CMake/Modules/CMakeDetermineASMCompiler.cmake
Brad King 86578eccf2 Simplify CMake per-source license notices
Per-source copyright/license notice headers that spell out copyright holder
names and years are hard to maintain and often out-of-date or plain wrong.
Precise contributor information is already maintained automatically by the
version control tool.  Ultimately it is the receiver of a file who is
responsible for determining its licensing status, and per-source notices are
merely a convenience.  Therefore it is simpler and more accurate for
each source to have a generic notice of the license name and references to
more detailed information on copyright holders and full license terms.

Our `Copyright.txt` file now contains a list of Contributors whose names
appeared source-level copyright notices.  It also references version control
history for more precise information.  Therefore we no longer need to spell
out the list of Contributors in each source file notice.

Replace CMake per-source copyright/license notice headers with a short
description of the license and links to `Copyright.txt` and online information
available from "https://cmake.org/licensing".  The online URL also handles
cases of modules being copied out of our source into other projects, so we
can drop our notices about replacing links with full license text.

Run the `Utilities/Scripts/filter-notices.bash` script to perform the majority
of the replacements mechanically.  Manually fix up shebang lines and trailing
newlines in a few files.  Manually update the notices in a few files that the
script does not handle.
2016-09-27 15:14:44 -04:00

