mirror of
https://github.com/panda3d/panda3d.git
synced 2025-10-05 11:28:17 -04:00
76 lines
2.2 KiB
CMake
76 lines
2.2 KiB
CMake
# Filename: AddFlexTarget.cmake
|
|
# Description: This file defines the function add_flex_target which instructs
|
|
# cmake to use flex on an input .lxx file. If flex is not available on
|
|
# the system, add_flex_target tries to use .prebuilt .cxx files instead.
|
|
#
|
|
# Usage:
|
|
# add_flex_target(output_cxx input_lxx [DEFINES output_h] [PREFIX prefix])
|
|
#
|
|
|
|
# Define add_flex_target()
|
|
function(add_flex_target output_cxx input_lxx)
|
|
set(arguments "")
|
|
set(outputs "${output_cxx}")
|
|
set(keyword "")
|
|
|
|
# Parse the extra arguments to the function.
|
|
foreach(arg ${ARGN})
|
|
if(arg STREQUAL "DEFINES")
|
|
set(keyword "DEFINES")
|
|
elseif(arg STREQUAL "PREFIX")
|
|
set(keyword "PREFIX")
|
|
elseif(arg STREQUAL "CASE_INSENSITIVE")
|
|
set(arguments ${arguments} -i)
|
|
|
|
elseif(keyword STREQUAL "PREFIX")
|
|
set(arguments ${arguments} -P "${arg}")
|
|
elseif(keyword STREQUAL "DEFINES")
|
|
set(arguments ${arguments} --header-file="${arg}")
|
|
list(APPEND outputs "${arg}")
|
|
|
|
else()
|
|
message(SEND_ERROR "Unexpected argument ${arg} to add_flex_target")
|
|
endif()
|
|
endforeach()
|
|
|
|
if(keyword STREQUAL arg AND NOT keyword STREQUAL "")
|
|
message(SEND_ERROR "Expected argument after ${keyword}")
|
|
endif()
|
|
|
|
if(HAVE_FLEX)
|
|
get_source_file_property(input_lxx "${input_lxx}" LOCATION)
|
|
|
|
# If we have flex, we can of course just run it.
|
|
add_custom_command(
|
|
OUTPUT ${outputs}
|
|
COMMAND ${FLEX_EXECUTABLE}
|
|
-o "${output_cxx}" ${arguments}
|
|
"${input_lxx}"
|
|
MAIN_DEPENDENCY "${input_lxx}"
|
|
)
|
|
|
|
else()
|
|
# Look for prebuilt versions of the outputs.
|
|
set(commands "")
|
|
set(depends "")
|
|
|
|
foreach(output ${outputs})
|
|
set(prebuilt_file "${output}.prebuilt")
|
|
get_filename_component(prebuilt_file "${prebuilt_file}" ABSOLUTE)
|
|
|
|
if(NOT EXISTS "${prebuilt_file}")
|
|
message(SEND_ERROR "Flex was not found and ${prebuilt_file} does not exist!")
|
|
endif()
|
|
|
|
list(APPEND depends "${prebuilt_file}")
|
|
set(commands ${commands} COMMAND ${CMAKE_COMMAND} -E copy ${prebuilt_file} ${output})
|
|
endforeach()
|
|
|
|
add_custom_command(
|
|
OUTPUT ${outputs}
|
|
${commands}
|
|
DEPENDS ${depends}
|
|
)
|
|
endif()
|
|
endfunction(add_flex_target)
|