diff --git a/Makefile b/Makefile
index 78a2c2a4f..2e5a341dd 100644
--- a/Makefile
+++ b/Makefile
@@ -1,29 +1,26 @@
 TOOLCHAIN := $(DEVKITARM)
 COMPARE ?= 0
 
-ifeq ($(CC),)
-HOSTCC := gcc
-else
-HOSTCC := $(CC)
-endif
+# don't use dkP's base_tools anymore
+# because the redefinition of $(CC) conflicts
+# with when we want to use $(CC) to preprocess files
+# thus, manually create the variables for the bin
+# files, or use arm-none-eabi binaries on the system
+# if dkP is not installed on tihs system
 
-ifeq ($(CXX),)
-HOSTCXX := g++
-else
-HOSTCXX := $(CXX)
-endif
-
-ifneq (,$(wildcard $(TOOLCHAIN)/base_tools))
-include $(TOOLCHAIN)/base_tools
-else
+ifneq ($(wildcard $(TOOLCHAIN)/bin),)
 export PATH := $(TOOLCHAIN)/bin:$(PATH)
+endif
+
 PREFIX := arm-none-eabi-
 OBJCOPY := $(PREFIX)objcopy
-export CC := $(PREFIX)gcc
-export AS := $(PREFIX)as
-endif
-export CPP := $(PREFIX)cpp
-export LD := $(PREFIX)ld
+AS := $(PREFIX)as
+CPP := $(CC) -E
+LD := $(PREFIX)ld
+
+# note: the makefile must be set up so MODERNCC is never called
+# if MODERN=0
+MODERNCC := $(PREFIX)gcc
 
 ifeq ($(OS),Windows_NT)
 EXE := .exe
@@ -37,6 +34,16 @@ MAKER_CODE  := 01
 REVISION    := 0
 MODERN      ?= 0
 
+ROM_NAME := pokeemerald.gba
+ELF_NAME := $(ROM_NAME:.gba=.elf)
+MAP_NAME := $(ROM_NAME:.gba=.map)
+OBJ_DIR_NAME := build/emerald
+
+MODERN_ROM_NAME := pokeemerald_modern.gba
+MODERN_ELF_NAME := $(MODERN_ROM_NAME:.gba=.elf)
+MODERN_MAP_NAME := $(MODERN_ROM_NAME:.gba=.map)
+MODERN_OBJ_DIR_NAME := build/modern
+
 SHELL := /bin/bash -o pipefail
 
 ELF = $(ROM:.gba=.elf)
@@ -64,18 +71,18 @@ ASFLAGS := -mcpu=arm7tdmi --defsym MODERN=$(MODERN)
 ifeq ($(MODERN),0)
 CC1             := tools/agbcc/bin/agbcc$(EXE)
 override CFLAGS += -mthumb-interwork -Wimplicit -Wparentheses -Werror -O2 -fhex-asm -g
-ROM := pokeemerald.gba
-OBJ_DIR := build/emerald
+ROM := $(ROM_NAME)
+OBJ_DIR := $(OBJ_DIR_NAME)
 LIBPATH := -L ../../tools/agbcc/lib
 else
-CC1              = $(shell $(CC) --print-prog-name=cc1) -quiet
+CC1              = $(shell $(MODERNCC) --print-prog-name=cc1) -quiet
 override CFLAGS += -mthumb -mthumb-interwork -O2 -mabi=apcs-gnu -mtune=arm7tdmi -march=armv4t -fno-toplevel-reorder -Wno-pointer-to-int-cast -g
-ROM := pokeemerald_modern.gba
-OBJ_DIR := build/modern
-LIBPATH := -L "$(dir $(shell $(CC) -mthumb -print-file-name=libgcc.a))" -L "$(dir $(shell $(CC) -mthumb -print-file-name=libc.a))"
+ROM := $(MODERN_ROM_NAME)
+OBJ_DIR := $(MODERN_OBJ_DIR_NAME)
+LIBPATH := -L "$(dir $(shell $(MODERNCC) -mthumb -print-file-name=libgcc.a))" -L "$(dir $(shell $(MODERNCC) -mthumb -print-file-name=libc.a))"
 endif
 
