Makefile.common

#
# Makefile - fpgatools
# Author: Wolfgang Spraul
#
# This is free and unencumbered software released into the public domain.
# For details see the UNLICENSE file at the root of the source tree.
#

PREFIX ?= /usr/local

SHELL = bash

# -fno-omit-frame-pointer and -ggdb add almost nothing to execution
# time right now, so we can leave them in all the time.
CFLAGS_DBG = -fno-omit-frame-pointer -ggdb
CFLAGS += $(CFLAGS_DBG)

CFLAGS += -Wall -Wshadow -Wmissing-prototypes -Wmissing-declarations \
	-Wno-format-zero-length -O2

# ----- Verbosity control -----------------------------------------------------

CPP := $(CPP)   # make sure changing CC won't affect CPP

CC_normal	:= $(CC)
AR_normal	:= $(AR) rsc
DEPEND_normal	:= $(CPP) $(CFLAGS) -D__OPTIMIZE__ -MM -MG
RANLIB_normal	:= ranlib

CC_quiet	= @echo "  CC       " $@ && $(CC_normal)
AR_quiet	= @echo "  AR       " $@ && $(AR_normal)
DEPEND_quiet	= @$(DEPEND_normal)
RANLIB_quiet	= @$(RANLIB_normal)

ifeq ($(V),1)
    CC		= $(CC_normal)
    AR		= $(AR_normal)
    DEPEND	= $(DEPEND_normal)
    RANLIB	= $(RANLIB_normal)
else
    CC		= $(CC_quiet)
    AR		= $(AR_quiet)
    DEPEND	= $(DEPEND_quiet)
    RANLIB	= $(RANLIB_quiet)
endif
# because all sub Makefiles also include this file, no need to pass down
# these variables. or we risk producing "@echo ... && @echo ... && cc .."
# which is not correct.
unexport CC AR DEPEND RANLIB

# ----- Dependencies ----------------------------------------------------------

MKDEP =									\
	$(DEPEND) $< |							\
	  sed 								\
	    -e 's|^$(basename $(notdir $<)).o:|$@:|'			\
	    -e '/^\(.*:\)\? */{p;s///;s/ *\\\?$$/ /;s/  */:\n/g;H;}'	\
	    -e '$${g;p;}'						\
	    -e d >$(basename $@).d;					\
	  [ "$${PIPESTATUS[*]}" = "0 0" ] ||				\
	  { rm -f $(basename $@).d; exit 1; }

-include $(OBJS:.o=.d)