mirror of
https://github.com/Kitware/CMake.git
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a7415d243a
Add and use a couple helper functions for issuing policy warnings. This improves consistency and allows some simplification of many call sites. (One or two instances in particular are greatly simplified.)
581 lines
18 KiB
C++
581 lines
18 KiB
C++
/* Distributed under the OSI-approved BSD 3-Clause License. See accompanying
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file LICENSE.rst or https://cmake.org/licensing for details. */
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#include "cmAddCustomCommandCommand.h"
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#include <algorithm>
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#include <iterator>
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#include <set>
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#include <unordered_set>
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#include <utility>
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#include <cm/memory>
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#include <cmext/string_view>
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#include "cmCustomCommand.h"
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#include "cmCustomCommandLines.h"
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#include "cmCustomCommandTypes.h"
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#include "cmExecutionStatus.h"
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#include "cmGeneratorExpression.h"
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#include "cmGlobalGenerator.h"
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#include "cmMakefile.h"
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#include "cmMessageType.h"
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#include "cmPolicies.h"
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#include "cmStringAlgorithms.h"
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#include "cmSystemTools.h"
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#include "cmValue.h"
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bool cmAddCustomCommandCommand(std::vector<std::string> const& args,
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cmExecutionStatus& status)
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{
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/* Let's complain at the end of this function about the lack of a particular
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arg. For the moment, let's say that COMMAND, and either TARGET or SOURCE
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are required.
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*/
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if (args.size() < 4) {
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status.SetError("called with wrong number of arguments.");
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return false;
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}
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cmMakefile& mf = status.GetMakefile();
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std::string source;
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std::string target;
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std::string main_dependency;
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std::string working;
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std::string depfile;
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std::string job_pool;
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std::string job_server_aware;
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std::string comment_buffer;
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char const* comment = nullptr;
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std::vector<std::string> depends;
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std::vector<std::string> outputs;
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std::vector<std::string> output;
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std::vector<std::string> byproducts;
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bool verbatim = false;
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bool append = false;
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bool uses_terminal = false;
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bool command_expand_lists = false;
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bool depends_explicit_only =
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mf.IsOn("CMAKE_ADD_CUSTOM_COMMAND_DEPENDS_EXPLICIT_ONLY");
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bool codegen = false;
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std::string implicit_depends_lang;
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cmImplicitDependsList implicit_depends;
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// Accumulate one command line at a time.
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cmCustomCommandLine currentLine;
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// Save all command lines.
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cmCustomCommandLines commandLines;
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cmCustomCommandType cctype = cmCustomCommandType::POST_BUILD;
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enum tdoing
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{
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doing_source,
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doing_command,
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doing_target,
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doing_depends,
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doing_implicit_depends_lang,
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doing_implicit_depends_file,
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doing_main_dependency,
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doing_output,
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doing_outputs,
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doing_byproducts,
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doing_comment,
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doing_working_directory,
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doing_depfile,
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doing_job_pool,
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doing_job_server_aware,
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doing_nothing
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};
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tdoing doing = doing_nothing;
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#define MAKE_STATIC_KEYWORD(KEYWORD) \
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static const std::string key##KEYWORD = #KEYWORD
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MAKE_STATIC_KEYWORD(APPEND);
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MAKE_STATIC_KEYWORD(ARGS);
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MAKE_STATIC_KEYWORD(BYPRODUCTS);
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MAKE_STATIC_KEYWORD(COMMAND);
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MAKE_STATIC_KEYWORD(COMMAND_EXPAND_LISTS);
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MAKE_STATIC_KEYWORD(COMMENT);
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MAKE_STATIC_KEYWORD(DEPENDS);
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MAKE_STATIC_KEYWORD(DEPFILE);
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MAKE_STATIC_KEYWORD(IMPLICIT_DEPENDS);
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MAKE_STATIC_KEYWORD(JOB_POOL);
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MAKE_STATIC_KEYWORD(JOB_SERVER_AWARE);
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MAKE_STATIC_KEYWORD(MAIN_DEPENDENCY);
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MAKE_STATIC_KEYWORD(OUTPUT);
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MAKE_STATIC_KEYWORD(OUTPUTS);
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MAKE_STATIC_KEYWORD(POST_BUILD);
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MAKE_STATIC_KEYWORD(PRE_BUILD);
