pandemonium_engine/SCSCons/Tool/mingw.py

# MIT License
#
# Copyright The SCons Foundation
#
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"""SCons.Tool.gcc

Tool-specific initialization for MinGW (http://www.mingw.org/)

There normally shouldn't be any need to import this module directly.
It will usually be imported through the generic SCons.Tool.Tool()
selection method.

"""

import os
import os.path
import glob

import SCons.Action
import SCons.Builder
import SCons.Defaults
import SCons.Tool
import SCons.Util

mingw_paths = [
    r'c:\MinGW\bin',
    r'C:\cygwin64\bin',
    r'C:\msys64',
    r'C:\msys64\mingw64\bin',
    r'C:\cygwin\bin',
    r'C:\msys',
    r'C:\ProgramData\chocolatey\lib\mingw\tools\install\mingw64\bin'
]


def shlib_generator(target, source, env, for_signature):
    cmd = SCons.Util.CLVar(['$SHLINK', '$SHLINKFLAGS'])

    dll = env.FindIxes(target, 'SHLIBPREFIX', 'SHLIBSUFFIX')
    if dll: cmd.extend(['-o', dll])

    cmd.extend(['$SOURCES', '$_LIBDIRFLAGS', '$_LIBFLAGS'])

    implib = env.FindIxes(target, 'LIBPREFIX', 'LIBSUFFIX')
    if implib: cmd.append('-Wl,--out-implib,' + implib.get_string(for_signature))

    def_target = env.FindIxes(target, 'WINDOWSDEFPREFIX', 'WINDOWSDEFSUFFIX')
    insert_def = env.subst("$WINDOWS_INSERT_DEF")
    if insert_def not in ['', '0', 0] and def_target: \
            cmd.append('-Wl,--output-def,' + def_target.get_string(for_signature))

    return [cmd]


def shlib_emitter(target, source, env):
    dll = env.FindIxes(target, 'SHLIBPREFIX', 'SHLIBSUFFIX')
    no_import_lib = env.get('no_import_lib', 0)

    if not dll:
        raise SCons.Errors.UserError(
            "A shared library should have exactly one target with the suffix: %s Target(s) are:%s" % \
            (env.subst("$SHLIBSUFFIX"), ",".join([str(t) for t in target])))

    if not no_import_lib and \
            not env.FindIxes(target, 'LIBPREFIX', 'LIBSUFFIX'):
        # Create list of target libraries as strings
        targetStrings = env.ReplaceIxes(dll,
                                        'SHLIBPREFIX', 'SHLIBSUFFIX',
                                        'LIBPREFIX', 'LIBSUFFIX')

        # Now add file nodes to target list
        target.append(env.fs.File(targetStrings))

    # Append a def file target if there isn't already a def file target
    # or a def file source or the user has explicitly asked for the target
    # to be emitted.
    def_source = env.FindIxes(source, 'WINDOWSDEFPREFIX', 'WINDOWSDEFSUFFIX')
    def_target = env.FindIxes(target, 'WINDOWSDEFPREFIX', 'WINDOWSDEFSUFFIX')
    skip_def_insert = env.subst("$WINDOWS_INSERT_DEF") in ['', '0', 0]
    if not def_source and not def_target and not skip_def_insert:
        # Create list of target libraries and def files as strings
        targetStrings = env.ReplaceIxes(dll,
                                        'SHLIBPREFIX', 'SHLIBSUFFIX',
                                        'WINDOWSDEFPREFIX', 'WINDOWSDEFSUFFIX')

        # Now add file nodes to target list
        target.append(env.fs.File(targetStrings))

    return (target, source)


shlib_action = SCons.Action.Action(shlib_generator, '$SHLINKCOMSTR', generator=1)
ldmodule_action = SCons.Action.Action(shlib_generator, '$LDMODULECOMSTR', generator=1)

res_action = SCons.Action.Action('$RCCOM', '$RCCOMSTR')

res_builder = SCons.Builder.Builder(action=res_action, suffix='.o',
                                    source_scanner=SCons.Tool.SourceFileScanner)
SCons.Tool.SourceFileScanner.add_scanner('.rc', SCons.Defaults.CScan)

