# -*- Makefile -*-
#
# $Id$
#
# common makefile rules shared by all GNUmakefile.*
# 
# Running tests:
# --------------
# $ make [run | runall | run_all] [target] [target]... ; 
#   runs the tests specified on the command line   
# OR
# $ make [run | runall | run_all] ; 
#       runs all the tests producing a complete report
# 
# 
##############################################################################

clean: cleantarget
	rm -rf a.out core *.o *.i *.ii *.ti *.sh *.sta *.out  \
        *$(LIBSUFFIX) $(CATFILE)                              \
        tempinc cxx_repository SunWS_cache 2>/dev/null

cleantarget:
	rm -f $(TARGET)

listtarget:
	@echo $(TARGET)

listsrc:
	@echo $(SRCS)

listobj:
	@echo $(OBJS)

listfiles:
	@echo $(SRCDIRS)
	@echo $(ALL_FILES)

listvpath:
	@echo $(VPATH)

listruntarget:
	@echo $(RUNTARGET)


# create a catalog from text message files - see gencat(1)
$(CATFILE): $(MSGFILES)
	gencat $@ $^


##############################################################################
#  COMMON RULES
##############################################################################

ifeq ($(NO_DOT_O),)

# compile and link in two separate steps

  ifneq ($(AS_EXT),)
    ifneq ($(AS_EXT),".")

%.o: %$(AS_EXT)
	$(CXX) -c $(CPPFLAGS) $(CXXFLAGS) $<

    endif   # ifneq ($(AS_EXT),".")
  endif   # ifneq ($(AS_EXT),)

%.o: %.cpp
	$(CXX) -c $(CPPFLAGS) $(CXXFLAGS) $(call CXX.repo,$<) $<

%: %.o
	$(LD) $< -o $@ $(LDFLAGS) $(LDLIBS) $(call CXX.repo,$<)

# disable compilation and linking in the same step
# %: %.cpp

else

# compile and link in one step to eliminate the space overhead of .o files
%: %.cpp
	$(CXX) $< -o $@ $(CPPFLAGS) $(CXXFLAGS) $(LDFLAGS) $(LDLIBS) \
               $(call CXX.repo,$<)

endif   # eq ($(NO_DOT_O),)


# produce a .out file by running the executable
%.out: %
	LD_LIBRARY_PATH=$$LD_LIBRARY_PATH:$(LIBDIR) ./$< >$@ 2>&1

# create a script that when run first builds the executable and then runs it
# done to save even more space than `NO_DOT_O' on constrained systems
%.sh: %.cpp
	@(echo "generating $@..." ;                                         \
        echo "#!$(SHELL)" > $@ ;                                            \
        a_dot_out="$(PWD)/$(basename $@)."'$$''$$' ;                        \
        tmp="$(CXX) $< -o $$a_dot_out $(CPPFLAGS) $(CXXFLAGS) "             \
                    "$(LDFLAGS) $(LDLIBS)" ;                                \
        tmp="$$tmp && $$a_dot_out "'$$''*'" && rm $$a_dot_out" ;            \
        echo >> $@ ; echo "$$tmp" >> $@ ;                                   \
        chmod +x $@)

# run all tests, collect exit status and report statistics; the variable
# RUN can be set to contain a list of executables to run without generating
# a report (set to ALL to run all executables)
# hung or runaway processes are killed after a customizable timeout period
#
# PlumHall specific:
# for all "top level" tests that failed to build, find and build all
# subtests (the little tests the main test consists of)
run runall run_all: $(BINDIR)/exec
	@(LD_LIBRARY_PATH=$$LD_LIBRARY_PATH:$(LIBDIR);                    \
        PATH=$$PATH:.;                                                    \
        TOPDIR=$(TOPDIR);                                                 \
        export LD_LIBRARY_PATH PATH TOPDIR;                               \
        ./run $(RUNFLAGS) $(RUNTARGET);                                   \
        exit 0)

# include the automatically generated dependencies unless "clean"
# or similar is one of the targets
ifeq ($(findstring clean,$(MAKECMDGOALS)),)

  ifeq ($(MAKECMDGOALS),)
    # include all dependencies (can be slow when there are a lot of them)
    DEPS += $(patsubst %.cpp,$(DEPENDDIR)/%.d,$(filter %.cpp,$(SRCS)))
    DEPS += $(patsubst %$(AS_EXT),$(DEPENDDIR)/%.d,$(filter %$(AS_EXT),$(SRCS)))
  else
    # as a (potentially significant) optimization, include
    # only the dependencies for the explicitly specified goals
    DEPS += $(addprefix $(DEPENDDIR)/,$(basename $(MAKECMDGOALS)))
    DEPS += $(addsuffix .d,$(DEPS))
  endif