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MAKE_STATIC_KEYWORD(PRE_LINK);
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MAKE_STATIC_KEYWORD(SOURCE);
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MAKE_STATIC_KEYWORD(TARGET);
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MAKE_STATIC_KEYWORD(USES_TERMINAL);
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MAKE_STATIC_KEYWORD(VERBATIM);
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MAKE_STATIC_KEYWORD(WORKING_DIRECTORY);
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MAKE_STATIC_KEYWORD(DEPENDS_EXPLICIT_ONLY);
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MAKE_STATIC_KEYWORD(CODEGEN);
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#undef MAKE_STATIC_KEYWORD
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static std::unordered_set<std::string> const keywords{
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keyAPPEND,
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keyARGS,
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keyBYPRODUCTS,
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keyCOMMAND,
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keyCOMMAND_EXPAND_LISTS,
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keyCOMMENT,
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keyDEPENDS,
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keyDEPFILE,
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keyIMPLICIT_DEPENDS,
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keyJOB_POOL,
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keyMAIN_DEPENDENCY,
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keyOUTPUT,
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keyOUTPUTS,
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keyPOST_BUILD,
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keyPRE_BUILD,
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keyPRE_LINK,
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keySOURCE,
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keyJOB_SERVER_AWARE,
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keyTARGET,
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keyUSES_TERMINAL,
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keyVERBATIM,
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keyWORKING_DIRECTORY,
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keyDEPENDS_EXPLICIT_ONLY,
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keyCODEGEN
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};
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/* clang-format off */
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static std::set<std::string> const supportedTargetKeywords{
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keyARGS,
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keyBYPRODUCTS,
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keyCOMMAND,
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keyCOMMAND_EXPAND_LISTS,
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keyCOMMENT,
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keyPOST_BUILD,
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keyPRE_BUILD,
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keyPRE_LINK,
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keyTARGET,
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keyUSES_TERMINAL,
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keyVERBATIM,
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keyWORKING_DIRECTORY
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};
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/* clang-format on */
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static std::set<std::string> const supportedOutputKeywords{
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keyAPPEND,
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keyARGS,
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keyBYPRODUCTS,
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keyCODEGEN,
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keyCOMMAND,
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keyCOMMAND_EXPAND_LISTS,
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keyCOMMENT,
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keyDEPENDS,
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keyDEPENDS_EXPLICIT_ONLY,
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keyDEPFILE,
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keyIMPLICIT_DEPENDS,
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keyJOB_POOL,
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keyJOB_SERVER_AWARE,
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keyMAIN_DEPENDENCY,
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keyOUTPUT,
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keyUSES_TERMINAL,
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keyVERBATIM,
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keyWORKING_DIRECTORY
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};
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/* clang-format off */
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static std::set<std::string> const supportedAppendKeywords{
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keyAPPEND,
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keyARGS,
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keyCOMMAND,
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keyCOMMENT, // Allowed but ignored
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keyDEPENDS,
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keyIMPLICIT_DEPENDS,
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keyMAIN_DEPENDENCY, // Allowed but ignored
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keyOUTPUT,
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keyWORKING_DIRECTORY // Allowed but ignored
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};
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/* clang-format on */
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std::set<std::string> keywordsSeen;
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std::string const* keywordExpectingValue = nullptr;
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auto const cmp0175 = mf.GetPolicyStatus(cmPolicies::CMP0175);
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for (std::string const& copy : args) {
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if (keywords.count(copy)) {
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// Check if a preceding keyword expected a value but there wasn't one
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if (keywordExpectingValue) {
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std::string const msg =
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cmStrCat("Keyword ", *keywordExpectingValue,
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" requires a value, but none was given.");
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if (cmp0175 == cmPolicies::NEW) {
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mf.IssueMessage(MessageType::FATAL_ERROR, msg);
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return false;
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}
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if (cmp0175 == cmPolicies::WARN) {
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mf.IssuePolicyWarning(cmPolicies::CMP0175, msg);
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}
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}
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keywordExpectingValue = nullptr;
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keywordsSeen.insert(copy);
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if (copy == keySOURCE) {
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doing = doing_source;
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keywordExpectingValue = &keySOURCE;
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} else if (copy == keyCOMMAND) {
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doing = doing_command;
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// Save the current command before starting the next command.