154 lines
6.1 KiB
CMake

# Distributed under the OSI-approved BSD 3-Clause License. See accompanying
# file Copyright.txt or https://cmake.org/licensing for details.
# determine the compiler to use for ASM programs
include(${CMAKE_ROOT}/Modules/CMakeDetermineCompiler.cmake)
if(NOT CMAKE_ASM${ASM_DIALECT}_COMPILER)
# prefer the environment variable ASM
if(NOT $ENV{ASM${ASM_DIALECT}} STREQUAL "")
set(CMAKE_ASM${ASM_DIALECT}_COMPILER_INIT "$ENV{ASM${ASM_DIALECT}}")
endif()
# finally list compilers to try
if("ASM${ASM_DIALECT}" STREQUAL "ASM") # the generic assembler support
if(NOT CMAKE_ASM_COMPILER_INIT)
if(CMAKE_C_COMPILER)
set(CMAKE_ASM_COMPILER "${CMAKE_C_COMPILER}" CACHE FILEPATH "The ASM compiler")
set(CMAKE_ASM_COMPILER_ID "${CMAKE_C_COMPILER_ID}")
elseif(CMAKE_CXX_COMPILER)
set(CMAKE_ASM_COMPILER "${CMAKE_CXX_COMPILER}" CACHE FILEPATH "The ASM compiler")
set(CMAKE_ASM_COMPILER_ID "${CMAKE_CXX_COMPILER_ID}")
else()
# List all default C and CXX compilers
set(CMAKE_ASM${ASM_DIALECT}_COMPILER_LIST
${_CMAKE_TOOLCHAIN_PREFIX}cc ${_CMAKE_TOOLCHAIN_PREFIX}gcc cl bcc xlc
CC ${_CMAKE_TOOLCHAIN_PREFIX}c++ ${_CMAKE_TOOLCHAIN_PREFIX}g++ aCC cl bcc xlC)
endif()
endif()
else() # some specific assembler "dialect"
if(NOT CMAKE_ASM${ASM_DIALECT}_COMPILER_INIT AND NOT CMAKE_ASM${ASM_DIALECT}_COMPILER_LIST)
message(FATAL_ERROR "CMAKE_ASM${ASM_DIALECT}_COMPILER_INIT or CMAKE_ASM${ASM_DIALECT}_COMPILER_LIST must be preset !")
endif()
endif()
# Find the compiler.
_cmake_find_compiler(ASM${ASM_DIALECT})
else()
_cmake_find_compiler_path(ASM${ASM_DIALECT})
endif()
mark_as_advanced(CMAKE_ASM${ASM_DIALECT}_COMPILER)
if (NOT _CMAKE_TOOLCHAIN_LOCATION)
get_filename_component(_CMAKE_TOOLCHAIN_LOCATION "${CMAKE_ASM${ASM_DIALECT}_COMPILER}" PATH)
endif ()
if(NOT CMAKE_ASM${ASM_DIALECT}_COMPILER_ID)
# Table of per-vendor compiler id flags with expected output.
list(APPEND CMAKE_ASM${ASM_DIALECT}_COMPILER_ID_VENDORS GNU )
set(CMAKE_ASM${ASM_DIALECT}_COMPILER_ID_VENDOR_FLAGS_GNU "--version")
set(CMAKE_ASM${ASM_DIALECT}_COMPILER_ID_VENDOR_REGEX_GNU "(GNU assembler)|(GCC)|(Free Software Foundation)")
list(APPEND CMAKE_ASM${ASM_DIALECT}_COMPILER_ID_VENDORS HP )
set(CMAKE_ASM${ASM_DIALECT}_COMPILER_ID_VENDOR_FLAGS_HP "-V")
set(CMAKE_ASM${ASM_DIALECT}_COMPILER_ID_VENDOR_REGEX_HP "HP C")
list(APPEND CMAKE_ASM${ASM_DIALECT}_COMPILER_ID_VENDORS Intel )
set(CMAKE_ASM${ASM_DIALECT}_COMPILER_ID_VENDOR_FLAGS_Intel "--version")
set(CMAKE_ASM${ASM_DIALECT}_COMPILER_ID_VENDOR_REGEX_Intel "(ICC)")
list(APPEND CMAKE_ASM${ASM_DIALECT}_COMPILER_ID_VENDORS SunPro )
set(CMAKE_ASM${ASM_DIALECT}_COMPILER_ID_VENDOR_FLAGS_SunPro "-V")
set(CMAKE_ASM${ASM_DIALECT}_COMPILER_ID_VENDOR_REGEX_SunPro "Sun C")
list(APPEND CMAKE_ASM${ASM_DIALECT}_COMPILER_ID_VENDORS XL )
set(CMAKE_ASM${ASM_DIALECT}_COMPILER_ID_VENDOR_FLAGS_XL "-qversion")
set(CMAKE_ASM${ASM_DIALECT}_COMPILER_ID_VENDOR_REGEX_XL "XL C")
list(APPEND CMAKE_ASM${ASM_DIALECT}_COMPILER_ID_VENDORS MSVC )
set(CMAKE_ASM${ASM_DIALECT}_COMPILER_ID_VENDOR_FLAGS_MSVC "/?")
