#!/usr/bin/env python
# encoding: utf-8
# Thomas Nagy, 2006 (ita)
"ocaml support"
import os, re
import TaskGen, Utils, Task, Build
from Logs import error
from TaskGen import taskgen,feature,before,after,extension
EXT_MLL = ['.mll']
EXT_MLY = ['.mly']
EXT_MLI = ['.mli']
EXT_MLC = ['.c']
EXT_ML = ['.ml']
open_re = re.compile('^\s*open\s+([a-zA-Z]+)(;;){0,1}$', re.M)
foo = re.compile(r"""(\(\*)|(\*\))|("(\\.|[^"\\])*"|'(\\.|[^'\\])*'|.[^()*"'\\]*)""", re.M)
def filter_comments(txt):
meh = [0]
def repl(m):
if m.group(1): meh[0] += 1
elif m.group(2): meh[0] -= 1
elif not meh[0]: return m.group(0)
return ''
return foo.sub(repl, txt)
def scan(self):
node = self.inputs[0]
code = filter_comments(node.read(self.env))
global open_re
names = []
import_iterator = open_re.finditer(code)
if import_iterator:
for import_match in import_iterator:
names.append(import_match.group(1))
found_lst = []
raw_lst = []
for name in names:
nd = None
for x in self.incpaths:
nd = x.find_resource(name.lower()+'.ml')
if not nd: nd = x.find_resource(name+'.ml')
if nd:
found_lst.append(nd)
break
else:
raw_lst.append(name)
return (found_lst, raw_lst)
native_lst=['native', 'all', 'c_object']
bytecode_lst=['bytecode', 'all']
class ocaml_taskgen(TaskGen.task_gen):
def __init__(self, *k, **kw):
TaskGen.task_gen.__init__(self, *k, **kw)
@feature('ocaml')
def init_ml(self):
Utils.def_attrs(self,
type = 'all',
incpaths_lst = [],
bld_incpaths_lst = [],
mlltasks = [],
mlytasks = [],
mlitasks = [],
native_tasks = [],
bytecode_tasks = [],
linktasks = [],
bytecode_env = None,
native_env = None,
compiled_tasks = [],
includes = '',
uselib = '',
are_deps_set = 0)
@feature('ocaml')
@after('init_ml')
def init_envs_ml(self):
self.islibrary = getattr(self, 'islibrary', False)
global native_lst, bytecode_lst
self.native_env = None
if self.type in native_lst:
self.native_env = self.env.copy()
if self.islibrary: self.native_env['OCALINKFLAGS'] = '-a'
self.bytecode_env = None
if self.type in bytecode_lst:
self.bytecode_env = self.env.copy()
if self.islibrary: self.bytecode_env['OCALINKFLAGS'] = '-a'
if self.type == 'c_object':
self.native_env.append_unique('OCALINKFLAGS_OPT', '-output-obj')
@feature('ocaml')
@before('apply_vars_ml')
@after('init_envs_ml')
def apply_incpaths_ml(self):
inc_lst = self.includes.split()
lst = self.incpaths_lst
for dir in inc_lst:
node = self.path.find_dir(dir)
if not node:
error("node not found: " + str(dir))
continue
self.bld.rescan(node)
if not node in lst: lst.append(node)
self.bld_incpaths_lst.append(node)
# now the nodes are added to self.incpaths_lst
@feature('ocaml')
@before('apply_core')
def apply_vars_ml(self):
for i in self.incpaths_lst:
if self.bytecode_env:
app = self.bytecode_env.append_value
app('OCAMLPATH', '-I')
app('OCAMLPATH', i.srcpath(self.env))
app('OCAMLPATH', '-I')
app('OCAMLPATH', i.bldpath(self.env))
if self.native_env:
app = self.native_env.append_value
app('OCAMLPATH', '-I')
app('OCAMLPATH', i.bldpath(self.env))
app('OCAMLPATH', '-I')
app('OCAMLPATH', i.srcpath(self.env))
varnames = ['INCLUDES', 'OCAMLFLAGS', 'OCALINKFLAGS', 'OCALINKFLAGS_OPT']
for name in self.uselib.split():
for vname in varnames:
cnt = self.env[vname+'_'+name]
if cnt:
if self.bytecode_env: self.bytecode_env.append_value(vname, cnt)
if self.native_env: self.native_env.append_value(vname, cnt)
@feature('ocaml')
@after('apply_core')
def apply_link_ml(self):
if self.bytecode_env:
ext = self.islibrary and '.cma' or '.run'
linktask = self.create_task('ocalink')
linktask.bytecode = 1
linktask.set_outputs(self.path.find_or_declare(self.target + ext))
linktask.obj = self
linktask.env = self.bytecode_env
self.linktasks.append(linktask)
if self.native_env:
if self.type == 'c_object': ext = '.o'
elif self.islibrary: ext = '.cmxa'
else: ext = ''
linktask = self.create_task('ocalinkx')
linktask.set_outputs(self.path.find_or_declare(self.target + ext))
linktask.obj = self
linktask.env = self.native_env
self.linktasks.append(linktask)
# we produce a .o file to be used by gcc
self.compiled_tasks.append(linktask)
@extension(EXT_MLL)
def mll_hook(self, node):
mll_task = self.create_task('ocamllex', node, node.change_ext('.ml'), env=self.native_env)
self.mlltasks.append(mll_task)
self.allnodes.append(mll_task.outputs[0])
@extension(EXT_MLY)
def mly_hook(self, node):
mly_task = self.create_task('ocamlyacc', node, [node.change_ext('.ml'), node.change_ext('.mli')], env=self.native_env)
