--- src/luarocks/core/cfg.lua.orig	2023-03-01 05:39:33
+++ src/luarocks/core/cfg.lua	2023-03-01 05:56:59
@@ -380,7 +380,7 @@
       defaults.variables.CC = os.getenv("CC") or "gcc"
       defaults.variables.LD = os.getenv("CC") or "gcc"
       defaults.gcc_rpath = true
-      defaults.variables.LIBFLAG = "-shared"
+      defaults.variables.LIBFLAG = (os.getenv("LDFLAGS") or "").." -shared"
       defaults.variables.TEST = "test"
 
       defaults.external_deps_patterns = {
@@ -465,7 +465,7 @@
       defaults.variables.MAKE = os.getenv("MAKE") or "make"
       defaults.external_lib_extension = "dylib"
       defaults.arch = "macosx-"..target_cpu
-      defaults.variables.LIBFLAG = "-bundle -undefined dynamic_lookup -all_load"
+      defaults.variables.LIBFLAG = (os.getenv("LDFLAGS") or "").." -bundle -undefined dynamic_lookup -all_load"
       local version = util.popen_read("sw_vers -productVersion")
       if not (version:match("^%d+%.%d+%.%d+$") or version:match("^%d+%.%d+$")) then
          version = "10.3"
@@ -492,8 +492,8 @@
          table.insert(defaults.runtime_external_deps_patterns.lib, 1, "lib?.tbd")
       end
 
-      -- Homebrew
-      table.insert(defaults.external_deps_dirs, "/usr/local/opt")
+      -- MacPorts
+      table.insert(defaults.external_deps_dirs, 1, "%PREFIX%")
       defaults.external_deps_subdirs.lib = { "", "lib", }
       defaults.runtime_external_deps_subdirs.lib = { "", "lib", }
       table.insert(defaults.external_deps_patterns.lib, 1, "/?/lib/lib?.dylib")