Commit db3d8505 authored by Chris Davies's avatar Chris Davies Committed by Brad King

FindFLEX: Add a DEFINES_FILE option to specify flex-generated header (#15781)

parent c26ff8a9
......@@ -27,13 +27,17 @@
#
# ::
#
# FLEX_TARGET(Name FlexInput FlexOutput [COMPILE_FLAGS <string>])
# FLEX_TARGET(Name FlexInput FlexOutput
# [COMPILE_FLAGS <string>]
# [DEFINES_FILE <string>]
# )
#
# which creates a custom command to generate the <FlexOutput> file from
# the <FlexInput> file. If COMPILE_FLAGS option is specified, the next
# parameter is added to the flex command line. Name is an alias used to
# get details of this custom command. Indeed the macro defines the
# following variables:
# parameter is added to the flex command line. If flex is configured to
# output a header file, the DEFINES_FILE option may be used to specify its
# name. Name is an alias used to get details of this custom command.
# Indeed the macro defines the following variables:
#
# ::
#
......@@ -41,6 +45,7 @@
# FLEX_${Name}_OUTPUTS - the source file generated by the custom rule, an
# alias for FlexOutput
# FLEX_${Name}_INPUT - the flex source file, an alias for ${FlexInput}
# FLEX_${Name}_OUTPUT_HEADER - the header flex output, if any.
#
#
#
......@@ -147,11 +152,13 @@ if(FLEX_EXECUTABLE)
#============================================================
#
macro(FLEX_TARGET Name Input Output)
set(FLEX_TARGET_outputs "${Output}")
set(FLEX_EXECUTABLE_opts "")
set(FLEX_TARGET_PARAM_OPTIONS)
set(FLEX_TARGET_PARAM_ONE_VALUE_KEYWORDS
COMPILE_FLAGS
DEFINES_FILE
)
set(FLEX_TARGET_PARAM_MULTI_VALUE_KEYWORDS)
......@@ -163,7 +170,7 @@ if(FLEX_EXECUTABLE)
${ARGN}
)
set(FLEX_TARGET_usage "FLEX_TARGET(<Name> <Input> <Output> [COMPILE_FLAGS <string>]")
set(FLEX_TARGET_usage "FLEX_TARGET(<Name> <Input> <Output> [COMPILE_FLAGS <string>] [DEFINES_FILE <string>]")
if(NOT "${FLEX_TARGET_ARG_UNPARSED_ARGUMENTS}" STREQUAL "")
message(SEND_ERROR ${FLEX_TARGET_usage})
......@@ -172,8 +179,12 @@ if(FLEX_EXECUTABLE)
set(FLEX_EXECUTABLE_opts "${FLEX_TARGET_ARG_COMPILE_FLAGS}")
separate_arguments(FLEX_EXECUTABLE_opts)
endif()
if(NOT "${FLEX_TARGET_ARG_DEFINES_FILE}" STREQUAL "")
list(APPEND FLEX_TARGET_outputs "${FLEX_TARGET_ARG_DEFINES_FILE}")
list(APPEND FLEX_EXECUTABLE_opts --header-file=${FLEX_TARGET_ARG_DEFINES_FILE})
endif()
add_custom_command(OUTPUT ${Output}
add_custom_command(OUTPUT ${FLEX_TARGET_outputs}
COMMAND ${FLEX_EXECUTABLE}
ARGS ${FLEX_EXECUTABLE_opts} -o${Output} ${Input}
DEPENDS ${Input}
......@@ -184,6 +195,11 @@ if(FLEX_EXECUTABLE)
set(FLEX_${Name}_OUTPUTS ${Output})
set(FLEX_${Name}_INPUT ${Input})
set(FLEX_${Name}_COMPILE_FLAGS ${FLEX_EXECUTABLE_opts})
if("${FLEX_TARGET_ARG_DEFINES_FILE}" STREQUAL "")
set(FLEX_${Name}_OUTPUT_HEADER "")
else()
set(FLEX_${Name}_OUTPUT_HEADER ${FLEX_TARGET_ARG_DEFINES_FILE})
endif()
endif()
endmacro()
#============================================================
......
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