  # (try to) include the dependency file(s), failing gracefully
  # if they don't exist (e.g., in the case of a .PHONY goal)
  -include $(DEPS)

endif   # eq ($(findstring clean,$(MAKECMDGOALS)),)


ifneq ($(DEPENDFLAGS),)

# generate dependencies only if they don't yet exist, removing anything
# not under $(TOPDIR) or $(BUILDDIR) (e.g., system headers) from the list
# this is done by splitting up dependencies using tr so that there is just
# one per line and then replacing the values of $(TOPDIR) and $(BUILDDIR)
# with the actual make variable names themselves
# move IBM xlC generated .u files to the respective .d files

define makedep
    -@(if [ ! -f $@ ] ; then                                                 \
           echo "generating dependencies for"                                \
                `echo $< | sed "s:$(TOPDIR):$$""(TOPDIR):"` ;                \
                                                                             \
           stripexp="s:/$$::;s:[^/]*$$::";                                   \
           RWTSRCDIR=`echo $(TOPDIR) | sed "$$stripexp"`rwtest;              \
                                                                             \
           sedexp1="s:\([^ :]\)\(  */\):\1 \\\@\2:" ;                        \
           sedexp2="/:[^/]*$$/p;                                             \
                   s:$$RWTSRCDIR:$$""(TOPDIR)/\.\./rwtest:gp;                \
                   s:$(TOPDIR):$$""(TOPDIR):gp;                              \
                   s:$(BUILDDIR):$$""(BUILDDIR):gp" ;                        \
                                                                             \
           $(CXX) $(DEPENDFLAGS) $(CPPFLAGS) $(CXXFLAGS) $<                  \
               | sed "$$sedexp1" | tr "@" "\n" | sed -n "$$sedexp2" >$@ ;    \
           if [ ! -s $@ ]; then                                              \
               depfile=$*.u;                                                 \
               [ ! -s $$depfile ] && depfile=`basename $*.d`;                \
               if [ -s $$depfile ] ; then                                    \
                  sed "$$sedexp1" $$depfile | tr "@" "\n"                    \
                                            | sed -n "$$sedexp2" > $@ ;      \
               fi;                                                           \
               rm -f $$depfile ;                                             \
           fi ;                                                              \
           rm -f $*.i ;                                                      \
      fi)
endef

$(DEPENDDIR):
	@[ ! -d $(DEPENDDIR) ] && mkdir -p $(DEPENDDIR)

# rule to make dependencies for C++ source files
$(DEPENDDIR)/%.d: %.cpp $(DEPENDDIR)
	$(makedep)

# rule to make dependencies for assembly files
$(DEPENDDIR)/%.d: %$(AS_EXT) $(DEPENDDIR)
	$(makedep)


else   # ifeq ($(DEPENDFLAGS),)

$(DEPENDDIR)/%.d:

endif   # neq ($(DEPENDFLAGS),)


# disable implicit rules from trying to compile .c and .cc files
# under the include/ directory (e.g., istream.c to istream) due
# to being listed as dependencies of .cpp files
%: %.c

%.o: %.c

%: %.cc

%.o: %.cc

%: %.h

# force the regeneration of all dependencies by removing them
dependclean:
	rm -f $(DEPENDDIR)/*.d; 
	@echo "dependencies will be regenerated at the next invocation of make"

# print ordinary make variables and their values (requires GNU make 3.80)
printvars:
	@$(foreach V,$(sort $(.VARIABLES)), \
	    $(if $(filter-out environment% default automatic, $(origin $V)), \
	         $(warning $V=$($V) ($(value $V)))))


# define a set of phony targets that make should make unconditionally
# regardless of whether files with the same name exist and their
# timestamps
.PHONY: all c_headers clean dependclean realclean config configure listtarget \
       listruntarget listsrc listobj listvpath listsubtests printvars \
       run run_all runall

# override the default set of suffixes with our own
.SUFFIXES: .a .c .cc .cpp .d .h .o .$(AS_EXT)