conanfile.py

import os
from conans import ConanFile, tools, CMake
from conans.tools import Version
from conan.errors import ConanInvalidConfiguration


class KFRConan(ConanFile):
    name = "kfr"
    description = "Fast, modern C++ DSP framework, FFT, Sample Rate Conversion, FIR/IIR/Biquad Filters"
    topics = ("conan", "kfr", "avx", "fft", "audio", "dsp")
    url = "https://github.com/bincrafters/conan-kfr"
    homepage = "https://github.com/kfrlib/kfr"
    license = "GPL-2.0-or-later"
    settings = "build_type", "os", "compiler", "arch"
    options = {"dft": [True, False], "header_only": [True, False], "shared": [True, False], "fPIC": [True, False]}
    default_options = {"dft": False, "header_only": True, "shared": False, "fPIC": True}
    exports_sources = ["CMakeLists.txt", "0001-lib.patch"]
    generators = "cmake"

    @property
    def _source_subfolder(self):
        return "source_subfolder"

    @property
    def _build_subfolder(self):
        return "build_subfolder"

    def configure(self):
        if (self.settings.compiler == "gcc" and Version(self.settings.compiler.version) < "5") or (self.settings.compiler == "clang" and Version(self.settings.compiler.version) < "5"):
            raise ConanInvalidConfiguration(
                "kfr can't be build with {} {}".format(self.settings.compiler, self.settings.compiler.version))

        if self.options.dft and self.options.header_only:
            raise ConanInvalidConfiguration("DFT can not be built with header-only")
        if self.options.dft and (self.settings.compiler != "clang" and self.settings.compiler != "apple-clang"):
            raise ConanInvalidConfiguration("DFT option is only compatible with Clang")

        if self.options.header_only:
            self.settings.clear()
            del self.options.shared
            del self.options.fPIC
            del self.options.dft
        elif not self.options.header_only and self.settings.os == "Windows":
            del self.options.fPIC

    def source(self):
        tools.get(**self.conan_data["sources"][self.version])
        extracted_dir = self.name + "-" + self.version
        os.rename(extracted_dir, self._source_subfolder)

    def _configure_cmake(self):
        cmake = CMake(self)
        if not self.options.header_only:
            cmake.definitions["ENABLE_DFT"] = self.options.dft
        cmake.configure(build_folder=self._build_subfolder)
        return cmake

    def build(self):
        if not self.options.header_only:
            tools.patch(base_path=self._source_subfolder, patch_file="0001-lib.patch")
            cmake = self._configure_cmake()
            cmake.build()

    def package(self):
        self.copy(pattern="LICENSE.txt", dst="licenses", src=self._source_subfolder)
        cmake = self._configure_cmake()
        cmake.install()
        os.remove(os.path.join(self.package_folder, "include", "kfr", "io", "dr", "README.txt"))
        if self.options.header_only:
            tools.rmdir(os.path.join(self.package_folder, "lib"))

    def package_id(self):
        if self.options.header_only:
            self.info.header_only()

    def package_info(self):
        if not self.options.header_only:
            self.cpp_info.libs = tools.collect_libs(self)
            if self.options.dft:
                self.cpp_info.defines.append("KFR_ENABLE_FLAC=1")
            else:
                self.cpp_info.defines.append("KFR_NO_DFT")
        else:
            self.cpp_info.defines.append("KFR_NO_DFT")

        if tools.os_info.is_linux:
            self.cpp_info.libs.extend(["pthread", "m"])