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Diffstat (limited to 'mk/cc.mk')
| -rw-r--r-- | mk/cc.mk | 27 |
1 files changed, 27 insertions, 0 deletions
diff --git a/mk/cc.mk b/mk/cc.mk new file mode 100644 index 00000000..18eae7ee --- /dev/null +++ b/mk/cc.mk @@ -0,0 +1,27 @@ +# Copyright 2008 Roy Marples <roy@marples.name> + +# Setup some good default CFLAGS + +CFLAGS?= -O2 -pipe +CSTD?= c99 + +# GNU Make way of detecting gcc flags we can use +check_gcc=$(shell if ${CC} $(1) -S -o /dev/null -xc /dev/null >/dev/null 2>&1; \ + then echo "$(1)"; else echo "$(2)"; fi) + +# pmake check for extra cflags +WEXTRA!= for x in -Wdeclaration-after-statement -Wsequence-point -Wextra; do \ + if ${CC} $$x -S -o /dev/null -xc /dev/null >/dev/null 2>&1; \ + then echo -n "$$x "; fi \ + done + +# Loads of nice flags to ensure our code is good +CFLAGS+= -pedantic -std=${CSTD} \ + -Wall -Wunused -Wimplicit -Wshadow -Wformat=2 \ + -Wmissing-declarations -Wno-missing-prototypes -Wwrite-strings \ + -Wbad-function-cast -Wnested-externs -Wcomment -Winline \ + -Wchar-subscripts -Wcast-align -Wno-format-nonliteral \ + $(call check_gcc, -Wdeclaration-after-statement) \ + $(call check_gcc, -Wsequence-point) \ + $(call check_gcc, -Wextra) ${WEXTRA} + |