Commit Graph

10 Commits

Author SHA1 Message Date
Eric Fiselier 0b37f209bf Start libc++ python cleanup and consolidation.
Libc++ frequently creates and uses utilities written in python.
Currently there are python modules under both libcxx/test and
libcxx/util. My goal with these changes is to consolidate them
into a single package under libcxx/utils/libcxx.

llvm-svn: 294644
2017-02-09 22:53:14 +00:00
Eric Fiselier b26ed3924f Fix handling of Apple target triple when checking the ABI lists.
The check-cxx-abilist rule uses TARGET_TRIPLE to determine which
ABI list to check. However the triple on Apple contains the darwin
version which changes frequently, but libc++ doesn't need
different ABI lists for each darwin version.

This patch strips the minor version and patchlevel from TARGET_TRIPLE
before using it to determine the ABI list.

llvm-svn: 292557
2017-01-20 00:57:08 +00:00
Eric Fiselier 1da55f532c Allow sym_diff.py to report non-zero for non-breaking ABI changes
llvm-svn: 292297
2017-01-18 00:05:01 +00:00
Eric Fiselier 1285e4d60e Recommit r290839 - Fix configuring and building libc++ w/o an ABI library.
This patch re-commits a previous attempt to support building libc++ w/o
an ABI library. That patch was originally reverted because:

1) It forgot to teach the test suite about "default" ABI libraries.

2) Some LLVM builders don't clear the CMake cache between builds. The previous
   patch caused those builders to fail since their old cache entry for
   LIBCXX_CXX_ABI="" is no longer valid.

The updated patch addresses both issues. It works around (2) by adding
a hack to force the builders to update their cache entries. The hack will
be removed shortly once all LLVM builders have run.

Original commit message
-----------------------

Typically libc++ uses libc++abi or libcxxrt to provide the ABI and runtime bits
of the C++ STL. However we also support building w/o an ABI library entirely.
This patch fixes building libc++ w/o an ABI library (and incorporates the
`~type_info()` fix in D28211).

The main changes in this patch are:

1) Add `-DLIBCXX_CXX_ABI=default` instead of using the empty string to mean "default".
2) Fix CMake bits which treated "none" as "default" on OS X.
3) Teach the source files to respect `-D_LIBCPP_BUILDING_HAS_NO_ABI_LIBRARY`.
4) Define ~type_info() when _LIBCPP_BUILDING_HAS_NO_ABI_LIBRARY is defined.

Unfortunately this patch doesn't help clean up the macro mess that we use to
configure for different ABI libraries.

llvm-svn: 290849
2017-01-03 01:18:48 +00:00
Eric Fiselier 221596df33 Revert r290839 - Fix configuring and building libc++ w/o an ABI library
llvm-svn: 290841
2017-01-02 22:27:45 +00:00
Eric Fiselier 5d25843f66 Fix configuring and building libc++ w/o an ABI library.
Typically libc++ uses libc++abi or libcxxrt to provide the ABI and runtime bits
of the C++ STL. However we also support building w/o an ABI library entirely.
This patch fixes building libc++ w/o an ABI library (and incorporates the
`~type_info()` fix in D28211).

The main changes in this patch are:

1) Add `-DLIBCXX_CXX_ABI=default` instead of using the empty string to mean "default".
2) Fix CMake bits which treated "none" as "default" on OS X.
3) Teach the source files to respect `-D_LIBCPP_BUILDING_HAS_NO_ABI_LIBRARY`.
4) Define ~type_info() when _LIBCPP_BUILDING_HAS_NO_ABI_LIBRARY is defined.

Unfortunately this patch doesn't help clean up the macro mess that we use to
configure for different ABI libraries.

llvm-svn: 290839
2017-01-02 21:58:06 +00:00
Eric Fiselier 4b10f489fb Change sym_check to filter non-stdlib symbols.
Currently sym_check almost all names found in the binary, including those
which are defined in other libraries. This makes our ABI lists harder to maintain.

This patch adds a --only-stdlib-symbols option to sym_check which removes
all symbols which aren't possibly provided by libc++. It also re-generates
the linux ABI list after making this change.

llvm-svn: 287294
2016-11-18 01:40:20 +00:00
Eric Fiselier 209a397060 Fix ABI configuration detection on OS X
llvm-svn: 286792
2016-11-14 03:03:13 +00:00
Eric Fiselier 310891f29a Fix CMake set syntax
llvm-svn: 286791
2016-11-14 02:51:30 +00:00
Eric Fiselier 28349f9bf2 Add check-cxx-abilist target when supported.
This patch adds a `check-cxx-abilist` target which verifies the libc++.so ABI
when the current build configuration matches the configuration used to generate
the ABI lists.

In order to make this change `HandleOutOfTreeLLVM.cmake` needed to be modified
to include `LLVMConfig.cmake` so that `TARGET_TRIPLE` is defined. Hopefully
the changes needed to accommodate this won't break existing build
configurations.

llvm-svn: 286789
2016-11-14 02:43:12 +00:00