-CPPFLAGS := -iquote include -iquote $(GFLIB_SUBDIR) -Wno-trigraphs -DMODERN=$(MODERN)
+CPPFLAGS := -iquote include -iquote $(GFLIB_SUBDIR) -Wno-trigraphs -DMODERN=$(MODERN) -nostdinc -undef
 ifeq ($(MODERN),0)
 CPPFLAGS += -I tools/agbcc/include -I tools/agbcc
 endif
@@ -111,7 +118,7 @@ MAKEFLAGS += --no-print-directory
 # Secondary expansion is required for dependency variables in object rules.
 .SECONDEXPANSION:
 
-.PHONY: all rom clean compare tidy tools mostlyclean clean-tools $(TOOLDIRS) berry_fix libagbsyscall modern
+.PHONY: all rom clean compare tidy tools mostlyclean clean-tools $(TOOLDIRS) berry_fix libagbsyscall modern tidymodern tidynonmodern
 
 infoshell = $(foreach line, $(shell $1 | sed "s/ /__SPACE__/g"), $(info $(subst __SPACE__, ,$(line))))
 
@@ -162,7 +169,7 @@ all: rom
 tools: $(TOOLDIRS)
 
 $(TOOLDIRS):
-	@$(MAKE) -C $@ CC=$(HOSTCC) CXX=$(HOSTCXX)
+	@$(MAKE) -C $@
 
 rom: $(ROM)
 ifeq ($(COMPARE),1)
@@ -177,7 +184,7 @@ clean: mostlyclean clean-tools
 clean-tools:
 	@$(foreach tooldir,$(TOOLDIRS),$(MAKE) clean -C $(tooldir);)
 
-mostlyclean: tidy
+mostlyclean: tidynonmodern tidymodern
 	rm -f $(SAMPLE_SUBDIR)/*.bin
 	rm -f $(CRY_SUBDIR)/*.bin
 	rm -f $(MID_SUBDIR)/*.s
@@ -192,10 +199,15 @@ mostlyclean: tidy
 tidy:
 	rm -f $(ROM) $(ELF) $(MAP)
 	rm -r $(OBJ_DIR)
-ifeq ($(MODERN),0)
-	@$(MAKE) tidy MODERN=1
-endif
 
+tidynonmodern:
+	rm -f $(ROM_NAME) $(ELF_NAME) $(MAP_NAME)
+	rm -rf $(OBJ_DIR_NAME)
+
+tidymodern:
+	rm -f $(MODERN_ROM_NAME) $(MODERN_ELF_NAME) $(MODERN_MAP_NAME)
+	rm -rf $(MODERN_OBJ_DIR_NAME)
+	
 ifneq ($(MODERN),0)
 $(C_BUILDDIR)/berry_crush.o: override CFLAGS += -Wno-address-of-packed-member
 endif
@@ -223,7 +235,7 @@ sound/%.bin: sound/%.aif ; $(AIF) $< $@
 
 
 ifeq ($(MODERN),0)
-$(C_BUILDDIR)/libc.o: CC1 := tools/agbcc/bin/old_agbcc
+$(C_BUILDDIR)/libc.o: CC1 := tools/agbcc/bin/old_agbcc$(EXE)
 $(C_BUILDDIR)/libc.o: CFLAGS := -O2
 
 $(C_BUILDDIR)/siirtc.o: CFLAGS := -mthumb-interwork
@@ -232,10 +244,10 @@ $(C_BUILDDIR)/agb_flash.o: CFLAGS := -O -mthumb-interwork
 $(C_BUILDDIR)/agb_flash_1m.o: CFLAGS := -O -mthumb-interwork
 $(C_BUILDDIR)/agb_flash_mx.o: CFLAGS := -O -mthumb-interwork
 
-$(C_BUILDDIR)/m4a.o: CC1 := tools/agbcc/bin/old_agbcc
+$(C_BUILDDIR)/m4a.o: CC1 := tools/agbcc/bin/old_agbcc$(EXE)
 
