From e25fec8c0c0a50c3a92165ecfc018f0ce9bb0565 Mon Sep 17 00:00:00 2001
From: Dominic Letz <dominic@diode.io>
Date: Wed, 6 Oct 2021 17:16:17 +0200
Subject: Added static compilation option for NIFs

---
 plugins/c_src.mk | 26 ++++++++++++++++++++++++++
 1 file changed, 26 insertions(+)

diff --git a/plugins/c_src.mk b/plugins/c_src.mk
index 332b9fa..fd9c2d7 100644
--- a/plugins/c_src.mk
+++ b/plugins/c_src.mk
@@ -15,17 +15,24 @@ C_SRC_TYPE ?= shared
 ifeq ($(PLATFORM),msys2)
 	C_SRC_OUTPUT_EXECUTABLE_EXTENSION ?= .exe
 	C_SRC_OUTPUT_SHARED_EXTENSION ?= .dll
+	C_SRC_OUTPUT_STATIC_EXTENSION ?= .lib
 else
 	C_SRC_OUTPUT_EXECUTABLE_EXTENSION ?=
 	C_SRC_OUTPUT_SHARED_EXTENSION ?= .so
+	C_SRC_OUTPUT_STATIC_EXTENSION ?= .a
 endif
 
 ifeq ($(C_SRC_TYPE),shared)
 	C_SRC_OUTPUT_FILE = $(C_SRC_OUTPUT)$(C_SRC_OUTPUT_SHARED_EXTENSION)
+else ifeq ($(C_SRC_TYPE),static)
+	C_SRC_OUTPUT_FILE = $(C_SRC_OUTPUT)$(C_SRC_OUTPUT_STATIC_EXTENSION)
 else
 	C_SRC_OUTPUT_FILE = $(C_SRC_OUTPUT)$(C_SRC_OUTPUT_EXECUTABLE_EXTENSION)
 endif
 
+RANLIB ?= ranlib
+ARFLAGS ?= cr
+
 ifeq ($(PLATFORM),msys2)
 # We hardcode the compiler used on MSYS2. The default CC=cc does
 # not produce working code. The "gcc" MSYS2 package also doesn't.
@@ -53,6 +60,11 @@ ifneq ($(PLATFORM),msys2)
 	CXXFLAGS += -fPIC
 endif
 
+ifeq ($(C_SRC_TYPE),static)
+	CFLAGS += -DSTATIC_ERLANG_NIF=1
+	CXXFLAGS += -DSTATIC_ERLANG_NIF=1
+endif
+
 CFLAGS += -I"$(ERTS_INCLUDE_DIR)" -I"$(ERL_INTERFACE_INCLUDE_DIR)"
 CXXFLAGS += -I"$(ERTS_INCLUDE_DIR)" -I"$(ERL_INTERFACE_INCLUDE_DIR)"
 
@@ -69,6 +81,12 @@ cpp_verbose = $(cpp_verbose_$(V))
 link_verbose_0 = @echo " LD    " $(@F);
 link_verbose = $(link_verbose_$(V))
 
+ar_verbose_0 = @echo " AR    " $(@F);
+ar_verbose = $(ar_verbose_$(V))
+
+ranlib_verbose_0 = @echo " RANLIB" $(@F);
+ranlib_verbose = $(ranlib_verbose_$(V))
+
 # Targets.
 
 ifeq ($(wildcard $(C_SRC_DIR)),)
@@ -97,11 +115,19 @@ app:: $(C_SRC_ENV) $(C_SRC_OUTPUT_FILE)
 
 test-build:: $(C_SRC_ENV) $(C_SRC_OUTPUT_FILE)
 
+ifneq ($(C_SRC_TYPE),static)
 $(C_SRC_OUTPUT_FILE): $(OBJECTS)
 	$(verbose) mkdir -p $(dir $@)
 	$(link_verbose) $(CC) $(OBJECTS) \
 		$(LDFLAGS) $(if $(filter $(C_SRC_TYPE),shared),-shared) $(LDLIBS) \
 		-o $(C_SRC_OUTPUT_FILE)
+else
+$(C_SRC_OUTPUT_FILE): $(OBJECTS)
+	$(verbose) mkdir -p $(dir $@)
+	$(ar_verbose) $(AR) $(ARFLAGS) $(C_SRC_OUTPUT_FILE) $(OBJECTS)
+	$(ranlib_verbose) $(RANLIB) $(C_SRC_OUTPUT_FILE)
+endif
+
 
 $(OBJECTS): $(MAKEFILE_LIST) $(C_SRC_ENV)
 
-- 
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