build/conanfile.py

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#!/usr/bin/env python3
"""
This is a master conanfile.py which can be symlinked into a root directory and automatically discover conanfile.txt
from child packages from nerdcruft. (ie, from the glob cruft/*/conanfile.txt).
It also looks for a file _conanfile.txt in the same directory as this script. This config is loaded at the end and so
its [options] section will override any other options present in the defaults, or child packages.,
"""
from conans.client.loader_txt import ConanFileTextLoader
from conans.model.options import Options
from conan import ConanFile
from conan.tools.files import copy
import os
import glob
def slurp(path: str) -> str:
with open(path, 'rt') as f:
return f.read()
# Load all the conanfile.txt of submodules
dirname = os.path.abspath(os.path.dirname(__file__))
print(dirname)
subpackages = [
ConanFileTextLoader(slurp(i))
for i in glob.glob(
os.path.join(
dirname, 'cruft', "*", 'conanfile.txt')
)
]
# Attempt to load a conanfile.txt in the root directory too.
try:
subpackages.append(
ConanFileTextLoader(
slurp(os.path.join(dirname, '_conanfile.txt'))
)
)
except FileNotFoundError:
pass
# Combine all the options and requirements
_opt = Options()
for i in subpackages:
_opt.update_options(Options.loads(i.options))
_opt = _opt.serialize()
_requirements = tuple(j for i in subpackages for j in i.requirements)
class RootConan(ConanFile):
name = 'cruft-root'
version = '0.1'
settings = "os", "compiler", "build_type", "arch"
requires = _requirements
tool_requires = (
'cmake/[>=3.23]'
)
generators = 'CMakeDeps', 'CMakeToolchain'
default_options = {'*:shared': True} | _opt
LIB_PATTERNS = (
"*.dylib",
"*.dll",
"*.dll.a",
"*.so",
"*.so.*",
)
# Conan2 doesn't have a "deploy" function.
#
# For the time being use this post-processing step to emulate it.
def generate(self):
for dep in self.dependencies.values():
deps_dir = f"{self.build_folder}/deps"
for src_dir in dep.cpp_info.libdirs + dep.cpp_info.bindirs:
for pattern in self.LIB_PATTERNS:
copy(self, pattern, src_dir, deps_dir)