diff --git a/configure.ac b/configure.ac
index 03213fd..fb69ef5 100644
--- a/configure.ac
+++ b/configure.ac
@@ -20,6 +20,8 @@ AC_PROG_INSTALL
 STARFIGHTER_CFLAGS="-DVERSION=\\\"$PACKAGE_VERSION\\\""
 
 # Checks for libraries.
+AC_SEARCH_LIBS([atanf], [m])
+
 PKG_CHECK_EXISTS([SDL2_mixer], [
 	PKG_CHECK_EXISTS([SDL2_ttf], [
 		PKG_CHECK_MODULES([SDL], [sdl2 SDL2_image SDL2_mixer SDL2_ttf])
diff --git a/music/Makefile.am b/music/Makefile.am
deleted file mode 100644
index d4a568a..0000000
--- a/music/Makefile.am
+++ /dev/null
@@ -1,11 +0,0 @@
-# This file has been dedicated to the public domain, to the extent
-# possible under applicable law, via CC0. See
-# http://creativecommons.org/publicdomain/zero/1.0/ for more
-# information. This file is offered as-is, without any warranty.
-
-if !RUN_IN_PLACE
-
-nobase_pkgdata_DATA = *
-
-endif
-
diff --git a/sound/Makefile.am b/sound/Makefile.am
deleted file mode 100644
index d4a568a..0000000
--- a/sound/Makefile.am
+++ /dev/null
@@ -1,11 +0,0 @@
-# This file has been dedicated to the public domain, to the extent
-# possible under applicable law, via CC0. See
-# http://creativecommons.org/publicdomain/zero/1.0/ for more
-# information. This file is offered as-is, without any warranty.
-
-if !RUN_IN_PLACE
-
-nobase_pkgdata_DATA = *
-
-endif
-