# Makefile for exercises
# requires gmake, tested with version  3.76.1
# NB do not try to use non-GNU make

# Linux:   tested on RH 5.0 with egcs-1.1.1
# Digital: tested on DU4.0D with CXX 6.1-027
# HP:      tested on HP-UX 10.20 with aCC 1.21

# make `all' the default target; define it later.
all::

# enter name of main (c++) source file here:
SRC = test_random.cc

# enter name of additional source files (c++ or fortran) here:
CSRCS = random.cc
FSRSC = 
#FSRCS = dummy2.f

# Initialise compiler and preprocessor flags with OS-independent flags
CPPFLAGS = 
CXXFLAGS = -g
FFLAGS   = -g
F77LIBS  =
# link must be with c++ compiler if there is any c++ code
LD       = $(CXX)

# CERN stuff
# cern level is set explicitly here to avoid problems of
# pro pointing to different versions on different machines
CERNLVL = 99

CERN_ROOT = /cern/$(CERNLVL)
CERNLIBS := $(shell CERN_LEVEL=$(CERNLVL) cernlib packlib genlib kernlib)
CERNINCS := $(CERN_ROOT)/include

CPPFLAGS += -I$(CERNINCS)

# OS-specific compiler and preprocessor flags
OS := $(shell uname -s)

ifeq "$(OS)" "Linux"
CXX = g++
FC  = g77
CPPFLAGS += -Dextname -Df2cFortran
CXXFLAGS += -D_GNU_SOURCE -pipe -ansi -pedantic
F77LIBS  += -L/usr/local/lib -lf2c -lm -ldl

else
ifeq "$(OS)" "OSF1"
CXX = cxx
FC  = f77
CPPFLAGS += -Dextname
CXXFLAGS += -no_implicit_include -D__USE_STD_IOSTREAM -std ansi
F77LIBS  += -lUfor -lfor -lFutil -lots -lm

else
ifeq "$(OS)" "HP-UX"
CXX = aCC
FC  = f77
FFLAGS   += +ppu +T
CPPFLAGS += -Dextname
CXXFLAGS += -z +p
F77LIBS  += -lm -lf -lisamstub -lcl -lm

else
# system unknown
OS_UNKNOWN = true
endif
endif
endif

# derive object and exe file names
OBJ  = $(SRC:.cc=.o)
OBJS = $(CSRCS:.cc=.o) $(FSRCS:.f=.o)
EXE = $(OBJ:.o=)

# Check that the OS is known
oscheck:
ifdef OS_UNKNOWN
	@echo "No settings available for OS=$(OS)"
	exit 1
else
	@echo "Using settings for $(OS)"
#	@echo "FC=$(FC) CXX=$(CXX) LD=$(LD)"
endif

# some debug info for the author of this makefile
test:
	@echo "SRC=$(SRC) CSRCS=$(CSRCS) FSRCS=$(FSRCS) OBJ=$(OBJ) OBJS=$(OBJS) EXE=$(EXE)"

# very basic dependencies
$(EXE): $(OBJ) $(OBJS)
	$(LD) -o $@ $(CXXFLAGS) $(LDFLAGS) $+ $(CERNLIBS) $(F77LIBS)

# define all
all:: oscheck $(EXE)

clean:	
	-rm -f $(EXE) $(OBJ) $(OBJS)

VPATH = ./:../