Potential fix for parallel builds failure of mingw subpackage

0001-common-bitmaps-Fix-tests-when-srcdir-builddir.patch

@@ -1,7 +1,7 @@
 From 93a1538808ac7f9788336a7e35168d851e8b2c72 Mon Sep 17 00:00:00 2001
 From: "Richard W.M. Jones" <rjones@redhat.com>
 Date: Tue, 23 Jan 2024 13:24:48 +0000
-Subject: [PATCH 1/2] common/bitmaps: Fix tests when srcdir != builddir
+Subject: [PATCH 1/3] common/bitmaps: Fix tests when srcdir != builddir
 
 ---
  common/bitmap/Makefile.am | 1 +

0002-tests-Fix-tests-to-work-with-srcdir-builddir.patch

@@ -1,7 +1,7 @@
 From ac60163ceba1b951e1d2f0625552e6a45d85f666 Mon Sep 17 00:00:00 2001
 From: "Richard W.M. Jones" <rjones@redhat.com>
 Date: Tue, 23 Jan 2024 13:35:02 +0000
-Subject: [PATCH 2/2] tests: Fix tests to work with srcdir != builddir
+Subject: [PATCH 2/3] tests: Fix tests to work with srcdir != builddir
 
 ---
  tests/test-cc-cpp.sh                  |  2 +-

0003-common-replacements-win32-Only-build-nbdkit-cat.mc-d.patch

@@ -0,0 +1,48 @@
+From 774465bb9e3444f23709deabeb39cc91490001a5 Mon Sep 17 00:00:00 2001
+From: "Richard W.M. Jones" <rjones@redhat.com>
+Date: Tue, 23 Jan 2024 18:08:12 +0000
+Subject: [PATCH 3/3] common/replacements/win32: Only build nbdkit-cat.mc
+ derived files once
+
+Previously parallel builds caused multiple instances of windmc to run.
+Use a stamp file to avoid this.
+---
+ common/replacements/win32/Makefile.am | 9 +++++++--
+ .gitignore                            | 1 +
+ 2 files changed, 8 insertions(+), 2 deletions(-)
+
+diff --git a/common/replacements/win32/Makefile.am b/common/replacements/win32/Makefile.am
+index 9b5a68db0..b8c7c639e 100644
+--- a/common/replacements/win32/Makefile.am
++++ b/common/replacements/win32/Makefile.am
+@@ -38,8 +38,13 @@ if IS_WINDOWS
+ # Build the message catalog.
+ noinst_DATA = MSG00001.bin nbdkit-cat.h nbdkit-cat.rc
+ 
+-$(noinst_DATA): nbdkit-cat.mc
+-	rm -f $@
++CLEANFILES += stamp-data
++
++$(noinst_DATA): stamp-data
++
++stamp-data: nbdkit-cat.mc
++	rm -f $@ $(noinst_DATA)
+ 	$(MC) $<
++	touch $@
+ 
+ endif
+diff --git a/.gitignore b/.gitignore
+index 04fdcd723..14f816c93 100644
+--- a/.gitignore
++++ b/.gitignore
+@@ -55,6 +55,7 @@ plugins/*/*.3
+ /common/replacements/win32/MSG00001.bin
+ /common/replacements/win32/nbdkit-cat.h
+ /common/replacements/win32/nbdkit-cat.rc
++/common/replacements/win32/stamp-data
+ /common/utils/test-quotes
+ /common/utils/test-vector
+ /common/utils/windows-errors.c
+-- 
+2.43.0
+

nbdkit.spec

@@ -92,6 +92,7 @@ Source8:        %{modulename}.fc
 # Upstream patches to fix srcdir != builddir
 Patch:          0001-common-bitmaps-Fix-tests-when-srcdir-builddir.patch
 Patch:          0002-tests-Fix-tests-to-work-with-srcdir-builddir.patch
+Patch:          0003-common-replacements-win32-Only-build-nbdkit-cat.mc-d.patch
 
 BuildRequires: make
 %if 0%{patches_touch_autotools}