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if (!currentLine.empty()) {
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commandLines.push_back(currentLine);
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currentLine.clear();
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}
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} else if (copy == keyPRE_BUILD) {
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cctype = cmCustomCommandType::PRE_BUILD;
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} else if (copy == keyPRE_LINK) {
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cctype = cmCustomCommandType::PRE_LINK;
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} else if (copy == keyPOST_BUILD) {
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cctype = cmCustomCommandType::POST_BUILD;
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} else if (copy == keyVERBATIM) {
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verbatim = true;
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} else if (copy == keyAPPEND) {
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append = true;
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} else if (copy == keyUSES_TERMINAL) {
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uses_terminal = true;
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} else if (copy == keyCOMMAND_EXPAND_LISTS) {
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command_expand_lists = true;
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} else if (copy == keyDEPENDS_EXPLICIT_ONLY) {
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depends_explicit_only = true;
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} else if (copy == keyCODEGEN) {
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codegen = true;
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} else if (copy == keyTARGET) {
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doing = doing_target;
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keywordExpectingValue = &keyTARGET;
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} else if (copy == keyARGS) {
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// Ignore this old keyword.
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} else if (copy == keyDEPENDS) {
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doing = doing_depends;
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} else if (copy == keyOUTPUTS) {
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doing = doing_outputs;
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} else if (copy == keyOUTPUT) {
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doing = doing_output;
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keywordExpectingValue = &keyOUTPUT;
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} else if (copy == keyBYPRODUCTS) {
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doing = doing_byproducts;
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} else if (copy == keyWORKING_DIRECTORY) {
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doing = doing_working_directory;
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keywordExpectingValue = &keyWORKING_DIRECTORY;
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} else if (copy == keyMAIN_DEPENDENCY) {
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doing = doing_main_dependency;
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keywordExpectingValue = &keyMAIN_DEPENDENCY;
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} else if (copy == keyIMPLICIT_DEPENDS) {
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doing = doing_implicit_depends_lang;
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} else if (copy == keyCOMMENT) {
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doing = doing_comment;
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keywordExpectingValue = &keyCOMMENT;
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} else if (copy == keyDEPFILE) {
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doing = doing_depfile;
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if (!mf.GetGlobalGenerator()->SupportsCustomCommandDepfile()) {
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status.SetError(cmStrCat("Option DEPFILE not supported by ",
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mf.GetGlobalGenerator()->GetName()));
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return false;
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}
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keywordExpectingValue = &keyDEPFILE;
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} else if (copy == keyJOB_POOL) {
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doing = doing_job_pool;
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keywordExpectingValue = &keyJOB_POOL;
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} else if (copy == keyJOB_SERVER_AWARE) {
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doing = doing_job_server_aware;
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keywordExpectingValue = &keyJOB_SERVER_AWARE;
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}
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} else {
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keywordExpectingValue = nullptr; // Value is being processed now
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std::string filename;
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switch (doing) {
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case doing_output:
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case doing_outputs:
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case doing_byproducts:
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if (!cmSystemTools::FileIsFullPath(copy) &&
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cmGeneratorExpression::Find(copy) != 0) {
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// This is an output to be generated, so it should be
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// under the build tree.
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filename = cmStrCat(mf.GetCurrentBinaryDirectory(), '/');
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}
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filename += copy;
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cmSystemTools::ConvertToUnixSlashes(filename);
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break;
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case doing_source:
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// We do not want to convert the argument to SOURCE because
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// that option is only available for backward compatibility.
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// Old-style use of this command may use the SOURCE==TARGET
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// trick which we must preserve. If we convert the source
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// to a full path then it will no longer equal the target.
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default:
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break;
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}
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if (cmSystemTools::FileIsFullPath(filename)) {
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filename = cmSystemTools::CollapseFullPath(filename);
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}
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switch (doing) {
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case doing_depfile:
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depfile = copy;
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break;
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case doing_job_pool:
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job_pool = copy;
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break;
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case doing_job_server_aware:
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job_server_aware = copy;
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break;
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case doing_working_directory:
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working = copy;
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break;
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case doing_source:
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source = copy;
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break;
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case doing_output:
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output.push_back(filename);
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break;
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case doing_main_dependency:
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main_dependency = copy;
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break;
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case doing_implicit_depends_lang:
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implicit_depends_lang = copy;
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doing = doing_implicit_depends_file;
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break;
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case doing_implicit_depends_file: {
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// An implicit dependency starting point is also an
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// explicit dependency.
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std::string dep = copy;
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// Upfront path conversion is correct because Genex
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// are not supported.
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cmSystemTools::ConvertToUnixSlashes(dep);
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depends.push_back(dep);
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// Add the implicit dependency language and file.
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implicit_depends.emplace_back(implicit_depends_lang, dep);
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// Switch back to looking for a language.
