#!/usr/bin/env python

from itertools import combinations

def powerset(items):
    result = []
    for i in xrange(len(items) + 1):
        result += combinations(items, i)
    return result

MAKE_J_VAL = 32

possible_compilers = [('gcc', 'g++'), ('clang', 'clang++')]
possible_compiler_opts = [
    '-m32',
]
possible_config_opts = [
    '--enable-debug',
    '--enable-prof',
    '--disable-stats',
    '--with-malloc-conf=tcache:false',
]
possible_malloc_conf_opts = [
    'tcache:false',
    'dss:primary',
    'percpu_arena:percpu',
]

print 'set -e'
print 'autoconf'
print 'unamestr=`uname`'

for cc, cxx in possible_compilers:
    for compiler_opts in powerset(possible_compiler_opts):
        for config_opts in powerset(possible_config_opts):
            for malloc_conf_opts in powerset(possible_malloc_conf_opts):
                if cc is 'clang' \
                  and '-m32' in possible_compiler_opts \
                  and '--enable-prof' in config_opts:
                    continue
                config_line = (
                    'EXTRA_CFLAGS=-Werror EXTRA_CXXFLAGS=-Werror ./configure '
                    + 'CC="{} {}" '.format(cc, " ".join(compiler_opts))
                    + 'CXX="{} {}" '.format(cxx, " ".join(compiler_opts))
                    + " ".join(config_opts) + (' --with-malloc-conf=' +
                    ",".join(malloc_conf_opts) if len(malloc_conf_opts) > 0
                    else '')
                )

                # Per CPU arenas are only supported on Linux.
                linux_supported = ('percpu_arena:percpu' in malloc_conf_opts)
                # Heap profiling and dss are not supported on OS X.
                darwin_unsupported = ('--enable-prof' in config_opts or \
                  'dss:primary' in malloc_conf_opts)
                if linux_supported:
                    print 'if [[ "$unamestr" = "Linux" ]]; then'
                elif darwin_unsupported:
                    print 'if [[ "$unamestr" != "Darwin" ]]; then'

                print config_line
                print "make clean"
                print "make -j" + str(MAKE_J_VAL) + " check"

                if linux_supported or darwin_unsupported:
                    print 'fi'