set(CMAKE_ASM${ASM_DIALECT}_COMPILER_ID_VENDOR_REGEX_MSVC "Microsoft")
list(APPEND CMAKE_ASM${ASM_DIALECT}_COMPILER_ID_VENDORS TI )
set(CMAKE_ASM${ASM_DIALECT}_COMPILER_ID_VENDOR_FLAGS_TI "-h")
set(CMAKE_ASM${ASM_DIALECT}_COMPILER_ID_VENDOR_REGEX_TI "Texas Instruments")
list(APPEND CMAKE_ASM${ASM_DIALECT}_COMPILER_ID_VENDORS GNU IAR)
set(CMAKE_ASM${ASM_DIALECT}_COMPILER_ID_VENDOR_FLAGS_IAR )
set(CMAKE_ASM${ASM_DIALECT}_COMPILER_ID_VENDOR_REGEX_IAR "IAR Assembler")
list(APPEND CMAKE_ASM${ASM_DIALECT}_COMPILER_ID_VENDORS ARMCC)
set(CMAKE_ASM${ASM_DIALECT}_COMPILER_ID_VENDOR_FLAGS_ARMCC )
set(CMAKE_ASM${ASM_DIALECT}_COMPILER_ID_VENDOR_REGEX_ARMCC "(ARM Compiler)|(ARM Assembler)")
include(CMakeDetermineCompilerId)
CMAKE_DETERMINE_COMPILER_ID_VENDOR(ASM${ASM_DIALECT})
endif()
if(CMAKE_ASM${ASM_DIALECT}_COMPILER_ID)
message(STATUS "The ASM${ASM_DIALECT} compiler identification is ${CMAKE_ASM${ASM_DIALECT}_COMPILER_ID}")
else()
message(STATUS "The ASM${ASM_DIALECT} compiler identification is unknown")
endif()
# If we have a gas/as cross compiler, they have usually some prefix, like
# e.g. powerpc-linux-gas, arm-elf-gas or i586-mingw32msvc-gas , optionally
# with a 3-component version number at the end
# The other tools of the toolchain usually have the same prefix
# NAME_WE cannot be used since then this test will fail for names like
# "arm-unknown-nto-qnx6.3.0-gas.exe", where BASENAME would be
# "arm-unknown-nto-qnx6" instead of the correct "arm-unknown-nto-qnx6.3.0-"
if (NOT _CMAKE_TOOLCHAIN_PREFIX)
get_filename_component(COMPILER_BASENAME "${CMAKE_ASM${ASM_DIALECT}_COMPILER}" NAME)
if (COMPILER_BASENAME MATCHES "^(.+-)g?as(-[0-9]+\\.[0-9]+\\.[0-9]+)?(\\.exe)?$")
set(_CMAKE_TOOLCHAIN_PREFIX ${CMAKE_MATCH_1})
endif ()
endif ()
# Now try the C compiler regexp:
if (NOT _CMAKE_TOOLCHAIN_PREFIX)
if (COMPILER_BASENAME MATCHES "^(.+-)g?cc(-[0-9]+\\.[0-9]+\\.[0-9]+)?(\\.exe)?$")
set(_CMAKE_TOOLCHAIN_PREFIX ${CMAKE_MATCH_1})
endif ()
endif ()
# Finally try the CXX compiler regexp:
if (NOT _CMAKE_TOOLCHAIN_PREFIX)
if (COMPILER_BASENAME MATCHES "^(.+-)[gc]\\+\\+(-[0-9]+\\.[0-9]+\\.[0-9]+)?(\\.exe)?$")
set(_CMAKE_TOOLCHAIN_PREFIX ${CMAKE_MATCH_1})
endif ()
endif ()
include(CMakeFindBinUtils)
set(CMAKE_ASM${ASM_DIALECT}_COMPILER_ENV_VAR "ASM${ASM_DIALECT}")
if(CMAKE_ASM${ASM_DIALECT}_COMPILER)
message(STATUS "Found assembler: ${CMAKE_ASM${ASM_DIALECT}_COMPILER}")
else()
message(STATUS "Didn't find assembler")
endif()
set(_CMAKE_ASM_COMPILER "${CMAKE_ASM${ASM_DIALECT}_COMPILER}")
set(_CMAKE_ASM_COMPILER_ID "${CMAKE_ASM${ASM_DIALECT}_COMPILER_ID}")
set(_CMAKE_ASM_COMPILER_ARG1 "${CMAKE_ASM${ASM_DIALECT}_COMPILER_ARG1}")
set(_CMAKE_ASM_COMPILER_ENV_VAR "${CMAKE_ASM${ASM_DIALECT}_COMPILER_ENV_VAR}")
# configure variables set in this file for fast reload later on
configure_file(${CMAKE_ROOT}/Modules/CMakeASMCompiler.cmake.in
${CMAKE_PLATFORM_INFO_DIR}/CMakeASM${ASM_DIALECT}Compiler.cmake @ONLY)
set(_CMAKE_ASM_COMPILER)
set(_CMAKE_ASM_COMPILER_ARG1)
set(_CMAKE_ASM_COMPILER_ENV_VAR)