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Improvement: Expose T8CODE_VTK_VERSION_USED and T8_VTK_VERSION_USED to linking libraries. #2099

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Merged
Davknapp merged 1 commit into from
Jan 19, 2026
Merged

Improvement: Expose T8CODE_VTK_VERSION_USED and T8_VTK_VERSION_USED to linking libraries. #2099

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6 changes: 5 additions & 1 deletion src/CMakeLists.txt
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Original file line number Diff line number Diff line change
Expand Up @@ -84,7 +84,11 @@ if ( T8CODE_ENABLE_MPI )
endif()

if( T8CODE_ENABLE_VTK )
target_compile_definitions( T8 PUBLIC T8_VTK_VERSION_USED="${VTK_MAJOR_VERSION}.${VTK_MINOR_VERSION}" )
set (T8CODE_VTK_VERSION_USED "${VTK_MAJOR_VERSION}.${VTK_MINOR_VERSION}")
# Define T8_VTK_VERSION_USED for internal and external use in source files.
# Note, external libraries linking against t8code (i.e. using find_package ( T8CODE REQUIRED )) can
# use T8_VTK_VERSION_USED in source code and T8CODE_VTK_VERSION_USED (defined in config.cmake.in) in their CMake scripts.
target_compile_definitions( T8 PUBLIC T8_VTK_VERSION_USED="${T8CODE_VTK_VERSION_USED}" )
target_compile_definitions( T8 PUBLIC T8_ENABLE_VTK=1 )
target_include_directories( T8 PUBLIC ${VTK_INCLUDE_DIR} )
target_link_libraries( T8 PUBLIC ${VTK_LIBRARIES} )
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3 changes: 3 additions & 0 deletions src/config.cmake.in
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Original file line number Diff line number Diff line change
Expand Up @@ -19,6 +19,9 @@ set( T8CODE_USE_SYSTEM_P4EST @T8CODE_USE_SYSTEM_P4EST@ )

if(T8CODE_ENABLE_VTK)
find_dependency(VTK)
# Expose the variable T8CODE_VTK_VERSION_USED to external CMake scripts linking against t8code
# for example with find_package ( T8CODE REQUIRED )
set (T8CODE_VTK_VERSION_USED "@T8CODE_VTK_VERSION_USED@")
endif()

include( "${CMAKE_CURRENT_LIST_DIR}/@PROJECT_NAME@-targets.cmake" )
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