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pacciani/cmake/FindRagel.cmake

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CMake
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2017-10-12 22:36:56 +02:00
# Copyright 2017 the Monicelli project authors. All rights reserved.
# Use of this source code is governed by a GPLv3 license, see LICENSE.txt.
find_program(RAGEL ragel)
if (${RAGEL} STREQUAL "RAGEL-NOTFOUND")
message(FATAL_ERROR "Please install ragel to compile Monicelli.")
else()
message(STATUS "Found ragel: ${RAGEL}")
endif()
function(add_ragel_library name ragel_source)
set(generated_source "${ragel_source}.cpp")
set(extra_sources "${ARGN}")
add_custom_command(
OUTPUT "${generated_source}"
MAIN_DEPENDENCY "${ragel_source}"
COMMAND ${RAGEL} -G2 "${CMAKE_CURRENT_SOURCE_DIR}/${ragel_source}" -o "${generated_source}"
WORKING_DIRECTORY "${CMAKE_CURRENT_BINARY_DIR}"
VERBATIM
)
add_library(${name} "${generated_source}" "${extra_sources}")
set_target_properties(${name}
PROPERTIES
CXX_STANDARD 11
CXX_STANDARD_REQUIRED true
)
# The lexer uses implicit fallthroughs all over, but it's OK.
target_compile_options(${name} PRIVATE -Wno-implicit-fallthrough)
target_include_directories(${name} PUBLIC ${CMAKE_CURRENT_SOURCE_DIR})
endfunction()