fixed redolent clean rule

[libbear.git] / Makefile

# set this on the command line to get a WIN32 or a FINAL build
BUILD    := DEBUG


SRCSDIR := src/
DEPSDIR := deps/
INCDIRS := ${SRCSDIR} inc/

ifeq (${BUILD},WIN32)
    OBJSDIR := objs-mingw32/
else
ifeq (${BUILD},FINAL)
    OBJSDIR := objs/
else
    OBJSDIR := objsd/
endif
endif

ifeq (${BUILD},WIN32)
    WORKINGDIR  := bin-mingw32/
else
ifeq (${BUILD},FINAL)
    WORKINGDIR  := bin/
else
    WORKINGDIR  := bind/
endif
endif


ifeq (${BUILD},WIN32)
    LIBGL   := -lopengl32 -lglu32
    LIBSDL  := `/usr/mingw32/bin/sdl-config --libs`
else
    LIBGL   := -lGL -lGLU
    LIBSDL  := `sdl-config --libs`
endif
LIBS        := ${LIBSDL} ${LIBGL}


ifeq (${BUILD},WIN32)
    LINKERNAME  := pg.dll
    SONAME      := pg.dll
    REALNAME    := pg.dll
else
    LINKERNAME  := libpg.so
    SONAME      := libpg.so.0
    REALNAME    := libpg.so.0.0
endif

TARGETTMP   := ${OBJSDIR}${REALNAME}
TARGET      := ${WORKINGDIR}${REALNAME}


OPTFLAGS := -O2
DBGFLAGS := -ggdb
PRFFLAGS := ${DBGFLAGS} -pg
LIBFLAGS := -fPIC
MYFLAGS  := -Wall -pedantic -ansi
INCFLAGS := $(addprefix -I, ${INCDIRS})
LNKFLAGS := -shared -Wl,-soname,${SONAME}

CXXFLAGS := ${MYFLAGS} ${LIBFLAGS}
ifeq (${BUILD},WIN32)
    CXXFLAGS    += ${OPTFLAGS}
else
ifeq (${BUILD},FINAL)
    CXXFLAGS    += ${OPTFLAGS}
else
    CXXFLAGS    += ${DBGFLAGS}
endif
endif

ifeq (${BUILD},WIN32)
    CXX := mingw32-g++
else
    CXX := g++
endif



ifeq (${BUILD},WIN32)
    prefix      := /usr/mingw32
else
    prefix      := /usr
endif
exec_prefix := ${prefix}
includedir  := ${prefix}/include
libdir      := ${exec_prefix}/lib

ifeq (${BUILD},WIN32)
    PRNTFMT := printf "%-12s: %s\n"
else
    PRNTFMT := printf "%-8s: %s\n"
endif

VERBOSE := 0

ifeq (${VERBOSE},0)
    # quiet the printf command
    Q1 := @
    # quiet the command that is `replaced' by an echo
    Q2 := @
else
    # EAT the printf command as if it was not there
    Q1 := @true # NOTE: the space between @true and the # is VERY important!!
    # do not quiet the command output
    Q2 :=
endif


# include all of the dir.mk
DIRS    := # := start
SRCS    := # := start
OBJS    := # := start
DEPS    := # := start
DIRMK   := dir.mk
include ${SRCSDIR}${DIRMK}


DEPSBLDDIRS := ${DEPSDIR} $(addprefix ${DEPSDIR},${DIRS})
OBJSBLDDIRS := ${OBJSDIR} $(addprefix ${OBJSDIR},${DIRS})

BLDDIRS     := # := start
BLDDIRS     += ${OBJSBLDDIRS}
BLDDIRS     += ${DEPSBLDDIRS}
BLDDIRS     += ${WORKINGDIR}


.PHONY: all
all: ${TARGET}

INSTALL := install

# HACK install
install:
	${INSTALL} -d ${includedir}/pg
	${INSTALL} -t ${includedir}/pg inc/*
	ln -sfn ${REALNAME} ${libdir}/${LINKERNAME}
	ln -sfn ${REALNAME} ${libdir}/${SONAME}
	${INSTALL} -t ${libdir} ${WORKINGDIR}${REALNAME}

# HACK uninstall
uninstall:
	rm -rf /usr/include/pg
	rm /usr/lib/${REALNAME}
	rm /usr/lib/${LINKERNAME}
	rm /usr/lib/${SONAME}

# cause the fancy $${@D} directory rules to work out
.SECONDEXPANSION:

# how to link the main target
${TARGETTMP}: ${OBJS} | $${@D}
	${Q1}${PRNTFMT} "${CXX}" "$@"
	${Q2}${CXX} ${CXXFLAGS} ${LNKFLAGS} -o $@ $^ ${LIBS}

# rule to copy tmp target to working directory
${TARGET}: ${TARGETTMP} | $${@D}
	${Q1}${PRNTFMT} "cp" "$@"
	${Q2}cp $< $@

# how to make a directory
${BLDDIRS}:
	${Q1}${PRNTFMT} "mkdir" "$@"
	${Q2}mkdir -p $@

# rule to make an object file from a .cpp
${OBJSDIR}%.o: ${SRCSDIR}%.cpp | $${@D}
	${Q1}${PRNTFMT} "${CXX}" "$@"
	${Q2}${CXX} ${CXXFLAGS} -c -o $@ $< ${INCFLAGS}

# rule to make a depend file from a .cpp
#   be clever and escape the / chars in file paths
#   DON'T simply use another sed delimiter or it can't appear in the file paths
${DEPSDIR}%.d: ${SRCSDIR}%.cpp | $${@D}
	${Q1}${PRNTFMT} "DEP" "$@"
	${Q2}${CXX} -MM ${CXXFLAGS} $< ${INCFLAGS} | \
		sed 's/\(^.*\):/$(subst /,\/,${OBJSDIR}\1 $@):/' > $@

CLEANCMDS := cleanbin cleanobjs cleandeps clean cleanall

.PHONY: cleanbin
cleanbin:
	${Q1}${PRNTFMT} "rm" "${WORKINGDIR}"
	${Q2}rm -rf ${WORKINGDIR}

.PHONY: cleanobjs
cleanobjs:
	${Q1}${PRNTFMT} "rm" "${OBJSDIR}"
	${Q2}rm -rf ${OBJSDIR}

.PHONY: cleandeps
cleandeps:
	${Q1}${PRNTFMT} "rm" "${DEPSDIR}"
	${Q2}rm -rf ${DEPSDIR}

.PHONY: clean
clean: cleanobjs
	${Q1}${PRNTFMT} "rm" "${TARGET}"
	${Q2}rm -f ${TARGET}

.PHONY: cleanall
cleanall: cleanbin cleanobjs cleandeps

# Do not include deps files when doing a _single_ clean operation
ifeq ($(findstring ${MAKECMDGOALS},${CLEANCMDS}),)
    -include ${DEPS}
endif