From d56e3abd0e81c19959b2796c231765cf1df0c5ac Mon Sep 17 00:00:00 2001
From: Giles Atkinson <“gatk555@gmail.com”>
Date: Fri, 26 Jun 2026 17:01:14 +0100
Subject: [PATCH] In a shared library build, the option -fvisibility=hidden may
 be set when compiling making entry point Cosim_setup inaccessible.  The
 problem was reported at https://github.com/iic-jku/IIC-OSIC-TOOLS/issues/287,
 but not reproduced.

---
 src/xspice/verilog/icarus_shim.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/xspice/verilog/icarus_shim.c b/src/xspice/verilog/icarus_shim.c
index 9d540fcd6..baa495b6f 100644
--- a/src/xspice/verilog/icarus_shim.c
+++ b/src/xspice/verilog/icarus_shim.c
@@ -268,6 +268,9 @@ static void *run_vvp(void *arg)
 
 /* Entry point to this shared library.  Called by d_cosim. */
 
+#if !defined(__MINGW32__) && !defined(_MSC_VER)
+__attribute__((visibility("default")))
+#endif
 void Cosim_setup(struct co_info *pinfo)
 {
     char             *file;