Alexander Richardson dfafe3822b
Reland "[compiler-rt] Allow running tests without installing first"
Currently, the testsuite uses the default runtimes path to find the
runtimes libraries which may or may not match the just-built runtimes.
This change uses the `-resource-dir` flag for clang whenever
`COMPILER_RT_TEST_STANDALONE_BUILD_LIBS` is set to ensure that we are
actually testing the currently built libraries rather than the ones
bundled with `${COMPILER_RT_TEST_COMPILER}`.

The existing logic works fine when clang and compiler-rt share the same
build directory ``-DLLVM_ENABLE_PROJECTS=clang;compiler-rt`, but when
building compiler-rt separately we need to tell the compiler used for
the tests where it can find the just-built libraries.

This reduces the fixes check-all failures to one in my configuration:
```
cmake -DCMAKE_BUILD_TYPE=RelWithDebInfo -G Ninja
-DCMAKE_C_COMPILER=$HOME/output/upstream-llvm/bin/clang
-DCMAKE_CXX_COMPILER=$HOME/output/upstream-llvm/bin/clang++
-DCOMPILER_RT_INCLUDE_TESTS=ON
-DLLVM_EXTERNAL_LIT=$HOME/build/upstream-llvm-project-build/bin/llvm-lit
-DLLVM_CMAKE_DIR=$HOME/output/upstream-llvm
-DCOMPILER_RT_DEBUG=OFF
-S $HOME/src/upstream-llvm-project/compiler-rt
-B $HOME/src/upstream-llvm-project/compiler-rt/cmake-build-all-sanitizers
```

This relands the previous PR with fixes for Windows.
Depends on https://github.com/llvm/llvm-project/pull/88074 to be merged
first for GCC buildbots.

Pull Request: https://github.com/llvm/llvm-project/pull/88075
2024-04-12 13:20:30 -07:00
..
2019-04-18 18:49:11 +00:00
2019-04-18 18:49:11 +00:00
2019-04-18 18:49:11 +00:00
2023-09-01 00:57:35 -07:00
2020-07-24 00:24:46 -07:00
2021-09-04 14:12:58 +05:30
2018-11-06 23:25:25 +00:00
2019-02-20 18:55:52 +00:00