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doing = doing_implicit_depends_lang;
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} break;
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case doing_command:
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currentLine.push_back(copy);
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break;
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case doing_target:
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target = copy;
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break;
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case doing_depends:
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depends.push_back(copy);
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break;
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case doing_outputs:
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outputs.push_back(filename);
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break;
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case doing_byproducts:
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byproducts.push_back(filename);
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break;
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case doing_comment:
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if (!comment_buffer.empty()) {
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std::string const msg =
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"COMMENT requires exactly one argument, but multiple values "
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"or COMMENT keywords have been given.";
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if (cmp0175 == cmPolicies::NEW) {
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mf.IssueMessage(MessageType::FATAL_ERROR, msg);
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return false;
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}
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if (cmp0175 == cmPolicies::WARN) {
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mf.IssuePolicyWarning(cmPolicies::CMP0175, msg);
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}
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}
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comment_buffer = copy;
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comment = comment_buffer.c_str();
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break;
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default:
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status.SetError("Wrong syntax. Unknown type of argument.");
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return false;
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}
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}
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}
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// Store the last command line finished.
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if (!currentLine.empty()) {
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commandLines.push_back(currentLine);
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currentLine.clear();
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}
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// At this point we could complain about the lack of arguments. For
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// the moment, let's say that COMMAND, TARGET are always required.
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if (output.empty() && target.empty()) {
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status.SetError("Wrong syntax. A TARGET or OUTPUT must be specified.");
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return false;
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}
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if (source.empty() && !target.empty() && !output.empty()) {
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status.SetError(
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"Wrong syntax. A TARGET and OUTPUT can not both be specified.");
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return false;
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}
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if (append && output.empty()) {
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status.SetError("given APPEND option with no OUTPUT.");
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return false;
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}
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if (!implicit_depends.empty() && !depfile.empty() &&
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mf.GetGlobalGenerator()->GetName() != "Ninja") {
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// Makefiles generators does not support both at the same time
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status.SetError("IMPLICIT_DEPENDS and DEPFILE can not both be specified.");
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return false;
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}
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if (codegen) {
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if (output.empty()) {
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status.SetError("CODEGEN requires at least 1 OUTPUT.");
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return false;
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}
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if (append) {
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status.SetError("CODEGEN may not be used with APPEND.");
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return false;
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}
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if (!implicit_depends.empty()) {
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status.SetError("CODEGEN is not compatible with IMPLICIT_DEPENDS.");
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return false;
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}
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if (mf.GetPolicyStatus(cmPolicies::CMP0171) != cmPolicies::NEW) {
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status.SetError("CODEGEN option requires policy CMP0171 be set to NEW!");
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return false;
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}
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}
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// Check for an append request.
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if (append) {
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std::vector<std::string> unsupportedKeywordsUsed;
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std::set_difference(keywordsSeen.begin(), keywordsSeen.end(),
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supportedAppendKeywords.begin(),
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supportedAppendKeywords.end(),
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std::back_inserter(unsupportedKeywordsUsed));
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if (!unsupportedKeywordsUsed.empty()) {
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std::string const msg =
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cmJoin(unsupportedKeywordsUsed, ", "_s,
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"The following keywords are not supported when using "
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"APPEND with add_custom_command(OUTPUT): "_s);
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if (cmp0175 == cmPolicies::NEW) {
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mf.IssueMessage(MessageType::FATAL_ERROR, msg);
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return false;
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}
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if (cmp0175 == cmPolicies::WARN) {
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mf.IssuePolicyWarning(cmPolicies::CMP0175, cmStrCat(msg, '.'));
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}
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}
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mf.AppendCustomCommandToOutput(output[0], depends, implicit_depends,
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commandLines);
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return true;
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}
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if (uses_terminal && !job_pool.empty()) {
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status.SetError("JOB_POOL is shadowed by USES_TERMINAL.");
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return false;
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}
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// Choose which mode of the command to use.
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auto cc = cm::make_unique<cmCustomCommand>();
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cc->SetByproducts(byproducts);
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cc->SetCommandLines(commandLines);
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cc->SetComment(comment);
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cc->SetWorkingDirectory(working.c_str());
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cc->SetEscapeOldStyle(!verbatim);
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cc->SetUsesTerminal(uses_terminal);
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cc->SetDepfile(depfile);
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cc->SetJobPool(job_pool);
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cc->SetJobserverAware(cmIsOn(job_server_aware));
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cc->SetCommandExpandLists(command_expand_lists);
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cc->SetDependsExplicitOnly(depends_explicit_only);
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if (source.empty() && output.empty()) {
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// Source is empty, use the target.
