ff07c9b701
`Driver::ClangExecutable` is derived from:
* (-canonical-prefixes default): `realpath` on the executable path
* (-no-canonical-prefixes) argv[0] (consult PATH if argv[0] is a word)
`Dir` and `ResourceDir` are derived from `ClangExecutable`. Both
variables are used to derive certain include and library paths.
`InstalledDir` is a related concept used to derive certain other paths.
`InstalledDir` is weird in the -canonical-prefixes mode: Clang
calls `make_absolute` but does not follow symlinks
(FIXME from 9ade6a9a74).
This causes some search and library paths to be mix-and-matched.
The "Do a PATH lookup, if there are no directory components." logic
makes things worse.
`InstalledDir` is different when you invoke it via `PATH`:
```
% which clang
/usr/bin/clang
% clang -v |& grep InstalledDir
InstalledDir: /usr/bin
% /usr/lib/llvm-16/bin/clang -v |& grep InstalledDir
InstalledDir: /usr/lib/llvm-16/bin
```
I believe `InstalledDir` was a partial solution to
`-no-canonical-prefixes` and should be eventually removed.
This patch removes `SetInstallDir` and relies on Driver::Driver to set
`InstalledDir` to `Dir`. The behavior for regular file `clang` or
`-no-canonical-prefixes` is unchanged.
If a user creates a symlink to the regular file `clang` and uses the
default `-canonical-prefixes`, they now consistently get search and
library paths relative to the regular file `clang`, not mix-and-match
paths.
If a user creates a symlink to the regular file `clang` and replaces
some directorys from the actual installation, they should change the
symlink to a wrapper that calls the underlying clang with
`-no-canonical-prefixes`.
232 lines
12 KiB
C++
232 lines
12 KiB
C++
// UNSUPPORTED: system-windows
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// General tests that the header search paths for libc++ detected by the driver
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// and passed to CC1 are correct on Darwin platforms.
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// Check without a sysroot and without headers alongside the installation
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// (no include path should be added, and no warning or error).
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//
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// RUN: %clang -### %s -fsyntax-only 2>&1 \
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// RUN: --target=x86_64-apple-darwin \
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// RUN: -stdlib=libc++ \
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// RUN: -ccc-install-dir %S/Inputs/basic_darwin_toolchain_no_libcxx/usr/bin \
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// RUN: | FileCheck --check-prefix=CHECK-LIBCXX-NONE %s
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// CHECK-LIBCXX-NONE: "-cc1"
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// Check with only headers alongside the installation (those should be used).
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//
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// RUN: %clang -### %s -fsyntax-only 2>&1 \
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// RUN: --target=x86_64-apple-darwin \
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// RUN: -stdlib=libc++ \
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// RUN: -ccc-install-dir %S/Inputs/basic_darwin_toolchain/usr/bin \
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// RUN: --sysroot="" \
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// RUN: | FileCheck -DTOOLCHAIN=%S/Inputs/basic_darwin_toolchain \
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// RUN: --check-prefix=CHECK-LIBCXX-TOOLCHAIN-1 %s
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// CHECK-LIBCXX-TOOLCHAIN-1: "-cc1"
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// CHECK-LIBCXX-TOOLCHAIN-1: "-internal-isystem" "[[TOOLCHAIN]]/usr/bin/../include/c++/v1"
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// CHECK-LIBCXX-TOOLCHAIN-1-NOT: "-internal-isystem" "/usr/include/c++/v1"
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//
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// RUN: %clang -### %s -fsyntax-only 2>&1 \
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// RUN: --target=x86_64-apple-darwin \
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// RUN: -stdlib=libc++ \
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// RUN: -ccc-install-dir %S/Inputs/basic_darwin_toolchain/usr/bin \
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// RUN: -isysroot %S/Inputs/basic_darwin_sdk_no_libcxx \
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// RUN: | FileCheck -DTOOLCHAIN=%S/Inputs/basic_darwin_toolchain \
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// RUN: -DSYSROOT=%S/Inputs/basic_darwin_sdk_no_libcxx \
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// RUN: --check-prefix=CHECK-LIBCXX-TOOLCHAIN-2 %s
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// CHECK-LIBCXX-TOOLCHAIN-2: "-cc1"
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// CHECK-LIBCXX-TOOLCHAIN-2: "-internal-isystem" "[[TOOLCHAIN]]/usr/bin/../include/c++/v1"
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// CHECK-LIBCXX-TOOLCHAIN-2-NOT: "-internal-isystem" "[[SYSROOT]]/usr/include/c++/v1"
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// Check with only headers in the sysroot (those should be used).
