downsampling/ccvars at master · favorov/downsampling · GitHub

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CPP=g++
CC=gcc

gmake_which=$(shell which gmake 2>/dev/null)
ifeq (/gmake,$(findstring /gmake,$(gmake_which)))
 MAKE=gmake
endif

ifndef MAKE
make_info=$(shell make --version)
ifeq (GNU,$(findstring GNU,$(make_info)))
	MAKE=make
else
	$(error No gmake and make is not gmake)
endif
endif

uname_info=$(shell uname -a)
ifeq (Darwin,$(findstring Darwin,$(uname_info)))
	MAC=MAC
endif
ifeq (Cygwin,$(findstring Cygwin,$(uname_info)))
	CYGWIN=CYGWIN
endif

gcc_version_info=$(shell gcc --version)
gcc_4_test=) 4
gcc_3_test=) 3
ifeq ($(gcc_4_test), $(findstring $(gcc_4_test),$(gcc_version_info)))
	GCC4=GCC4
endif
ifeq ($(gcc_3_test), $(findstring $(gcc_3_test),$(gcc_version_info)))
	GCC3=GCC3
endif

ifndef GCC3
ifndef GCC4
$(error GCC major version is neither 3 nor 4, gcc --version says:$(gcc_version_info).)
endif
endif

ifdef GCC3
ifdef GCC4
$(error GCC major version cannot be 3 and 4 at one time)
endif
endif

LINKFLAGS=-lm
DEBUGFLAG=-g
OMITSYMBOLINFOFLAG=-s
OPTIMISEFLAG=-O3
NOOPTIMISEFLAG=-O0
STATICFLAG=-static
PARANOIC_FLAG=-Wextra
MINGW_FLAG=-mno-cygwin
PPRO_FLAG=-mpentiumpro

ifdef GCC4
	INCLUDEKEY=-iquote
	INCLUDECLOSETERM=
else #GCC3
	INCLUDEKEY=-I
	INCLUDECLOSETERM= -I-
endif

ifdef MAC
ifdef GCC4
OMITSYMBOLINFOFLAG=
# -s is obsoleted for mac, gcc4
endif
endif

ifdef CYGWIN
ifdef GCC4
LINKFLAGS=$(LINKGLAGS) -enable-auto-import
endif
endif

ifndef PROFFLAG
 PROFFLAG=-pg
endif

CCFLAGS:=-c -pipe -Wall $(includeflags)
CPPFLAGS:=-c -pipe -ffor-scope -Wall $(includeflags)

ifdef PARANOIC
 CCFLAGS:=$(CCFLAGS) $(PARANOIC_FLAG)
 CPPFLAGS:=$(CPPFLAGS) $(PARANOIC_FLAG)
endif

ifdef MINGW
 CCFLAGS:=$(CCFLAGS) $(MINGW_FLAG)
 CPPFLAGS:=$(CPPFLAGS) $(MINGW_FLAG)
 LINKFLAGS:=$(LINKFLAGS) $(MINGW_FLAG)
endif

ifdef PENTIUMPRO
 CCFLAGS:= $(CCFLAGS) $(PPRO_FLAG)
 CPPFLAGS:= $(CPPFLAGS) $(PPRO_FLAG)
endif

ifdef OPTIMISE
 CCFLAGS:= $(CCFLAGS) $(OPTIMISEFLAG)
 CPPFLAGS:= $(CPPFLAGS) $(OPTIMISEFLAG)
endif

ifdef OPT
 CCFLAGS:= $(CCFLAGS) $(OPTIMISEFLAG)
 CPPFLAGS:= $(CPPFLAGS) $(OPTIMISEFLAG)
endif

ifdef NOOPTIMISE
 CCFLAGS:= $(CCFLAGS) $(NOOPTIMISEFLAG)
 CPPFLAGS:= $(CPPFLAGS) $(NOOPTIMISEFLAG)
endif

ifdef NOOPT
 CCFLAGS:= $(CCFLAGS) $(NOOPTIMISEFLAG)
 CPPFLAGS:= $(CPPFLAGS) $(NOOPTIMISEFLAG)
endif

ifdef PROFILE
 DEBUG=PROFILE #just to switch it on
 CCFLAGS:=$(CCFLAGS) $(PROFFLAG)  $(DEBUGFLAG)
 CPPFLAGS:=$(CPPFLAGS) $(PROFFLAG)  $(DEBUGFLAG)
ifdef GCC4
 LINKFLAGS:=$(LINKFLAGS) $(PROFFLAG) $(DEBUGFLAG)
else #GCC3
 LINKFLAGS:=$(LINKFLAGS:-l%=-l%_p) $(PROFFLAG) $(DEBUGFLAG)
endif
endif


ifdef STATIC
 LINKFLAGS:=$(LINKFLAGS) $(STATICFLAG)
endif

ifdef DEBUG
 CCFLAGS:=$(CCFLAGS) $(DEBUGFLAG) $(NOOPTIMISEFLAG)
 CPPFLAGS:=$(CPPFLAGS) $(DEBUGFLAG) $(NOOPTIMISEFLAG)
else
 LINKFLAGS:=$(LINKFLAGS) $(OMITSYMBOLINFOFLAG)
endif

ifdef CYGWIN
 EXEEXT=.exe
else
 EXEEXT=
endif