在我试图建造的图书馆的“马克”档案中,有几条线规定了以下选择:
CFLAGS += -I$(CURDIR) -pedantic -std=c89 -O3
CFLAGS += -Wall -Wno-unused-function -Wno-long-long
CFLAGS += $(if $(DEBUG), -O0 -g)
如果有数字显示,在CFLAGS中将会出现3-O3和0-g。 但O0和O3不能同时使用。 具体日期之后是否会取代先前的?
感谢和敬爱!
http://linux.die.net/man/1/gcc“rel=“nofollow noreferer”>manpage:
If you use multiple -O options, with or without level numbers, the last such option is the one that is effective.
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