b4fc4da903
`ExternalProject_Add_StepTargets` and `INDEPENDENT_STEP_TARGETS` have some limitations and lack some sanity checks. They can cause confusing build systems to be generated. The basic problems are: * The notion of step independence is attached to the step target rather than the step itself. * The custom commands implementing the steps are duplicated in the step targets and the primary targets. This can cause races. It is also incompatible with the Xcode "new build system". Fix this by introducing policy CMP0114 to change the way step target dependencies are handled. Define independence from external dependencies as a property of each individual step regardless of whether there is a target for it. Add dependencies among the primary target and the step targets such that each custom command only appears in one target. When some steps are disconnected from the primary target, add step targets for the steps commonly depended upon so that there is a place to hold their custom commands uniquely. Fixes: #18663
459 lines
31 KiB
C++
459 lines
31 KiB
C++
/* Distributed under the OSI-approved BSD 3-Clause License. See accompanying
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file Copyright.txt or https://cmake.org/licensing for details. */
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#pragma once
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#include "cmConfigure.h" // IWYU pragma: keep
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#include <bitset>
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#include <string>
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class cmMakefile;
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#define CM_FOR_EACH_POLICY_TABLE(POLICY, SELECT) \
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SELECT(POLICY, CMP0000, \
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"A minimum required CMake version must be specified.", 2, 6, 0, \
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cmPolicies::WARN) \
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SELECT(POLICY, CMP0001, \
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"CMAKE_BACKWARDS_COMPATIBILITY should no longer be used.", 2, 6, 0, \
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cmPolicies::WARN) \
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SELECT(POLICY, CMP0002, "Logical target names must be globally unique.", 2, \
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6, 0, cmPolicies::WARN) \
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SELECT( \
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POLICY, CMP0003, \
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"Libraries linked via full path no longer produce linker search paths.", \
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2, 6, 0, cmPolicies::WARN) \
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SELECT(POLICY, CMP0004, \
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"Libraries linked may not have leading or trailing whitespace.", 2, \
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6, 0, cmPolicies::WARN) \
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SELECT(POLICY, CMP0005, \
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"Preprocessor definition values are now escaped automatically.", 2, \
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6, 0, cmPolicies::WARN) \
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SELECT(POLICY, CMP0006, \
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"Installing MACOSX_BUNDLE targets requires a BUNDLE DESTINATION.", \
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2, 6, 0, cmPolicies::WARN) \
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SELECT(POLICY, CMP0007, "list command no longer ignores empty elements.", \
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2, 6, 0, cmPolicies::WARN) \
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SELECT( \
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POLICY, CMP0008, \
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"Libraries linked by full-path must have a valid library file name.", 2, \
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6, 1, cmPolicies::WARN) \
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SELECT(POLICY, CMP0009, \
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"FILE GLOB_RECURSE calls should not follow symlinks by default.", 2, \
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6, 2, cmPolicies::WARN) \
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SELECT(POLICY, CMP0010, "Bad variable reference syntax is an error.", 2, 6, \
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3, cmPolicies::WARN) \
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SELECT(POLICY, CMP0011, \
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"Included scripts do automatic cmake_policy PUSH and POP.", 2, 6, 3, \
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cmPolicies::WARN) \
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SELECT(POLICY, CMP0012, "if() recognizes numbers and boolean constants.", \
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2, 8, 0, cmPolicies::WARN) \
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SELECT(POLICY, CMP0013, "Duplicate binary directories are not allowed.", 2, \
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8, 0, cmPolicies::WARN) \
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SELECT(POLICY, CMP0014, "Input directories must have CMakeLists.txt.", 2, \
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8, 0, cmPolicies::WARN) \
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SELECT(POLICY, CMP0015, \
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"link_directories() treats paths relative to the source dir.", 2, 8, \
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1, cmPolicies::WARN) \
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SELECT(POLICY, CMP0016, \
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"target_link_libraries() reports error if its only argument " \
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"is not a target.", \
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2, 8, 3, cmPolicies::WARN) \
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SELECT(POLICY, CMP0017, \
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"Prefer files from the CMake module directory when including from " \
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"there.", \
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2, 8, 4, cmPolicies::WARN) \
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SELECT(POLICY, CMP0018, \
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"Ignore CMAKE_SHARED_LIBRARY_<Lang>_FLAGS variable.", 2, 8, 9, \
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cmPolicies::WARN) \
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SELECT(POLICY, CMP0019, \
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"Do not re-expand variables in include and link information.", 2, 8, \
