diff --git a/lib/csu/mips/crt.h b/lib/csu/mips/crt.h
index 509899b97b96..7da894280f53 100644
--- a/lib/csu/mips/crt.h
+++ b/lib/csu/mips/crt.h
@@ -27,5 +27,25 @@
 #define	_CRT_H_
 
 #define	HAVE_CTORS
+#define	CTORS_CONSTRUCTORS
+#ifdef __mips_o32
+#define	INIT_CALL_SEQ(func)						\
+    ".set noreorder		\n"					\
+    "bal	1f		\n"					\
+    "nop			\n"					\
+    "1:				\n"					\
+    ".cpload $ra		\n"					\
+    ".set reorder		\n"					\
+    "jal	" __STRING(func)
+#else
+#define	INIT_CALL_SEQ(func)						\
+    ".set noreorder		\n"					\
+    "bal	1f		\n"					\
+    "nop			\n"					\
+    "1:				\n"					\
+    ".set reorder		\n"					\
+    ".cpsetup $ra, $v0, 1b	\n"					\
+    "jal	" __STRING(func)
+#endif
 
 #endif
diff --git a/lib/csu/sparc64/crt.h b/lib/csu/sparc64/crt.h
index 509899b97b96..82984849630d 100644
--- a/lib/csu/sparc64/crt.h
+++ b/lib/csu/sparc64/crt.h
@@ -27,5 +27,7 @@
 #define	_CRT_H_
 
 #define	HAVE_CTORS
+#define	CTORS_CONSTRUCTORS
+#define	INIT_CALL_SEQ(func)	"call " __STRING(func) "; nop"
 
 #endif
diff --git a/share/mk/src.opts.mk b/share/mk/src.opts.mk
index dc017618db4f..4e4ce4a535d1 100644
--- a/share/mk/src.opts.mk
+++ b/share/mk/src.opts.mk
@@ -193,6 +193,7 @@ __DEFAULT_YES_OPTIONS = \
     ZONEINFO
 
 __DEFAULT_NO_OPTIONS = \
+    BSD_CRTBEGIN \
     BSD_GREP \
     CLANG_EXTRAS \
     DTRACE_TESTS \
@@ -385,13 +386,6 @@ BROKEN_OPTIONS+=HYPERV
 BROKEN_OPTIONS+=NVME
 .endif
 
-.if ${__T} == "aarch64" || ${__T} == "amd64" || ${__T} == "i386" || \
-    ${__T} == "powerpc64"
-__DEFAULT_NO_OPTIONS+=BSD_CRTBEGIN
-.else
-BROKEN_OPTIONS+=BSD_CRTBEGIN
-.endif
-
 .include <bsd.mkopt.mk>
 
 #