makefrag

# USAGE:
# Set Environment Variables:
# EXTENDED_WARNINGS=1
# for stricter warnings and
#
# WARNINGS_ERROR=1
# for -Werror

CFLAGS += -std=c++17

UNAME_S := $(shell uname -s)

#Currently forcing clang interface on OS X! Otherwise OMNeT++ will use gcc wrapper of clang
ifeq ($(UNAME_S),Darwin)
	CC = clang
	CXX = clang++
	SHLIB_LD = clang++ -shared -fPIC
endif

#Special Flags for OS X
ifeq ($(UNAME_S),Darwin)
    LDFLAGS += -headerpad_max_install_names 
endif

#Warnings generate errors
ifdef WARNINGS_ERROR
	CFLAGS += -Werror
endif


#Stricter warnings in clang and gcc:
ifeq ($(CC),clang)
	#clang
	ifdef EXTENDED_WARNINGS
    CFLAGS += -Wall -Wunused -Wextra -Weverything
    endif
    CFLAGS += -Wno-padded -Wno-global-constructors -Wno-exit-time-destructors
    CFLAGS += -Wno-c++98-compat-pedantic -Wno-unknown-pragmas -Wno-unknown-warning-option
    CFLAGS += -Wno-error=unused-parameter -Wno-error=header-hygiene -Wno-error=documentation -Wno-error=c++98-compat-pedantic
    CFLAGS += -Wno-error=shadow -Wno-error=missing-noreturn -Wno-error=unreachable-code -Wno-error=unreachable-code-return -Wno-error=old-style-cast
    CFLAGS += -Wno-error=conversion -Wno-error=unreachable-code-break -Wno-error=documentation-unknown-command -Wno-error=reserved-id-macro
else ifeq ($(CC),gcc)
	#gcc
	ifdef EXTENDED_WARNINGS
    CFLAGS += -Wall -Wunused -Wextra -Winit-self -Wswitch-enum -Wuninitialized -Wfloat-equal -Wsuggest-attribute=pure
    CFLAGS += -Wsuggest-attribute=const -Wsuggest-attribute=noreturn -Wsuggest-attribute=format -Wconversion -Wuseless-cast
    CFLAGS += -Wshadow
    #CFLAGS += -ansi -pedantic-errors
    endif
    CFLAGS += -Wno-unknown-pragmas -Wno-error=unused-parameter -Wno-error=conversion -Wno-error=suggest-attribute=noreturn
    CFLAGS += -Wno-error=shadow
endif

# add -isystem for referenced projects (-I will be ignored for those also provided with -Isystem)
RELPRJDOTS = $(subst o,,$(subst o ,/,$(patsubst %,..o,$(subst /, ,$(PROJECTRELATIVE_PATH)))))
ifneq (,$(findstring MSYS,$(shell uname -s)))
	# on windows we need this hack for pathes like -Id:/...
	SYSINCLUDES := $(shell echo '$(subst -I$(RELPRJDOTS)/.,-isystem $(RELPRJDOTS)/.,$(INCLUDE_PATH))' |sed -e 's/-I\($(subst \| ,\|,$(addsuffix \|,$(filter %:,$(subst :,: ,$(patsubst -I%,%,$(INCLUDE_PATH))))) \/)\)/-isystem \1/g')
else
    # on unix we can use this	
	SYSINCLUDES := $(subst -I/,-isystem /,$(subst -I$(RELPRJDOTS)/.,-isystem $(RELPRJDOTS)/.,$(INCLUDE_PATH)))
endif

COPTS += $(SYSINCLUDES) -isystem $(OMNETPP_INCL_DIR)