fix: fix some build issues on Mac

Author: JamesPiechota

README.md

@@ -52,8 +52,10 @@ for more information on running your own VDF server.
   1. Install [Homebrew](https://brew.sh/)
   2. Install dependencies
   ```sh
-  brew install gmp [email protected] erlang cmake pkg-config
+  brew install gmp [email protected] erlang@24 cmake pkg-config
   ```
+  3. Homebrew may ask you to update your `LDFLAGS` for erlang: don't. You should however
+  update your `PATH` as requested.
 
   **Notes:** 
   1. This process has only been tested on a fresh install of MacOS Ventura running on a Mac Mini M2. It may or may not work on other configurations.

apps/arweave/c_src/Makefile

@@ -25,14 +25,14 @@ ifeq ($(UNAME_SYS), Darwin)
 	OSX_CPU_ARCH ?= x86_64
 	# nix systems may not have sysctl where uname -m will return the correct arch
 	SYSCTL_EXISTS := $(shell which sysctl 2>/dev/null)
-	ifdef SYSCTL_EXISTS
-		ifneq ($(shell sysctl -n machdep.cpu.brand_string | egrep "M(1|2)"),)
-	  	OSX_CPU_ARCH = arm64
-		endif
-  	else
-		ifneq ($(shell uname -m | egrep "arm64"),)
-	  	OSX_CPU_ARCH = arm64
+	ifneq ($(shell uname -m | egrep "arm64"),)
+		OSX_CPU_ARCH = arm64
+	else
+		ifdef SYSCTL_EXISTS
+			ifneq ($(shell sysctl -n machdep.cpu.brand_string | egrep "M(1|2)"),)
+				OSX_CPU_ARCH = arm64
 			endif
+		endif
 	endif
 	CC ?= cc
 	CFLAGS += -std=c99 -arch $(OSX_CPU_ARCH) -finline-functions -Wall -Wmissing-prototypes

rebar.config

@@ -1,6 +1,6 @@
 {deps, [
 	{b64fast, {git, "https://github.com/ArweaveTeam/b64fast.git", {ref, "58f0502e49bf73b29d95c6d02460d1fb8d2a5273"}}},
-	{jiffy, {git, "https://github.com/ArweaveTeam/jiffy.git", {ref, "74c956defa9116c85d76f77c3e9b5bd6de7bd39a"}}},
+	{jiffy, {git, "https://github.com/ArweaveTeam/jiffy.git", {ref, "f25a120f02951b9fd618d1f8f6343fdb8dbe133f"}}},
 	{gun, "1.3.3"},
 	{cowboy, "2.10.0"},
 	{graphql, {git, "https://github.com/shopgun/graphql-erlang.git", {branch, "master"}}},

rebar.lock

@@ -13,7 +13,7 @@
  {<<"gun">>,{pkg,<<"gun">>,<<"1.3.3">>},0},
  {<<"jiffy">>,
   {git,"https://github.com/ArweaveTeam/jiffy.git",
-       {ref,"74c956defa9116c85d76f77c3e9b5bd6de7bd39a"}},
+       {ref,"f25a120f02951b9fd618d1f8f6343fdb8dbe133f"}},
   0},
  {<<"prometheus">>,{pkg,<<"prometheus">>,<<"4.11.0">>},0},
  {<<"prometheus_cowboy">>,{pkg,<<"prometheus_cowboy">>,<<"0.1.8">>},0},