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11, cmPolicies::WARN) \
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SELECT(POLICY, CMP0020, \
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"Automatically link Qt executables to qtmain target on Windows.", 2, \
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8, 11, cmPolicies::WARN) \
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SELECT( \
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POLICY, CMP0021, \
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"Fatal error on relative paths in INCLUDE_DIRECTORIES target property.", \
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2, 8, 12, cmPolicies::WARN) \
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SELECT(POLICY, CMP0022, \
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"INTERFACE_LINK_LIBRARIES defines the link interface.", 2, 8, 12, \
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cmPolicies::WARN) \
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SELECT( \
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POLICY, CMP0023, \
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"Plain and keyword target_link_libraries signatures cannot be mixed.", 2, \
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8, 12, cmPolicies::WARN) \
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SELECT(POLICY, CMP0024, "Disallow include export result.", 3, 0, 0, \
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cmPolicies::WARN) \
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SELECT(POLICY, CMP0025, "Compiler id for Apple Clang is now AppleClang.", \
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3, 0, 0, cmPolicies::WARN) \
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SELECT(POLICY, CMP0026, "Disallow use of the LOCATION target property.", 3, \
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0, 0, cmPolicies::WARN) \
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SELECT(POLICY, CMP0027, \
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"Conditionally linked imported targets with missing include " \
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"directories.", \
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3, 0, 0, cmPolicies::WARN) \
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SELECT(POLICY, CMP0028, \
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"Double colon in target name means ALIAS or IMPORTED target.", 3, 0, \
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0, cmPolicies::WARN) \
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SELECT(POLICY, CMP0029, "The subdir_depends command should not be called.", \
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3, 0, 0, cmPolicies::WARN) \
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SELECT(POLICY, CMP0030, \
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"The use_mangled_mesa command should not be called.", 3, 0, 0, \
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cmPolicies::WARN) \
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SELECT(POLICY, CMP0031, "The load_command command should not be called.", \
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3, 0, 0, cmPolicies::WARN) \
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SELECT(POLICY, CMP0032, \
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"The output_required_files command should not be called.", 3, 0, 0, \
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cmPolicies::WARN) \
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SELECT(POLICY, CMP0033, \
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"The export_library_dependencies command should not be called.", 3, \
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0, 0, cmPolicies::WARN) \
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SELECT(POLICY, CMP0034, "The utility_source command should not be called.", \
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3, 0, 0, cmPolicies::WARN) \
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SELECT(POLICY, CMP0035, \
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"The variable_requires command should not be called.", 3, 0, 0, \
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cmPolicies::WARN) \
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SELECT(POLICY, CMP0036, "The build_name command should not be called.", 3, \
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0, 0, cmPolicies::WARN) \
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SELECT(POLICY, CMP0037, \
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"Target names should not be reserved and should match a validity " \
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"pattern.", \
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3, 0, 0, cmPolicies::WARN) \
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SELECT(POLICY, CMP0038, "Targets may not link directly to themselves.", 3, \
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0, 0, cmPolicies::WARN) \
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SELECT(POLICY, CMP0039, "Utility targets may not have link dependencies.", \
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3, 0, 0, cmPolicies::WARN) \
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SELECT(POLICY, CMP0040, \
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"The target in the TARGET signature of add_custom_command() must " \
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"exist and must be defined in the current directory.", \
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3, 0, 0, cmPolicies::WARN) \
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SELECT(POLICY, CMP0041, \
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"Error on relative include with generator expression.", 3, 0, 0, \
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cmPolicies::WARN) \
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SELECT(POLICY, CMP0042, "MACOSX_RPATH is enabled by default.", 3, 0, 0, \
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cmPolicies::WARN) \
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SELECT(POLICY, CMP0043, "Ignore COMPILE_DEFINITIONS_<Config> properties.", \
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3, 0, 0, cmPolicies::WARN) \
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SELECT(POLICY, CMP0044, \
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"Case sensitive <LANG>_COMPILER_ID generator expressions.", 3, 0, 0, \
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cmPolicies::WARN) \
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SELECT(POLICY, CMP0045, \
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"Error on non-existent target in get_target_property.", 3, 0, 0, \
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cmPolicies::WARN) \
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SELECT(POLICY, CMP0046, \
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"Error on non-existent dependency in add_dependencies.", 3, 0, 0, \
