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################################################################################ Makefile for building a HepMC shared library with the gcc compiler
# Matt.Dobbs@CERN.CH  1.2000
#
# This makefiles also works to compile the example programs.
# I.E.: syntax for compiling the example_MyPythia.cc example:
#       gmake example_MyPythia.exe
# or simply   gmake all     to compile all examples.
#
################################################################################ Define directory paths 
#    You may have to change GENSERdir and/or other variables
#
  HepMCdir             = @prefix@
  HepMClib             = -L$(HepMCdir)/lib -lHepMC
  HepMCfiolib          = -L$(HepMCdir)/lib -lHepMCfio
  GENSERdir            = @GENSERdir@
  CLHEPdir             = @CLHEPdir@
  Pythia_LIB    = -L$(GENSERdir)/lib -Wl,-rpath -Wl,$(GENSERdir)/lib \
                  -lpythia6_403 -lpythia6_403_dumm -lpythia6_403_pdfdumm
  Herwig_LIB    = -L$(GENSERdir)/lib -Wl,-rpath -Wl,$(GENSERdir)/lib \
                  -lherwig6_510 -lherwig6_510_dumm -lherwig6_510_pdfdumm

################################################################################ Compiler options
#
  CXX           = @CXX@
  INCLUDES      = -I$(HepMCdir)/include -I$(CLHEPdir)/include
  CXXFLAGS      =  @AM_CXXFLAGS@ @CXXFLAGS@ $(INCLUDES)
ifeq "$(CXX)" "g++"
   F77           = g77
   FLAGS        = $(DFLG) -fno-second-underscore $(INCDIR)
else
  F77           = f77
  FLAGS         = $(DFLG) $(INCDIR)
endif
  CLHEP_LIB     = -L$(CLHEPdir)/lib -lCLHEP -Wl,-rpath -Wl,$(CLHEPdir)/lib
  initpydata_OBJ= initpydata.o
  pythia_OBJ    = initPythia.o initpydata.o
  LINK_LIBS     = @LDFLAGS@ -Wl,-rpath -Wl,$(HepMCdir)/lib
  SRCS          = example_BuildEventFromScratch.cc      \
                  example_EventSelection.cc     \
                  example_MyHerwig.cc   \
                  example_MyPythia.cc   \
                  example_MyPythiaOnlyToHepMC.cc        \
                  example_UsingIterators.cc     \
                  testPythiaCopies.cc   \
                  testHerwigCopies.cc   \
                  initPythia.cc         \
                  initpydata.f
  HDRS          = $(HepMCdir)/include/HepMC/*.h *.h
  EXAMPLES      = example_BuildEventFromScratch.exe     \
                  example_EventSelection.exe    \
                  example_MyHerwig.exe  \
                  example_MyPythia.exe  \
                  example_MyPythiaOnlyToHepMC.exe       \
                  example_UsingIterators.exe    \
                  testPythiaCopies.exe  \
                  testHerwigCopies.exe

################################################################################ 

PLATFORM=$(shell uname)

ifeq "$(PLATFORM)" "Linux"
    LINK_LIBS     += -lg2c 
endif

################################################################################ definition of the compiler options
#       -I location of directory containing include files
#       -L location of directory containing libraries
#       -lname include the library from -L location called libname.a
#          -lg2c is the library containing info on converting fortran to C
#          -lf   is the library containing the intrinsic for HPUX only.
#       -shared make a shared library as output
#       -fPIC produce position independent code
#        necessary on some platforms (including HPUX) for -shared
#       -fpic ^^ same(?)
#       -O optimizes
#       -g produces output for the debugger
#       -pg produces output for gprof profiler
#       note: if you want to see all warnings and ensure ansi standard 
#             compatibility, use:
#             -pipe -ansi -pedantic -fnonnull-objects \
#             -W -Wall -Wwrite-strings -Wpointer-arith -Wnested-externs \
#             -Woverloaded-virtual -Wbad-function-cast -fnonnull-objects
#       The proper order for cernlib libraries is:
#       -lpawlib -lgraflib -lgrafX11 -lmathlib -lkernlib -lpacklib -ljetset74
#
# makefile syntax:
#        for target thedir/target.suf from source anotherdir/source.suf2
#        ${*D}  = thedir
#        ${*F}  = target
#        $*     = thedir/target
#        $@     = thedir/target.suf
#        $<     = anotherdir/source.suf2
#  

