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# Copyright (c) 2008 Roy Marples <roy@marples.name>
# Setup some good default CFLAGS
CFLAGS?= -O2
# Default to using the C99 standard
CSTD?= c99
_CSTD_SH= if test -n "${CSTD}"; then echo "-std=${CSTD}"; else echo ""; fi
_CSTD!= ${_CSTD_SH}
CFLAGS+= ${_CSTD}$(shell ${_CSTD_SH})
# Try and use some good cc flags if we're building from svn
# We don't use -pedantic as it will warn about our perfectly valid
# use of %m in our logger.
_CCFLAGS= -Wall -Wextra -Wimplicit -Wshadow -Wformat=2 \
-Wmissing-prototypes -Wmissing-declarations \
-Wmissing-noreturn -Wmissing-format-attribute \
-Wredundant-decls -Wnested-externs \
-Winline -Wwrite-strings -Wcast-align -Wcast-qual \
-Wpointer-arith \
-Wdeclaration-after-statement -Wsequence-point
_CC_FLAGS_SH= if ! test -d .git; then echo ""; else for f in ${_CCFLAGS}; do \
if echo "int main(void) { return 0;} " | \
${CC} $$f -S -xc -o /dev/null - ; \
then printf "%s" "$$f "; fi \
done; fi
_CC_FLAGS!= ${_CC_FLAGS_SH}
CFLAGS+= ${_CC_FLAGS}$(shell ${_CC_FLAGS_SH})
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