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cmPolicies::WARN) \
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SELECT(POLICY, CMP0047, "Use QCC compiler id for the qcc drivers on QNX.", \
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3, 0, 0, cmPolicies::WARN) \
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SELECT(POLICY, CMP0048, "project() command manages VERSION variables.", 3, \
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0, 0, cmPolicies::WARN) \
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SELECT(POLICY, CMP0049, \
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"Do not expand variables in target source entries.", 3, 0, 0, \
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cmPolicies::WARN) \
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SELECT(POLICY, CMP0050, "Disallow add_custom_command SOURCE signatures.", \
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3, 0, 0, cmPolicies::WARN) \
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SELECT(POLICY, CMP0051, "List TARGET_OBJECTS in SOURCES target property.", \
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3, 1, 0, cmPolicies::WARN) \
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SELECT(POLICY, CMP0052, \
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"Reject source and build dirs in installed " \
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"INTERFACE_INCLUDE_DIRECTORIES.", \
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3, 1, 0, cmPolicies::WARN) \
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SELECT(POLICY, CMP0053, \
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"Simplify variable reference and escape sequence evaluation.", 3, 1, \
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0, cmPolicies::WARN) \
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SELECT( \
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POLICY, CMP0054, \
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"Only interpret if() arguments as variables or keywords when unquoted.", \
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3, 1, 0, cmPolicies::WARN) \
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SELECT(POLICY, CMP0055, "Strict checking for break() command.", 3, 2, 0, \
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cmPolicies::WARN) \
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SELECT(POLICY, CMP0056, \
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"Honor link flags in try_compile() source-file signature.", 3, 2, 0, \
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cmPolicies::WARN) \
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SELECT(POLICY, CMP0057, "Support new IN_LIST if() operator.", 3, 3, 0, \
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cmPolicies::WARN) \
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SELECT(POLICY, CMP0058, \
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"Ninja requires custom command byproducts to be explicit.", 3, 3, 0, \
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cmPolicies::WARN) \
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SELECT(POLICY, CMP0059, \
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"Do not treat DEFINITIONS as a built-in directory property.", 3, 3, \
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0, cmPolicies::WARN) \
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SELECT(POLICY, CMP0060, \
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"Link libraries by full path even in implicit directories.", 3, 3, \
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0, cmPolicies::WARN) \
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SELECT(POLICY, CMP0061, \
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"CTest does not by default tell make to ignore errors (-i).", 3, 3, \
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0, cmPolicies::WARN) \
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SELECT(POLICY, CMP0062, "Disallow install() of export() result.", 3, 3, 0, \
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cmPolicies::WARN) \
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SELECT(POLICY, CMP0063, \
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"Honor visibility properties for all target types.", 3, 3, 0, \
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cmPolicies::WARN) \
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SELECT(POLICY, CMP0064, "Support new TEST if() operator.", 3, 4, 0, \
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cmPolicies::WARN) \
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SELECT(POLICY, CMP0065, \
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"Do not add flags to export symbols from executables without " \
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"the ENABLE_EXPORTS target property.", \
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3, 4, 0, cmPolicies::WARN) \
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SELECT(POLICY, CMP0066, \
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"Honor per-config flags in try_compile() source-file signature.", 3, \
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7, 0, cmPolicies::WARN) \
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SELECT(POLICY, CMP0067, \
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"Honor language standard in try_compile() source-file signature.", \
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3, 8, 0, cmPolicies::WARN) \
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SELECT(POLICY, CMP0068, \
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"RPATH settings on macOS do not affect install_name.", 3, 9, 0, \
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cmPolicies::WARN) \
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SELECT(POLICY, CMP0069, \
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"INTERPROCEDURAL_OPTIMIZATION is enforced when enabled.", 3, 9, 0, \
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cmPolicies::WARN) \
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SELECT(POLICY, CMP0070, \
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"Define file(GENERATE) behavior for relative paths.", 3, 10, 0, \
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cmPolicies::WARN) \
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SELECT(POLICY, CMP0071, "Let AUTOMOC and AUTOUIC process GENERATED files.", \
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3, 10, 0, cmPolicies::WARN) \
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SELECT(POLICY, CMP0072, \
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"FindOpenGL prefers GLVND by default when available.", 3, 11, 0, \
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cmPolicies::WARN) \
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SELECT(POLICY, CMP0073, \
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"Do not produce legacy _LIB_DEPENDS cache entries.", 3, 12, 0, \
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cmPolicies::WARN) \
