[feature] Manage shared, fPIC and header_only options automatically

conan/tools/__init__.py

@@ -1,4 +1,9 @@
 from conans.model.build_info import CppInfo as _CppInfo
+from conan.tools.helpers import (
+    default_config_options,
+    default_configure,
+    default_package_id
+)
 
 
 def CppInfo(conanfile):

conan/tools/helpers.py

@@ -0,0 +1,19 @@
+from conans.model.pkg_type import PackageType
+
+
+def default_config_options(conanfile):
+    if conanfile.settings.get_safe("os") == "Windows":
+        conanfile.options.rm_safe("fPIC")
+
+
+def default_configure(conanfile):
+    if conanfile.options.get_safe("header_only"):
+        conanfile.options.rm_safe("fPIC")
+        conanfile.options.rm_safe("shared")
+    elif conanfile.options.get_safe("shared"):
+        conanfile.options.rm_safe("fPIC")
+
+
+def default_package_id(conanfile):
+    if conanfile.options.get_safe("header_only") or conanfile.package_type is PackageType.HEADER:
+        conanfile.info.clear()

conans/client/conanfile/configure.py

@@ -1,6 +1,7 @@
 from conans.errors import conanfile_exception_formatter
 from conans.model.pkg_type import PackageType
 from conans.model.requires import BuildRequirements, TestRequirements, ToolRequirements
+from conan.tools import default_config_options, default_configure
 
 
 def run_configure_method(conanfile, down_options, profile_options, ref):
@@ -9,6 +10,8 @@ def run_configure_method(conanfile, down_options, profile_options, ref):
     if hasattr(conanfile, "config_options"):
         with conanfile_exception_formatter(conanfile, "config_options"):
             conanfile.config_options()
+    else:
+        default_config_options(conanfile)
 
     # Assign only the current package options values, but none of the dependencies
     is_consumer = conanfile._conan_is_consumer
@@ -17,6 +20,8 @@ def run_configure_method(conanfile, down_options, profile_options, ref):
     if hasattr(conanfile, "configure"):
         with conanfile_exception_formatter(conanfile, "configure"):
             conanfile.configure()
+    else:
+        default_configure(conanfile)
 
     self_options, up_options = conanfile.options.get_upstream_options(down_options, ref,
                                                                       is_consumer)

conans/client/graph/compute_pid.py

@@ -3,6 +3,7 @@
 from conans.errors import conanfile_exception_formatter, ConanInvalidConfiguration, \
     conanfile_remove_attr, ConanException
 from conans.model.info import ConanInfo, RequirementsInfo, RequirementInfo, PythonRequiresInfo
+from conan.tools import default_package_id
 
 
 def compute_package_id(node, new_config):
@@ -81,5 +82,6 @@ def run_validate_package_id(conanfile):
         with conanfile_exception_formatter(conanfile, "package_id"):
             with conanfile_remove_attr(conanfile, ['cpp_info', 'settings', 'options'], "package_id"):
                 conanfile.package_id()
-
+    else:
+        default_package_id(conanfile)
     conanfile.info.validate()

conans/test/functional/toolchains/cmake/test_cmake.py

@@ -217,7 +217,6 @@ def test_toolchain_win(self, compiler, build_type, runtime, version, cppstd, arc
         options = {"shared": shared}
         save(self.client.cache.new_config_path, "tools.build:jobs=1")
         install_out = self._run_build(settings, options)
-        self.assertIn("WARN: Toolchain: Ignoring fPIC option defined for Windows", install_out)
 
         # FIXME: Hardcoded VS version and partial toolset check
         toolchain_path = os.path.join(self.client.current_folder, "build",
@@ -314,7 +313,6 @@ def test_toolchain_mingw_win(self, build_type, libcxx, version, cppstd, arch, sh
                     }
         options = {"shared": shared}
         install_out = self._run_build(settings, options)
-        self.assertIn("WARN: Toolchain: Ignoring fPIC option defined for Windows", install_out)
         self.assertIn("The C compiler identification is GNU", self.client.out)
         toolchain_path = os.path.join(self.client.current_folder, "build",
                                       "conan_toolchain.cmake").replace("\\", "/")
@@ -396,7 +394,8 @@ def test_toolchain_linux(self, build_type, cppstd, arch, libcxx, shared):
                 "CMAKE_SHARED_LINKER_FLAGS": arch_str,
                 "CMAKE_EXE_LINKER_FLAGS": arch_str,
                 "COMPILE_DEFINITIONS": defines,
-                "CMAKE_POSITION_INDEPENDENT_CODE": "ON"
+                # fPIC is managed automatically depending on the shared option value
+                "CMAKE_POSITION_INDEPENDENT_CODE": "ON" if not shared else ""
                 }
 
         def _verify_out(marker=">>"):

