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Subject:	Make 4.3 crash when compiling 86duino example under WXP-NTVDM
From:	"RayeR (rayer314 AT gmail DOT com) [via djgpp AT delorie DOT com]" <djgpp AT delorie DOT com>
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To:	djgpp AT delorie DOT com
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I just found a strange behavior of new make 4.3 when compiling 86duino example under WXP-NTVDM i got crash:

N:\86DUINO.SDK\EXAMPLE>make -v
GNU Make 4.3  (DJGPP port (r1))
Built for i786-pc-msdosdjgpp
Copyright (C) 1988-2020 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law.

N:\86DUINO.SDK\EXAMPLE>make
make -C N:\86DUINO.SDK\core
memblockpnxt: memory fouled
Exiting due to signal SIGABRT
Raised at eip=0003b3dc
eax=000d9440 ebx=00000120 ecx=00000000 edx=00000000 esi=000524c8 edi=00000000
ebp=000d94f8 esp=000d9430 program=E:\DJGPP\BIN\make.exe
cs: sel=01ff  base=02b00000  limit=0010ffff
ds: sel=0207  base=02b00000  limit=0010ffff
es: sel=0207  base=02b00000  limit=0010ffff
fs: sel=01d7  base=0000ece0  limit=0000ffff
gs: sel=0217  base=00000000  limit=0010ffff
ss: sel=0207  base=02b00000  limit=0010ffff
App stack: [000daa50..0005aa50]  Exceptn stack: [0005a96c..00058a2c]

Call frame traceback EIPs:
  0x0003b32b
  0x0003b3dc
  0x0002b250
  0x0002b4ac
  0x00025b5e
  0x00026661
  0x0001a8eb
  0x00009f92
  0x0000afe3
  0x0000b290
  0x000058a7
  0x00005d93
  0x00005e5a
  0x0002329b
  0x00023b4b
  0x0001b49e
  0x0001d266
  0x0001d569
  0x000159de
  0x000343e4
make: *** [Makefile:30: libcore.a] Error -1

When I revert to older Make 4.1 (11.7.2015) it compiles without problem.

N:\86DUINO.SDK\EXAMPLE>make -v
GNU Make 4.1  (DJGPP port (r1))
Built for i786-pc-msdosdjgpp
Copyright (C) 1988-2014 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law.

N:\86DUINO.SDK\EXAMPLE>make
make -C N:\86DUINO.SDK\core
make.exe[1]: Entering directory 'n:/86duino.sdk/core'
make.exe[1]: Nothing to be done for 'everything'.
make.exe[1]: Leaving directory 'n:/86duino.sdk/core'
gcc -c -w -g -fno-exceptions -ffunction-sections -fdata-sections -fno-threadsafe
-statics -O1 -DARDUINO=158 -D_86DUINO=210 example.cpp -o example.o -IN:\86DUINO.
SDK\core -IN:\86DUINO.SDK\libraries\TimerOne
gcc -w -Wl,--gc-sections -O1 -Wl,--start-group example.o N:\86DUINO.SDK\core\lib
core.a N:\86DUINO.SDK\core\86Duino_Init.o -lTimerOne  -lstdcxx -Wl,--end-group -
o 86DUINO.exe -LN:\86DUINO.SDK\libraries\TimerOne

The Makefile (compiling just one example.cpp):

CC := gcc
CFLAGS := -c -w -g -fno-exceptions -ffunction-sections -fdata-sections -fno-threadsafe-statics -O1 -DARDUINO=158 -D_86DUINO=210
LINK_FLAGS := -w -Wl,--gc-sections -O1

LIB_PATH := $(86DUINO_DIR)\core
LIB_INCLUDE := -I$(86DUINO_DIR)\core
LIB := libcore.a
INIT_OBJS := 86Duino_Init.o

THIRD_LIB_NAME := TimerOne
THIRD_LIB_INCLUDE := $(addprefix -I$(86DUINO_DIR)\libraries\,$(THIRD_LIB_NAME))
THIRD_LIB_PATH := $(addprefix -L$(86DUINO_DIR)\libraries\,$(THIRD_LIB_NAME))
THIRD_LIB := $(addprefix -l,$(THIRD_LIB_NAME))
EXTEN_LIB :=

SRCS := $(wildcard *.cpp)
OBJS := $(patsubst %cpp,%o,$(SRCS))
TARGETS := 86DUINO.exe

.PHONY : everything clean all $(LIB)

everything: $(LIB) $(TARGETS)

clean:
	rm $(OBJS) $(TARGETS)

all: clean everything

$(LIB):
	make -C $(LIB_PATH)

$(TARGETS): $(OBJS) $(LIB_PATH)\$(LIB) $(LIB_PATH)\$(INIT_OBJS)
	$(CC) $(LINK_FLAGS) -Wl,--start-group $^ $(THIRD_LIB) $(EXTEN_LIB) -lstdcxx -Wl,--end-group -o $@ $(THIRD_LIB_PATH) 

%.o: %.cpp
	$(CC) $(CFLAGS) $< -o $@ $(LIB_INCLUDE) $(THIRD_LIB_INCLUDE)

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