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SELECT(POLICY, CMP0074, "find_package uses <PackageName>_ROOT variables.", \
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3, 12, 0, cmPolicies::WARN) \
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SELECT(POLICY, CMP0075, \
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"Include file check macros honor CMAKE_REQUIRED_LIBRARIES.", 3, 12, \
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0, cmPolicies::WARN) \
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SELECT(POLICY, CMP0076, \
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"target_sources() command converts relative paths to absolute.", 3, \
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13, 0, cmPolicies::WARN) \
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SELECT(POLICY, CMP0077, "option() honors normal variables.", 3, 13, 0, \
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cmPolicies::WARN) \
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SELECT(POLICY, CMP0078, "UseSWIG generates standard target names.", 3, 13, \
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0, cmPolicies::WARN) \
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SELECT( \
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POLICY, CMP0079, \
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"target_link_libraries allows use with targets in other directories.", 3, \
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13, 0, cmPolicies::WARN) \
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SELECT(POLICY, CMP0080, \
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"BundleUtilities cannot be included at configure time.", 3, 13, 0, \
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cmPolicies::WARN) \
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SELECT(POLICY, CMP0081, \
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"Relative paths not allowed in LINK_DIRECTORIES target property.", \
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3, 13, 0, cmPolicies::WARN) \
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SELECT(POLICY, CMP0082, \
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"Install rules from add_subdirectory() are interleaved with those " \
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"in caller.", \
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3, 14, 0, cmPolicies::WARN) \
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SELECT(POLICY, CMP0083, "Add PIE options when linking executable.", 3, 14, \
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0, cmPolicies::WARN) \
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SELECT(POLICY, CMP0084, \
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"The FindQt module does not exist for find_package().", 3, 14, 0, \
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cmPolicies::WARN) \
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SELECT(POLICY, CMP0085, "$<IN_LIST:...> handles empty list items.", 3, 14, \
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0, cmPolicies::WARN) \
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SELECT(POLICY, CMP0086, \
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"UseSWIG honors SWIG_MODULE_NAME via -module flag.", 3, 14, 0, \
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cmPolicies::WARN) \
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SELECT(POLICY, CMP0087, \
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"Install CODE|SCRIPT allow the use of generator " \
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"expressions.", \
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3, 14, 0, cmPolicies::WARN) \
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SELECT(POLICY, CMP0088, \
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"FindBISON runs bison in CMAKE_CURRENT_BINARY_DIR when executing.", \
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3, 14, 0, cmPolicies::WARN) \
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SELECT(POLICY, CMP0089, \
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"Compiler id for IBM Clang-based XL compilers is now XLClang.", 3, \
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15, 0, cmPolicies::WARN) \
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SELECT(POLICY, CMP0090, \
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"export(PACKAGE) does not populate package registry by default.", 3, \
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15, 0, cmPolicies::WARN) \
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SELECT(POLICY, CMP0091, \
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"MSVC runtime library flags are selected by an abstraction.", 3, 15, \
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0, cmPolicies::WARN) \
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SELECT(POLICY, CMP0092, \
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"MSVC warning flags are not in CMAKE_<LANG>_FLAGS by default.", 3, \
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15, 0, cmPolicies::WARN) \
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SELECT(POLICY, CMP0093, "FindBoost reports Boost_VERSION in x.y.z format.", \
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3, 15, 0, cmPolicies::WARN) \
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SELECT(POLICY, CMP0094, \
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"FindPython3, FindPython2 and FindPyton use " \
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"LOCATION for lookup strategy.", \
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3, 15, 0, cmPolicies::WARN) \
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SELECT(POLICY, CMP0095, \
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"RPATH entries are properly escaped in the intermediary CMake " \
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"install script.", \
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3, 16, 0, cmPolicies::WARN) \
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SELECT(POLICY, CMP0096, \
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"project() preserves leading zeros in version components.", 3, 16, \
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0, cmPolicies::WARN) \
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SELECT(POLICY, CMP0097, \
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"ExternalProject_Add with GIT_SUBMODULES \"\" initializes no " \
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"submodules.", \
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3, 16, 0, cmPolicies::WARN) \
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SELECT(POLICY, CMP0098, \
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"FindFLEX runs flex in CMAKE_CURRENT_BINARY_DIR when executing.", 3, \
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17, 0, cmPolicies::WARN) \
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SELECT(POLICY, CMP0099, \
