EDK2 doens't respect HOSTCFLAGS and HOSTLDFLAGS which we need to pass the sysroot
and target flags to the compiler and linker.
 
diff --git a/BaseTools/Source/C/VfrCompile/Pccts/dlg/makefile b/BaseTools/Source/C/VfrCompile/Pccts/dlg/makefile
--- a/BaseTools/Source/C/VfrCompile/Pccts/dlg/makefile
+++ b/BaseTools/Source/C/VfrCompile/Pccts/dlg/makefile
@@ -131,16 +131,17 @@
 COPT=-O
 ANTLR=${BIN_DIR}/antlr
 DLG=${BIN_DIR}/dlg
 CFLAGS= $(COPT) -I. -I$(SET) -I$(PCCTS_H) -DUSER_ZZSYN -DZZLEXBUFSIZE=65536 -std=gnu11
+CFLAGS += $(HOSTCFLAGS)
 CPPFLAGS=
 OBJ_EXT=o
 OUT_OBJ = -o
 OBJ = dlg_p.o dlg_a.o main.o err.o set.o support.o output.o \
         relabel.o automata.o
 
 $(BIN_DIR)/dlg : $(OBJ) $(SRC)
-		$(CC) $(CFLAGS) -o $(BIN_DIR)/dlg $(OBJ)
+		$(CC) $(HOSTLDFLAGS) -o $(BIN_DIR)/dlg $(OBJ)
 
 SRC = dlg_p.c dlg_a.c main.c err.c $(SET)/set.c support.c output.c \
         relabel.c automata.c
 
diff --git a/BaseTools/Source/C/VfrCompile/Pccts/antlr/makefile b/BaseTools/Source/C/VfrCompile/Pccts/antlr/makefile
--- a/BaseTools/Source/C/VfrCompile/Pccts/antlr/makefile
+++ b/BaseTools/Source/C/VfrCompile/Pccts/antlr/makefile
@@ -176,8 +176,9 @@
 DLG=${BIN_DIR}/dlg
 OBJ_EXT=o
 OUT_OBJ = -o
 CFLAGS= $(COPT) -I. -I$(SET) -I$(PCCTS_H) -DUSER_ZZSYN $(COTHER) -DZZLEXBUFSIZE=65536 -std=gnu11
+CFLAGS += $(HOSTCFLAGS)
 CPPFLAGS=
 #
 # SGI Users, use this CFLAGS
 #
@@ -185,9 +186,9 @@
 OBJ=antlr.o scan.o err.o bits.o build.o fset2.o fset.o gen.o  \
         globals.o hash.o lex.o main.o misc.o set.o pred.o egman.o mrhoist.o fcache.o
 
 $(BIN_DIR)/antlr : $(OBJ) $(SRC)
-		$(CC) $(CFLAGS) -o $(BIN_DIR)/antlr $(OBJ)
+		$(CC) $(HOSTLDFLAGS) -o $(BIN_DIR)/antlr $(OBJ)
 
 # what files does PCCTS generate (both ANTLR and DLG)
 PCCTS_GEN=antlr.c scan.c err.c tokens.h mode.h parser.dlg stdpccts.h remap.h
 
diff --git a/BaseTools/Source/C/GNUmakefile b/BaseTools/Source/C/GNUmakefile
--- a/BaseTools/Source/C/GNUmakefile
+++ b/BaseTools/Source/C/GNUmakefile
@@ -50,9 +50,8 @@
 
 LIBRARIES = Common
 VFRAUTOGEN = VfrCompile/VfrLexer.h
 APPLICATIONS = \
-  BrotliCompress \
   VfrCompile \
   EfiRom \
   GenFfs \
   GenFv \