#
# Name:    Makehead.bsd-clang
#
# Purpose: This file is used to customize operating system and installation
#          dependent features of the Mp makefiles.  This version is
#          customized for FreeBSD using Clang.
#

# WARNING: On FreeBSD, the Python numpy package is compiled using GCC rather
#          than Clang.  Apparently this can matter in some cases, so you may
#          want to build MX using the 'bsd' target instead if you are planning
#          to use Numpy.  But this may not always be necessary.

#MX_PYTHON = 2.7

ifndef MX_PYTHON
    MX_PYTHON = $(shell python3 -V 2>&1 | cut -f2 -d' ' | cut -c1-3)
endif

$(info Python is [${MX_PYTHON}])

#---

_bsd_version = $(shell uname -s)

$(info _bsd_version is [${_bsd_version}])

ifneq ($(_bsd_version),FreeBSD)
  $(info The 'bsd-clang' build target is currently only available for FreeBSD.)
  $(info For other BSD versions, please try the 'bsd' build target instead.)
  $(error Aborting ...)
endif

# FreeBSD

ifeq ($(_bsd_version),FreeBSD)
  PYTHON_INCLUDES = -I/usr/local/include/python$(MX_PYTHON)
  PYTHON_LINK = $(shell python$(MX_PYTHON)-config --ldflags)
  PYTHON_MAJOR = $(shell echo $(MX_PYTHON) | cut -f1 -d'.')
endif

$(info PYTHON_MAJOR is [${PYTHON_MAJOR}])

#
# The following optional modules import external Python modules that may not
# be available at all sites and for all operating systems.  Comment out any
# that will not build at your site.
#

# MpNum.py - Requires the 'numpy' module.

OPTIONAL_MODULES += MpNum.pyc

#===

_pycache_exists = $(shell ../../mx/scripts/directory_exists __pycache__)

$(info _pycache_exists is [$[_pycache_exists}])

#
#=========================================================================
#
# Generally, you should not have to modify anything after this point.
#

ifeq ($(PYTHON_MAJOR),2)
    ifeq ($(MP_DEBUG),true)
        PYTHON = python-dbg
    else
        PYTHON = python
    endif
else
    ifeq ($(MP_DEBUG),true)
        PYTHON = python$(PYTHON_MAJOR)-dbg
    else
        PYTHON = python$(PYTHON_MAJOR)
    endif
endif

$(info PYTHON is [${PYTHON}])

#===

PYTHON_BIN = $(shell which ${PYTHON})

$(info PYTHON_BIN is [${PYTHON_BIN}])

MP_BUILD_PYC = $(PYTHON) MpBuildPyc.pyx

CFLAGS = -g -O -fPIC $(GCCFLAGS) $(INCLUDES) $(PYTHON_INCLUDES) \
		-DOS_BSD $(EXTRA_FLAGS) -DDEBUG

MAKEDEPEND = clang -MM $(CFLAGS) mp_*.c > Makefile.depend

MAKEDEPEND_CLEAN = rm Makefile.depend

#---------------------------------------------------------------------

LIBMP_OBJS = $(LIBMP_SRCS:.c=.o)

LIBMP_NAME = libMp.so.$(MX_MAJOR_VERSION)

LIBMP_STATIC_NAME = libMp.a

LIBMP_DELETE = rm $(LIBMP_NAME) $(LIBMP_SONAME) libMp.so $(LIBMP_STATIC_NAME)

#---

$(LIBMP_NAME): $(LIBMP_OBJS)
	-$(LIBMP_DELETE)
	clang -shared -o $(LIBMP_NAME) $(LIBMP_OBJS)
	ln -sf $(LIBMP_NAME) libMp.so
	ar rcs $(LIBMP_STATIC_NAME) $(LIBMP_OBJS)
	ranlib $(LIBMP_STATIC_NAME)

#---------------------------------------------------------------------

MP_PYTHON_MODULES = Mp.pyc MpScan.pyc

MP_MODULE_NAME = MpPrivate.so

MP_MODULE_OBJS = $(MP_MODULE_SRCS:.c=.o)

#---------------------------------------------------------------------

MP_MODULE_DELETE = rm $(MP_MODULE_NAME)

$(MP_MODULE_NAME): $(MP_MODULE_OBJS)
	-$(MP_MODULE_DELETE)
	clang -g -shared -o $(MP_MODULE_NAME) \
				$(MP_MODULE_DIRS) $(MP_MODULE_OBJS) \
				$(MP_LIBRARIES) $(LIBMP_NAME) -lc
	#
	echo "#! ${PYTHON_BIN}" > mpscript.temp
	tail -n +2 ../mpscript/mpscript >> mpscript.temp
	#
	echo "#! ${PYTHON_BIN}" > mpenv.temp
	tail -n +2 ../mpscript/mpenv >> mpenv.temp

#---------------------------------------------------------------------

INCLUDES         = -I$(LIBMXSRC)

MP_MODULE_DIRS   = -L$(LIBMXSRC) $(LIB_DIRS)
MP_LIBRARIES     = -lMx $(LIBRARIES)

#---------------------------------------------------------------------

mp_install:
	-mkdir $(MX_INSTALL_DIR)/bin
	-mkdir $(MX_INSTALL_DIR)/lib
	-mkdir $(MX_INSTALL_DIR)/lib/mp
	/usr/bin/install -c -m 644 *.py $(MX_INSTALL_DIR)/lib/mp
	/usr/bin/install -c -m 644 *.so $(MX_INSTALL_DIR)/lib/mp
	/usr/bin/install -c -m 755 ../mpscript/mpshell $(MX_INSTALL_DIR)/bin
	/usr/bin/install -c -m 755 mpscript.temp $(MX_INSTALL_DIR)/bin/mpscript
	/usr/bin/install -c -m 755 mpenv.temp $(MX_INSTALL_DIR)/bin/mpenv
ifeq ($(_pycache_exists),false)
	-/usr/bin/install -c -m 644 *.pyc $(MX_INSTALL_DIR)/lib/mp
else
	-mkdir $(MX_INSTALL_DIR)/lib/mp/__pycache__
	-/usr/bin/install -c -m 644 __pycache__/*.pyc $(MX_INSTALL_DIR)/lib/mp/__pycache__
endif