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"Link properties are transitive over private dependency on static " \
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"libraries.", \
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3, 17, 0, cmPolicies::WARN) \
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SELECT(POLICY, CMP0100, "Let AUTOMOC and AUTOUIC process .hh files.", 3, \
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17, 0, cmPolicies::WARN) \
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SELECT(POLICY, CMP0101, \
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"target_compile_options honors BEFORE keyword in all scopes.", 3, \
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17, 0, cmPolicies::WARN) \
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SELECT(POLICY, CMP0102, \
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"mark_as_advanced() does nothing if a cache entry does not exist.", \
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3, 17, 0, cmPolicies::WARN) \
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SELECT(POLICY, CMP0103, \
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"Multiple export() with same FILE without APPEND is not allowed.", \
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3, 18, 0, cmPolicies::WARN) \
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SELECT(POLICY, CMP0104, \
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"CMAKE_CUDA_ARCHITECTURES now detected for NVCC, empty " \
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"CUDA_ARCHITECTURES not allowed.", \
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3, 18, 0, cmPolicies::WARN) \
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SELECT(POLICY, CMP0105, "Device link step uses the link options.", 3, 18, \
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0, cmPolicies::WARN) \
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SELECT(POLICY, CMP0106, "The Documentation module is removed.", 3, 18, 0, \
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cmPolicies::WARN) \
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SELECT(POLICY, CMP0107, "An ALIAS target cannot overwrite another target.", \
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3, 18, 0, cmPolicies::WARN) \
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SELECT(POLICY, CMP0108, "A target cannot link to itself through an alias.", \
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3, 18, 0, cmPolicies::WARN) \
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SELECT(POLICY, CMP0109, \
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"find_program() requires permission to execute but not to read.", 3, \
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19, 0, cmPolicies::WARN) \
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SELECT(POLICY, CMP0110, \
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"add_test() supports arbitrary characters in test names.", 3, 19, 0, \
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cmPolicies::WARN) \
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SELECT(POLICY, CMP0111, \
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"An imported target with a missing location fails during " \
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"generation.", \
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3, 19, 0, cmPolicies::WARN) \
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SELECT(POLICY, CMP0112, \
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"Target file component generator expressions do not add target " \
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"dependencies.", \
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3, 19, 0, cmPolicies::WARN) \
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SELECT(POLICY, CMP0113, \
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"Makefile generators do not repeat custom commands from target " \
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"dependencies.", \
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3, 19, 0, cmPolicies::WARN) \
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SELECT(POLICY, CMP0114, \
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"ExternalProject step targets fully adopt their steps.", 3, 19, 0, \
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cmPolicies::WARN)
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#define CM_SELECT_ID(F, A1, A2, A3, A4, A5, A6) F(A1)
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#define CM_FOR_EACH_POLICY_ID(POLICY) \
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CM_FOR_EACH_POLICY_TABLE(POLICY, CM_SELECT_ID)
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#define CM_FOR_EACH_TARGET_POLICY(F) \
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F(CMP0003) \
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F(CMP0004) \
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F(CMP0008) \
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F(CMP0020) \
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F(CMP0021) \
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F(CMP0022) \
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F(CMP0027) \
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F(CMP0037) \
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F(CMP0038) \
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F(CMP0041) \
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F(CMP0042) \
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F(CMP0046) \
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F(CMP0052) \
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F(CMP0060) \
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F(CMP0063) \
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F(CMP0065) \
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F(CMP0068) \
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F(CMP0069) \
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F(CMP0073) \
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F(CMP0076) \
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F(CMP0081) \
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F(CMP0083) \
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F(CMP0095) \
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F(CMP0099) \
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F(CMP0104) \
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F(CMP0105) \
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F(CMP0108) \
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F(CMP0112) \
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F(CMP0113)
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|
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/** \class cmPolicies
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* \brief Handles changes in CMake behavior and policies
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*
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* See the cmake-policies(7) manual for an overview of this class's purpose.
