Commit Graph

8 Commits

Author SHA1 Message Date
Petr Hosek 60d3a6224b [gn] Make -no-exceptions flag a config
This allows it to be disabled for targets that need exceptions
like libunwind, libc++abi and libc++.

Differential Revision: https://reviews.llvm.org/D60328

llvm-svn: 357797
2019-04-05 19:12:37 +00:00
Peter Collingbourne a18761ab9e gn build: Create regular archives for the sanitizer runtimes.
We'll need to do this eventually if we create an installable package.
For now, this lets me use the archives to build Android, whose build
system wants to copy the archives to another location.

Differential Revision: https://reviews.llvm.org/D57607

llvm-svn: 352907
2019-02-01 20:34:43 +00:00
Peter Collingbourne 4d0f6e1a1a gn build: Rename llvm_host_triple to llvm_current_triple and have it use current_{cpu,os}.
This makes e.g. ToolChain::isCrossCompiling() in
clang/lib/Driver/ToolChain.cpp return the correct result
if the compiler was cross-compiled. This change also affects
llvm_default_target_triple, so cross-compiled compilers default to
targeting the cross-compilation target, which makes more sense than
the host that the compiler was compiled on.

This change will also be necessary in order for the correct triples
to appear in generated lit files for non-native targets.

Differential Revision: https://reviews.llvm.org/D56696

llvm-svn: 351168
2019-01-15 08:20:29 +00:00
Peter Collingbourne 5ee45e0c93 gn build: Split no-RTTI flag into a config.
Some of the sanitizer runtime code needs to be built with RTTI;
this allows that code to opt in to RTTI.

Differential Revision: https://reviews.llvm.org/D56627

llvm-svn: 351155
2019-01-15 02:43:33 +00:00
Peter Collingbourne d37af68ef3 gn build: Add a stage2 toolchain for Android.
This makes it possible to build llvm-symbolizer for Android, which
is one of the prerequisites for running the sanitizer tests on Android.

Differential Revision: https://reviews.llvm.org/D56577

llvm-svn: 350979
2019-01-11 23:18:51 +00:00
Peter Collingbourne fe44363f0d gn build: Create a variable for the host toolchain and start using it in the tblgen template.
Differential Revision: https://reviews.llvm.org/D56575

llvm-svn: 350964
2019-01-11 19:53:06 +00:00
Nico Weber fde9e0975f [gn build] Make `ninja check-clang` also run Clang's unit tests
Also add a build file for clang/lib/ASTMatchers/Dynamic, which is only needed
by tests (and clang/tools/extra).

Also make llvm/utils/gn/build/sync_source_lists_from_cmake.py check that every
CMakeLists.txt file below {lld,clang}/unittests has a corresponding BUILD.gn
file, so we notice if new test binaries get added (since the failure mode for
missing GN build files for tests is just the tests silently not running in the
GN build).

Also add a unittest() macro for defining unit test targets, and add a lengthy
comment there about where the unit test binaries go and why.

With this, the build files for //clang are complete.

Differential Revision: https://reviews.llvm.org/D56116

llvm-svn: 350171
2018-12-31 00:10:47 +00:00
Nico Weber f94d6ea95a Add initial scaffolding for the GN build.
See "GN build roundtable summary; adding GN build files to the repo" on
llvm-dev and cfe-dev for discussion.

In particular, this build is completely unsupported. People adding new files to
LLVM are not expected to update the GN build files, and reviewers are not
supposed to request the gn build files to be updated.

This adds just enough to be able to build llvm/lib/Demangle. It requires using
a monorepo.

This adds a few build config options you can set in args.gn
(`gn args out/foo --list` for all):
- is_debug = true to enable debug builds (defaults to release)
- llvm_enable_assertions to toggle assertions (defaults to true)
- clang_base_path, if set an absolute path to a locally-built clang to be used
  as host compiler

Differential Revision: https://reviews.llvm.org/D54345

llvm-svn: 347128
2018-11-17 02:21:53 +00:00