self.mlytasks.append(mly_task)
self.allnodes.append(mly_task.outputs[0])
task = self.create_task('ocamlcmi', mly_task.outputs[1], mly_task.outputs[1].change_ext('.cmi'), env=self.native_env)
@extension(EXT_MLI)
def mli_hook(self, node):
task = self.create_task('ocamlcmi', node, node.change_ext('.cmi'), env=self.native_env)
self.mlitasks.append(task)
@extension(EXT_MLC)
def mlc_hook(self, node):
task = self.create_task('ocamlcc', node, node.change_ext('.o'), env=self.native_env)
self.compiled_tasks.append(task)
@extension(EXT_ML)
def ml_hook(self, node):
if self.native_env:
task = self.create_task('ocamlx', node, node.change_ext('.cmx'), env=self.native_env)
task.obj = self
task.incpaths = self.bld_incpaths_lst
self.native_tasks.append(task)
if self.bytecode_env:
task = self.create_task('ocaml', node, node.change_ext('.cmo'), env=self.bytecode_env)
task.obj = self
task.bytecode = 1
task.incpaths = self.bld_incpaths_lst
self.bytecode_tasks.append(task)
def compile_may_start(self):
if not getattr(self, 'flag_deps', ''):
self.flag_deps = 1
# the evil part is that we can only compute the dependencies after the
# source files can be read (this means actually producing the source files)
if getattr(self, 'bytecode', ''): alltasks = self.obj.bytecode_tasks
else: alltasks = self.obj.native_tasks
self.signature() # ensure that files are scanned - unfortunately
tree = self.generator.bld
env = self.env
for node in self.inputs:
lst = tree.node_deps[self.unique_id()]
for depnode in lst:
for t in alltasks:
if t == self: continue
if depnode in t.inputs:
self.set_run_after(t)
# TODO necessary to get the signature right - for now
delattr(self, 'cache_sig')
self.signature()
return Task.Task.runnable_status(self)
b = Task.simple_task_type
cls = b('ocamlx', '${OCAMLOPT} ${OCAMLPATH} ${OCAMLFLAGS} ${INCLUDES} -c -o ${TGT} ${SRC}', color='GREEN', shell=False)
cls.runnable_status = compile_may_start
cls.scan = scan
b = Task.simple_task_type
cls = b('ocaml', '${OCAMLC} ${OCAMLPATH} ${OCAMLFLAGS} ${INCLUDES} -c -o ${TGT} ${SRC}', color='GREEN', shell=False)
cls.runnable_status = compile_may_start
cls.scan = scan
b('ocamlcmi', '${OCAMLC} ${OCAMLPATH} ${INCLUDES} -o ${TGT} -c ${SRC}', color='BLUE', before="ocaml ocamlcc ocamlx")
b('ocamlcc', 'cd ${TGT[0].bld_dir(env)} && ${OCAMLOPT} ${OCAMLFLAGS} ${OCAMLPATH} ${INCLUDES} -c ${SRC[0].abspath(env)}', color='GREEN')
b('ocamllex', '${OCAMLLEX} ${SRC} -o ${TGT}', color='BLUE', before="ocamlcmi ocaml ocamlcc")
b('ocamlyacc', '${OCAMLYACC} -b ${TGT[0].bld_base(env)} ${SRC}', color='BLUE', before="ocamlcmi ocaml ocamlcc")
def link_may_start(self):
if not getattr(self, 'order', ''):
# now reorder the inputs given the task dependencies
if getattr(self, 'bytecode', 0): alltasks = self.obj.bytecode_tasks
else: alltasks = self.obj.native_tasks
# this part is difficult, we do not have a total order on the tasks
# if the dependencies are wrong, this may not stop
seen = []
pendant = []+alltasks
while pendant:
task = pendant.pop(0)
if task in seen: continue
for x in task.run_after:
if not x in seen:
pendant.append(task)
break
else:
seen.append(task)
self.inputs = [x.outputs[0] for x in seen]
self.order = 1
return Task.Task.runnable_status(self)
act = b('ocalink', '${OCAMLC} -o ${TGT} ${INCLUDES} ${OCALINKFLAGS} ${SRC}', color='YELLOW', after="ocaml ocamlcc")
act.runnable_status = link_may_start
act = b('ocalinkx', '${OCAMLOPT} -o ${TGT} ${INCLUDES} ${OCALINKFLAGS_OPT} ${SRC}', color='YELLOW', after="ocamlx ocamlcc")
act.runnable_status = link_may_start
def detect(conf):
opt = conf.find_program('ocamlopt', var='OCAMLOPT')
occ = conf.find_program('ocamlc', var='OCAMLC')
if (not opt) or (not occ):
conf.fatal('The objective caml compiler was not found:\ninstall it or make it available in your PATH')
v = conf.env
v['OCAMLC'] = occ
v['OCAMLOPT'] = opt
v['OCAMLLEX'] = conf.find_program('ocamllex', var='OCAMLLEX')
v['OCAMLYACC'] = conf.find_program('ocamlyacc', var='OCAMLYACC')
v['OCAMLFLAGS'] = ''
v['OCAMLLIB'] = Utils.cmd_output(conf.env['OCAMLC']+' -where').strip()+os.sep
v['LIBPATH_OCAML'] = Utils.cmd_output(conf.env['OCAMLC']+' -where').strip()+os.sep
v['CPPPATH_OCAML'] = Utils.cmd_output(conf.env['OCAMLC']+' -where').strip()+os.sep
v['LIB_OCAML'] = 'camlrun'
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