https://github.com/Kitware/CMake
Tip revision: 25d2850c190ba915a7527a29dda6efe61be901f0 authored by Brad King on 21 March 2024, 13:32:22 UTC
CMake 3.29.0
CMake 3.29.0
Tip revision: 25d2850
cmRemoveCommand.cxx
/* Distributed under the OSI-approved BSD 3-Clause License. See accompanying
file Copyright.txt or https://cmake.org/licensing for details. */
#include "cmRemoveCommand.h"
#include "cmExecutionStatus.h"
#include "cmList.h"
#include "cmMakefile.h"
#include "cmValue.h"
// cmRemoveCommand
bool cmRemoveCommand(std::vector<std::string> const& args,
cmExecutionStatus& status)
{
if (args.empty()) {
return true;
}
std::string const& variable = args[0]; // VAR is always first
// get the old value
cmValue cacheValue = status.GetMakefile().GetDefinition(variable);
// if there is no old value then return
if (!cacheValue) {
return true;
}
// expand the variable
cmList const varArgsExpanded{ *cacheValue };
// expand the args
// check for REMOVE(VAR v1 v2 ... vn)
cmList const argsExpanded{ args.begin() + 1, args.end() };
// now create the new value
std::string value;
for (std::string const& varArgExpanded : varArgsExpanded) {
int found = 0;
for (std::string const& argExpanded : argsExpanded) {
if (varArgExpanded == argExpanded) {
found = 1;
break;
}
}
if (!found) {
if (!value.empty()) {
value += ";";
}
value += varArgExpanded;
}
}
// add the definition
status.GetMakefile().AddDefinition(variable, value);
return true;
}