sway/CMake/FindA2X.cmake
Drew DeVault a246e9b4c7 Find a2x through CMake
Fixes #63
2015-08-18 07:06:07 -04:00

76 lines
2.2 KiB
CMake

#
# (c)2015 KiCad Developers
# (c)2015 Brian Sidebotham <brian.sidebotham@gmail.com>
#
# CMake module to find a2x (part of the asciidoc toolchain).
#
# Variables generated:
#
# A2X_FOUND true when A2X_COMMAND is valid
# A2X_COMMAND The command to run a2x (may be a list including an interpreter)
# A2X_VERSION The a2x version that has been found
#
# Have a go at finding a a2x executable
find_program( A2X_PROGRAM a2x )
# Found something, attempt to try and use it...
if( A2X_PROGRAM )
execute_process(
COMMAND ${A2X_PROGRAM} --version
OUTPUT_VARIABLE _OUT
ERROR_VARIABLE _ERR
RESULT_VARIABLE _RES
OUTPUT_STRIP_TRAILING_WHITESPACE )
# If it worked, set the A2X_COMMAND
if( _RES MATCHES 0 )
set( A2X_COMMAND "${A2X_PROGRAM}" )
endif()
endif()
# If nothing could be found, test to see if we can just find the script file,
# that we'll then run with the python interpreter
if( NOT A2X_COMMAND )
find_file( A2X_SCRIPT a2x.py )
if( A2X_SCRIPT )
# Find the python interpreter quietly
if( NOT PYTHONINTERP_FOUND )
find_package( PYTHONINTERP QUIET )
endif()
if( NOT PYTHONINTERP_FOUND )
# Python's not available so can't find a2x...
set( A2X_COMMAND "" )
else()
# Build the python based command
set( A2X_COMMAND "${PYTHON_EXECUTABLE}" "${A2X_SCRIPT}" )
execute_process(
COMMAND ${A2X_COMMAND} --version
OUTPUT_VARIABLE _OUT
ERROR_VARIABLE _ERR
RESULT_VARIABLE _RES
OUTPUT_STRIP_TRAILING_WHITESPACE )
# If it still can't be run, then give up
if( NOT _RES MATCHES 0 )
set( A2X_COMMAND "" )
endif()
endif()
endif()
endif()
# If we've found a command that works, check the version
if( A2X_COMMAND )
string(REGEX REPLACE ".*a2x[^0-9.]*\([0-9.]+\).*" "\\1" A2X_VERSION "${_OUT}")
endif()
# Generate the *_FOUND as necessary, etc.
include( FindPackageHandleStandardArgs )
find_package_handle_standard_args(
A2X
REQUIRED_VARS A2X_COMMAND
VERSION_VAR A2X_VERSION )