conans/test/integration/options/test_configure_options.py

@@ -0,0 +1,169 @@
+import textwrap
+import unittest
+
+from parameterized import parameterized
+
+from conans.test.utils.tools import TestClient
+
+
+class ConfigureOptionsTest(unittest.TestCase):
+    """
+    Test config_options(), configure() and package_id() methods can manage shared, fPIC and
+    header_only options automatically.
+    """
+
+    @parameterized.expand([
+        ["Linux", False, False, False, [False, False, False]],
+        ["Windows", False, False, False, [False, None, False]],
+        ["Windows", True, False, False, [True, None, False]],
+        ["Windows", False, False, True, [None, None, True]],
+        ["Linux", False, False, True, [None, None, True]],
+        ["Linux", True, True, False, [True, None, False]],
+        ["Linux", True, False, False, [True, None, False]],
+        ["Linux", True, True, True, [None, None, True]],
+        ["Linux", True, True, True, [None, None, True]],
+        ["Linux", False, True, False, [False, True, False]],
+        ["Linux", False, True, False, [False, True, False]],
+    ])
+    def test_methods_not_defined(self, settings_os, shared, fpic, header_only, result):
+        """
+        Test that options are managed automatically when methods config_otpions and configure are not
+        defined.
+        Check that header only package gets its unique package ID.
+        """
+        client = TestClient()
+        conanfile = textwrap.dedent(f"""\
+           from conan import ConanFile
+
+           class Pkg(ConanFile):
+               settings = "os", "compiler", "arch", "build_type"
+               options = {{"shared": [True, False], "fPIC": [True, False], "header_only": [True, False]}}
+               default_options = {{"shared": {shared}, "fPIC": {fpic}, "header_only": {header_only}}}
+
+               def build(self):
+                   shared = self.options.get_safe("shared")
+                   fpic = self.options.get_safe("fPIC")
+                   header_only = self.options.get_safe("header_only")
+                   self.output.info(f"shared: {{shared}}, fPIC: {{fpic}}, header only: {{header_only}}")
+            """)
+        client.save({"conanfile.py": conanfile})
+        client.run(f"create . --name=pkg --version=0.1 -s os={settings_os}")
+        result = f"shared: {result[0]}, fPIC: {result[1]}, header only: {result[2]}"
+        self.assertIn(result, client.out)
+        if header_only:
+            self.assertIn("Package 'da39a3ee5e6b4b0d3255bfef95601890afd80709' created", client.out)
+
+    @parameterized.expand([
+        ["Linux", False, False, False, [False, False, False]],
+        ["Linux", False, False, True, [False, False, True]],
+        ["Linux", False, True, False, [False, True, False]],
+        ["Linux", False, True, True, [False, True, True]],
+        ["Linux", True, False, False, [True, False, False]],
+        ["Linux", True, False, True, [True, False, True]],
+        ["Linux", True, True, False, [True, True, False]],
+        ["Linux", True, True, True, [True, True, True]],
+        ["Windows", False, False, False, [False, False, False]],
+        ["Windows", False, False, True, [False, False, True]],
+        ["Windows", False, True, False, [False, True, False]],
+        ["Windows", False, True, True, [False, True, True]],
+        ["Windows", True, False, False, [True, False, False]],
+        ["Windows", True, False, True, [True, False, True]],
+        ["Windows", True, True, False, [True, True, False]],
+        ["Windows", True, True, True, [True, True, True]],
+    ])
+    def test_optout(self, settings_os, shared, fpic, header_only, result):
+        """
+        Test that options are not managed automatically when methods are defined.
+        Check that header only package gets its unique package ID.
+        """
+        client = TestClient()
+        conanfile = textwrap.dedent(f"""\
+           from conan import ConanFile
+
+           class Pkg(ConanFile):
+               settings = "os", "compiler", "arch", "build_type"
+               options = {{"shared": [True, False], "fPIC": [True, False], "header_only": [True, False]}}
+               default_options = {{"shared": {shared}, "fPIC": {fpic}, "header_only": {header_only}}}
+
+               def config_options(self):
+                   pass
+
+               def configure(self):
+                   pass
+
+               def build(self):
+                   shared = self.options.get_safe("shared")
+                   fpic = self.options.get_safe("fPIC")
+                   header_only = self.options.get_safe("header_only")
+                   self.output.info(f"shared: {{shared}}, fPIC: {{fpic}}, header only: {{header_only}}")
+            """)
+        client.save({"conanfile.py": conanfile})
+        client.run(f"create . --name=pkg --version=0.1 -s os={settings_os}")
+        result = f"shared: {result[0]}, fPIC: {result[1]}, header only: {result[2]}"
+        self.assertIn(result, client.out)
+        if header_only:
+            self.assertIn("Package 'da39a3ee5e6b4b0d3255bfef95601890afd80709' created", client.out)
+
+    @parameterized.expand([
+        ["Linux", False, False, False, [False, False, False]],
+        ["Windows", False, False, False, [False, None, False]],
+        ["Windows", True, False, False, [True, None, False]],
+        ["Windows", False, False, True, [None, None, True]],
+        ["Linux", False, False, True, [None, None, True]],
+        ["Linux", True, True, False, [True, None, False]],
+        ["Linux", True, False, False, [True, None, False]],
+        ["Linux", True, True, True, [None, None, True]],
+        ["Linux", True, True, True, [None, None, True]],
+        ["Linux", False, True, False, [False, True, False]],
+        ["Linux", False, True, False, [False, True, False]],
+    ])
+    def test_methods_defined_explicit(self, settings_os, shared, fpic, header_only, result):
+        """
+        Test that options are managed when the tool is used in methods defined by user.
+        Check that header only package gets its unique package ID.
+        """
+        client = TestClient()
+        conanfile = textwrap.dedent(f"""\
+               from conan import ConanFile
+               from conan.tools import default_config_options, default_configure
+
+               class Pkg(ConanFile):
+                   settings = "os", "compiler", "arch", "build_type"
+                   options = {{"shared": [True, False], "fPIC": [True, False], "header_only": [True, False]}}
+                   default_options = {{"shared": {shared}, "fPIC": {fpic}, "header_only": {header_only}}}
+
+                   def config_options(self):
+                       default_config_options(self)
+
+                   def configure(self):
+                       default_configure(self)
+
+                   def build(self):
+                       shared = self.options.get_safe("shared")
+                       fpic = self.options.get_safe("fPIC")
+                       header_only = self.options.get_safe("header_only")
+                       self.output.info(f"shared: {{shared}}, fPIC: {{fpic}}, header only: {{header_only}}")
+                """)
+        client.save({"conanfile.py": conanfile})
+        client.run(f"create . --name=pkg --version=0.1 -s os={settings_os}")
+        result = f"shared: {result[0]}, fPIC: {result[1]}, header only: {result[2]}"
+        self.assertIn(result, client.out)
+        if header_only:
+            self.assertIn("Package 'da39a3ee5e6b4b0d3255bfef95601890afd80709' created", client.out)
+
+    def test_header_package_type_pid(self):
+        """
+        Test that we get the pid for header only when package type is set to header-library
+        """
+        client = TestClient()
+        conanfile = textwrap.dedent(f"""\
+               from conan import ConanFile
+
+               class Pkg(ConanFile):
+                   settings = "os", "compiler", "arch", "build_type"
+                   package_type = "header-library"
+
+                """)
+        client.save({"conanfile.py": conanfile})
+        client.run(f"create . --name=pkg --version=0.1")
+        self.assertIn("Package 'da39a3ee5e6b4b0d3255bfef95601890afd80709' created", client.out)

