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Compatibility with older versions of GCC

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This commit is contained in:
Eric Biggers 2016-05-25 23:28:14 -05:00
parent 6bcfb00c54
commit d39f4505a1
1 changed files with 13 additions and 4 deletions
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17
Makefile
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@ -35,11 +35,20 @@ endif
############################################################################## ##############################################################################
#### Common compiler flags; not intended to be overridden #### Common compiler flags.
#### Flags given here are not intended to be overridden, but you can add more
#### by defining CFLAGS in the environment or on the 'make' command line.
override CFLAGS += -O2 -fomit-frame-pointer -std=c99 -I. -Icommon \ override CFLAGS := \
-Wall -Wpedantic -Wundef -Wdeclaration-after-statement \ $(CFLAGS) -O2 -fomit-frame-pointer -std=c99 -I. -Icommon \
-Wmissing-prototypes -Wstrict-prototypes -Wall -Wundef \
$(call cc-option,-Wpedantic) \
$(call cc-option,-Wdeclaration-after-statement) \
$(call cc-option,-Wmissing-prototypes) \
$(call cc-option,-Wstrict-prototypes)
cc-option = $(shell if $(CC) $(1) -c -x c /dev/null -o /dev/null \
1>&2 2>/dev/null; then echo $(1); fi)
############################################################################## ##############################################################################