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# -*- Mode: python; indent-tabs-mode: nil; tab-width: 40 -*-
# vim: set filetype=python:
# This Source Code Form is subject to the terms of the Mozilla Public
# License, v. 2.0. If a copy of the MPL was not distributed with this
# file, You can obtain one at http://mozilla.org/MPL/2.0/.
@template
@imports('textwrap')
@imports(_from='mozbuild.configure', _import='SandboxDependsFunction')
def compiler_class(compiler):
class Compiler(SandboxDependsFunction):
# Generates a test program and attempts to compile it. In case of
# failure, the resulting check will return None. If the test program
# succeeds, it will return the output of the test program.
# - `includes` are the includes (as file names) that will appear at the
# top of the generated test program.
# - `body` is the code that will appear in the main function of the
# generated test program. `return 0;` is appended to the function
# body automatically.
# - `flags` are the flags to be passed to the compiler, in addition to
# `-c`.
# - `check_msg` is the message to be printed to accompany compiling the
# test program.
def try_compile(self, includes=None, body='', flags=None,
check_msg=None, when=None, onerror=lambda: None):
includes = includes or []
source_lines = ['#include <%s>' % f for f in includes]
source = '\n'.join(source_lines) + '\n'
source += textwrap.dedent('''\
int
main(void)
{
%s
;
return 0;
}
''' % body)
if check_msg:
def checking_fn(fn):
return checking(check_msg)(fn)
else:
def checking_fn(fn):
return fn
@depends_when(self, dependable(flags), extra_toolchain_flags, when=when)
@checking_fn
def func(compiler, flags, extra_flags):
flags = flags or []
flags += extra_flags or []
flags.append('-c')
if try_invoke_compiler(
compiler.wrapper + [compiler.compiler] + compiler.flags,
compiler.language, source, flags,
onerror=onerror) is not None:
return True
return func
compiler.__class__ = Compiler
return compiler
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