Index: onbld/usr/src/tools/ctf/cvt/output.c
===================================================================
--- onbld.orig/usr/src/tools/ctf/cvt/output.c
+++ onbld/usr/src/tools/ctf/cvt/output.c
@@ -477,8 +477,17 @@ write_file(Elf *src, const char *srcname
 	 * program headers.  As such, we can just blindly copy the program
 	 * headers from the existing file to the new file.
 	 */
+    /*
+     * libelfg0 by default checks for and forbids section overlapping,
+     * but ".SUNW_ldynsym" and ".dynsym" do overlap.
+     * It also defines ELF_F_LAYOUT_OVERLAP to allow ELF sections to overlap.
+     * In case we are not using libelfg0 we just set ELF_F_LAYOUT_OVERLAP to 0.
+     */
+#ifndef ELF_F_LAYOUT_OVERLAP
+#define ELF_F_LAYOUT_OVERLAP 0
+#endif
 	if (sehdr.e_phnum != 0) {
-		(void) elf_flagelf(dst, ELF_C_SET, ELF_F_LAYOUT);
+		(void) elf_flagelf(dst, ELF_C_SET, ELF_F_LAYOUT | ELF_F_LAYOUT_OVERLAP);
 		if (gelf_newphdr(dst, sehdr.e_phnum) == 0)
 			elfterminate(dstname, "Cannot make phdrs in temp file");