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//
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// RUN: %clang -### %s -fsyntax-only 2>&1 \
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// RUN: --target=x86_64-apple-darwin \
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// RUN: -stdlib=libc++ \
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// RUN: -ccc-install-dir %S/Inputs/basic_darwin_toolchain_no_libcxx/usr/bin \
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// RUN: -isysroot %S/Inputs/basic_darwin_sdk_usr_cxx_v1 \
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// RUN: | FileCheck -DSYSROOT=%S/Inputs/basic_darwin_sdk_usr_cxx_v1 \
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// RUN: -DTOOLCHAIN=%S/Inputs/basic_darwin_toolchain_no_libcxx \
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// RUN: --check-prefix=CHECK-LIBCXX-SYSROOT-1 %s
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// CHECK-LIBCXX-SYSROOT-1: "-cc1"
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// CHECK-LIBCXX-SYSROOT-1: "-internal-isystem" "[[SYSROOT]]/usr/include/c++/v1"
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// CHECK-LIBCXX-SYSROOT-1-NOT: "-internal-isystem" "[[TOOLCHAIN]]/usr/bin/../include/c++/v1"
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// Check with both headers in the sysroot and headers alongside the installation
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// (the headers in the toolchain should be preferred over the <sysroot> headers).
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// Ensure that both -isysroot and --sysroot work, and that isysroot has precedence
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// over --sysroot.
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//
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// RUN: %clang -### %s -fsyntax-only 2>&1 \
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// RUN: --target=x86_64-apple-darwin \
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// RUN: -stdlib=libc++ \
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// RUN: -ccc-install-dir %S/Inputs/basic_darwin_toolchain/usr/bin \
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// RUN: -resource-dir=%S/Inputs/resource_dir \
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// RUN: -isysroot %S/Inputs/basic_darwin_sdk_usr_cxx_v1 \
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// RUN: | FileCheck -DSYSROOT=%S/Inputs/basic_darwin_sdk_usr_cxx_v1 \
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// RUN: -DTOOLCHAIN=%S/Inputs/basic_darwin_toolchain \
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// RUN: --check-prefix=CHECK-LIBCXX-SYSROOT_AND_TOOLCHAIN-1 %s
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//
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// RUN: %clang -### %s -fsyntax-only 2>&1 \
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// RUN: --target=x86_64-apple-darwin \
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// RUN: -stdlib=libc++ \
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// RUN: -ccc-install-dir %S/Inputs/basic_darwin_toolchain/usr/bin \
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// RUN: -resource-dir=%S/Inputs/resource_dir \
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// RUN: --sysroot %S/Inputs/basic_darwin_sdk_usr_cxx_v1 \
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// RUN: | FileCheck -DSYSROOT=%S/Inputs/basic_darwin_sdk_usr_cxx_v1 \
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// RUN: -DTOOLCHAIN=%S/Inputs/basic_darwin_toolchain \
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// RUN: --check-prefix=CHECK-LIBCXX-SYSROOT_AND_TOOLCHAIN-1 %s
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//
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// RUN: %clang -### %s -fsyntax-only 2>&1 \
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// RUN: --target=x86_64-apple-darwin \
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// RUN: -stdlib=libc++ \
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// RUN: -ccc-install-dir %S/Inputs/basic_darwin_toolchain/usr/bin \
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// RUN: -resource-dir=%S/Inputs/resource_dir \
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// RUN: -isysroot %S/Inputs/basic_darwin_sdk_usr_cxx_v1 \
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// RUN: --sysroot %S/Inputs/basic_darwin_sdk_no_libcxx \
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// RUN: | FileCheck -DSYSROOT=%S/Inputs/basic_darwin_sdk_usr_cxx_v1 \
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// RUN: -DTOOLCHAIN=%S/Inputs/basic_darwin_toolchain \
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// RUN: --check-prefix=CHECK-LIBCXX-SYSROOT_AND_TOOLCHAIN-1 %s
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//
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// CHECK-LIBCXX-SYSROOT_AND_TOOLCHAIN-1: "-cc1"
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// CHECK-LIBCXX-SYSROOT_AND_TOOLCHAIN-1: "-internal-isystem" "[[TOOLCHAIN]]/usr/bin/../include/c++/v1"
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// CHECK-LIBCXX-SYSROOT_AND_TOOLCHAIN-1-NOT: "-internal-isystem" "[[SYSROOT]]/usr/include/c++/v1"
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// Make sure that using -nostdinc, -nostdinc++ or -nostdlib will drop both the toolchain
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// C++ include path and the sysroot one.
