPS=$(srcdir)/Modules/_math.h
 MODULE_PYEXPAT_DEPS=$(LIBEXPAT_HEADERS) @LIBEXPAT_INTERNAL@
diff --git a/Misc/NEWS.d/next/Build/2022-08-26-11-50-03.gh-issue-96269.x_J5h0.rst b/Misc/NEWS.d/next/Build/2022-08-26-11-50-03.gh-issue-96269.x_J5h0.rst
new file mode 100644
index 00000000000000..adb605fede5dae
--- /dev/null
+++ b/Misc/NEWS.d/next/Build/2022-08-26-11-50-03.gh-issue-96269.x_J5h0.rst
@@ -0,0 +1,3 @@
+Shared module targets now depend on new ``MODULE_DEPS`` variable, which
+includes ``EXPORTSYMS``. This fixes a build order issue on unsupported AIX
+platform.
diff --git a/Modules/makesetup b/Modules/makesetup
index 08303814c8c911..5c275ac9a04945 100755
--- a/Modules/makesetup
+++ b/Modules/makesetup
@@ -267,7 +267,7 @@ sed -e 's/[ 	]*#.*//' -e '/^[ 	]*$/d' |
 				cc="$cc $cpps \$(PY_BUILTIN_MODULE_CFLAGS)";;
 			esac
 			# force rebuild when header file or module build flavor (static/shared) is changed
-			rule="$obj: $src \$(MODULE_${mods_upper}_DEPS) \$(PYTHON_HEADERS) Modules/config.c; $cc -c $src -o $obj"
+			rule="$obj: $src \$(MODULE_${mods_upper}_DEPS) \$(MODULE_DEPS); $cc -c $src -o $obj"
 			echo "$rule" >>$rulesf
 		done
 		case $doconfig in