conans/test/integration/package_id/test_default_package_id.py

@@ -5,9 +5,9 @@
 
 
 @pytest.mark.parametrize("typedep, typeconsumer, different_id",
-                         [("header-library", "application", True),
-                          ("header-library", "shared-library", True),
-                          ("header-library", "static-library", True),
+                         [("header-library", "application", False),
+                          ("header-library", "shared-library", False),
+                          ("header-library", "static-library", False),
                           ("static-library", "application", True),
                           ("static-library", "shared-library", True),
                           ("static-library", "header-library", False),
@@ -33,7 +33,8 @@ def test_default_package_id_options(typedep, typeconsumer, different_id):
     pid1 = c.created_package_id("dep/0.1")
     c.run("create dep -o dep/*:myopt=False")
     pid2 = c.created_package_id("dep/0.1")
-    assert pid1 != pid2
+    if typedep != "header-library":
+        assert pid1 != pid2
 
     c.run("create consumer -o dep/*:myopt=True")
     pid1 = c.created_package_id("consumer/0.1")

conans/test/utils/mocks.py

@@ -62,6 +62,9 @@ def __getattr__(self, name):
         except KeyError:
             raise ConanException("'%s' value not defined" % name)
 
+    def rm_safe(self, name):
+        self.values.pop(name, None)
+
 
 class MockCppInfo(object):
     def __init__(self):
@@ -81,6 +84,7 @@ class MockConanfile(ConanFile):
     def __init__(self, settings, options=None, runner=None):
         self.display_name = ""
         self._conan_node = None
+        self.package_type = "unknown"
         self.folders = Folders()
         self.settings = settings
         self.settings_build = settings
@@ -90,9 +94,15 @@ def __init__(self, settings, options=None, runner=None):
         self.conf = Conf()
 
         class MockConanInfo:
-            pass
+            settings = None
+            options = None
+
+            def clear(self):
+                self.settings = {}
+                self.options = {}
         self.info = MockConanInfo()
         self.info.settings = settings  # Incomplete, only settings for Cppstd Min/Max tests
+        self.info.options = options
 
     def run(self, *args, **kwargs):
         if self.runner: