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[cmake] Make explicit that all dictionaries depend on Core.pcm #23207

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[cmake] Make explicit that all dictionaries depend on Core.pcm #23207

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[cmake] Make explicit that all dictionaries depends on Core.pcm
ferdymercury Aug 31, 2026
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[nfc] stray newline
ferdymercury Aug 31, 2026
8493d69
[cmake] avoid circular dependency
ferdymercury Aug 31, 2026
58fc8be
[cmake] fix placement
ferdymercury Aug 31, 2026
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remnant
ferdymercury Aug 31, 2026
46f9bab
Update cmake/modules/RootMacros.cmake
ferdymercury Aug 31, 2026
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33 changes: 18 additions & 15 deletions cmake/modules/RootMacros.cmake
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Original file line number Diff line number Diff line change
Expand Up @@ -621,21 +621,24 @@ function(ROOT_GENERATE_DICTIONARY dictionary)
endif()

#---Get the library and module dependencies-----------------
if(ARG_DEPENDENCIES)
foreach(dep ${ARG_DEPENDENCIES})
# Whether <dep> provides a dictionary/pcm is decided at generation time
# via $<TARGET_EXISTS:G__<dep>>, so the '-m' flag and the module-file
# dependency below are independent of configuration order and expand to
# nothing for a dictionary-less library.
set(dep_has_dict "$<TARGET_EXISTS:G__${dep}>")
set(dependent_pcm ${libprefix}${dep}_rdict.pcm)
if (runtime_cxxmodules AND NOT dep IN_LIST local_no_cxxmodules)
set(dependent_pcm ${dep}.pcm)
list(APPEND pcm_dependencies "$<${dep_has_dict}:$<TARGET_PROPERTY:${dep},ROOT_PCM_FILENAME>>")
endif()
set(newargs ${newargs} "$<${dep_has_dict}:-m>" "$<${dep_has_dict}:${dependent_pcm}>")
endforeach()
endif()
# Every dictionary implicitly depends on Core's pcm, except the one for Core itself.
if(ARG_MODULE AND NOT ARG_MODULE STREQUAL "Core")
list(INSERT ARG_DEPENDENCIES 0 Core)
list(REMOVE_DUPLICATES ARG_DEPENDENCIES)
endif()
foreach(dep ${ARG_DEPENDENCIES})
# Whether <dep> provides a dictionary/pcm is decided at generation time
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# via $<TARGET_EXISTS:G__<dep>>, so the '-m' flag and the module-file
# dependency below are independent of configuration order and expand to
# nothing for a dictionary-less library.
set(dep_has_dict "$<TARGET_EXISTS:G__${dep}>")
set(dependent_pcm ${libprefix}${dep}_rdict.pcm)
if (runtime_cxxmodules AND NOT dep IN_LIST local_no_cxxmodules)
set(dependent_pcm ${dep}.pcm)
list(APPEND pcm_dependencies "$<${dep_has_dict}:$<TARGET_PROPERTY:${dep},ROOT_PCM_FILENAME>>")
endif()
set(newargs ${newargs} "$<${dep_has_dict}:-m>" "$<${dep_has_dict}:${dependent_pcm}>")
endforeach()

if(cpp_module_file)
set(newargs -cxxmodule ${newargs})
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