diff --git a/src/os/unix/crashlog_unix.cpp b/src/os/unix/crashlog_unix.cpp
--- a/src/os/unix/crashlog_unix.cpp
+++ b/src/os/unix/crashlog_unix.cpp
@@ -19,9 +19,6 @@
 #if defined(__GLIBC__)
 /* Execinfo (and thus making stacktraces) is a GNU extension */
 #	include <execinfo.h>
-#elif defined(SUNOS)
-#	include <ucontext.h>
-#	include <dlfcn.h>
 #endif
 
 #if defined(__NetBSD__)
@@ -70,38 +67,6 @@ class CrashLogUnix : public CrashLog {
 		);
 	}
 
-#if defined(SUNOS)
-	/** Data needed while walking up the stack */
-	struct StackWalkerParams {
-		std::back_insert_iterator<std::string> *output_iterator; ///< Buffer
-		int counter; ///< We are at counter-th stack level
-	};
-
-	/**
-	 * Callback used while walking up the stack.
-	 * @param pc program counter
-	 * @param sig 'active' signal (unused)
-	 * @param params parameters
-	 * @return always 0, continue walking up the stack
-	 */
-	static int SunOSStackWalker(uintptr_t pc, int sig, void *params)
-	{
-		StackWalkerParams *wp = (StackWalkerParams *)params;
-
-		/* Resolve program counter to file and nearest symbol (if possible) */
-		Dl_info dli;
-		if (dladdr((void *)pc, &dli) != 0) {
-			fmt::format_to(*wp->output_iterator, " [{:02}] {}({}+0x{:x}) [0x{:x}]\n",
-					wp->counter, dli.dli_fname, dli.dli_sname, (int)((byte *)pc - (byte *)dli.dli_saddr), (uint)pc);
-		} else {
-			fmt::format_to(*wp->output_iterator, " [{:02}] [0x{:x}]\n", wp->counter, (uint)pc);
-		}
-		wp->counter++;
-
-		return 0;
-	}
-#endif
-
 	void LogStacktrace(std::back_insert_iterator<std::string> &output_iterator) const override
 	{
 		fmt::format_to(output_iterator, "Stacktrace:\n");
@@ -114,15 +79,6 @@ class CrashLogUnix : public CrashLog {
 			fmt::format_to(output_iterator, " [{:02}] {}\n", i, messages[i]);
 		}
 		free(messages);
-#elif defined(SUNOS)
-		ucontext_t uc;
-		if (getcontext(&uc) != 0) {
-			fmt::format_to(output_iterator, " getcontext() failed\n\n");
-			return buffer;
-		}
-
-		StackWalkerParams wp = { &output_iterator, 0 };
-		walkcontext(&uc, &CrashLogUnix::SunOSStackWalker, &wp);
 #else
 		fmt::format_to(output_iterator, " Not supported.\n");
 #endif