###############################################################################
#
.SUFFIXES:      .o .cxx .f .exe
all:    $(EXAMPLES)

example_BuildEventFromScratch.exe: example_BuildEventFromScratch.o
        @echo "Building $@ ..."
        $(CXX) $(FLAGS) example_BuildEventFromScratch.o \
                $(HepMClib) \
                $(CLHEP_LIB) \
                $(LINK_LIBS) -o $@

example_EventSelection.exe: example_EventSelection.o
        @echo "Building $@ ..."
        $(CXX) $(FLAGS) example_EventSelection.o \
                $(HepMClib) \
                $(LINK_LIBS) -o $@

example_MyHerwig.exe: example_MyHerwig.o
        @echo "Building $@ ..."
        $(CXX) $(FLAGS) example_MyHerwig.o \
                $(HepMClib) $(HepMCfiolib) \
                $(Herwig_LIB) $(LINK_LIBS) -o $@

example_MyPythia.exe: $(initpydata_OBJ) $(pythia_OBJ) example_MyPythia.o
        @echo "Building $@ ..."
        $(CXX) $(FLAGS) $(pythia_OBJ) example_MyPythia.o \
                $(HepMClib) $(HepMCfiolib) \
                $(Pythia_LIB) $(LINK_LIBS) -o $@

example_MyPythiaOnlyToHepMC.exe: $(initpydata_OBJ) $(pythia_OBJ) example_MyPythiaOnlyToHepMC.o
        @echo "Building $@ ..."
        $(CXX) $(FLAGS) $(pythia_OBJ) example_MyPythiaOnlyToHepMC.o \
                $(HepMClib) $(HepMCfiolib) \
                $(Pythia_LIB) $(LINK_LIBS) -o $@

example_UsingIterators.exe: example_UsingIterators.o
        @echo "Building $@ ..."
        $(CXX) $(FLAGS) example_UsingIterators.o \
                $(HepMClib) \
                $(LINK_LIBS) -o $@

testPythiaCopies.exe: $(initpydata_OBJ) $(pythia_OBJ) testPythiaCopies.o
        @echo "Building $@ ..."
        $(CXX) $(FLAGS) $(pythia_OBJ) testPythiaCopies.o \
                $(HepMClib) $(HepMCfiolib) \
                $(Pythia_LIB) $(LINK_LIBS) -o $@

testHerwigCopies.exe: testHerwigCopies.o
        @echo "Building $@ ..."
        $(CXX) $(FLAGS) testHerwigCopies.o \
                $(HepMClib) $(HepMCfiolib) \
                $(Herwig_LIB) $(LINK_LIBS) -o $@

###############################################################################
# instructions for building a .o file from a .cxx file
#
.cc.o:         $(HDRS) $<
        @echo "Compiling $< with $(CXX) ..."
        @$(CXX) $(CXXFLAGS) -c $< -o $@

###############################################################################
# instructions for building a .o file from a .f file
#
.f.o:           $<
        @echo "Compiling $< with $(F77) ..."
        @$(F77) $(FLAGS) -c $< -o $@

###############################################################################
# gmake clean       removes all garbage from HepMC directories.
#
clean:
        rm -f *.o

###############################################################################
# gmake distclean       removes all compiled libraries, executables, +garbage
#                       to prepare the package for distribution
distclean: 
        $(MAKE) clean --no-print-directory
        rm -f *.exe
        rm -f *.dat