pd: fix musl build

srcpkgs/pd/patches/musl-no-qsort_r.patch

@@ -0,0 +1,14 @@
+Index: src/x_text.c
+===================================================================
+--- src/x_text.c.orig
++++ src/x_text.c
+@@ -475,7 +475,8 @@ equal:
+  * Both are not available in Emscripten, Android or older MSVC versions.
+  * 'stupid_sortcompare' is thread-safe but not reentrant.
+  */
+-#if defined(_WIN32) || defined(__EMSCRIPTEN__) || defined(__ANDROID__)
++#if defined(_WIN32) || defined(__EMSCRIPTEN__) || defined(__ANDROID__) \
++	|| (defined(__linux__) && !defined(__GLIBC__))
+ #define STUPID_SORT
+ static PERTHREAD void *stupid_zkeyinfo;
+ static int stupid_sortcompare(const void *z1, const void *z2)

srcpkgs/pd/template

@@ -15,10 +15,6 @@ license="BSD-3-Clause"
 homepage="https://puredata.info"
 distfiles="http://msp.ucsd.edu/Software/pd-$_ver.src.tar.gz"
 checksum=52591f18316e9f2471ca21c3d6b41c56336e0615ec40a093232e95cc230bfcc1
-case "$XBPS_TARGET_MACHINE" in
-	*-musl) # Causes pd to fail if qsort is used without thread local storage.
-		CFLAGS="-DMICROSOFT_STUPID_SORT" ;;
-esac
 
 pre_configure() {
 	./autogen.sh