from conan import ConanFile from conan.errors import ConanInvalidConfiguration from conan.tools.apple import is_apple_os from conan.tools.cmake import CMake, CMakeToolchain, CMakeDeps, cmake_layout from conan.tools.files import apply_conandata_patches, copy, export_conandata_patches, get, replace_in_file, rm, rmdir from conan.tools.microsoft import is_msvc from conan.tools.scm import Version import os required_conan_version = ">=1.53.0" class LibpngConan(ConanFile): name = "libpng" description = "libpng is the official PNG file format reference library." url = "https://github.com/conan-io/conan-center-index" homepage = "http://www.libpng.org" license = "libpng-2.0" topics = ("png", "graphics", "image") settings = "os", "arch", "compiler", "build_type" options = { "shared": [True, False], "fPIC": [True, False], "neon": [True, "check", False], "msa": [True, False], "sse": [True, False], "vsx": [True, False], "api_prefix": ["ANY"], } default_options = { "shared": False, "fPIC": True, "neon": True, "msa": True, "sse": True, "vsx": True, "api_prefix": "", } @property def _has_neon_support(self): return "arm" in self.settings.arch @property def _has_msa_support(self): return "mips" in self.settings.arch @property def _has_sse_support(self): return self.settings.arch in ["x86", "x86_64"] @property def _has_vsx_support(self): return "ppc" in self.settings.arch def export_sources(self): export_conandata_patches(self) def config_options(self): if self.settings.os == "Windows": del self.options.fPIC if not self._has_neon_support: del self.options.neon if not self._has_msa_support: del self.options.msa if not self._has_sse_support: del self.options.sse if not self._has_vsx_support: del self.options.vsx def configure(self): if self.options.shared: self.options.rm_safe("fPIC") self.settings.rm_safe("compiler.libcxx") self.settings.rm_safe("compiler.cppstd") def layout(self): cmake_layout(self, src_folder="src") def requirements(self): self.requires("zlib/1.2.13") def validate(self): if Version(self.version) < "1.6" and self.settings.arch == "armv8" and is_apple_os(self): raise ConanInvalidConfiguration(f"{self.ref} currently does not building for {self.settings.os} {self.settings.arch}. Contributions are welcomed") def source(self): get(self, **self.conan_data["sources"][self.version], strip_root=True) @property def _neon_msa_sse_vsx_mapping(self): return { "True": "on", "False": "off", "check": "check", } def generate(self): tc = CMakeToolchain(self) tc.variables["PNG_TESTS"] = False tc.variables["PNG_SHARED"] = self.options.shared tc.variables["PNG_STATIC"] = not self.options.shared tc.variables["PNG_DEBUG"] = self.settings.build_type == "Debug" tc.variables["PNG_PREFIX"] = self.options.api_prefix if self._has_neon_support: tc.variables["PNG_ARM_NEON"] = self._neon_msa_sse_vsx_mapping[str(self.options.neon)] if self._has_msa_support: tc.variables["PNG_MIPS_MSA"] = self._neon_msa_sse_vsx_mapping[str(self.options.msa)] if self._has_sse_support: tc.variables["PNG_INTEL_SSE"] = self._neon_msa_sse_vsx_mapping[str(self.options.sse)] if self._has_vsx_support: tc.variables["PNG_POWERPC_VSX"] = self._neon_msa_sse_vsx_mapping[str(self.options.vsx)] if Version(self.version) >= "1.6.38": tc.variables["PNG_EXECUTABLES"] = False tc.cache_variables["CMAKE_MACOSX_BUNDLE"] = False tc.generate() tc = CMakeDeps(self) tc.generate() def _patch_sources(self): apply_conandata_patches(self) if self.settings.os == "Windows": if Version(self.version) <= "1.5.2": replace_in_file(self, os.path.join(self.source_folder, "CMakeLists.txt"), 'set(PNG_LIB_NAME_STATIC ${PNG_LIB_NAME}_static)', 'set(PNG_LIB_NAME_STATIC ${PNG_LIB_NAME})') else: replace_in_file(self, os.path.join(self.source_folder, "CMakeLists.txt"), 'OUTPUT_NAME "${PNG_LIB_NAME}_static', 'OUTPUT_NAME "${PNG_LIB_NAME}') if not is_msvc(self): if Version(self.version) < "1.6.38": src_text = 'COMMAND "${CMAKE_COMMAND}" -E copy_if_different $ $/${DEST_FILE}' else: src_text = '''COMMAND "${CMAKE_COMMAND}" -E copy_if_different $ $/${DEST_FILE}''' replace_in_file(self, os.path.join(self.source_folder, "CMakeLists.txt"), src_text, 'COMMAND "${CMAKE_COMMAND}" -E copy_if_different $/$ $/${DEST_FILE}') def build(self): self._patch_sources() cmake = CMake(self) cmake.configure() cmake.build() def package(self): copy(self, "LICENSE", src=self.source_folder, dst=os.path.join(self.package_folder, "licenses")) cmake = CMake(self) cmake.install() if self.options.shared: rm(self, "*[!.dll]", os.path.join(self.package_folder, "bin")) else: rmdir(self, os.path.join(self.package_folder, "bin")) rmdir(self, os.path.join(self.package_folder, "lib", "libpng")) rmdir(self, os.path.join(self.package_folder, "lib", "pkgconfig")) rmdir(self, os.path.join(self.package_folder, "share")) def package_info(self): major_min_version = f"{Version(self.version).major}{Version(self.version).minor}" self.cpp_info.set_property("cmake_find_mode", "both") self.cpp_info.set_property("cmake_file_name", "PNG") self.cpp_info.set_property("cmake_target_name", "PNG::PNG") self.cpp_info.set_property("pkg_config_name", "libpng") self.cpp_info.set_property("pkg_config_aliases", [f"libpng{major_min_version}"]) prefix = "lib" if is_msvc(self) else "" suffix = major_min_version if self.settings.os == "Windows" else "" suffix += "d" if self.settings.os == "Windows" and self.settings.build_type == "Debug" else "" self.cpp_info.libs = [f"{prefix}png{suffix}"] if self.settings.os in ["Linux", "Android", "FreeBSD", "SunOS", "AIX"]: self.cpp_info.system_libs.append("m") # TODO: Remove after Conan 2.0 self.cpp_info.names["cmake_find_package"] = "PNG" self.cpp_info.names["cmake_find_package_multi"] = "PNG"

libpng/1.6.39

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