#
# ------ GNU/WIN32 CYGWIN ------   !!! not supported !!!
#                             Cygnus CygWin - gcc-9.2 and higher
#                                       Windows 10
#
ifeq ($(G4SYSTEM),WIN32-g++)
  CXX       := g++
  CXXFLAGS  := -Wall -Wno-non-virtual-dtor -Wno-long-long
  CXXFLAGS  += -Wwrite-strings -Wpointer-arith -Woverloaded-virtual
  CXXFLAGS  += -Wno-variadic-macros -Wshadow -pipe
  CXXFLAGS  += -fno-trapping-math -ftree-vectorize -fno-math-errno
  G4USE_STD17 := 1
  CPPFLAGS  += -std=c++17
  CXXFLAGS  += -std=c++17
  ifdef G4OPTIMISE
    CXXFLAGS  += -O3
    FCFLAGS   := -O3
    CCFLAGS   := -O3
  else
    ifdef G4DEBUG
      CXXFLAGS  += -g
      FCFLAGS   := -g
      CCFLAGS   := -g
    endif
  endif
  ifdef G4PROFILE
    CXXFLAGS  += -pg
    FCFLAGS   += -pg
    CCFLAGS   += -pg
  endif
  ifdef G4OPTDEBUG
    CXXFLAGS  += -O2 -g
    FCFLAGS   += -O2 -g
    CCFLAGS   += -O2 -g
  endif
  ifdef G4LIB_BUILD_SHARED
    CXXFLAGS  += -fPIC
    FCFLAGS   += -fPIC
    CCFLAGS   += -fPIC
  endif

  G4RUNPATHOPTION := -Wl,-rpath 
  SHEXT   := so
  ECHO    := echo -e
  GREP := /usr/bin/grep
  SED  := /usr/bin/sed
  CAT  := /usr/bin/cat
  CUT  := /usr/bin/cut

  FC := g77
  FCFLAGS += -fno-automatic -fno-backslash -fno-second-underscore
  FCLIBS := -lg2c -lnsl
  LOADLIBS += -lm -lstdc++
  ifndef X11FLAGS
    X11FLAGS  := -I/usr/include/X11/extensions -I/usr/include/X11
  endif
  ifndef X11LIBS
    X11LIBS   := -L/usr/X11R6/lib  -lXmu -lXt -lXext -lX11 -lSM -lICE
  endif
  ifndef XMFLAGS
    XMFLAGS   := -I/usr/X11R6/include
  endif
  ifndef XMLIBS
    XMLIBS    := -lXm -lXpm
  endif
  ifndef XAWFLAGS
    XAWFLAGS  := -I/usr/X11R6/include
  endif
  ifndef XAWLIBS
    XAWLIBS   := -lXaw
  endif
  ifndef OGLFLAGS
    OGLFLAGS  := -I$(OGLHOME)/include 
  endif
  ifndef OGLLIBS
    OGLLIBS   := -L$(OGLHOME)/lib -lGL
  endif
  define build-granular-shared-lib
    @libdir=`(cd $(@D);/bin/pwd)`; \
     cd $(G4TMPDIR); \
     $(CXX) -Wl,-soname,$(@F) -shared -o $$libdir/$(@F) $(INTYLIBS) *.o
  endef
  define build-global-shared-lib
    @libdir=`(cd $(@D);/bin/pwd)`; \
     cd $(G4TMP)/$(G4SYSTEM); \
     $(CXX) -Wl,-soname,$(@F) -shared -o $$libdir/$(@F) $(INTYLIBS) \
                    $(foreach dir,$(SUBLIBS),$(dir)/*.o);
  endef

endif