48 bool CompatibilityMatrix::addKernel(MatrixKernel&& kernel, std::string* error) {  in addKernel()  argument
51             *error = "Cannot add <kernel> to a " + to_string(mType) + " compatibility matrix.";  in addKernel()
56     if (kernel.getSourceMatrixLevel() == Level::UNSPECIFIED) {  in addKernel()
57         kernel.setSourceMatrixLevel(level());  in addKernel()
62         if (it->getSourceMatrixLevel() != kernel.getSourceMatrixLevel()) {  in addKernel()
65         if (it->minLts() == kernel.minLts()) {  in addKernel()
68         if (it->minLts().dropMinor() == kernel.minLts().dropMinor()) {  in addKernel()
70                 *error = "Kernel version mismatch; for level " +  in addKernel()
71                          to_string(kernel.getSourceMatrixLevel()) + ", cannot add " +  in addKernel()
72                          to_string(kernel.minLts()) + " because " + to_string(it->minLts()) +  in addKernel()
83         // because O libvintf only checks the first <kernel> tag that version matches.  in addKernel()
84         if (kernel.conditions().empty()) {  in addKernel()
85             // Found first <kernel> with the same minLts.  in addKernel()
88                 const auto& configs = kernel.configs();  in addKernel()
93                         "Base compatibility matrix has <condition> for the first <kernel> "  in addKernel()
95                         to_string(kernel.minLts()) + " for unknown reason.";  in addKernel()
102         // First <kernel> of a minLts must not have <condition>'s for backwards compatibility  in addKernel()
104         if (!kernel.conditions().empty()) {  in addKernel()
105             framework.mKernels.push_back(MatrixKernel(KernelVersion{kernel.minLts()}, {}));  in addKernel()
109     framework.mKernels.push_back(std::move(kernel));  in addKernel()
270 // Merge Kernel. See KernelInfo::getMatchedKernelRequirements for details on compatibility checks.
272     for (MatrixKernel& kernel : other->framework.mKernels) {  in addAllKernels()
273         if (kernel.getSourceMatrixLevel() == Level::UNSPECIFIED) {  in addAllKernels()
274             kernel.setSourceMatrixLevel(other->level());  in addAllKernels()
276         KernelVersion ver = kernel.minLts();  in addAllKernels()
277         if (!addKernel(std::move(kernel), error)) {  in addAllKernels()
279                 *error = "Cannot add kernel version " + to_string(ver) + ": " + *error;  in addAllKernels()
356     // Add from low to high FCM version so that optional <kernel> requirements are added correctly.  in combine()