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//
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// RUN: %clang -### %s -fsyntax-only 2>&1 \
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// RUN: --target=x86_64-apple-darwin16 \
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// RUN: -ccc-install-dir %S/Inputs/basic_darwin_toolchain/usr/bin \
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// RUN: -resource-dir=%S/Inputs/resource_dir \
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// RUN: -isysroot %S/Inputs/basic_darwin_sdk_usr \
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// RUN: -stdlib=platform \
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// RUN: -nostdinc \
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// RUN: | FileCheck -DSYSROOT=%S/Inputs/basic_darwin_sdk_usr \
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// RUN: -DTOOLCHAIN=%S/Inputs/basic_darwin_toolchain \
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// RUN: --check-prefix=CHECK-LIBCXX-NOSTDLIBINC %s
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// CHECK-LIBCXX-NOSTDINC: "-cc1"
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// CHECK-LIBCXX-NOSTDINC-NOT: "-internal-isystem" "[[TOOLCHAIN]]/usr/bin/../include/c++/v1"
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// CHECK-LIBCXX-NOSTDINC-NOT: "-internal-isystem" "[[SYSROOT]]/usr/include/c++/v1"
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//
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// RUN: %clang -### %s -fsyntax-only 2>&1 \
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// RUN: --target=x86_64-apple-darwin16 \
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// RUN: -ccc-install-dir %S/Inputs/basic_darwin_toolchain/usr/bin \
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// RUN: -resource-dir=%S/Inputs/resource_dir \
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// RUN: -isysroot %S/Inputs/basic_darwin_sdk_usr_cxx_v1 \
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// RUN: -stdlib=platform \
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// RUN: -nostdinc++ \
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// RUN: | FileCheck -DSYSROOT=%S/Inputs/basic_darwin_sdk_usr \
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// RUN: -DTOOLCHAIN=%S/Inputs/basic_darwin_toolchain \
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// RUN: --check-prefix=CHECK-LIBCXX-NOSTDINCXX %s
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// CHECK-LIBCXX-NOSTDINCXX: "-cc1"
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// CHECK-LIBCXX-NOSTDINCXX-NOT: "-internal-isystem" "[[TOOLCHAIN]]/usr/bin/../include/c++/v1"
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// CHECK-LIBCXX-NOSTDINCXX-NOT: "-internal-isystem" "[[SYSROOT]]/usr/include/c++/v1"
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//
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// RUN: %clang -### %s -fsyntax-only 2>&1 \
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// RUN: --target=x86_64-apple-darwin16 \
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// RUN: -ccc-install-dir %S/Inputs/basic_darwin_toolchain/usr/bin \
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// RUN: -resource-dir=%S/Inputs/resource_dir \
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// RUN: -isysroot %S/Inputs/basic_darwin_sdk_usr \
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// RUN: -stdlib=platform \
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// RUN: -nostdlibinc \
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// RUN: | FileCheck -DSYSROOT=%S/Inputs/basic_darwin_sdk_usr \
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// RUN: -DTOOLCHAIN=%S/Inputs/basic_darwin_toolchain \
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// RUN: --check-prefix=CHECK-LIBCXX-NOSTDLIBINC %s
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// CHECK-LIBCXX-NOSTDLIBINC: "-cc1"
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// CHECK-LIBCXX-NOSTDLIBINC-NOT: "-internal-isystem" "[[TOOLCHAIN]]/usr/bin/../include/c++/v1"
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// CHECK-LIBCXX-NOSTDLIBINC-NOT: "-internal-isystem" "[[SYSROOT]]/usr/include/c++/v1"
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// Make sure we explain that we considered a path but didn't add it when it
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// doesn't exist.
