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Merge topic 'swig-broken-dependency-scan'

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2ee10119 swig: fix incremental build in case of removed interface files

Acked-by: Kitware Robot <kwrobot@kitware.com>
Merge-request: !1457
This commit is contained in:
Brad King 2017-11-13 14:53:44 +00:00 committed by Kitware Robot
commit ac38bb3aa6
1 changed files with 34 additions and 1 deletions
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35
Modules/UseSWIG.cmake
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@ -201,10 +201,32 @@ macro(SWIG_ADD_SOURCE_TO_MODULE name outfiles infile)
if(SWIG_MODULE_${name}_EXTRA_FLAGS)
set(swig_extra_flags ${swig_extra_flags} ${SWIG_MODULE_${name}_EXTRA_FLAGS})
endif()
# IMPLICIT_DEPENDS below can not handle situations where a dependent file is
# removed. We need an extra step with timestamp and custom target, see #16830
# As this is needed only for Makefile generator do it conditionally
if(CMAKE_GENERATOR MATCHES "Make")
get_filename_component(swig_generated_timestamp
"${swig_generated_file_fullname}" NAME_WE)
set(swig_gen_target gen_${swig_generated_timestamp})
set(swig_generated_timestamp
"${swig_outdir}/${swig_generated_timestamp}.stamp")
set(swig_custom_output ${swig_generated_timestamp})
set(swig_custom_products
BYPRODUCTS "${swig_generated_file_fullname}" ${swig_extra_generated_files})
set(swig_timestamp_command
COMMAND ${CMAKE_COMMAND} -E touch ${swig_generated_timestamp})
else()
set(swig_custom_output
"${swig_generated_file_fullname}" ${swig_extra_generated_files})
set(swig_custom_products)
set(swig_timestamp_command)
endif()
add_custom_command(
OUTPUT "${swig_generated_file_fullname}" ${swig_extra_generated_files}
OUTPUT ${swig_custom_output}
${swig_custom_products}
# Let's create the ${swig_outdir} at execution time, in case dir contains $(OutDir)
COMMAND ${CMAKE_COMMAND} -E make_directory ${swig_outdir}
${swig_timestamp_command}
COMMAND "${SWIG_EXECUTABLE}"
ARGS "-${SWIG_MODULE_${name}_SWIG_LANGUAGE_FLAG}"
${swig_source_file_flags}
@ -219,6 +241,13 @@ macro(SWIG_ADD_SOURCE_TO_MODULE name outfiles infile)
DEPENDS ${SWIG_MODULE_${name}_EXTRA_DEPS}
IMPLICIT_DEPENDS CXX "${swig_source_file_fullname}"
COMMENT "Swig source")
if(CMAKE_GENERATOR MATCHES "Make")
add_custom_target(${swig_gen_target} DEPENDS ${swig_generated_timestamp})
endif()
unset(swig_generated_timestamp)
unset(swig_custom_output)
unset(swig_custom_products)
unset(swig_timestamp_command)
set_source_files_properties("${swig_generated_file_fullname}" ${swig_extra_generated_files}
PROPERTIES GENERATED 1)
set(${outfiles} "${swig_generated_file_fullname}" ${swig_extra_generated_files})
@ -281,6 +310,10 @@ macro(SWIG_ADD_LIBRARY name)
${_SAM_TYPE}
${swig_generated_sources}
${swig_other_sources})
if(CMAKE_GENERATOR MATCHES "Make")
# see IMPLICIT_DEPENDS above
add_dependencies(${SWIG_MODULE_${name}_REAL_NAME} ${swig_gen_target})
endif()
if("${_SAM_TYPE}" STREQUAL "MODULE")
set_target_properties(${SWIG_MODULE_${name}_REAL_NAME} PROPERTIES NO_SONAME ON)
endif()