more conservative compiler options for older compilers
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@ -21,7 +21,7 @@ LIBS = -lm
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# flags for the compiler
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CFLAGS ?= -Wall -W -Wno-unused-parameter -Wno-sign-compare
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CFLAGS += -g -Os -std=gnu99 -mstrict-X -fgnu89-inline -D_XOPEN_SOURCE=600 -DNDEBUG
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CFLAGS += -g -Os -std=gnu99 -fgnu89-inline -D_XOPEN_SOURCE=600 -DNDEBUG
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# flags for the linker
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LDFLAGS += -T ./avr5.x -Wl,-Map,image.map -mmcu=$(MCU)
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@ -39,7 +39,7 @@ ifeq ($(OSTYPE),cygwin)
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LDFLAGS_SIM = -Wl -T simulator/i386pe.x
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LIBS_SIM = -lgdi32 -lwinmm -lm
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else
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CFLAGS_SIM = -g -g -Wall -pedantic -std=c99 -O0 -D_XOPEN_SOURCE=600
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CFLAGS_SIM = -g -Wall -pedantic -std=c99 -O0 -D_XOPEN_SOURCE=600
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ifeq ($(MACHINE),x86_64)
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LDFLAGS_SIM = -g -Wl -T simulator/elf_x86_64.x
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else
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