 $(C_BUILDDIR)/record_mixing.o: CFLAGS += -ffreestanding
-$(C_BUILDDIR)/librfu_intr.o: CC1 := tools/agbcc/bin/agbcc_arm
+$(C_BUILDDIR)/librfu_intr.o: CC1 := tools/agbcc/bin/agbcc_arm$(EXE)
 $(C_BUILDDIR)/librfu_intr.o: CFLAGS := -O2 -mthumb-interwork -quiet
 else
 $(C_BUILDDIR)/librfu_intr.o: CFLAGS := -mthumb-interwork -O2 -mabi=apcs-gnu -mtune=arm7tdmi -march=armv4t -fno-toplevel-reorder -Wno-pointer-to-int-cast
@@ -296,11 +308,11 @@ endif
 
 ifeq ($(NODEP),1)
 $(DATA_ASM_BUILDDIR)/%.o: $(DATA_ASM_SUBDIR)/%.s
-	$(PREPROC) $< charmap.txt | $(CPP) -I include | $(AS) $(ASFLAGS) -o $@
+	$(PREPROC) $< charmap.txt | $(CPP) -I include - | $(AS) $(ASFLAGS) -o $@
 else
 define DATA_ASM_DEP
 $1: $2 $$(shell $(SCANINC) -I include -I "" $2)
-	$$(PREPROC) $$< charmap.txt | $$(CPP) -I include | $$(AS) $$(ASFLAGS) -o $$@
+	$$(PREPROC) $$< charmap.txt | $$(CPP) -I include - | $$(AS) $$(ASFLAGS) -o $$@
 endef
 $(foreach src, $(REGULAR_DATA_ASM_SRCS), $(eval $(call DATA_ASM_DEP,$(patsubst $(DATA_ASM_SUBDIR)/%.s,$(DATA_ASM_BUILDDIR)/%.o, $(src)),$(src))))
 endif
@@ -329,7 +341,8 @@ $(OBJ_DIR)/ld_script.ld: $(LD_SCRIPT) $(LD_SCRIPT_DEPS)
 	cd $(OBJ_DIR) && sed "s#tools/#../../tools/#g" ../../$(LD_SCRIPT) > ld_script.ld
 
 $(ELF): $(OBJ_DIR)/ld_script.ld $(OBJS) berry_fix libagbsyscall
-	cd $(OBJ_DIR) && $(LD) $(LDFLAGS) -T ld_script.ld -o ../../$@ $(OBJS_REL) $(LIB)
+	@echo "cd $(OBJ_DIR) && $(LD) $(LDFLAGS) -T ld_script.ld -o ../../$@ <objects> <lib>"
+	@cd $(OBJ_DIR) && $(LD) $(LDFLAGS) -T ld_script.ld -o ../../$@ $(OBJS_REL) $(LIB)
 	$(FIX) $@ -t"$(TITLE)" -c$(GAME_CODE) -m$(MAKER_CODE) -r$(REVISION) --silent
 
 $(ROM): $(ELF)
diff --git a/asmdiff.sh b/asmdiff.sh
index 6ea588131..f5a701074 100755
--- a/asmdiff.sh
+++ b/asmdiff.sh
@@ -1,11 +1,19 @@
 #!/bin/bash
 
-OBJDUMP="$DEVKITARM/bin/arm-none-eabi-objdump -D -bbinary -marmv4t -Mforce-thumb"
+if [[ -d "$DEVKITARM/bin/" ]]; then
+    OBJDUMP_BIN="$DEVKITARM/bin/arm-none-eabi-objdump"
+else
+    OBJDUMP_BIN="arm-none-eabi-objdump"
+fi
+
+OBJDUMP="$OBJDUMP_BIN -D -bbinary -marmv4t -Mforce-thumb"
+
 if [ $(($1)) -ge $((0x8000000)) ]; then
     OPTIONS="--adjust-vma=0x8000000 --start-address=$(($1)) --stop-address=$(($1 + $2))"
 else
     OPTIONS="--start-address=$(($1)) --stop-address=$(($1 + $2))"
 fi
+
 $OBJDUMP $OPTIONS baserom.gba > baserom.dump
 $OBJDUMP $OPTIONS pokeemerald.gba > pokeemerald.dump
 diff -u baserom.dump pokeemerald.dump
diff --git a/berry_fix/Makefile b/berry_fix/Makefile
index 0ead3804f..6aab4ed62 100644
--- a/berry_fix/Makefile
+++ b/berry_fix/Makefile
@@ -1,29 +1,26 @@
 TOOLCHAIN := $(DEVKITARM)
 COMPARE ?= 0
 
