| 1 | //===- SomeDrivers.cpp ------------------------------------------*- C++ -*-===// |
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| 2 | // |
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| 3 | // This file is licensed under the Apache License v2.0 with LLVM Exceptions. |
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| 4 | // See https://llvm.org/LICENSE.txt for license information. |
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| 5 | // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
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| 6 | // |
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| 7 | //===----------------------------------------------------------------------===// |
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| 8 | // In this test we showcase the fact that only one LLD driver can be invoked - |
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| 9 | // the ELF driver that was linked in the test binary. Calling other drivers |
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| 10 | // would return a failure. When using LLD as a library, any driver can be |
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| 11 | // linked into your application. |
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| 12 | //===----------------------------------------------------------------------===// |
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| 13 | |
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| 14 | #include "lld/Common/Driver.h" |
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| 15 | #include "gmock/gmock.h" |
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| 16 | |
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| 17 | LLD_HAS_DRIVER(elf) |
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| 18 | |
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| 19 | static bool lldInvoke(const char *lldExe) { |
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| 20 | std::vector<const char *> args{lldExe, "--version" }; |
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| 21 | lld::Result s = lld::lldMain(args, stdoutOS&: llvm::outs(), stderrOS&: llvm::errs(), |
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| 22 | drivers: {{.f: lld::Gnu, .d: &lld::elf::link}}); |
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| 23 | return !s.retCode && s.canRunAgain; |
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| 24 | } |
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| 25 | |
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| 26 | TEST(AsLib, SomeDrivers) { |
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| 27 | // When this flag is on, we actually need the MinGW driver library, not the |
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| 28 | // ELF one. Here our test only covers the case where the ELF driver is linked |
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| 29 | // into the unit test binary. |
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| 30 | #ifndef LLD_DEFAULT_LD_LLD_IS_MINGW |
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| 31 | EXPECT_TRUE(lldInvoke("ld.lld" )); // ELF |
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| 32 | #endif |
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| 33 | // These drivers are not linked in this unit test. |
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| 34 | EXPECT_FALSE(lldInvoke("ld64.lld" )); // Mach-O |
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| 35 | EXPECT_FALSE(lldInvoke("lld-link" )); // COFF |
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| 36 | EXPECT_FALSE(lldInvoke("wasm-ld" )); // Wasm |
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| 37 | } |
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| 38 | |
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