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FindRE2C.cmake
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FindRE2C.cmake
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# The module defines the following variables:
# RE2C_EXECUTABLE - the path to the re2c executable
#
#=============================================================================
find_program(RE2C_EXECUTABLE re2c DOC "path to the re2c executable")
mark_as_advanced(RE2C_EXECUTABLE)
if(RE2C_EXECUTABLE)
execute_process(COMMAND ${RE2C_EXECUTABLE} -v
OUTPUT_VARIABLE RE2C_version_output
ERROR_VARIABLE RE2C_version_error
RESULT_VARIABLE RE2C_version_result
OUTPUT_STRIP_TRAILING_WHITESPACE)
if(NOT ${RE2C_version_result} EQUAL 0)
message(SEND_ERROR
"Command \"${RE2C_EXECUTABLE} -v\" failed with output:\n${RE2C_version_output}\n${RE2C_version_error}")
else()
string(REGEX REPLACE "^re2c ([0-9]+[^ ]*)( .*)?$" "\\1" RE2C_VERSION "${RE2C_version_output}")
endif()
# Provide a macro to generate custom build rules:
# RE2C_TARGET(Name RE2CInput RE2COutput [COMPILE_FLAGS <string>])
# which creates a custom command to generate the <RE2COutput> file from
# the <RE2CInput> file. If COMPILE_FLAGS option is specified, the next
# parameter is added to the re2c command line. Name is an alias used to
# get details of this custom command.
# This module also defines a macro:
# ADD_RE2C_LEMON_DEPENDENCY(RE2CTarget LemonTarget)
# which adds the required dependency between a scanner and a parser
# where <RE2CTarget> and <LemonTarget> are the first parameters of
# respectively RE2C_TARGET and LEMON_TARGET macros.
#
# ====================================================================
# Example:
#
# find_package(LEMON)
# find_package(RE2C)
#
# LEMON_TARGET(MyParser parser.y "${CMAKE_CURRENT_BINARY_DIR}/parser.cpp")
# RE2C_TARGET(MyScanner scanner.re "${CMAKE_CURRENT_BINARY_DIR}/scanner.cpp")
# ADD_RE2C_LEMON_DEPENDENCY(MyScanner MyParser)
#
# include_directories("${CMAKE_CURRENT_BINARY_DIR}")
# add_executable(Foo
# Foo.cc
# ${LEMON_MyParser_OUTPUTS}
# ${RE2C_MyScanner_OUTPUTS}
# )
# ====================================================================
#
#=============================================================================
# Copyright (c) 2010-2016 United States Government as represented by
# the U.S. Army Research Laboratory.
# Copyright 2009 Kitware, Inc.
# Copyright 2006 Tristan Carel
# All rights reserved.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions
# are met:
#
# * Redistributions of source code must retain the above copyright
# notice, this list of conditions and the following disclaimer.
#
# * Redistributions in binary form must reproduce the above copyright
# notice, this list of conditions and the following disclaimer in the
# documentation and/or other materials provided with the distribution.
#
# * The names of the authors may not be used to endorse or promote
# products derived from this software without specific prior written
# permission.
#
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
# HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
#=============================================================================
#============================================================
# RE2C_TARGET (public macro)
#============================================================
#
if(NOT COMMAND RE2C_TARGET)
function(RE2C_TARGET Name RE2CInput RE2COutput)
set(_re2c_args COMPILE_FLAGS DEFINES_FILE)
cmake_parse_arguments(RE2C_TARGET_ARG "" "${_re2c_args}" "" ${ARGN})
if(NOT "${RE2C_TARGET_ARG_UNPARSED_ARGUMENTS}" STREQUAL "")
message(SEND_ERROR "RE2C_TARGET(<Name> <RE2CInput> <RE2COutput>
[COMPILE_FLAGS <string>]
[DEFINES_FILE <string>])")
else()
if(NOT "${RE2C_TARGET_ARG_COMPILE_FLAGS}" STREQUAL "")
set(RE2C_EXECUTABLE_opts "${RE2C_TARGET_ARG_COMPILE_FLAGS}")
separate_arguments(RE2C_EXECUTABLE_opts)
else()
set(RE2C_EXECUTABLE_opts "")
endif()
if(NOT "${RE2C_TARGET_ARG_DEFINES_FILE}" STREQUAL "")
list(APPEND RE2C_EXECUTABLE_opts -t ${RE2C_TARGET_ARG_DEFINES_FILE})
endif()
add_custom_command(
OUTPUT ${CMAKE_CURRENT_BINARY_DIR}/${RE2COutput}
COMMAND ${RE2C_EXECUTABLE}
ARGS ${RE2C_EXECUTABLE_opts} -o ${RE2COutput} ${CMAKE_CURRENT_SOURCE_DIR}/${RE2CInput}
DEPENDS ${RE2CInput}
COMMENT "[RE2C][${Name}] Building scanner with ${RE2C_EXECUTABLE}"
WORKING_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR}
)
# TODO: check, for generated sources headers should be included in outputs
set(RE2C_${Name}_DEFINED TRUE PARENT_SCOPE)
set(RE2C_${Name}_OUTPUTS ${RE2COutput} PARENT_SCOPE)
if("${RE2C_TARGET_ARG_DEFINES_FILE}" STREQUAL "")
set(RE2C_${Name}_OUTPUT_HEADER "" PARENT_SCOPE)
else()
set(RE2C_${Name}_OUTPUT_HEADER "${RE2C_TARGET_ARG_DEFINES_FILE}" PARENT_SCOPE)
endif()
set(RE2C_${Name}_INCLUDE_DIR "${CMAKE_CURRENT_BINARY_DIR}" PARENT_SCOPE)
endif()
endfunction(RE2C_TARGET)
endif(NOT COMMAND RE2C_TARGET)
#============================================================
#============================================================
# ADD_RE2C_LEMON_DEPENDENCY (public macro)
#============================================================
#
if(NOT COMMAND ADD_RE2C_LEMON_DEPENDENCY)
function(ADD_RE2C_LEMON_DEPENDENCY RE2CTarget LemonTarget)
if(NOT RE2C_${RE2CTarget}_OUTPUTS)
message(SEND_ERROR "RE2C target `${RE2CTarget}' does not exists.")
endif()
if(NOT LEMON_${LemonTarget}_OUTPUT_HEADER)
message(SEND_ERROR "Lemon target `${LemonTarget}' does not exists.")
endif()
set_source_files_properties(${RE2C_${RE2CTarget}_OUTPUTS}
PROPERTIES OBJECT_DEPENDS ${LEMON_${LemonTarget}_OUTPUT_HEADER})
endfunction(ADD_RE2C_LEMON_DEPENDENCY)
endif(NOT COMMAND ADD_RE2C_LEMON_DEPENDENCY)
#============================================================
endif()
include(FindPackageHandleStandardArgs)
find_package_handle_standard_args(RE2C REQUIRED_VARS RE2C_EXECUTABLE
VERSION_VAR RE2C_VERSION)
# RE2C_Util.cmake ends here
# Local Variables:
# tab-width: 8
# mode: cmake
# indent-tabs-mode: t
# End:
# ex: shiftwidth=2 tabstop=8