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# Copyright (c) 2010, 2025, Oracle and/or its affiliates.
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License, version 2.0,
# as published by the Free Software Foundation.
#
# This program is designed to work with certain software (including
# but not limited to OpenSSL) that is licensed under separate terms,
# as designated in a particular file or component or in included license
# documentation. The authors of MySQL hereby grant you an additional
# permission to link the program and your derivative works with the
# separately licensed software that they have either included with
# the program or referenced in the documentation.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License, version 2.0, for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
# This file includes Linux specific options and quirks, related to system checks
INCLUDE(CheckSymbolExists)
INCLUDE(CheckCSourceRuns)
SET(LINUX 1)
IF(CMAKE_SYSTEM_PROCESSOR MATCHES "aarch64")
SET(LINUX_ARM 1)
ENDIF()
# OS display name (version_compile_os etc).
# Used by the test suite to ignore bugs on some platforms.
SET(SYSTEM_TYPE "Linux")
IF(EXISTS "/etc/alpine-release")
SET(LINUX_ALPINE 1)
ENDIF()
IF(EXISTS "/etc/fedora-release")
SET(LINUX_FEDORA 1)
FILE(READ "/etc/fedora-release" FEDORA_RELEASE)
IF(FEDORA_RELEASE MATCHES "Fedora" AND
FEDORA_RELEASE MATCHES "28")
SET(LINUX_FEDORA_28 1)
ENDIF()
IF(FEDORA_RELEASE MATCHES "Fedora" AND
FEDORA_RELEASE MATCHES "34")
SET(LINUX_FEDORA_34 1)
ENDIF()
IF(IS_SYMLINK "/usr/sbin")
FILE(READ_SYMLINK "/usr/sbin" USR_SBIN)
IF(USR_SBIN STREQUAL "bin")
SET(LINUX_FEDORA_SBIN_MERGE 1)
ENDIF()
ENDIF()
ENDIF()
# Use dpkg-buildflags --get CPPFLAGS | CFLAGS | CXXFLAGS | LDFLAGS
# to get flags for this platform.
IF(LINUX_DEBIAN OR LINUX_UBUNTU)
SET(LINUX_DEB_PLATFORM 1)
ENDIF()
# Use CMAKE_C_FLAGS | CMAKE_CXX_FLAGS = rpm --eval %optflags
# to get flags for this platform.
IF(LINUX_FEDORA OR LINUX_RHEL OR LINUX_SUSE)
SET(LINUX_RPM_PLATFORM 1)
ENDIF()
# We require at least GCC 7.1 Clang 5
IF(NOT FORCE_UNSUPPORTED_COMPILER)
IF(MY_COMPILER_IS_GNU)
IF(CMAKE_CXX_COMPILER_VERSION VERSION_LESS 7.1)
MESSAGE(FATAL_ERROR "GCC 7.1 or newer is required")
ENDIF()
ELSEIF(MY_COMPILER_IS_CLANG)
IF(CMAKE_CXX_COMPILER_VERSION VERSION_LESS 5)
MESSAGE(FATAL_ERROR "Clang 5 or newer is required!")
ENDIF()
ELSE()
MESSAGE(FATAL_ERROR "Unsupported compiler!")
ENDIF()
ENDIF()
# ISO C89, ISO C99, POSIX.1, POSIX.2, BSD, SVID, X/Open, LFS, and GNU extensions.
ADD_DEFINITIONS(-D_GNU_SOURCE)
# 64 bit file offset support flag
ADD_DEFINITIONS(-D_FILE_OFFSET_BITS=64)
# Ensure we have clean build for shared libraries
# without unresolved symbols
# Not supported with Sanitizers
IF(NOT WITH_ASAN AND
NOT WITH_LSAN AND
NOT WITH_MSAN AND
NOT WITH_TSAN AND
NOT WITH_UBSAN)
SET(LINK_FLAG_NO_UNDEFINED "-Wl,--no-undefined")
SET(LINK_FLAG_Z_DEFS "-z,defs")
ENDIF()
# Linux specific HUGETLB /large page support
CHECK_SYMBOL_EXISTS(SHM_HUGETLB sys/shm.h HAVE_LINUX_LARGE_PAGES)
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