# vim: ft=make
#
# Makefile.cfg for SRB2
#

#
# GNU compiler & tools' flags
# and other things
#

# See the following variable don't start with 'GCC'. This is
# to avoid a false positive with the version detection...

SUPPORTED_GCC_VERSIONS:=\
	91\
	81 82 83\
	71 72\
	61 62 63 64\
	51 52 53 54\
	40 41 42 43 44 45 46 47 48 49

LATEST_GCC_VERSION=9.1

# gcc or g++
ifdef PREFIX
	CC=$(PREFIX)-gcc
	CXX=$(PREFIX)-g++
	OBJCOPY=$(PREFIX)-objcopy
	OBJDUMP=$(PREFIX)-objdump
	STRIP=$(PREFIX)-strip
	WINDRES=$(PREFIX)-windres
else
	OBJCOPY=objcopy
	OBJDUMP=objdump
	STRIP=strip
	WINDRES=windres
endif

# because Apple screws with us on this
# need to get bintools from homebrew
ifdef MACOSX
	CC=clang
	CXX=clang
	OBJCOPY=gobjcopy
	OBJDUMP=gobjdump
endif

# Automatically set version flag, but not if one was manually set
ifeq   (,$(filter GCC%,$(.VARIABLES)))
 ifneq (,$(findstring GCC,$(shell $(CC) --version))) # if it's GCC
  version:=$(shell $(CC) -dumpversion)

  # Turn version into words of major, minor
  v:=$(subst ., ,$(version))
  # concat. major minor
  v:=$(word 1,$(v))$(word 2,$(v))

  # If this version is not in the list, default to the latest supported
  ifeq (,$(filter $(v),$(SUPPORTED_GCC_VERSIONS)))
   $(info\
		Your compiler version, GCC $(version), is not supported by the Makefile.\
		The Makefile will assume GCC $(LATEST_GCC_VERSION).)
   GCC$(subst .,,$(LATEST_GCC_VERSION))=1
  else
   $(info Detected GCC $(version) (GCC$(v)))
   GCC$(v)=1
  endif
 endif
endif

ifdef GCC91
GCC83=1
endif

ifdef GCC83
GCC82=1
endif

ifdef GCC82
GCC81=1
endif

ifdef GCC81
GCC72=1
endif

ifdef GCC72
GCC71=1
endif

ifdef GCC71
GCC64=1
endif

ifdef GCC64
GCC63=1
endif

ifdef GCC63
GCC62=1
endif

ifdef GCC62
GCC61=1
endif

ifdef GCC61
GCC54=1
endif

ifdef GCC54
GCC53=1
endif

ifdef GCC53
GCC52=1
endif

ifdef GCC52
GCC51=1
endif

ifdef GCC51
GCC49=1
endif

ifdef GCC49
GCC48=1
endif

ifdef GCC48
GCC47=1
endif

ifdef GCC47
GCC46=1
endif

ifdef GCC46
GCC45=1
endif

ifdef GCC45
GCC44=1
endif

ifdef GCC44
GCC43=1
endif

ifdef GCC43
GCC42=1
endif

ifdef GCC42
GCC41=1
endif

ifdef GCC41
GCC40=1
VCHELP=1
endif

ifdef GCC295
GCC29=1
endif

OLDWFLAGS:=$(WFLAGS)
# -W -Wno-unused
WFLAGS=-Wall
ifndef GCC295
#WFLAGS+=-Wno-packed
endif
ifdef ERRORMODE
WARNINGMODE=1
endif
ifdef WARNINGMODE
 WFLAGS+=-W
#WFLAGS+=-Wno-sign-compare
ifndef GCC295
 WFLAGS+=-Wno-div-by-zero
endif
#WFLAGS+=-Wsystem-headers
WFLAGS+=-Wfloat-equal
#WFLAGS+=-Wtraditional
ifdef VCHELP
 WFLAGS+=-Wdeclaration-after-statement
 WFLAGS+=-Wno-error=declaration-after-statement
endif
 WFLAGS+=-Wundef
ifndef GCC295
 WFLAGS+=-Wendif-labels
endif
ifdef GCC41
 WFLAGS+=-Wshadow
endif
#WFLAGS+=-Wlarger-than-%len%
 WFLAGS+=-Wpointer-arith -Wbad-function-cast
ifdef GCC45
#WFLAGS+=-Wc++-compat
endif
 WFLAGS+=-Wcast-qual
ifndef NOCASTALIGNWARN
 WFLAGS+=-Wcast-align
endif
 WFLAGS+=-Wwrite-strings
ifndef ERRORMODE
#WFLAGS+=-Wconversion
ifdef GCC43
 #WFLAGS+=-Wno-sign-conversion
endif
endif
 WFLAGS+=-Wsign-compare
ifdef GCC91
 WFLAGS+=-Wno-error=address-of-packed-member
endif
ifdef GCC45
 WFLAGS+=-Wlogical-op
endif
 WFLAGS+=-Waggregate-return
ifdef HAIKU
ifdef GCC41
 #WFLAGS+=-Wno-attributes
endif
endif
#WFLAGS+=-Wstrict-prototypes
ifdef GCC40
 WFLAGS+=-Wold-style-definition
endif
 WFLAGS+=-Wmissing-prototypes -Wmissing-declarations
ifdef GCC40
 WFLAGS+=-Wmissing-field-initializers
endif
 WFLAGS+=-Wmissing-noreturn
#WFLAGS+=-Wmissing-format-attribute
#WFLAGS+=-Wno-multichar
#WFLAGS+=-Wno-deprecated-declarations
#WFLAGS+=-Wpacked
#WFLAGS+=-Wpadded
#WFLAGS+=-Wredundant-decls
 WFLAGS+=-Wnested-externs
#WFLAGS+=-Wunreachable-code
 WFLAGS+=-Winline
ifdef GCC43
 WFLAGS+=-funit-at-a-time
 WFLAGS+=-Wlogical-op
endif
ifndef GCC295
 WFLAGS+=-Wdisabled-optimization
endif
endif
WFLAGS+=-Wformat-y2k
ifdef GCC71
WFLAGS+=-Wno-error=format-overflow=2
endif
WFLAGS+=-Wformat-security
ifndef GCC29
#WFLAGS+=-Winit-self
endif
ifdef GCC46
WFLAGS+=-Wno-suggest-attribute=noreturn
endif