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//
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// RUN: %clang %s -fsyntax-only -v 2>&1 \
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// RUN: --target=x86_64-apple-darwin \
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// RUN: -ccc-install-dir %S/Inputs/basic_darwin_toolchain_no_libcxx/usr/bin \
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// RUN: -isysroot %S/Inputs/basic_darwin_sdk \
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// RUN: -stdlib=libc++ \
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// RUN: | FileCheck -DTOOLCHAIN=%S/Inputs/basic_darwin_toolchain_no_libcxx \
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// RUN: --check-prefix=CHECK-LIBCXX-MISSING-TOOLCHAIN %s
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// CHECK-LIBCXX-MISSING-TOOLCHAIN: ignoring nonexistent directory "[[TOOLCHAIN]]/usr/bin/../include/c++/v1"
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//
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// RUN: %clang %s -fsyntax-only -v 2>&1 \
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// RUN: --target=x86_64-apple-darwin \
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// RUN: -ccc-install-dir %S/Inputs/basic_darwin_toolchain_no_libcxx/usr/bin \
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// RUN: -isysroot %S/Inputs/basic_darwin_sdk_no_libcxx \
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// RUN: -stdlib=libc++ \
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// RUN: | FileCheck -DSYSROOT=%S/Inputs/basic_darwin_sdk_no_libcxx \
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// RUN: -DTOOLCHAIN=%S/Inputs/basic_darwin_toolchain_no_libcxx \
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// RUN: --check-prefix=CHECK-LIBCXX-MISSING-BOTH %s
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// CHECK-LIBCXX-MISSING-BOTH: ignoring nonexistent directory "[[TOOLCHAIN]]/usr/bin/../include/c++/v1"
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// CHECK-LIBCXX-MISSING-BOTH: ignoring nonexistent directory "[[SYSROOT]]/usr/include/c++/v1"
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// Make sure that on Darwin, we use libc++ header search paths by default even when
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// -stdlib= isn't passed.
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//
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// RUN: %clang -### %s -fsyntax-only 2>&1 \
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// RUN: --target=x86_64-apple-darwin \
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// RUN: -ccc-install-dir %S/Inputs/basic_darwin_toolchain_no_libcxx/usr/bin \
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// RUN: -isysroot %S/Inputs/basic_darwin_sdk_usr_cxx_v1 \
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// RUN: | FileCheck -DSYSROOT=%S/Inputs/basic_darwin_sdk_usr_cxx_v1 \
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// RUN: -DTOOLCHAIN=%S/Inputs/basic_darwin_toolchain_no_libcxx \
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// RUN: --check-prefix=CHECK-LIBCXX-STDLIB-UNSPECIFIED %s
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// CHECK-LIBCXX-STDLIB-UNSPECIFIED: "-cc1"
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// CHECK-LIBCXX-STDLIB-UNSPECIFIED: "-internal-isystem" "[[SYSROOT]]/usr/include/c++/v1"
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// ----------------------------------------------------------------------------
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// On Darwin, libc++ can be installed in one of the following places:
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// 1. Alongside the compiler in <install>/include/c++/v1
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// 2. Alongside the compiler in <clang-executable-folder>/../include/c++/v1
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// 3. In a SDK (or a custom sysroot) in <sysroot>/usr/include/c++/v1
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// The build folders do not have an `include/c++/v1`; create a new
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// local folder hierarchy that meets this requirement.
