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Merge pull request #556 from rbuch703/master

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Update CMake-generated headers only when their content changes
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Tom Finegan 2019-09-25 14:15:32 -07:00 committed by GitHub
commit e8daed7f06
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1 changed files with 8 additions and 3 deletions
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cmake/draco_features.cmake
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@ -44,13 +44,18 @@ endmacro()
# Function for generating draco_features.h. # Function for generating draco_features.h.
function(draco_generate_features_h) function(draco_generate_features_h)
file(WRITE "${draco_features_file_name}" file(WRITE "${draco_features_file_name}.new"
"// GENERATED FILE -- DO NOT EDIT\n\n" "#ifndef DRACO_FEATURES_H_\n" "// GENERATED FILE -- DO NOT EDIT\n\n" "#ifndef DRACO_FEATURES_H_\n"
"#define DRACO_FEATURES_H_\n\n") "#define DRACO_FEATURES_H_\n\n")
foreach(feature ${draco_features_list}) foreach(feature ${draco_features_list})
file(APPEND "${draco_features_file_name}" "#define ${feature}\n") file(APPEND "${draco_features_file_name}.new" "#define ${feature}\n")
endforeach() endforeach()
file(APPEND "${draco_features_file_name}" "\n#endif // DRACO_FEATURES_H_") file(APPEND "${draco_features_file_name}.new" "\n#endif // DRACO_FEATURES_H_")
# Will replace ${draco_features_file_name} only if the file content has changed.
# This prevents forced Draco rebuilds after CMake runs.
configure_file("${draco_features_file_name}.new" "${draco_features_file_name}")
file(REMOVE "${draco_features_file_name}.new")
endfunction() endfunction()