eli-schwartz commented on issue #45853: URL: https://github.com/apache/arrow/issues/45853#issuecomment-2734986733
Maybe. I'd expect it to happen for cmake too, though. Timestamps are detected by the generated ninja / Makefiles. Instead of relying on `meson install` to internally run `ninja`, you can manually run ninja using `-d explain`, it will report tons of information about *why* each recompile happens. For example, if I run: ``` touch src/arrow/memory_pool.h ninja -C builddir/ -d explain ```` I get this output: ``` ninja: Entering directory `builddir/' ninja explain: output src/arrow/libarrow.so.p/array_array_dict.cc.o older than most recent input ../src/arrow/memory_pool.h (1742339537132928205 vs 1742342592066759585) ninja explain: src/arrow/libarrow.so.p/array_array_dict.cc.o is dirty ninja explain: output src/arrow/libarrow.so.p/array_array_nested.cc.o older than most recent input ../src/arrow/memory_pool.h (1742339509653413840 vs 1742342592066759585) ninja explain: src/arrow/libarrow.so.p/array_array_nested.cc.o is dirty ninja explain: output src/arrow/libarrow.so.p/array_array_run_end.cc.o older than most recent input ../src/arrow/memory_pool.h (1742339496636979683 vs 1742342592066759585) ninja explain: src/arrow/libarrow.so.p/array_array_run_end.cc.o is dirty ninja explain: output src/arrow/libarrow.so.p/array_builder_adaptive.cc.o older than most recent input ../src/arrow/memory_pool.h (1742339492630384914 vs 1742342592066759585) ninja explain: src/arrow/libarrow.so.p/array_builder_adaptive.cc.o is dirty ninja explain: output src/arrow/libarrow.so.p/array_builder_base.cc.o older than most recent input ../src/arrow/memory_pool.h (1742339502263545644 vs 1742342592066759585) ninja explain: src/arrow/libarrow.so.p/array_builder_base.cc.o is dirty ninja explain: output src/arrow/libarrow.so.p/array_builder_binary.cc.o older than most recent input ../src/arrow/memory_pool.h (1742339497263635118 vs 1742342592066759585) ninja explain: src/arrow/libarrow.so.p/array_builder_binary.cc.o is dirty ninja explain: output src/arrow/libarrow.so.p/array_builder_decimal.cc.o older than most recent input ../src/arrow/memory_pool.h (1742339496636979683 vs 1742342592066759585) ninja explain: src/arrow/libarrow.so.p/array_builder_decimal.cc.o is dirty ninja explain: output src/arrow/libarrow.so.p/array_builder_dict.cc.o older than most recent input ../src/arrow/memory_pool.h (1742339517653271740 vs 1742342592066759585) ninja explain: src/arrow/libarrow.so.p/array_builder_dict.cc.o is dirty ninja explain: output src/arrow/libarrow.so.p/array_builder_run_end.cc.o older than most recent input ../src/arrow/memory_pool.h (1742339499873588382 vs 1742342592066759585) ninja explain: src/arrow/libarrow.so.p/array_builder_run_end.cc.o is dirty ninja explain: output src/arrow/libarrow.so.p/array_builder_nested.cc.o older than most recent input ../src/arrow/memory_pool.h (1742339507886778635 vs 1742342592066759585) ninja explain: src/arrow/libarrow.so.p/array_builder_nested.cc.o is dirty ninja explain: output src/arrow/libarrow.so.p/array_builder_primitive.cc.o older than most recent input ../src/arrow/memory_pool.h (1742339504743501353 vs 1742342592066759585) ninja explain: src/arrow/libarrow.so.p/array_builder_primitive.cc.o is dirty ninja explain: output src/arrow/libarrow.so.p/array_builder_union.cc.o older than most recent input ../src/arrow/memory_pool.h (1742339506153476199 vs 1742342592066759585) ninja explain: src/arrow/libarrow.so.p/array_builder_union.cc.o is dirty ninja explain: output src/arrow/libarrow.so.p/array_concatenate.cc.o older than most recent input ../src/arrow/memory_pool.h (1742339514413329218 vs 1742342592066759585) ninja explain: src/arrow/libarrow.so.p/array_concatenate.cc.o is dirty ninja explain: output src/arrow/libarrow.so.p/array_diff.cc.o older than most recent input ../src/arrow/memory_pool.h (1742339541209523414 vs 1742342592066759585) ninja explain: src/arrow/libarrow.so.p/array_diff.cc.o is dirty ninja explain: output src/arrow/libarrow.so.p/array_util.cc.o older than most recent input ../src/arrow/memory_pool.h (1742339536462939963 vs 1742342592066759585) ninja explain: src/arrow/libarrow.so.p/array_util.cc.o is dirty ninja explain: output src/arrow/libarrow.so.p/compute_api_aggregate.cc.o older than most recent input ../src/arrow/memory_pool.h (1742339535356292728 vs 1742342592066759585) ninja explain: src/arrow/libarrow.so.p/compute_api_aggregate.cc.o is dirty ninja explain: output src/arrow/libarrow.so.p/compute_api_scalar.cc.o older than most recent input ../src/arrow/memory_pool.h (1742339574428946538 vs 1742342592066759585) ninja explain: src/arrow/libarrow.so.p/compute_api_scalar.cc.o is dirty ninja explain: output src/arrow/libarrow.so.p/compute_api_vector.cc.o older than most recent input ../src/arrow/memory_pool.h (1742339549916037961 vs 1742342592066759585) ninja explain: src/arrow/libarrow.so.p/compute_api_vector.cc.o is dirty ninja explain: output src/arrow/libarrow.so.p/compute_cast.cc.o older than most recent input ../src/arrow/memory_pool.h (1742339534612972451 vs 1742342592066759585) ninja explain: src/arrow/libarrow.so.p/compute_cast.cc.o is dirty ninja explain: output src/arrow/libarrow.so.p/compute_exec.cc.o older than most recent input ../src/arrow/memory_pool.h (1742339539829547586 vs 1742342592066759585) ninja explain: src/arrow/libarrow.so.p/compute_exec.cc.o is dirty ninja explain: output src/arrow/libarrow.so.p/compute_expression.cc.o older than most recent input ../src/arrow/memory_pool.h (1742339556632587731 vs 1742342592066759585) ninja explain: src/arrow/libarrow.so.p/compute_expression.cc.o is dirty ninja explain: output src/arrow/libarrow.so.p/compute_function.cc.o older than most recent input ../src/arrow/memory_pool.h (1742339545556114055 vs 1742342592066759585) ninja explain: src/arrow/libarrow.so.p/compute_function.cc.o is dirty ninja explain: output src/arrow/libarrow.so.p/compute_function_internal.cc.o older than most recent input ../src/arrow/memory_pool.h (1742339545962773616 vs 1742342592066759585) ninja explain: src/arrow/libarrow.so.p/compute_function_internal.cc.o is dirty ninja explain: output src/arrow/libarrow.so.p/compute_kernel.cc.o older than most recent input ../src/arrow/memory_pool.h (1742339545602779906 vs 1742342592066759585) ninja explain: src/arrow/libarrow.so.p/compute_kernel.cc.o is dirty ninja explain: output src/arrow/libarrow.so.p/compute_registry.cc.o older than most recent input ../src/arrow/memory_pool.h (1742339548799390768 vs 1742342592066759585) ninja explain: src/arrow/libarrow.so.p/compute_registry.cc.o is dirty ninja explain: output src/arrow/libarrow.so.p/compute_kernels_chunked_internal.cc.o older than most recent input ../src/arrow/memory_pool.h (1742339547232751439 vs 1742342592066759585) ninja explain: src/arrow/libarrow.so.p/compute_kernels_chunked_internal.cc.o is dirty ninja explain: output src/arrow/libarrow.so.p/compute_kernels_codegen_internal.cc.o older than most recent input ../src/arrow/memory_pool.h (1742339550632692136 vs 1742342592066759585) ninja explain: src/arrow/libarrow.so.p/compute_kernels_codegen_internal.cc.o is dirty ninja explain: output src/arrow/libarrow.so.p/compute_kernels_ree_util_internal.cc.o older than most recent input ../src/arrow/memory_pool.h (1742339550089368273 vs 1742342592066759585) ninja explain: src/arrow/libarrow.so.p/compute_kernels_ree_util_internal.cc.o is dirty ninja explain: output src/arrow/libarrow.so.p/compute_kernels_scalar_cast_boolean.cc.o older than most recent input ../src/arrow/memory_pool.h (1742339562082493166 vs 1742342592066759585) ninja explain: src/arrow/libarrow.so.p/compute_kernels_scalar_cast_boolean.cc.o is dirty ninja explain: output src/arrow/libarrow.so.p/compute_kernels_scalar_cast_dictionary.cc.o older than most recent input ../src/arrow/memory_pool.h (1742339557235910584 vs 1742342592066759585) ninja explain: src/arrow/libarrow.so.p/compute_kernels_scalar_cast_dictionary.cc.o is dirty ninja explain: output src/arrow/libarrow.so.p/compute_kernels_scalar_cast_extension.cc.o older than most recent input ../src/arrow/memory_pool.h (1742339555552606502 vs 1742342592066759585) ninja explain: src/arrow/libarrow.so.p/compute_kernels_scalar_cast_extension.cc.o is dirty ninja explain: output src/arrow/libarrow.so.p/compute_kernels_scalar_cast_internal.cc.o