From 13921602809a37405e21bec260f24ac8fc76bfcb Mon Sep 17 00:00:00 2001
From: Rafael Sene <rafael@riscv.org>
Date: Mon, 19 Feb 2024 11:02:38 -0800
Subject: [PATCH] This change introduces a new variable, ENABLE_STATIC, to the
 build process, allowing the simulators to be compiled statically. This
 provides the flexibility to generate standalone simulators that are not
 dependent on shared libraries at runtime, which can be particularly
 beneficial for deployment in environments where managing dynamic libraries is
 challenging or for distributing simulators more easily.

---
 Makefile | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/Makefile b/Makefile
index 255224125..9f4295f69 100644
--- a/Makefile
+++ b/Makefile
@@ -157,6 +157,11 @@ ZLIB_FLAGS = $(shell pkg-config --cflags zlib)
 ZLIB_LIBS = $(shell pkg-config --libs zlib)
 
 C_FLAGS = -I $(SAIL_LIB_DIR) -I c_emulator $(GMP_FLAGS) $(ZLIB_FLAGS) $(SOFTFLOAT_FLAGS)
+# Conditional check for ENABLE_STATIC=1
+ifneq (,$(ENABLE_STATIC))
+    # If ENABLE_STATIC is set, append specific static linking flags
+    C_FLAGS += -static -Wl,--as-needed -Wl,-O1
+endif
 C_LIBS  = $(GMP_LIBS) $(ZLIB_LIBS) $(SOFTFLOAT_LIBS)
 
 # The C simulator can be built to be linked against Spike for tandem-verification.