bdca8b01d2
#pragma once is a widely supported compiler pragma, even though it is not part of the C++ standard. Many of the issues keeping #pragma once from being standardized (distributed filesystems, build farms, hard links, etc.) do not apply to CMake - it is easy to build CMake on a single machine. CMake also does not install any header files which can be consumed by other projects (though cmCPluginAPI.h has been deliberately omitted from this conversion in case anyone is still using it.) Finally, #pragma once has been required to build CMake since at least August 2017 (7f29bbe6enabled server mode unconditionally, which had been using #pragma once since September 2016 (b13d3e0d)). The fact that we now require C++11 filters out old compilers, and it is unlikely that there is a compiler which supports C++11 but does not support #pragma once.
142 lines
4.0 KiB
C++
142 lines
4.0 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 <map>
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#include <ostream>
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#include <string>
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#include <vector>
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#include <cmext/algorithm>
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#include "cmListFileCache.h"
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#include "cmSystemTools.h"
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#include "cmTargetLinkLibraryType.h"
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class cmGeneratorTarget;
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// Basic information about each link item.
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class cmLinkItem
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{
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std::string String;
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public:
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cmLinkItem();
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cmLinkItem(std::string s, bool c, cmListFileBacktrace bt);
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cmLinkItem(cmGeneratorTarget const* t, bool c, cmListFileBacktrace bt);
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std::string const& AsStr() const;
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cmGeneratorTarget const* Target = nullptr;
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bool Cross = false;
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cmListFileBacktrace Backtrace;
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friend bool operator<(cmLinkItem const& l, cmLinkItem const& r);
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friend bool operator==(cmLinkItem const& l, cmLinkItem const& r);
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friend std::ostream& operator<<(std::ostream& os, cmLinkItem const& item);
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};
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class cmLinkImplItem : public cmLinkItem
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{
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public:
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cmLinkImplItem();
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cmLinkImplItem(cmLinkItem item, bool fromGenex);
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bool FromGenex = false;
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};
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/** The link implementation specifies the direct library
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dependencies needed by the object files of the target. */
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struct cmLinkImplementationLibraries
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{
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// Libraries linked directly in this configuration.
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std::vector<cmLinkImplItem> Libraries;
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// Libraries linked directly in other configurations.
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// Needed only for OLD behavior of CMP0003.
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std::vector<cmLinkItem> WrongConfigLibraries;
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// Whether the list depends on a genex referencing the configuration.
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bool HadContextSensitiveCondition = false;
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};
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struct cmLinkInterfaceLibraries
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{
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// Libraries listed in the interface.
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std::vector<cmLinkItem> Libraries;
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// Whether the list depends on a genex referencing the head target.
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bool HadHeadSensitiveCondition = false;
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// Whether the list depends on a genex referencing the configuration.
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bool HadContextSensitiveCondition = false;
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};
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struct cmLinkInterface : public cmLinkInterfaceLibraries
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{
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// Languages whose runtime libraries must be linked.
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std::vector<std::string> Languages;
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// Shared library dependencies needed for linking on some platforms.
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std::vector<cmLinkItem> SharedDeps;
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// Number of repetitions of a strongly connected component of two
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// or more static libraries.
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unsigned int Multiplicity = 0;
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// Libraries listed for other configurations.
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// Needed only for OLD behavior of CMP0003.
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std::vector<cmLinkItem> WrongConfigLibraries;
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bool ImplementationIsInterface = false;
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// Whether the list depends on a link language genex.
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bool HadLinkLanguageSensitiveCondition = false;
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};
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struct cmOptionalLinkInterface : public cmLinkInterface
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{
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bool LibrariesDone = false;
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bool AllDone = false;
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bool Exists = false;
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bool Explicit = false;
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};
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struct cmHeadToLinkInterfaceMap
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: public std::map<cmGeneratorTarget const*, cmOptionalLinkInterface>
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{
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};
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struct cmLinkImplementation : public cmLinkImplementationLibraries
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{
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// Languages whose runtime libraries must be linked.
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std::vector<std::string> Languages;
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// Whether the list depends on a link language genex.
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bool HadLinkLanguageSensitiveCondition = false;
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};
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// Cache link implementation computation from each configuration.
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struct cmOptionalLinkImplementation : public cmLinkImplementation
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{
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bool LibrariesDone = false;
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bool LanguagesDone = false;
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bool HadHeadSensitiveCondition = false;
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};
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/** Compute the link type to use for the given configuration. */
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inline cmTargetLinkLibraryType CMP0003_ComputeLinkType(
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const std::string& config, std::vector<std::string> const& debugConfigs)
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{
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// No configuration is always optimized.
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if (config.empty()) {
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return OPTIMIZED_LibraryType;
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}
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// Check if any entry in the list matches this configuration.
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std::string configUpper = cmSystemTools::UpperCase(config);
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if (cm::contains(debugConfigs, configUpper)) {
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return DEBUG_LibraryType;
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}
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// The current configuration is not a debug configuration.
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return OPTIMIZED_LibraryType;
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}
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