#
# This file is part of Jalla <http://github.com/cgo/jalla>.
# Copyright 2012 Christian Gosch.
#
#
# SCons file for simplifying building LAPACKE.
# This file takes the C sources and tries to remove those which are concerned
# with test generation and with XBLAS dependencies.
# You can move them back in if you need them by modifying the "lapacke_sources = filter(...)"
# lines below.
# Those were not a problem for the static library, but for the shared library
# that I wanted for use in GHCi, with the stock LAPACK libraries delivered with
# Ubuntu 11.10, which are /older/ versions than 3.4.0.
#
# Instructions:
#
# 1. You may have to modify the library paths and/or names below to suit your system.
# 2. Copy this SConstruct file to the top level directory of LAPACKE
# 3. Call "scons" on the command line, possibly "scons -jN" where N is the
#    number of processors to use.
# 4. Copy the built libraries where you need them.
#
# This worked for the LAPACKE which was delivered with LAPACK 3.4.0.
#
# Builds a shared and a static library.
# 
# Dependencies: LAPACK, BLAS, CBLAS
#

import re, sys, glob

env = Environment ()
utils_sources   = Glob ('utils/*.c')

# XBLAS dependent functions
x_regex = re.compile ('xx\.c$|sx\.c$|xx_work\.c$|sx_work\.c$') # |^cla_|^sla_')
# Test generation functions
testing_regex = re.compile ('.*lapacke_[sdcz]la')
# Functions apparently not available in stock Ubuntu 11.10 LAPACK, only in LAPACK 3.4.0
other_regex = re.compile ('qrt\.c$|qrt2\.c$|qrt3\.c|rfb\.c$|qrt_work\.c$|qrt2_work\.c$|qrt3_work\.c|rfb_work\.c$')

# Filtering out XBLAS dependencies
lapacke_sources = filter (lambda fn: x_regex.search(fn) == None, glob.glob ('src/*.c'))
# Filtering out testing dependencies
lapacke_sources = filter (lambda fn: testing_regex.search(fn) == None, lapacke_sources)
# Filtering out other (new 3.4.0 functions??) dependencies
lapacke_sources = filter (lambda fn: other_regex.search(fn) == None, lapacke_sources)

env.Append (CCFLAGS = '-DHAVE_LAPACK_CONFIG_H  -DLAPACK_COMPLEX_STRUCTURE')
env.Append (LIBS = ['lapack', 'cblas', 'm'])
env.Append (CPPPATH = ['../include', './include'])
env.Append (LIBPATH = ['/usr/lib/atlas-base/','../lib/'])

env.SharedLibrary ('lapacke', lapacke_sources + utils_sources)
env.StaticLibrary ('lapacke', lapacke_sources + utils_sources)