Jan Svoboda b8b14b682c [clang][deps] Make resource directory deduction configurable ... The `clang-scan-deps` CLI tool invokes the compiler with `-print-resource-dir` in case the `-resource-dir` argument is missing from the compilation command line. This is to enable running the tool on compilation databases that use compiler from a different toolchain than `clang-scan-deps` itself. While this doesn't make sense when scanning modular builds (due to the `-cc1` arguments the tool generates), the tool can can be used to efficiently scan for file dependencies of non-modular builds too. This patch stops deducing the resource directory by invoking the compiler by default. This mode can still be enabled by invoking `clang-scan-deps` with `--resource-dir-recipe invoke-compiler`. The new default is `--resource-dir-recipe modify-compiler-path` which relies on the resource directory deduction taking place in `Driver::Driver` which is based on the compiler path. This makes the default more aligned with the intended usage of the tool while still allowing it to serve other use-cases. Note that this functionality was also influenced by D108979, where the dependency scanner stopped going through `ClangTool::run`. The function tried to deduce the resource directory based on the current executable path, which might not be what the users expect when invoked from within a shared library. Depends on D108979. Reviewed By: dexonsmith Differential Revision: https://reviews.llvm.org/D108366		2021-10-21 14:06:52 +02:00
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CMakeLists.txt	cmake: Add CLANG_LINK_CLANG_DYLIB option	2019-07-03 22:45:55 +00:00
ClangScanDeps.cpp	[clang][deps] Make resource directory deduction configurable	2021-10-21 14:06:52 +02:00