# This is what we search for to find mingw:
# key_program = 'mingw32-gcc'
key_program = 'mingw32-make'


def find_version_specific_mingw_paths():
    r"""
    One example of default mingw install paths is:
    C:\mingw-w64\x86_64-6.3.0-posix-seh-rt_v5-rev2\mingw64\bin

    Use glob'ing to find such and add to mingw_paths
    """
    new_paths = glob.glob(r"C:\mingw-w64\*\mingw64\bin")

    return new_paths


def generate(env):
    global mingw_paths
    # Check for reasoanble mingw default paths
    mingw_paths += find_version_specific_mingw_paths()

    mingw = SCons.Tool.find_program_path(env, key_program, default_paths=mingw_paths)
    if mingw:
        mingw_bin_dir = os.path.dirname(mingw)

        # Adjust path if we found it in a chocolatey install
        if mingw_bin_dir == r'C:\ProgramData\chocolatey\bin':
            mingw_bin_dir = r'C:\ProgramData\chocolatey\lib\mingw\tools\install\mingw64\bin'

        env.AppendENVPath('PATH', mingw_bin_dir)

    # Most of mingw is the same as gcc and friends...
    gnu_tools = ['gcc', 'g++', 'gnulink', 'ar', 'gas', 'gfortran', 'm4']
    for tool in gnu_tools:
        SCons.Tool.Tool(tool)(env)

    # ... but a few things differ:
    env['CC'] = 'gcc'
    # make sure the msvc tool doesnt break us, it added a /flag
    if 'CCFLAGS' in env:
        # make sure its a CLVar to handle list or str cases
        if type(env['CCFLAGS']) is not SCons.Util.CLVar:
            env['CCFLAGS'] = SCons.Util.CLVar(env['CCFLAGS'])
        env['CCFLAGS'] = SCons.Util.CLVar(str(env['CCFLAGS']).replace('/nologo', ''))
    env['SHCCFLAGS'] = SCons.Util.CLVar('$CCFLAGS')
    env['CXX'] = 'g++'
    env['SHCXXFLAGS'] = SCons.Util.CLVar('$CXXFLAGS')
    env['SHLINKFLAGS'] = SCons.Util.CLVar('$LINKFLAGS -shared')
    env['SHLINKCOM'] = shlib_action
    env['SHLINKCOMSTR'] = shlib_generator
    env['LDMODULECOM'] = ldmodule_action
    env.Append(SHLIBEMITTER=[shlib_emitter])
    env.Append(LDMODULEEMITTER=[shlib_emitter])
    env['AS'] = 'as'

    env['WINDOWSDEFPREFIX'] = ''
    env['WINDOWSDEFSUFFIX'] = '.def'

    env['SHOBJSUFFIX'] = '.o'
    env['STATIC_AND_SHARED_OBJECTS_ARE_THE_SAME'] = 1
    env['RC'] = 'windres'
    env['RCFLAGS'] = SCons.Util.CLVar('')
    env['RCINCFLAGS'] = '${_concat(RCINCPREFIX, CPPPATH, RCINCSUFFIX, __env__, RDirs, TARGET, SOURCE, affect_signature=False)}'
    env['RCINCPREFIX'] = '--include-dir '
    env['RCINCSUFFIX'] = ''
    env['RCCOM'] = '$RC $_CPPDEFFLAGS $RCINCFLAGS ${RCINCPREFIX} ${SOURCE.dir} $RCFLAGS -i $SOURCE -o $TARGET'
    env['BUILDERS']['RES'] = res_builder

    # Some setting from the platform also have to be overridden:
    env['OBJSUFFIX'] = '.o'
    env['LIBPREFIX'] = 'lib'
    env['LIBSUFFIX'] = '.a'
    env['PROGSUFFIX'] = '.exe'

    # Handle new versioned shared library logic
    env['_SHLIBSUFFIX'] = '$SHLIBSUFFIX'
    env["SHLIBPREFIX"] = ""

    # Disable creating symlinks for versioned shared library.
    env['SHLIBNOVERSIONSYMLINKS'] = True
    env['LDMODULENOVERSIONSYMLINKS'] = True
    env['IMPLIBNOVERSIONSYMLINKS'] = True



def exists(env):
    mingw = SCons.Tool.find_program_path(env, key_program, default_paths=mingw_paths)
    if mingw:
        mingw_bin_dir = os.path.dirname(mingw)
        env.AppendENVPath('PATH', mingw_bin_dir)

    return mingw

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