-ifeq ($(CC),)
-HOSTCC := gcc
-else
-HOSTCC := $(CC)
-endif
+# don't use dkP's base_tools anymore
+# because the redefinition of $(CC) conflicts
+# with when we want to use $(CC) to preprocess files
+# thus, manually create the variables for the bin
+# files, or use arm-none-eabi binaries on the system
+# if dkP is not installed on tihs system
 
-ifeq ($(CXX),)
-HOSTCXX := g++
-else
-HOSTCXX := $(CXX)
-endif
-
-ifneq (,$(wildcard $(TOOLCHAIN)/base_tools))
-include $(TOOLCHAIN)/base_tools
-else
+ifneq ($(wildcard $(TOOLCHAIN)/bin),)
 export PATH := $(TOOLCHAIN)/bin:$(PATH)
+endif
+
 PREFIX := arm-none-eabi-
 OBJCOPY := $(PREFIX)objcopy
-export CC := $(PREFIX)gcc
-export AS := $(PREFIX)as
-endif
-export CPP := $(PREFIX)cpp
-export LD := $(PREFIX)ld
+AS := $(PREFIX)as
+CPP := $(CC) -E
+LD := $(PREFIX)ld
+
+# note: the makefile must be set up so MODERNCC is never called
+# if MODERN=0
+MODERNCC := $(PREFIX)gcc
 
 ifeq ($(OS),Windows_NT)
 EXE := .exe
diff --git a/berry_fix/payload/Makefile b/berry_fix/payload/Makefile
index a121fda93..ad8787c34 100644
--- a/berry_fix/payload/Makefile
+++ b/berry_fix/payload/Makefile
@@ -1,29 +1,26 @@
 TOOLCHAIN := $(DEVKITARM)
 COMPARE ?= 0
 
-ifeq ($(CC),)
-HOSTCC := gcc
-else
-HOSTCC := $(CC)
-endif
+# don't use dkP's base_tools anymore
+# because the redefinition of $(CC) conflicts
+# with when we want to use $(CC) to preprocess files
+# thus, manually create the variables for the bin
+# files, or use arm-none-eabi binaries on the system
+# if dkP is not installed on tihs system
 
-ifeq ($(CXX),)
-HOSTCXX := g++
-else
-HOSTCXX := $(CXX)
-endif
-
-ifneq (,$(wildcard $(TOOLCHAIN)/base_tools))
-include $(TOOLCHAIN)/base_tools
-else
+ifneq ($(wildcard $(TOOLCHAIN)/bin),)
 export PATH := $(TOOLCHAIN)/bin:$(PATH)
+endif
+
 PREFIX := arm-none-eabi-
 OBJCOPY := $(PREFIX)objcopy
-export CC := $(PREFIX)gcc
-export AS := $(PREFIX)as
-endif
-export CPP := $(PREFIX)cpp
-export LD := $(PREFIX)ld
+AS := $(PREFIX)as
+CPP := $(CC) -E
+LD := $(PREFIX)ld
+
+# note: the makefile must be set up so MODERNCC is never called
+# if MODERN=0
+MODERNCC := $(PREFIX)gcc
 
 ifeq ($(OS),Windows_NT)
 EXE := .exe
diff --git a/libagbsyscall/Makefile b/libagbsyscall/Makefile
index 911cdb237..e1f502b2f 100644
--- a/libagbsyscall/Makefile
+++ b/libagbsyscall/Makefile
@@ -1,29 +1,26 @@
 TOOLCHAIN := $(DEVKITARM)
 COMPARE ?= 0
 
-ifeq ($(CC),)
-HOSTCC := gcc
-else
-HOSTCC := $(CC)
-endif
+# don't use dkP's base_tools anymore
+# because the redefinition of $(CC) conflicts
+# with when we want to use $(CC) to preprocess files
+# thus, manually create the variables for the bin
+# files, or use arm-none-eabi binaries on the system
+# if dkP is not installed on tihs system
 
