roy.marples.name Git - dhcpcd-ui/blob - mk/cc.mk

   1 # Copyright 2008 Roy Marples <roy@marples.name>
   2
   3 # Setup some good default CFLAGS
   4 CFLAGS?=        -O2
   5
   6 # Try and use some good cc flags if we're building from svn
   7 # We don't use -pedantic as it will warn about our perfectly valid
   8 # use of %m in our logger.
   9 _CCFLAGS=       -Wall -Wextra -Wimplicit -Wshadow -Wformat=2 \
  10                 -Wmissing-prototypes -Wmissing-declarations \
  11                 -Wmissing-noreturn -Wmissing-format-attribute \
  12                 -Wredundant-decls  -Wnested-externs \
  13                 -Winline -Wwrite-strings -Wcast-align -Wcast-qual \
  14                 -Wpointer-arith \
  15                 -Wdeclaration-after-statement -Wsequence-point
  16 _CC_FLAGS_SH=   if ! test -d .svn; then echo ""; else for f in ${_CCFLAGS}; do \
  17                 if echo "int main(void) { return 0;} " | \
  18                 ${CC} $$f -S -xc -o /dev/null - ; \
  19                 then printf "%s" "$$f "; fi \
  20                 done; fi
  21 _CC_FLAGS!=     ${_CC_FLAGS_SH}
  22 CFLAGS+=        ${_CC_FLAGS}$(shell ${_CC_FLAGS_SH})