ifdef NOLDWARNING
LDFLAGS+=-Wl,--as-needed
endif

ifdef ERRORMODE
WFLAGS+=-Werror
endif

WFLAGS+=$(OLDWFLAGS)

ifdef GCC43
 #WFLAGS+=-Wno-error=clobbered
endif
ifdef GCC44
 WFLAGS+=-Wno-error=array-bounds
endif
ifdef GCC46
 WFLAGS+=-Wno-error=suggest-attribute=noreturn
endif
ifdef GCC54
 WFLAGS+=-Wno-logical-op -Wno-error=logical-op
endif
ifdef GCC61
 WFLAGS+=-Wno-tautological-compare -Wno-error=tautological-compare
endif
ifdef GCC71
 WFLAGS+=-Wimplicit-fallthrough=4
endif
ifdef GCC81
 WFLAGS+=-Wno-error=format-overflow
 WFLAGS+=-Wno-error=stringop-truncation
 WFLAGS+=-Wno-error=stringop-overflow
 WFLAGS+=-Wno-format-overflow
 WFLAGS+=-Wno-stringop-truncation
 WFLAGS+=-Wno-stringop-overflow
 WFLAGS+=-Wno-error=multistatement-macros
endif


#indicate platform and what interface use with
ifndef LINUX
ifndef FREEBSD
ifndef CYGWIN32
ifndef MINGW
ifndef MINGW64
ifndef SDL
ifndef DUMMY
	DJGPPDOS=1
endif
endif
endif
endif
endif
endif
endif

#determine the interface directory (where you put all i_*.c)
i_cdmus_o=$(OBJDIR)/i_cdmus.o
i_net_o=$(OBJDIR)/i_net.o
i_system_o=$(OBJDIR)/i_system.o
i_sound_o=$(OBJDIR)/i_sound.o
i_main_o=$(OBJDIR)/i_main.o
#set OBJDIR and BIN's starting place
OBJDIR=../objs
BIN=../bin
#Nasm ASM and rm
ifdef YASM
NASM?=yasm
else
NASM?=nasm
endif
REMOVE?=rm -f
MKDIR?=mkdir -p
GZIP?=gzip
GZIP_OPTS?=-9 -f -n
GZIP_OPT2=$(GZIP_OPTS) --rsyncable
UPX?=upx
UPX_OPTS?=--best --preserve-build-id
ifndef ECHO
UPX_OPTS+=-q
endif

#Interface Setup
ifdef DJGPPDOS
	INTERFACE=djgppdos
	NASMFORMAT=coff
	OBJDIR:=$(OBJDIR)/djgppdos
ifdef WATTCP
	OBJDIR:=$(OBJDIR)/wattcp
endif
	WFLAGS+=-Wno-format
	BIN:=$(BIN)/Dos
else
ifdef DUMMY
	INTERFACE=dummy
	OBJDIR:=$(OBJDIR)/dummy
	BIN:=$(BIN)/dummy
else
ifdef LINUX
	NASMFORMAT=elf -DLINUX
	SDL=1
ifdef LINUX64
	OBJDIR:=$(OBJDIR)/Linux64
	BIN:=$(BIN)/Linux64
else
	OBJDIR:=$(OBJDIR)/Linux
	BIN:=$(BIN)/Linux
endif
else
ifdef FREEBSD
	INTERFACE=sdl
	NASMFORMAT=elf -DLINUX
	SDL=1

	OBJDIR:=$(OBJDIR)/FreeBSD
	BIN:=$(BIN)/FreeBSD
else
ifdef SOLARIS
	INTERFACE=sdl
	NASMFORMAT=elf -DLINUX
	SDL=1

	OBJDIR:=$(OBJDIR)/Solaris
	BIN:=$(BIN)/Solaris
else
ifdef CYGWIN32
	INTERFACE=sdl
	NASMFORMAT=win32
	SDL=1

	OBJDIR:=$(OBJDIR)/cygwin
	BIN:=$(BIN)/Cygwin
else
ifdef MINGW64
	INTERFACE=win32
	#NASMFORMAT=win64
	OBJDIR:=$(OBJDIR)/Mingw64
	BIN:=$(BIN)/Mingw64
else
ifdef MINGW
	INTERFACE=win32
	NASMFORMAT=win32
	OBJDIR:=$(OBJDIR)/Mingw
	BIN:=$(BIN)/Mingw
endif
endif
endif
endif
endif
endif
endif
endif

ifdef ARCHNAME
	OBJDIR:=$(OBJDIR)/$(ARCHNAME)
	BIN:=$(BIN)/$(ARCHNAME)
endif

OBJDUMP_OPTS?=--wide --source --line-numbers
LD=$(CC)

ifdef SDL
	INTERFACE=sdl
	OBJDIR:=$(OBJDIR)/SDL
endif

ifndef DUMMY
ifdef DEBUGMODE
	OBJDIR:=$(OBJDIR)/Debug
	BIN:=$(BIN)/Debug
else
	OBJDIR:=$(OBJDIR)/Release
	BIN:=$(BIN)/Release
endif
endif