fixed velocity math mistake, updated gravtiy well force to look better

[libbear.git] / vars.mk

# cause the fancy SS_ directory rules to work out
.SECONDEXPANSION:

# The SS rules need to be 'recursive' so they evaluate the @ variables at
# secondary expansion time
SS_DIR     = ${@D}

# Warning this secondary expansion rule is very very sensitive
#  tricks are needed to make things work because the stem % does not match
#  empty also, it is used by the call syntax as the package variable needs to be
#  invoked as usage time while the rest has to be delayed till secondary
#  expansion.
SS_DEPSDIR = $(patsubst %/,%,$(patsubst ${OBJSDIR_$(1)}%,${DEPSDIR_$(1)}%,$(dir $@)))


B_DEBUG    := DEBUG
B_FINAL    := FINAL
B_WIN32    := WIN32
B_CYGWIN   := CYGWIN

# set this on the command line to get a WIN32 or a FINAL build
G_BUILD    := ${B_DEBUG}

ifeq (${G_BUILD},${B_DEBUG})
else
ifeq (${G_BUILD},${B_FINAL})
else
ifeq (${G_BUILD},${B_WIN32})
else
ifeq (${G_BUILD},${B_CYGWIN})
else
    $(error 'G_BUILD = ${G_BUILD}' is invalid. Valid types are '${B_DEBUG}', '${B_FINAL}', '${B_CYGWIN}', or '${B_WIN32}')
endif
endif
endif
endif


T_OPTFLAGS := -O2
T_DBGFLAGS := -ggdb
T_PRFFLAGS := ${T_DBGFLAGS} -pg

T_WARFLAGS :=
T_WARFLAGS += -Wall
T_WARFLAGS += -Wextra
T_WARFLAGS += -pedantic
T_WARFLAGS += -ansi
T_WARFLAGS += -Wshadow
T_WARFLAGS += -Wswitch-enum
T_WARFLAGS += -Wfloat-equal
T_WARFLAGS += -Wundef
T_WARFLAGS += -Wswitch-enum

G_CXXFLAGS := ${T_WARFLAGS}
ifeq (${G_BUILD},${B_DEBUG})
    G_CXXFLAGS    += ${T_DBGFLAGS}
else
ifeq (${G_BUILD},${B_FINAL})
    G_CXXFLAGS    += ${T_OPTFLAGS}
else
ifeq (${G_BUILD},${B_WIN32})
    G_CXXFLAGS    += ${T_OPTFLAGS}
else
ifeq (${G_BUILD},${B_CYGWIN})
    G_CXXFLAGS    += ${T_OPTFLAGS}
else
    $(error 'G_BUILD = ${G_BUILD}' is invalid.)
endif
endif
endif
endif

T_OPTFLAGS :=
T_DBGFLAGS :=
T_PRFFLAGS :=
T_WARFLAGS :=

G_LNKFLAGS :=

ifeq (${G_BUILD},${B_WIN32})
    G_CXX := mingw32-g++
else
    G_CXX := g++
endif

ifeq (${G_BUILD},${B_DEBUG})
    G_LIBGL   := -lGL -lGLU
    G_LIBSDL  := `sdl-config --libs`
else
ifeq (${G_BUILD},${B_FINAL})
    G_LIBGL   := -lGL -lGLU
    G_LIBSDL  := `sdl-config --libs`
else
ifeq (${G_BUILD},${B_WIN32})
    G_LIBGL   := -lopengl32 -lglu32
    G_LIBSDL  := `/usr/mingw32/bin/sdl-config --libs`
else
ifeq (${G_BUILD},${B_CYGWIN})
    G_LIBGL   := -lopengl32 -lglu32
    G_LIBSDL  := `sdl-config --libs`
else
    $(error 'G_BUILD = ${G_BUILD}' is invalid.)
endif
endif
endif
endif

G_SRCSDIR := src

ifeq (${G_BUILD},${B_DEBUG})
    G_OBJSDIR := objsd
    G_BINDIR  := bind
    G_DEPSDIR := depsd
else
ifeq (${G_BUILD},${B_FINAL})
    G_OBJSDIR := objs
    G_BINDIR  := bin
    G_DEPSDIR := deps
else
ifeq (${G_BUILD},${B_WIN32})
    G_OBJSDIR := objs-mingw32
    G_BINDIR  := bin-mingw32
    G_DEPSDIR := deps-mingw32
else
ifeq (${G_BUILD},${B_CYGWIN})
    G_OBJSDIR := objs-cygwin
    G_BINDIR  := bin-cygwin
    G_DEPSDIR := deps-cygwin
else
    $(error 'G_BUILD = ${G_BUILD}' is invalid.)
endif
endif
endif
endif

LOGFILE := bld.log

$(shell rm -f ${LOGFILE}) # remove the log file from last run

ifeq (${G_BUILD},${B_WIN32})
    PRNTFMT := printf "%-12s: %s\n"
    PRNTLOG := printf "\n\#\#  %-12s: %s\n"
else
    PRNTFMT := printf "%-8s: %s\n"
    PRNTLOG := printf "\n\#\#  %-8s: %s\n"
endif

VERBOSE := 0

ifeq (${VERBOSE},0)
    # log the printf command
    Q1s :=
    Q1e := >> ${LOGFILE}
    # quiet the printf command
    Q2s :=
    Q2e :=
		# log the command
    Q3s := echo # NOTE: the space between @echo and the # is VERY important!!
    Q3e := >> ${LOGFILE}
    # quiet the command, log the output
    Q4s := set -o pipefail &&
    Q4e := 2>&1 | tee -a ${LOGFILE}
else
    # EAT the logging printf command
    Q1s := true # NOTE: the space between @true and the # is VERY important!!
    Q1e :=
    # EAT the quiet printf command
    Q2s := true # NOTE: the space between @true and the # is VERY important!!
    Q2e :=
		# EAT the logging command
    Q3s := true # NOTE: the space between @true and the # is VERY important!!
    Q3e :=
    # do not quiet the command
    Q4s :=
    Q4e :=
endif


ifeq (${G_BUILD},${B_WIN32})
    prefix      := /usr/mingw32
else
    prefix      := /usr
endif
exec_prefix := ${prefix}
includedir  := ${prefix}/include
libdir      := ${exec_prefix}/lib
INSTALL     := install