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12 commits

Author SHA1 Message Date
Daniel Bertalan
06fc64be13 Toolchain+Meta: Update LLVM version to 13.0.0
This commit updates the Clang toolchain's version to 13.0.0, which comes
with better C++20 support and improved handling of new features by
clang-format. Due to the newly enabled `-Bsymbolic-functions` flag, our
Clang binaries will only be 2-4% slower than if we dynamically linked
them, but we save hundreds of megabytes of disk space.

The `BuildClang.sh` script has been reworked to build the entire
toolchain in just three steps: one for the compiler, one for GNU
binutils, and one for the runtime libraries. This reduces the complexity
of the build script, and will allow us to modify the CI configuration to
only rebuild the libraries when our libc headers change.

Most of the compile flags have been moved out to a separate CMake cache
file, similarly to how the Android and Fuchsia toolchains are
implemented within the LLVM repo. This provides a nicer interface than
the heaps of command-line arguments.

We no longer build separate toolchains for each architecture, as the
same Clang binary can compile code for multiple targets.

The horrible mess that `SERENITY_CLANG_ARCH` was, has been removed in
this commit. Clang happily accepts an `i686-pc-serenity` target triple,
which matches what our GCC toolchain accepts.
2021-10-17 17:09:58 +01:00
Andrew Kaster
b9e3647e66 Meta+Toolchain: Rename CMAKE_CXXFILT to SERENITY_CXXFILT
The "CMAKE_<foo>" variable namespace is reserved, and CXXFILT is not
currently a variable known to upstream CMake.
2021-09-15 19:04:52 +04:30
Andrew Kaster
b5c98ede08 Meta: Switch to a SuperBuild that splits host and target builds
Replace the old logic where we would start with a host build, and swap
all the CMake compiler and target variables underneath it to trick
CMake into building for Serenity after we configured and built the Lagom
code generators.

The SuperBuild creates two ExternalProjects, one for Lagom and one for
Serenity. The Serenity project depends on the install stage for the
Lagom build. The SuperBuild also generates a CMakeToolchain file for the
Serenity build to use that replaces the old toolchain file that was only
used for Ports.

To ensure that code generators are rebuilt when core libraries such as
AK and LibCore are modified, developers will need to direct their manual
`ninja` invocations to the SuperBuild's binary directory instead of the
Serenity binary directory.

This commit includes warning coalescing and option style cleanup for the
affected CMakeLists in the Kernel, top level, and runtime support
libraries. A large part of the cleanup is replacing USE_CLANG_TOOLCHAIN
with the proper CMAKE_CXX_COMPILER_ID variable, which will no longer be
confused by a host clang compiler.
2021-09-15 19:04:52 +04:30
Hediadyoin1
6fe7d4d7b8 Toolchain: Use gcc's ar
the vanilla versions might not handle all things, that gcc can do;
For example is lto not really supported by the vanilla versions
source:
https://gcc.gnu.org/wiki/LinkTimeOptimizationFAQ
2021-06-03 00:24:06 +01:00
Oleg Kosenkov
839aad6e5b
Toolchain: Set CMAKE_AR to the right executable 2021-06-02 23:25:44 +01:00
Gunnar Beutner
e6953d14d8 Toolchain: Update cmake platform definition
This fixes building cmake and other ports which use cmake
to detect whether we have -ldl.
2021-04-25 10:14:50 +02:00
Panagiotis Vasilopoulos
e45e0eeb47 Everywhere: Replace SERENITY_ROOT with SERENITY_SOURCE_DIR 2021-04-20 15:27:52 +02:00
Gunnar Beutner
d7978a3317 Toolchain: Enable -fexceptions and build a separate libstdc++ for the kernel
This enables building usermode programs with exception handling. It also
builds a libstdc++ without exception support for the kernel.

This is necessary because the libstdc++ that gets built is different
when exceptions are enabled. Using the same library binary would
require extensive stubs for exception-related functionality in the
kernel.
2021-04-18 10:55:25 +02:00
Gunnar Beutner
7edfe02dff Toolchain: Fix cmake definition for CMAKE_DL_LIBS
We don't have libdl (yet) so update the CMAKE_DL_LIBRARY
definition to match.
2021-04-17 11:40:56 +02:00
Gunnar Beutner
c9d5358685 Ports: Make sure ports are installed into /usr/local 2021-04-16 19:04:24 +02:00
Gunnar Beutner
594d480391 Toolchain+Ports: Move the CMake toolchain file into a subdirectory 2021-04-16 19:04:24 +02:00
Gunnar Beutner
c6c1e2037b Toolchain: Add platform definition for CMake
This also ensures that pkg-config finds packages in /usr/local
and changes the install prefix to /usr/local.
2021-04-16 19:04:24 +02:00