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// Note: this might not work with weird RPATH configurations.
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// RUN: rm -rf %t/install
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// RUN: mkdir -p %t/install/bin
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// RUN: cp %clang %t/install/bin/clang
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// RUN: mkdir -p %t/install/include/c++/v1
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// Headers in (1) and in (2) -> (1) is preferred over (2)
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// RUN: rm -rf %t/symlinked1
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// RUN: mkdir -p %t/symlinked1/bin
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// RUN: ln -sf %t/install/bin/clang %t/symlinked1/bin/clang
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// RUN: mkdir -p %t/symlinked1/include/c++/v1
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// RUN: %t/symlinked1/bin/clang -### %s -no-canonical-prefixes -fsyntax-only 2>&1 \
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// RUN: --target=x86_64-apple-darwin \
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// RUN: -stdlib=libc++ \
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// RUN: -isysroot %S/Inputs/basic_darwin_sdk_usr_cxx_v1 \
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// RUN: | FileCheck -DSYMLINKED=%t/symlinked1 \
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// RUN: -DTOOLCHAIN=%t/install \
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// RUN: -DSYSROOT=%S/Inputs/basic_darwin_sdk_usr_cxx_v1 \
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// RUN: --check-prefix=CHECK-SYMLINKED-INCLUDE-CXX-V1 %s
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// CHECK-SYMLINKED-INCLUDE-CXX-V1: "-internal-isystem" "[[SYMLINKED]]/bin/../include/c++/v1"
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// CHECK-SYMLINKED-INCLUDE-CXX-V1-NOT: "-internal-isystem" "[[TOOLCHAIN]]/bin/../include/c++/v1"
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// CHECK-SYMLINKED-INCLUDE-CXX-V1-NOT: "-internal-isystem" "[[SYSROOT]]/usr/include/c++/v1"
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// Headers in (2) and in (3) -> (2) is preferred over (3)
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// RUN: rm -rf %t/symlinked2
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// RUN: mkdir -p %t/symlinked2/bin
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// RUN: ln -sf %t/install/bin/clang %t/symlinked2/bin/clang
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// RUN: %t/symlinked2/bin/clang -### %s -fsyntax-only 2>&1 \
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// RUN: --target=x86_64-apple-darwin \
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// RUN: -stdlib=libc++ \
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// RUN: -isysroot %S/Inputs/basic_darwin_sdk_usr_cxx_v1 \
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// RUN: | FileCheck -DTOOLCHAIN=%t/install \
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// RUN: -DSYSROOT=%S/Inputs/basic_darwin_sdk_usr_cxx_v1 \
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// RUN: --check-prefix=CHECK-TOOLCHAIN-INCLUDE-CXX-V1 %s
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// CHECK-TOOLCHAIN-INCLUDE-CXX-V1: "-internal-isystem" "[[TOOLCHAIN]]/bin/../include/c++/v1"
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// CHECK-TOOLCHAIN-INCLUDE-CXX-V1-NOT: "-internal-isystem" "[[SYSROOT]]/usr/include/c++/v1"
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// Headers in (2) and nowhere else -> (2) is used
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// RUN: %t/symlinked2/bin/clang -### %s -fsyntax-only 2>&1 \
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// RUN: --target=x86_64-apple-darwin \
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// RUN: -stdlib=libc++ \
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// RUN: -isysroot %S/Inputs/basic_darwin_sdk_usr_cxx_v1 \
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// RUN: | FileCheck -DTOOLCHAIN=%t/install \
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// RUN: -DSYSROOT=%S/Inputs/basic_darwin_sdk_no_libcxx \
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// RUN: --check-prefix=CHECK-TOOLCHAIN-NO-SYSROOT %s
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// CHECK-TOOLCHAIN-NO-SYSROOT: "-internal-isystem" "[[TOOLCHAIN]]/bin/../include/c++/v1"
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