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if (commandLines.empty()) {
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std::string const msg = "At least one COMMAND must be given.";
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if (cmp0175 == cmPolicies::NEW) {
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mf.IssueMessage(MessageType::FATAL_ERROR, msg);
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return false;
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}
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if (cmp0175 == cmPolicies::WARN) {
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mf.IssuePolicyWarning(cmPolicies::CMP0175, msg);
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}
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}
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std::vector<std::string> unsupportedKeywordsUsed;
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std::set_difference(keywordsSeen.begin(), keywordsSeen.end(),
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supportedTargetKeywords.begin(),
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supportedTargetKeywords.end(),
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std::back_inserter(unsupportedKeywordsUsed));
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if (!unsupportedKeywordsUsed.empty()) {
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std::string const msg =
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cmJoin(unsupportedKeywordsUsed, ", "_s,
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"The following keywords are not supported when using "
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"add_custom_command(TARGET): "_s);
|
|
if (cmp0175 == cmPolicies::NEW) {
|
|
mf.IssueMessage(MessageType::FATAL_ERROR, msg);
|
|
return false;
|
|
}
|
|
if (cmp0175 == cmPolicies::WARN) {
|
|
mf.IssuePolicyWarning(cmPolicies::CMP0175, cmStrCat(msg, '.'));
|
|
}
|
|
}
|
|
auto const prePostCount = keywordsSeen.count(keyPRE_BUILD) +
|
|
keywordsSeen.count(keyPRE_LINK) + keywordsSeen.count(keyPOST_BUILD);
|
|
if (prePostCount != 1) {
|
|
std::string msg =
|
|
"Exactly one of PRE_BUILD, PRE_LINK, or POST_BUILD must be given.";
|
|
if (cmp0175 == cmPolicies::NEW) {
|
|
mf.IssueMessage(MessageType::FATAL_ERROR, msg);
|
|
return false;
|
|
}
|
|
if (cmp0175 == cmPolicies::WARN) {
|
|
msg += " Assuming ";
|
|
switch (cctype) {
|
|
case cmCustomCommandType::PRE_BUILD:
|
|
msg += "PRE_BUILD";
|
|
break;
|
|
case cmCustomCommandType::PRE_LINK:
|
|
msg += "PRE_LINK";
|
|
break;
|
|
case cmCustomCommandType::POST_BUILD:
|
|
msg += "POST_BUILD";
|
|
}
|
|
mf.IssuePolicyWarning(
|
|
cmPolicies::CMP0175,
|
|
cmStrCat(msg, " to preserve backward compatibility."_s));
|
|
}
|
|
}
|
|
mf.AddCustomCommandToTarget(target, cctype, std::move(cc));
|
|
} else if (target.empty()) {
|
|
// Target is empty, use the output.
|
|
std::vector<std::string> unsupportedKeywordsUsed;
|
|
std::set_difference(keywordsSeen.begin(), keywordsSeen.end(),
|
|
supportedOutputKeywords.begin(),
|
|
supportedOutputKeywords.end(),
|
|
std::back_inserter(unsupportedKeywordsUsed));
|
|
if (!unsupportedKeywordsUsed.empty()) {
|
|
std::string const msg =
|
|
cmJoin(unsupportedKeywordsUsed, ", "_s,
|
|
"The following keywords are not supported when using "
|
|
"add_custom_command(OUTPUT): "_s);
|
|
if (cmp0175 == cmPolicies::NEW) {
|
|
mf.IssueMessage(MessageType::FATAL_ERROR, msg);
|
|
return false;
|
|
}
|
|
if (cmp0175 == cmPolicies::WARN) {
|
|
mf.IssuePolicyWarning(cmPolicies::CMP0175, cmStrCat(msg, '.'));
|
|
}
|
|
}
|
|
cc->SetOutputs(output);
|
|
cc->SetMainDependency(main_dependency);
|
|
cc->SetDepends(depends);
|
|
cc->SetCodegen(codegen);
|
|
cc->SetImplicitDepends(implicit_depends);
|
|
mf.AddCustomCommandToOutput(std::move(cc));
|
|
} else {
|
|
mf.IssueMessage(
|
|
MessageType::FATAL_ERROR,
|
|
"The SOURCE signatures of add_custom_command are no longer supported.");
|
|
return false;
|
|
}
|
|
|
|
return true;
|
|
}
|