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/* Distributed under the OSI-approved BSD 3-Clause License. See accompanying
file Copyright.txt or https://cmake.org/licensing for details. */
#include "cmVariableRequiresCommand.h"
#include "cmExecutionStatus.h"
#include "cmMakefile.h"
#include "cmState.h"
#include "cmStringAlgorithms.h"
#include "cmSystemTools.h"
// cmLibraryCommand
bool cmVariableRequiresCommand(std::vector<std::string> const& args,
cmExecutionStatus& status)
{
if (args.size() < 3) {
status.SetError("called with incorrect number of arguments");
return false;
}
std::string const& testVariable = args[0];
if (!status.GetMakefile().IsOn(testVariable)) {
return true;
}
std::string const& resultVariable = args[1];
bool requirementsMet = true;
std::string notSet;
bool hasAdvanced = false;
cmState* state = status.GetMakefile().GetState();
for (unsigned int i = 2; i < args.size(); ++i) {
if (!status.GetMakefile().IsOn(args[i])) {
requirementsMet = false;
notSet += args[i];
notSet += "\n";
if (state->GetCacheEntryValue(args[i]) &&
state->GetCacheEntryPropertyAsBool(args[i], "ADVANCED")) {
hasAdvanced = true;
}
}
}
const char* reqVar = status.GetMakefile().GetDefinition(resultVariable);
// if reqVar is unset, then set it to requirementsMet
// if reqVar is set to true, but requirementsMet is false , then
// set reqVar to false.
if (!reqVar || (!requirementsMet && status.GetMakefile().IsOn(reqVar))) {
status.GetMakefile().AddDefinitionBool(resultVariable, requirementsMet);
}
if (!requirementsMet) {
std::string message =
cmStrCat("Variable assertion failed:\n", testVariable,
" Requires that the following unset variables are set:\n",
notSet, "\nPlease set them, or set ", testVariable,
" to false, and re-configure.\n");
if (hasAdvanced) {
message +=
"One or more of the required variables is advanced."
" To set the variable, you must turn on advanced mode in cmake.";
}
cmSystemTools::Error(message);
}
return true;
}
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