From 4c223d7528029763cb4afd0682fa950d83f50f61 Mon Sep 17 00:00:00 2001
From: Ian Jackson <ijackson@chiark.greenend.org.uk>
Date: Wed, 13 Nov 2019 22:56:45 +0000
Subject: [PATCH] test regeneration after a -included .in file changes

Signed-off-by: Ian Jackson <ijackson@chiark.greenend.org.uk>
---
 example/.gitignore       | 1 +
 example/configure.ac     | 4 ++++
 example/lib/Subdir.sd.mk | 2 ++
 tests/check              | 5 +++++
 4 files changed, 12 insertions(+)

diff --git a/example/.gitignore b/example/.gitignore
index 07064fc..a97b413 100644
--- a/example/.gitignore
+++ b/example/.gitignore
@@ -27,3 +27,4 @@ Subdir.mk
 #----- For our tests -----
 /build
 /src/for-test.sd.mk
+/lib/for-test.mk.in
diff --git a/example/configure.ac b/example/configure.ac
index 88516fb..8d3496b 100644
--- a/example/configure.ac
+++ b/example/configure.ac
@@ -19,6 +19,10 @@ m4_include([subdirmk/subdirmk.ac])
 SUBDIRMK_SUBDIRS([lib])
 SUBDIRMK_SUBDIRS([lib/t src])
 
+if test -f $srcdir/lib/for-test.mk.in; then
+   SUBDIRMK_MAKEFILES([lib/for-test.mk])
+fi
+
 AC_OUTPUT
 
 dnl----- That's all, folks --------------------------------------------------
diff --git a/example/lib/Subdir.sd.mk b/example/lib/Subdir.sd.mk
index fa40cfd..c2939c5 100644
--- a/example/lib/Subdir.sd.mk
+++ b/example/lib/Subdir.sd.mk
@@ -9,3 +9,5 @@
 
 &libtoy.a:	$(&OBJECTS)
 	$(AR) rc $@ $^
+
+-include &^/lib/for-test.mk
diff --git a/tests/check b/tests/check
index 7465c2c..f0914dd 100755
--- a/tests/check
+++ b/tests/check
@@ -12,6 +12,7 @@ git clean -xdff
 mkdir build
 cd build
 >>../src/for-test.sd.mk
+>>../lib/for-test.mk.in
 .././autogen.sh && ../configure
 make -j4 all check
 
@@ -19,4 +20,8 @@ echo '# for-check 1' >>../src/for-test.sd.mk
 make -j4
 grep '^# for-check 1' src/Subdir.mk || false
 
+echo '# for-check 2' >>../lib/for-test.mk.in
+make -j4
+grep '^# for-check 2' lib/for-test.mk || false
+
 echo ok.
-- 
2.30.2