-ifeq ($(CXX),)
-HOSTCXX := g++
-else
-HOSTCXX := $(CXX)
-endif
-
-ifneq (,$(wildcard $(TOOLCHAIN)/base_tools))
-include $(TOOLCHAIN)/base_tools
-else
+ifneq ($(wildcard $(TOOLCHAIN)/bin),)
 export PATH := $(TOOLCHAIN)/bin:$(PATH)
+endif
+
 PREFIX := arm-none-eabi-
 OBJCOPY := $(PREFIX)objcopy
-export CC := $(PREFIX)gcc
-export AS := $(PREFIX)as
-endif
-export CPP := $(PREFIX)cpp
-export LD := $(PREFIX)ld
+AS := $(PREFIX)as
+CPP := $(CC) -E
+LD := $(PREFIX)ld
+
+# note: the makefile must be set up so MODERNCC is never called
+# if MODERN=0
+MODERNCC := $(PREFIX)gcc
 
 ifeq ($(OS),Windows_NT)
 EXE := .exe
diff --git a/map_data_rules.mk b/map_data_rules.mk
index 0203b383d..626cd4724 100755
--- a/map_data_rules.mk
+++ b/map_data_rules.mk
@@ -9,9 +9,9 @@ MAP_EVENTS := $(patsubst $(MAPS_DIR)/%/,$(MAPS_DIR)/%/events.inc,$(MAP_DIRS))
 MAP_HEADERS := $(patsubst $(MAPS_DIR)/%/,$(MAPS_DIR)/%/header.inc,$(MAP_DIRS))
 
 $(DATA_ASM_BUILDDIR)/maps.o: $(DATA_ASM_SUBDIR)/maps.s $(LAYOUTS_DIR)/layouts.inc $(LAYOUTS_DIR)/layouts_table.inc $(MAPS_DIR)/headers.inc $(MAPS_DIR)/groups.inc $(MAPS_DIR)/connections.inc $(MAP_CONNECTIONS) $(MAP_HEADERS)
-	$(PREPROC) $< charmap.txt | $(CPP) -I include | $(AS) $(ASFLAGS) -o $@
+	$(PREPROC) $< charmap.txt | $(CPP) -I include - | $(AS) $(ASFLAGS) -o $@
 $(DATA_ASM_BUILDDIR)/map_events.o: $(DATA_ASM_SUBDIR)/map_events.s $(MAPS_DIR)/events.inc $(MAP_EVENTS)
-	$(PREPROC) $< charmap.txt | $(CPP) -I include | $(AS) $(ASFLAGS) -o $@
+	$(PREPROC) $< charmap.txt | $(CPP) -I include - | $(AS) $(ASFLAGS) -o $@
 
 $(MAPS_DIR)/%/header.inc: $(MAPS_DIR)/%/map.json
 	$(MAPJSON) map emerald $< $(LAYOUTS_DIR)/layouts.json
diff --git a/tools/aif2pcm/Makefile b/tools/aif2pcm/Makefile
index 77df29152..dd48a8759 100644
--- a/tools/aif2pcm/Makefile
+++ b/tools/aif2pcm/Makefile
@@ -6,12 +6,18 @@ LIBS = -lm
 
 SRCS = main.c extended.c
 
+ifeq ($(OS),Windows_NT)
+EXE := .exe
+else
+EXE :=
+endif
+
 .PHONY: all clean
 
-all: aif2pcm
+all: aif2pcm$(EXE)
 	@:
 
-aif2pcm: $(SRCS)
+aif2pcm$(EXE): $(SRCS)
 	$(CC) $(CFLAGS) $(SRCS) -o $@ $(LDFLAGS) $(LIBS)
 
 clean:
diff --git a/tools/bin2c/Makefile b/tools/bin2c/Makefile
index 52806e39c..4dbfab94f 100644
--- a/tools/bin2c/Makefile
+++ b/tools/bin2c/Makefile
@@ -6,10 +6,16 @@ CFLAGS = -Wall -Wextra -Werror -std=c11 -O2
 
 SRCS = bin2c.c
 
-all: bin2c
+ifeq ($(OS),Windows_NT)
+EXE := .exe
+else
+EXE :=
+endif
+
+all: bin2c$(EXE)
 	@:
 
