CMake/Source/cmExportTryCompileFileGenerator.cxx
Brad King f35be59961 Fix transitive usage requirements through same-name imported targets
If two imported targets in different directories have the same name we
should still be able to propagate transitive usage requirements from
both.  Fix the DAG checker to work with target pointers instead of
target names since the pointers will not be duplicated even if the names
are.

Fixes: #18345
2018-09-10 07:51:44 -04:00

131 lines
4.1 KiB
C++

/* Distributed under the OSI-approved BSD 3-Clause License. See accompanying
file Copyright.txt or https://cmake.org/licensing for details. */
#include "cmExportTryCompileFileGenerator.h"
#include "cmGeneratorExpression.h"
#include "cmGeneratorExpressionDAGChecker.h"
#include "cmGeneratorTarget.h"
#include "cmGlobalGenerator.h"
#include "cmLocalGenerator.h"
#include "cmMakefile.h"
#include "cmStateTypes.h"
#include "cmSystemTools.h"
#include "cmTarget.h"
#include <map>
#include <memory> // IWYU pragma: keep
#include <utility>
cmExportTryCompileFileGenerator::cmExportTryCompileFileGenerator(
cmGlobalGenerator* gg, const std::vector<std::string>& targets,
cmMakefile* mf, std::set<std::string> const& langs)
: Languages(langs.begin(), langs.end())
{
gg->CreateImportedGenerationObjects(mf, targets, this->Exports);
}
bool cmExportTryCompileFileGenerator::GenerateMainFile(std::ostream& os)
{
std::set<cmGeneratorTarget const*> emitted;
std::set<cmGeneratorTarget const*> emittedDeps;
while (!this->Exports.empty()) {
cmGeneratorTarget const* te = this->Exports.back();
this->Exports.pop_back();
if (emitted.insert(te).second) {
emittedDeps.insert(te);
this->GenerateImportTargetCode(os, te, te->GetType());
ImportPropertyMap properties;
for (std::string const& lang : this->Languages) {
#define FIND_TARGETS(PROPERTY) \
this->FindTargets("INTERFACE_" #PROPERTY, te, lang, emittedDeps);
CM_FOR_EACH_TRANSITIVE_PROPERTY_NAME(FIND_TARGETS)
#undef FIND_TARGETS
}
this->PopulateProperties(te, properties, emittedDeps);
this->GenerateInterfaceProperties(te, os, properties);
}
}
return true;
}
std::string cmExportTryCompileFileGenerator::FindTargets(
const std::string& propName, cmGeneratorTarget const* tgt,
std::string const& language, std::set<cmGeneratorTarget const*>& emitted)
{
const char* prop = tgt->GetProperty(propName);
if (!prop) {
return std::string();
}
cmGeneratorExpression ge;
cmGeneratorExpressionDAGChecker dagChecker(tgt, propName, nullptr, nullptr);
std::unique_ptr<cmCompiledGeneratorExpression> cge = ge.Parse(prop);
cmTarget dummyHead("try_compile_dummy_exe", cmStateEnums::EXECUTABLE,
cmTarget::VisibilityNormal, tgt->Target->GetMakefile());
cmGeneratorTarget gDummyHead(&dummyHead, tgt->GetLocalGenerator());
std::string result =
cge->Evaluate(tgt->GetLocalGenerator(), this->Config, false, &gDummyHead,
tgt, &dagChecker, language);
const std::set<cmGeneratorTarget const*>& allTargets =
cge->GetAllTargetsSeen();
for (cmGeneratorTarget const* target : allTargets) {
if (emitted.insert(target).second) {
this->Exports.push_back(target);
}
}
return result;
}
void cmExportTryCompileFileGenerator::PopulateProperties(
const cmGeneratorTarget* target, ImportPropertyMap& properties,
std::set<cmGeneratorTarget const*>& emitted)
{
std::vector<std::string> props = target->GetPropertyKeys();
for (std::string const& p : props) {
properties[p] = target->GetProperty(p);
if (p.find("IMPORTED_LINK_INTERFACE_LIBRARIES") == 0 ||
p.find("IMPORTED_LINK_DEPENDENT_LIBRARIES") == 0 ||
p.find("INTERFACE_LINK_LIBRARIES") == 0) {
std::string evalResult =
this->FindTargets(p, target, std::string(), emitted);
std::vector<std::string> depends;
cmSystemTools::ExpandListArgument(evalResult, depends);
for (std::string const& li : depends) {
cmGeneratorTarget* tgt =
target->GetLocalGenerator()->FindGeneratorTargetToUse(li);
if (tgt && emitted.insert(tgt).second) {
this->Exports.push_back(tgt);
}
}
}
}
}
std::string cmExportTryCompileFileGenerator::InstallNameDir(
cmGeneratorTarget* target, const std::string& config)
{
std::string install_name_dir;
cmMakefile* mf = target->Target->GetMakefile();
if (mf->IsOn("CMAKE_PLATFORM_HAS_INSTALLNAME")) {
install_name_dir = target->GetInstallNameDirForBuildTree(config);
}
return install_name_dir;
}