To build textproc/libfyaml sparc64 needs to use ports-gcc since this code
uses stdatomic.h.

-- 
:wq Claudio

Index: Makefile
===================================================================
RCS file: /cvs/ports/textproc/libfyaml/Makefile,v
diff -u -p -r1.2 Makefile
--- Makefile	3 Oct 2025 09:49:34 -0000	1.2
+++ Makefile	6 Nov 2025 10:25:56 -0000
@@ -12,6 +12,10 @@ CATEGORIES=		textproc devel
 # MIT
 PERMIT_PACKAGE=		Yes
 
+# needs stdatomic.h
+COMPILER_LANGS=		c
+COMPILER=		base-clang ports-gcc
+
 WANTLIB += c pthread
 
 BUILD_DEPENDS=		devel/libyaml