-bin2c: $(SRCS)
+bin2c$(EXE): $(SRCS)
 	$(CC) $(CFLAGS) $(SRCS) -o $@ $(LDFLAGS)
 
 clean:
diff --git a/tools/gbafix/Makefile b/tools/gbafix/Makefile
index 91a60a9e4..efb016c97 100644
--- a/tools/gbafix/Makefile
+++ b/tools/gbafix/Makefile
@@ -3,10 +3,16 @@ CC ?= gcc
 
 SRCS = gbafix.c
 
-all: gbafix
+ifeq ($(OS),Windows_NT)
+EXE := .exe
+else
+EXE :=
+endif
+
+all: gbafix$(EXE)
 	@:
 
-gbafix: $(SRCS)
+gbafix$(EXE): $(SRCS)
 	$(CC) $(SRCS) -o $@ $(LDFLAGS)
 
 clean:
diff --git a/tools/gbagfx/Makefile b/tools/gbagfx/Makefile
index f0638414d..b4244aa8d 100644
--- a/tools/gbagfx/Makefile
+++ b/tools/gbagfx/Makefile
@@ -6,15 +6,21 @@ LIBS = -lpng -lz
 
 SRCS = main.c convert_png.c gfx.c jasc_pal.c lz.c rl.c util.c font.c huff.c
 
+ifeq ($(OS),Windows_NT)
+EXE := .exe
+else
+EXE :=
+endif
+
 .PHONY: all clean
 
-all: gbagfx
+all: gbagfx$(EXE)
 	@:
 
-gbagfx-debug: $(SRCS) convert_png.h gfx.h global.h jasc_pal.h lz.h rl.h util.h font.h
+gbagfx-debug$(EXE): $(SRCS) convert_png.h gfx.h global.h jasc_pal.h lz.h rl.h util.h font.h
 	$(CC) $(CFLAGS) -DDEBUG $(SRCS) -o $@ $(LDFLAGS) $(LIBS)
 
-gbagfx: $(SRCS) convert_png.h gfx.h global.h jasc_pal.h lz.h rl.h util.h font.h
+gbagfx$(EXE): $(SRCS) convert_png.h gfx.h global.h jasc_pal.h lz.h rl.h util.h font.h
 	$(CC) $(CFLAGS) $(SRCS) -o $@ $(LDFLAGS) $(LIBS)
 
 clean:
diff --git a/tools/jsonproc/Makefile b/tools/jsonproc/Makefile
index 47198b171..eec73eb7b 100755
--- a/tools/jsonproc/Makefile
+++ b/tools/jsonproc/Makefile
@@ -8,12 +8,18 @@ SRCS := jsonproc.cpp
 
 HEADERS := jsonproc.h inja.hpp nlohmann/json.hpp
 
+ifeq ($(OS),Windows_NT)
+EXE := .exe
+else
+EXE :=
+endif
+
 .PHONY: all clean
 
-all: jsonproc
+all: jsonproc$(EXE)
 	@:
 
-jsonproc: $(SRCS) $(HEADERS)
+jsonproc$(EXE): $(SRCS) $(HEADERS)
 	$(CXX) $(CXXFLAGS) $(INCLUDES) $(SRCS) -o $@ $(LDFLAGS)
 
 clean:
diff --git a/tools/mapjson/Makefile b/tools/mapjson/Makefile
index c1f703f9f..100e809c6 100644
--- a/tools/mapjson/Makefile
+++ b/tools/mapjson/Makefile
@@ -6,12 +6,18 @@ SRCS := json11.cpp mapjson.cpp
 
 HEADERS := mapjson.h
 
+ifeq ($(OS),Windows_NT)
+EXE := .exe
+else
+EXE :=
+endif
+
 .PHONY: all clean
 
-all: mapjson
+all: mapjson$(EXE)
 	@:
 
-mapjson: $(SRCS) $(HEADERS)
+mapjson$(EXE): $(SRCS) $(HEADERS)
 	$(CXX) $(CXXFLAGS) $(SRCS) -o $@ $(LDFLAGS)
 
 clean:
diff --git a/tools/mid2agb/Makefile b/tools/mid2agb/Makefile
index 451d4b39f..553b7859e 100644
--- a/tools/mid2agb/Makefile
+++ b/tools/mid2agb/Makefile
@@ -6,12 +6,18 @@ SRCS := agb.cpp error.cpp main.cpp midi.cpp tables.cpp
 