older than most recent input ../src/arrow/memory_pool.h (1742339562032494032 vs 1742342592066759585) ninja explain: src/arrow/libarrow.so.p/compute_kernels_scalar_cast_internal.cc.o is dirty ninja explain: output src/arrow/libarrow.so.p/compute_kernels_scalar_cast_nested.cc.o older than most recent input ../src/arrow/memory_pool.h (1742339572135652726 vs 1742342592066759585) ninja explain: src/arrow/libarrow.so.p/compute_kernels_scalar_cast_nested.cc.o is dirty ninja explain: output src/arrow/libarrow.so.p/compute_kernels_scalar_cast_numeric.cc.o older than most recent input ../src/arrow/memory_pool.h (1742339652780954714 vs 1742342592066759585) ninja explain: src/arrow/libarrow.so.p/compute_kernels_scalar_cast_numeric.cc.o is dirty ninja explain: output src/arrow/libarrow.so.p/compute_kernels_scalar_cast_string.cc.o older than most recent input ../src/arrow/memory_pool.h (1742339630104666734 vs 1742342592066759585) ninja explain: src/arrow/libarrow.so.p/compute_kernels_scalar_cast_string.cc.o is dirty ninja explain: output src/arrow/libarrow.so.p/compute_kernels_scalar_cast_temporal.cc.o older than most recent input ../src/arrow/memory_pool.h (1742339587008730518 vs 1742342592066759585) ninja explain: src/arrow/libarrow.so.p/compute_kernels_scalar_cast_temporal.cc.o is dirty ninja explain: output src/arrow/libarrow.so.p/compute_kernels_util_internal.cc.o older than most recent input ../src/arrow/memory_pool.h (1742339563469135813 vs 1742342592066759585) ninja explain: src/arrow/libarrow.so.p/compute_kernels_util_internal.cc.o is dirty ninja explain: output src/arrow/libarrow.so.p/compute_kernels_vector_hash.cc.o older than most recent input ../src/arrow/memory_pool.h (1742339608975023058 vs 1742342592066759585) ninja explain: src/arrow/libarrow.so.p/compute_kernels_vector_hash.cc.o is dirty ninja explain: output src/arrow/libarrow.so.p/compute_kernels_vector_selection.cc.o older than most recent input ../src/arrow/memory_pool.h (1742339578408878053 vs 1742342592066759585) ninja explain: src/arrow/libarrow.so.p/compute_kernels_vector_selection.cc.o is dirty ninja explain: output src/arrow/libarrow.so.p/compute_kernels_vector_selection_filter_internal.cc.o older than most recent input ../src/arrow/memory_pool.h (1742339590518670480 vs 1742342592066759585) ninja explain: src/arrow/libarrow.so.p/compute_kernels_vector_selection_filter_internal.cc.o is dirty ninja explain: output src/arrow/libarrow.so.p/compute_kernels_vector_selection_internal.cc.o older than most recent input ../src/arrow/memory_pool.h (1742339602908459333 vs 1742342592066759585) ninja explain: src/arrow/libarrow.so.p/compute_kernels_vector_selection_internal.cc.o is dirty ninja explain: output src/arrow/libarrow.so.p/compute_kernels_vector_selection_take_internal.cc.o older than most recent input ../src/arrow/memory_pool.h (1742339601381818618 vs 1742342592066759585) ninja explain: src/arrow/libarrow.so.p/compute_kernels_vector_selection_take_internal.cc.o is dirty ninja explain: output src/arrow/libarrow.so.p/io_buffered.cc.o older than most recent input ../src/arrow/memory_pool.h (1742339581442159280 vs 1742342592066759585) ninja explain: src/arrow/libarrow.so.p/io_buffered.cc.o is dirty ninja explain: output src/arrow/libarrow.so.p/io_compressed.cc.o older than most recent input ../src/arrow/memory_pool.h (1742339589428689113 vs 1742342592066759585) ninja explain: src/arrow/libarrow.so.p/io_compressed.cc.o is dirty ninja explain: output src/arrow/libarrow.so.p/io_file.cc.o older than most recent input ../src/arrow/memory_pool.h (1742339595945244515 vs 1742342592066759585) ninja explain: src/arrow/libarrow.so.p/io_file.cc.o is dirty ninja explain: output src/arrow/libarrow.so.p/io_hdfs.cc.o older than most recent input ../src/arrow/memory_pool.h (1742339592551969076 vs 1742342592066759585) ninja explain: src/arrow/libarrow.so.p/io_hdfs.cc.o is dirty ninja explain: output src/arrow/libarrow.so.p/io_memory.cc.o older than most recent input ../src/arrow/memory_pool.h (1742339602188471569 vs 1742342592066759585) ninja explain: src/arrow/libarrow.so.p/io_memory.cc.o is dirty ninja explain: output src/arrow/libarrow.so.p/util_align_util.cc.o