From e41e5def27ca9fa760c32bb1000958ba92a8d141 Mon Sep 17 00:00:00 2001
From: "Brent M. Spell" <bspell1@gmail.com>
Date: Fri, 13 Nov 2020 14:27:26 -0500
Subject: [PATCH] remove erl_interface references

The erl_interface library has been removed in OTP 23, so these changes
remove references to this library from the project so that it can
compile.
---
 c_src/Makefile | 8 +++-----
 1 file changed, 3 insertions(+), 5 deletions(-)

diff --git a/c_src/Makefile b/c_src/Makefile
index 0b9125c..9d9380e 100644
--- a/c_src/Makefile
+++ b/c_src/Makefile
@@ -6,8 +6,6 @@ BASEDIR := $(abspath $(CURDIR)/..)
 PROJECT = e2qc_nif
 
 ERTS_INCLUDE_DIR ?= $(shell erl -noshell -s init stop -eval "io:format(\"~s/erts-~s/include/\", [code:root_dir(), erlang:system_info(version)]).")
-ERL_INTERFACE_INCLUDE_DIR ?= $(shell erl -noshell -s init stop -eval "io:format(\"~s\", [code:lib_dir(erl_interface, include)]).")
-ERL_INTERFACE_LIB_DIR ?= $(shell erl -noshell -s init stop -eval "io:format(\"~s\", [code:lib_dir(erl_interface, lib)]).")
 
 C_SRC_DIR = $(CURDIR)
 C_SRC_OUTPUT ?= $(CURDIR)/../priv/$(PROJECT).so
@@ -66,10 +64,10 @@ else ifeq ($(UNAME_SYS), Linux)
 	CXXFLAGS ?= -O3 -std=c++11 -finline-functions -Wall -DOS_LINUX
 endif
 
-CFLAGS += -fPIC -I $(ERTS_INCLUDE_DIR) -I $(ERL_INTERFACE_INCLUDE_DIR)
-CXXFLAGS += -fPIC -I $(ERTS_INCLUDE_DIR) -I $(ERL_INTERFACE_INCLUDE_DIR)
+CFLAGS += -fPIC -I $(ERTS_INCLUDE_DIR)
+CXXFLAGS += -fPIC -I $(ERTS_INCLUDE_DIR)
 
-LDLIBS += -L $(ERL_INTERFACE_LIB_DIR) -lerl_interface -lei
+LDLIBS +=
 LDFLAGS += -shared
 
 # Verbosity.