 HEADERS := agb.h error.h main.h midi.h tables.h
 
+ifeq ($(OS),Windows_NT)
+EXE := .exe
+else
+EXE :=
+endif
+
 .PHONY: all clean
 
-all: mid2agb
+all: mid2agb$(EXE)
 	@:
 
-mid2agb: $(SRCS) $(HEADERS)
+mid2agb$(EXE): $(SRCS) $(HEADERS)
 	$(CXX) $(CXXFLAGS) $(SRCS) -o $@ $(LDFLAGS)
 
 clean:
diff --git a/tools/preproc/Makefile b/tools/preproc/Makefile
index 8c48afea2..1507c973f 100644
--- a/tools/preproc/Makefile
+++ b/tools/preproc/Makefile
@@ -8,12 +8,18 @@ SRCS := asm_file.cpp c_file.cpp charmap.cpp preproc.cpp string_parser.cpp \
 HEADERS := asm_file.h c_file.h char_util.h charmap.h preproc.h string_parser.h \
 	utf8.h
 
+ifeq ($(OS),Windows_NT)
+EXE := .exe
+else
+EXE :=
+endif
+
 .PHONY: all clean
 
-all: preproc
+all: preproc$(EXE)
 	@:
 
-preproc: $(SRCS) $(HEADERS)
+preproc$(EXE): $(SRCS) $(HEADERS)
 	$(CXX) $(CXXFLAGS) $(SRCS) -o $@ $(LDFLAGS)
 
 clean:
diff --git a/tools/ramscrgen/Makefile b/tools/ramscrgen/Makefile
index 4e901a29c..a9375c87a 100644
--- a/tools/ramscrgen/Makefile
+++ b/tools/ramscrgen/Makefile
@@ -8,10 +8,16 @@ HEADERS := ramscrgen.h sym_file.h elf.h char_util.h
 
 .PHONY: all clean
 
-all: ramscrgen
+ifeq ($(OS),Windows_NT)
+EXE := .exe
+else
+EXE :=
+endif
+
+all: ramscrgen$(EXE)
 	@:
 
-ramscrgen: $(SRCS) $(HEADERS)
+ramscrgen$(EXE): $(SRCS) $(HEADERS)
 	$(CXX) $(CXXFLAGS) $(SRCS) -o $@ $(LDFLAGS)
 
 clean:
diff --git a/tools/rsfont/Makefile b/tools/rsfont/Makefile
index 930a92b36..0bc88a42b 100644
--- a/tools/rsfont/Makefile
+++ b/tools/rsfont/Makefile
@@ -8,10 +8,16 @@ SRCS = main.c convert_png.c util.c font.c
 
 .PHONY: all clean
 
-all: rsfont
+ifeq ($(OS),Windows_NT)
+EXE := .exe
+else
+EXE :=
+endif
+
+all: rsfont$(EXE)
 	@:
 
-rsfont: $(SRCS) convert_png.h gfx.h global.h util.h font.h
+rsfont$(EXE): $(SRCS) convert_png.h gfx.h global.h util.h font.h
 	$(CC) $(CFLAGS) $(SRCS) -o $@ $(LDFLAGS) $(LIBS)
 
 clean:
diff --git a/tools/scaninc/Makefile b/tools/scaninc/Makefile
index 52e663d8d..96d92f706 100644
--- a/tools/scaninc/Makefile
+++ b/tools/scaninc/Makefile
@@ -8,10 +8,16 @@ HEADERS := scaninc.h asm_file.h c_file.h source_file.h
 
 .PHONY: all clean
 
-all: scaninc
+ifeq ($(OS),Windows_NT)
+EXE := .exe
+else
+EXE :=
+endif
+
+all: scaninc$(EXE)
 	@:
 
-scaninc: $(SRCS) $(HEADERS)
+scaninc$(EXE): $(SRCS) $(HEADERS)
 	$(CXX) $(CXXFLAGS) $(SRCS) -o $@ $(LDFLAGS)
 
 clean: