build_tools/pkgci/linux_toolchain_release.cmake

# Copyright 2023 The IREE Authors
#
# Licensed under the Apache License v2.0 with LLVM Exceptions.
# See https://llvm.org/LICENSE.txt for license information.
# SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception

# The CI builds with this custom toolchain on Linux by
# setting the variable CMAKE_TOOLCHAIN_FILE.
# It does several things:
#   * Enables thin archives to make debug symbol builds more efficient.
#   * Hardcodes to link with LLD and GDB indexes.
#   * Enables split dwarf debug builds.
#   * Hardcodes to build with clang.
#
# We have some other jobs which verify/build with different compiler
# options, but those are handled with a one-off.

message(STATUS "Enabling IREE Release toolchain")
set(CMAKE_C_COMPILER "clang")
set(CMAKE_CXX_COMPILER "clang++")

set(CMAKE_C_ARCHIVE_APPEND "<CMAKE_AR> qT <TARGET> <LINK_FLAGS> <OBJECTS>")
set(CMAKE_CXX_ARCHIVE_APPEND "<CMAKE_AR> qT <TARGET> <LINK_FLAGS> <OBJECTS>")
set(CMAKE_C_ARCHIVE_CREATE "<CMAKE_AR> crT <TARGET> <LINK_FLAGS> <OBJECTS>")
set(CMAKE_CXX_ARCHIVE_CREATE "<CMAKE_AR> crT <TARGET> <LINK_FLAGS> <OBJECTS>")

set(CMAKE_EXE_LINKER_FLAGS_INIT "-fuse-ld=lld -Wl,--gdb-index")
set(CMAKE_MODULE_LINKER_FLAGS_INIT "-fuse-ld=lld -Wl,--gdb-index")
set(CMAKE_SHARED_LINKER_FLAGS_INIT "-fuse-ld=lld -Wl,--gdb-index")

set(CMAKE_C_FLAGS_DEBUG "${CMAKE_C_FLAGS_DEBUG} -gsplit-dwarf -ggnu-pubnames")
set(CMAKE_CXX_FLAGS_DEBUG "${CMAKE_CXX_FLAGS_DEBUG} -gsplit-dwarf -ggnu-pubnames")
set(CMAKE_C_FLAGS_RELWITHDEBINFO "${CMAKE_C_FLAGS_RELWITHDEBINFO} -gsplit-dwarf -ggnu-pubnames")
set(CMAKE_CXX_FLAGS_RELWITHDEBINFO "${CMAKE_CXX_FLAGS_RELWITHDEBINFO} -gsplit-dwarf -ggnu-pubnames")