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author | David Robillard <d@drobilla.net> | 2018-09-15 14:51:02 +0200 |
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committer | David Robillard <d@drobilla.net> | 2018-09-15 14:51:02 +0200 |
commit | eede9648d50c3750f6f8d1319a79dd76d7f10b55 (patch) | |
tree | ff0760d5f3f0e994413c8c1dff7a4fed37914bee /Tools/compiler_c.py | |
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Squashed 'waflib/' content from commit 982416b8
git-subtree-dir: waflib
git-subtree-split: 982416b8a6c6728e200243e1be3ab60435c08830
Diffstat (limited to 'Tools/compiler_c.py')
-rw-r--r-- | Tools/compiler_c.py | 110 |
1 files changed, 110 insertions, 0 deletions
diff --git a/Tools/compiler_c.py b/Tools/compiler_c.py new file mode 100644 index 00000000..2dba3f82 --- /dev/null +++ b/Tools/compiler_c.py @@ -0,0 +1,110 @@ +#!/usr/bin/env python +# encoding: utf-8 +# Matthias Jahn jahn dôt matthias ât freenet dôt de, 2007 (pmarat) + +""" +Try to detect a C compiler from the list of supported compilers (gcc, msvc, etc):: + + def options(opt): + opt.load('compiler_c') + def configure(cnf): + cnf.load('compiler_c') + def build(bld): + bld.program(source='main.c', target='app') + +The compilers are associated to platforms in :py:attr:`waflib.Tools.compiler_c.c_compiler`. To register +a new C compiler named *cfoo* (assuming the tool ``waflib/extras/cfoo.py`` exists), use:: + + from waflib.Tools.compiler_c import c_compiler + c_compiler['win32'] = ['cfoo', 'msvc', 'gcc'] + + def options(opt): + opt.load('compiler_c') + def configure(cnf): + cnf.load('compiler_c') + def build(bld): + bld.program(source='main.c', target='app') + +Not all compilers need to have a specific tool. For example, the clang compilers can be detected by the gcc tools when using:: + + $ CC=clang waf configure +""" + +import re +from waflib.Tools import ccroot +from waflib import Utils +from waflib.Logs import debug + +c_compiler = { +'win32': ['msvc', 'gcc', 'clang'], +'cygwin': ['gcc'], +'darwin': ['clang', 'gcc'], +'aix': ['xlc', 'gcc', 'clang'], +'linux': ['gcc', 'clang', 'icc'], +'sunos': ['suncc', 'gcc'], +'irix': ['gcc', 'irixcc'], +'hpux': ['gcc'], +'osf1V': ['gcc'], +'gnu': ['gcc', 'clang'], +'java': ['gcc', 'msvc', 'clang', 'icc'], +'default':['clang', 'gcc'], +} +""" +Dict mapping platform names to Waf tools finding specific C compilers:: + + from waflib.Tools.compiler_c import c_compiler + c_compiler['linux'] = ['gcc', 'icc', 'suncc'] +""" + +def default_compilers(): + build_platform = Utils.unversioned_sys_platform() + possible_compiler_list = c_compiler.get(build_platform, c_compiler['default']) + return ' '.join(possible_compiler_list) + +def configure(conf): + """ + Detects a suitable C compiler + + :raises: :py:class:`waflib.Errors.ConfigurationError` when no suitable compiler is found + """ + try: + test_for_compiler = conf.options.check_c_compiler or default_compilers() + except AttributeError: + conf.fatal("Add options(opt): opt.load('compiler_c')") + + for compiler in re.split('[ ,]+', test_for_compiler): + conf.env.stash() + conf.start_msg('Checking for %r (C compiler)' % compiler) + try: + conf.load(compiler) + except conf.errors.ConfigurationError as e: + conf.env.revert() + conf.end_msg(False) + debug('compiler_c: %r', e) + else: + if conf.env.CC: + conf.end_msg(conf.env.get_flat('CC')) + conf.env.COMPILER_CC = compiler + conf.env.commit() + break + conf.env.revert() + conf.end_msg(False) + else: + conf.fatal('could not configure a C compiler!') + +def options(opt): + """ + This is how to provide compiler preferences on the command-line:: + + $ waf configure --check-c-compiler=gcc + """ + test_for_compiler = default_compilers() + opt.load_special_tools('c_*.py', ban=['c_dumbpreproc.py']) + cc_compiler_opts = opt.add_option_group('Configuration options') + cc_compiler_opts.add_option('--check-c-compiler', default=None, + help='list of C compilers to try [%s]' % test_for_compiler, + dest="check_c_compiler") + + for x in test_for_compiler.split(): + opt.load('%s' % x) + |