SDL_mixer: adjust dist-hook to remove unwanted files from externals

From 4a2d929145aeec66020fdb05736a44c52afb9545 Mon Sep 17 00:00:00 2001
From: Ozkan Sezer <[EMAIL REDACTED]>
Date: Sun, 8 May 2022 10:50:04 +0300
Subject: [PATCH] adjust dist-hook to remove unwanted files from externals

---
 Makefile.in | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/Makefile.in b/Makefile.in
index d082516d..433f0e17 100644
--- a/Makefile.in
+++ b/Makefile.in
@@ -125,7 +125,9 @@ dist $(distfile):
 	$(SHELL) $(auxdir)/mkinstalldirs $(distdir)
 	(cd $(srcdir); tar cf - $(SRC_DIST)) | (cd $(distdir); tar xf -)
 	tar cf - $(GEN_DIST) | (cd $(distdir); tar xf -)
-	rm -rf `find $(distdir) -name .svn`
+	rm -rf `find $(distdir)/external -name .git*`
+	rm -rf `find $(distdir)/external -name ci`
+	rm -rf `find $(distdir)/external -name *.yml`
 	rm -f `find $(distdir) -name '.#*'`
 	tar cvf - $(distdir) | gzip --best >$(distfile)
 	rm -rf $(distdir)