zlib/conanfile.py

from conans import ConanFile, tools
from conans.errors import ConanInvalidConfiguration
from conans.tools import os_info
import os


class ZlibConan(ConanFile):
    name = "zlib"
    version = "1.2.11"
    license = "Zlib"
    author = "Shawn Morford <DarkMorford@Gmail.com>"
    url = "https://code.darkmorford.net/conan-pkg/zlib"
    description = "A Massively Spiffy Yet Delicately Unobtrusive Compression Library"
    homepage = "http://zlib.net/"
    topics = ("compression", "utility")
    exports_sources = ["patches/*"]
    settings = "os", "compiler", "build_type", "arch"
    options = {"shared": [True, False]}
    default_options = {"shared": False}

    @property
    def subfolder(self):
        return os.path.join(self.source_folder, f"zlib-{self.version}")

    def configure(self):
        del self.settings.compiler.cppstd
        del self.settings.compiler.libcxx

    def source(self):
        tools.get(**self.conan_data["sources"][self.version])
        for patch in self.conan_data["patches"][self.version]:
            tools.patch(base_path=self.subfolder, **patch)

    def _build_nmake(self):
        flags = [f"-{self.settings.compiler.runtime}"]
        if self.settings.build_type == "Debug":
            flags.append("-Od")
        else:
            flags.append("-O2")
        with tools.vcvars(self.settings), tools.chdir(self.subfolder):
            makefile = os.path.join("win32", "Makefile.msc")
            flags = " ".join(flags)
            self.run(f'nmake -f "{makefile}" LOC="{flags}"')

    def build(self):
        if self.settings.compiler == "Visual Studio" and os_info.is_windows:
            self._build_nmake()
        else:
            raise ConanInvalidConfiguration("This configuration is not yet supported.")

    def build_id(self):
        if self.settings.compiler == "Visual Studio":
            self.info_build.options.shared = "Both"

    def package(self):
        self.copy("zlib.h", dst="include", src=f"zlib-{self.version}")
        self.copy("zconf.h", dst="include", src=f"zlib-{self.version}")
        if self.options.shared:
            self.copy("*zdll.lib", dst="lib", keep_path=False)
            self.copy("*zlib1.dll", dst="bin", keep_path=False)
        else:
            self.copy("*zlib.lib", dst="lib", keep_path=False)
        self.copy("*.so", dst="lib", keep_path=False)
        self.copy("*.dylib", dst="lib", keep_path=False)
        self.copy("*.a", dst="lib", keep_path=False)

    def package_info(self):
        if self.settings.os == "Windows":
            self.cpp_info.libs = ["zdll"] if self.options.shared else ["zlib"]
        else:
            self.cpp_info.libs = ["z"]