Don't override MacPorts CFLAGS and LDFLAGS.
--- edbrowse/src/makefile.orig	2023-01-08 04:41:52.000000000 -0600
+++ edbrowse/src/makefile	2023-01-11 21:36:11.000000000 -0600
@@ -31,7 +31,7 @@
 CFLAGS += $(DEBUGFLAGS)
 
 #  Libraries and linker flags for edbrowse.
-LDFLAGS = $(STRIP) $(LINKER_LIBS) -lpthread -lm -lssl -lcrypto
+LDFLAGS += $(STRIP) $(LINKER_LIBS) -lpthread -lm -lssl -lcrypto
 
 # LDFLAGS for quickjs loading.
 QUICKJS_LDFLAGS = $(QUICKJS_DIR)/libquickjs.a -ldl
--- quickjs/Makefile.orig	2021-03-27 05:00:32.000000000 -0500
+++ quickjs/Makefile	2022-06-21 03:24:49.000000000 -0500
@@ -66,7 +66,7 @@
 ifdef CONFIG_CLANG
   HOST_CC=clang
   CC=$(CROSS_PREFIX)clang
-  CFLAGS=-g -Wall -MMD -MF $(OBJDIR)/$(@F).d
+  CFLAGS += -g -Wall -MMD -MF $(OBJDIR)/$(@F).d
   CFLAGS += -Wextra
   CFLAGS += -Wno-sign-compare
   CFLAGS += -Wno-missing-field-initializers
@@ -87,7 +87,7 @@
 else
   HOST_CC=gcc
   CC=$(CROSS_PREFIX)gcc
-  CFLAGS=-g -Wall -MMD -MF $(OBJDIR)/$(@F).d
+  CFLAGS += -g -Wall -MMD -MF $(OBJDIR)/$(@F).d
   CFLAGS += -Wno-array-bounds -Wno-format-truncation
   ifdef CONFIG_LTO
     AR=$(CROSS_PREFIX)gcc-ar
@@ -112,7 +112,7 @@
 CFLAGS_SMALL=$(CFLAGS) -Os
 CFLAGS_OPT=$(CFLAGS) -O2
 CFLAGS_NOLTO:=$(CFLAGS_OPT)
-LDFLAGS=-g
+LDFLAGS+=-g
 ifdef CONFIG_LTO
 CFLAGS_SMALL+=-flto
 CFLAGS_OPT+=-flto