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d02eb3859f
This makes `config.tests/rocksdb` check if the library was compiled with USE_RTTI=1 by creating an instance of an `AssociativeMergeOperator` derived class. When rocksdb was compiled without RTTI this should produce ``` undefined reference to `typeinfo for rocksdb::AssociativeMergeOperator' ``` when running `qmake` in `config.log` and use the static library instead.
36 lines
1.2 KiB
C++
36 lines
1.2 KiB
C++
#include <array>
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#include <cstddef>
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#include <memory>
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#include <rocksdb/version.h>
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#include <rocksdb/merge_operator.h>
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constexpr int minimumVersion[] = {6, 6, 4};
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constexpr int version[] = {ROCKSDB_MAJOR, ROCKSDB_MINOR, ROCKSDB_PATCH};
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constexpr bool compareVersion(const int *version1, const int *version2, const size_t length)
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{
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for (size_t i = 0; i < length; i++) {
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if (version1[i] > version2[i]) {
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return true;
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} else if (version1[i] < version2[i]) {
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return false;
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}
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}
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return true;
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}
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static_assert(compareVersion(version, minimumVersion, std::size(version)));
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// If this causes an "undefined reference to `typeinfo for rocksdb::AssociativeMergeOperator'" error
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// in config.log it means that the rocksdb version you are attempting to use is built without RTTI.
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class ConcatOperator : public rocksdb::AssociativeMergeOperator {
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public:
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bool Merge(const rocksdb::Slice&, const rocksdb::Slice*, const rocksdb::Slice&, std::string*, rocksdb::Logger*) const override { return true; }
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const char* Name() const override { return "ConcatOperator"; }
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};
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int main()
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{
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auto op = std::make_unique<ConcatOperator>();
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return 0;
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}
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