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*/
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class cmPolicies
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{
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public:
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|
/// Status of a policy
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|
enum PolicyStatus
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|
{
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|
OLD, ///< Use old behavior
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|
WARN, ///< Use old behavior but issue a warning
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|
NEW, ///< Use new behavior
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|
/// Issue an error if user doesn't set policy status to NEW and hits the
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|
/// check
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|
REQUIRED_IF_USED,
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|
REQUIRED_ALWAYS ///< Issue an error unless user sets policy status to NEW.
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|
};
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|
|
|
/// Policy identifiers
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|
enum PolicyID
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|
{
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|
#define POLICY_ENUM(POLICY_ID) POLICY_ID,
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|
CM_FOR_EACH_POLICY_ID(POLICY_ENUM)
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|
#undef POLICY_ENUM
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|
|
|
/** \brief Always the last entry.
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|
*
|
|
* Useful mostly to avoid adding a comma the last policy when adding a new
|
|
* one.
|
|
*/
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|
CMPCOUNT
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|
};
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|
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|
//! convert a string policy ID into a number
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|
static bool GetPolicyID(const char* id, /* out */ cmPolicies::PolicyID& pid);
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|
|
|
//! Get the default status for a policy
|
|
static cmPolicies::PolicyStatus GetPolicyStatus(cmPolicies::PolicyID id);
|
|
|
|
enum class WarnCompat
|
|
{
|
|
Off,
|
|
On
|
|
};
|
|
|
|
//! Set a policy level for this listfile
|
|
static bool ApplyPolicyVersion(cmMakefile* mf,
|
|
std::string const& version_min,
|
|
std::string const& version_max,
|
|
WarnCompat warnCompat);
|
|
static bool ApplyPolicyVersion(cmMakefile* mf, unsigned int majorVer,
|
|
unsigned int minorVer, unsigned int patchVer,
|
|
WarnCompat warnCompat);
|
|
|
|
//! return a warning string for a given policy
|
|
static std::string GetPolicyWarning(cmPolicies::PolicyID id);
|
|
static std::string GetPolicyDeprecatedWarning(cmPolicies::PolicyID id);
|
|
|
|
//! return an error string for when a required policy is unspecified
|
|
static std::string GetRequiredPolicyError(cmPolicies::PolicyID id);
|
|
|
|
//! return an error string for when a required policy is unspecified
|
|
static std::string GetRequiredAlwaysPolicyError(cmPolicies::PolicyID id);
|
|
|
|
/** Represent a set of policy values. */
|
|
struct PolicyMap
|
|
{
|
|
PolicyStatus Get(PolicyID id) const;
|
|
void Set(PolicyID id, PolicyStatus status);
|
|
bool IsDefined(PolicyID id) const;
|
|
bool IsEmpty() const;
|
|
|
|
private:
|
|
#define POLICY_STATUS_COUNT 3
|
|
std::bitset<cmPolicies::CMPCOUNT * POLICY_STATUS_COUNT> Status;
|
|
};
|
|
};
|