llvm-project/libcxx
Mehdi Amini f8764e30d5 Add deployment knobs to tests (for Apple platforms)
The tests for libc++ specify -target on the command-line to the
compiler, but this is problematic for a few reasons.

Firstly, the -target option isn't supported on Apple platforms. Parts
of the triple get dropped and ignored. Instead, software should be
compiled with a combination of the -arch and -m<name>-version-min
options.

Secondly, the generic "darwin" target references a kernel version
instead of a platform version. Each platform has its own independent
versions (with different versions of libc++.1.dylib), independent of the
version of the Darwin kernel.

This commit adds support to the LIT infrastructure for testing against
Apple platforms using -arch and -platform options.

If the host is not on OS X, or the compiler type is not clang or apple-clang, then this commit has NFC.
If the host is on OS X and --param=target_triple=... is specified, then a warning is emitted to use arch and platform instead. Besides the warning, there's NFC.
If the host is on OS X and *no* target-triple is specified, then use the new deployment target logic. This uses two new lit parameters, --param=arch=<arch> and --param=platform=<platform>. <platform> has the form <name>[<version>].
By default, arch is auto-detected from clang -dumpmachine, and platform is "macosx".
If the platform doesn't have a version:
For "macosx", the version is auto-detected from the host system using sw_vers. This may give a different version than the SDK, since new SDKs can be installed on older hosts.
Otherwise, the version is auto-detected from the SDK version using xcrun --show-sdk-path.
-arch <arch> -m<name>-version-min=<version> is added to the compiler flags.
The target triple is computed as <arch>-apple-<platform>. It is *not* passed to clang, but it is available for XFAIL and UNSUPPORTED (as is with_system_cxx_lib=<target>).
For convenience, apple-darwin and <arch>-apple-darwin are added to the set of available features.
There were a number of tests marked to XFAIL on x86_64-apple-darwin11
and x86_64-apple-darwin12. I updated these to
x86_64-apple-macosx10.7 and x86_64-apple-macosx10.8.

llvm-svn: 297798
2017-03-15 00:59:54 +00:00
..
benchmarks improve performance of string::find 2016-12-30 18:01:36 +00:00
cmake Fix cmake to find the compiler-rt libs on darwin 2017-03-14 04:12:29 +00:00
docs [libc++] Make _LIBCPP_TYPE_VIS export members 2017-03-02 03:22:18 +00:00
include Implement LWG2784, and mark 2786, 2795, 2804, 2812, 2826, 2834, 2837 and 2838 as complete - since we do them already 2017-03-14 17:08:47 +00:00
lib Change test coverage generation to use llvm-cov instead of gcov. 2017-03-11 03:24:18 +00:00
src Fix PR32183 - Wrap GCC exception implementation in missing namespace std 2017-03-08 20:06:01 +00:00
test Add deployment knobs to tests (for Apple platforms) 2017-03-15 00:59:54 +00:00
utils Add deployment knobs to tests (for Apple platforms) 2017-03-15 00:59:54 +00:00
www Mark LWG issues 2868, 2872, and 2890 as complete. There's nothing we need to do for them. 2017-03-14 17:35:56 +00:00
.arcconfig Upgrade arcconfig to use https 2016-07-18 02:02:49 +00:00
.clang-format Tweak .clang-format configuration. 2017-01-14 05:43:02 +00:00
.gitignore Implement N4606 optional 2016-10-12 07:46:20 +00:00
CMakeLists.txt Change test coverage generation to use llvm-cov instead of gcov. 2017-03-11 03:24:18 +00:00
CREDITS.TXT Updated email address in `CREDITS.txt`. 2017-03-06 20:46:55 +00:00
LICENSE.TXT Update year to 2017 2017-01-03 11:20:43 +00:00
NOTES.TXT Update doc and various cleanup 2016-12-23 20:00:13 +00:00
TODO.TXT Add list of filesystem NB comments to TODO.TXT so they can be tracked separately 2017-03-06 21:23:36 +00:00