older than most recent input ../src/arrow/memory_pool.h (1742339611728309766 vs 1742342592066759585) ninja explain: src/arrow/libarrow.so.p/util_align_util.cc.o is dirty ninja explain: output src/arrow/libarrow.so.p/util_async_util.cc.o older than most recent input ../src/arrow/memory_pool.h (1742339615338248723 vs 1742342592066759585) ninja explain: src/arrow/libarrow.so.p/util_async_util.cc.o is dirty ninja explain: output src/arrow/libarrow.so.p/util_bitmap_ops.cc.o older than most recent input ../src/arrow/memory_pool.h (1742339616504895685 vs 1742342592066759585) ninja explain: src/arrow/libarrow.so.p/util_bitmap_ops.cc.o is dirty ninja explain: output src/arrow/libarrow.so.p/util_byte_size.cc.o older than most recent input ../src/arrow/memory_pool.h (1742339622674791642 vs 1742342592066759585) ninja explain: src/arrow/libarrow.so.p/util_byte_size.cc.o is dirty ninja explain: output src/arrow/libarrow.so.p/util_fixed_width_internal.cc.o older than most recent input ../src/arrow/memory_pool.h (1742339624374763027 vs 1742342592066759585) ninja explain: src/arrow/libarrow.so.p/util_fixed_width_internal.cc.o is dirty ninja explain: output src/arrow/libarrow.so.p/util_future.cc.o older than most recent input ../src/arrow/memory_pool.h (1742339629911336646 vs 1742342592066759585) ninja explain: src/arrow/libarrow.so.p/util_future.cc.o is dirty ninja explain: output src/arrow/libarrow.so.p/util_hashing.cc.o older than most recent input ../src/arrow/memory_pool.h (1742339625534743512 vs 1742342592066759585) ninja explain: src/arrow/libarrow.so.p/util_hashing.cc.o is dirty ninja explain: output src/arrow/libarrow.so.p/util_list_util.cc.o older than most recent input ../src/arrow/memory_pool.h (1742339629791338660 vs 1742342592066759585) ninja explain: src/arrow/libarrow.so.p/util_list_util.cc.o is dirty ninja explain: output src/arrow/libarrow.so.p/util_ree_util.cc.o older than most recent input ../src/arrow/memory_pool.h (1742339638944518663 vs 1742342592066759585) ninja explain: src/arrow/libarrow.so.p/util_ree_util.cc.o is dirty ninja explain: output src/arrow/libarrow.so.p/util_thread_pool.cc.o older than most recent input ../src/arrow/memory_pool.h (1742339642013713867 vs 1742342592066759585) ninja explain: src/arrow/libarrow.so.p/util_thread_pool.cc.o is dirty ninja explain: output src/arrow/libarrow.so.p/util_tracing.cc.o older than most recent input ../src/arrow/memory_pool.h (1742339638661190067 vs 1742342592066759585) ninja explain: src/arrow/libarrow.so.p/util_tracing.cc.o is dirty ninja explain: output src/arrow/libarrow.so.p/memory_pool.cc.o older than most recent input ../src/arrow/memory_pool.h (1742339648717688961 vs 1742342592066759585) ninja explain: src/arrow/libarrow.so.p/memory_pool.cc.o is dirty ninja explain: output src/arrow/libarrow.so.p/builder.cc.o older than most recent input ../src/arrow/memory_pool.h (1742339728023057047 vs 1742342592066759585) ninja explain: src/arrow/libarrow.so.p/builder.cc.o is dirty ninja explain: output src/arrow/libarrow.so.p/buffer.cc.o older than most recent input ../src/arrow/memory_pool.h (1742339652210964186 vs 1742342592066759585) ninja explain: src/arrow/libarrow.so.p/buffer.cc.o is dirty ninja explain: output src/arrow/libarrow.so.p/record_batch.cc.o older than most recent input ../src/arrow/memory_pool.h (1742339679263850442 vs 1742342592066759585) ninja explain: src/arrow/libarrow.so.p/record_batch.cc.o is dirty ninja explain: output src/arrow/libarrow.so.p/scalar.cc.o older than most recent input ../src/arrow/memory_pool.h (1742339733276305804 vs 1742342592066759585) ninja explain: src/arrow/libarrow.so.p/scalar.cc.o is dirty ninja explain: output src/arrow/libarrow.so.p/table.cc.o older than most recent input ../src/arrow/memory_pool.h (1742339676554655035 vs 1742342592066759585) ninja explain: src/arrow/libarrow.so.p/table.cc.o is dirty ninja explain: output src/arrow/libarrow.so.p/table_builder.cc.o older than most recent input ../src/arrow/memory_pool.h (1742339666714057206 vs 1742342592066759585) ninja explain: src/arrow/libarrow.so.p/table_builder.cc.o is dirty ninja explain: output src/arrow/libarrow.so.p/tensor_csf_converter.cc.o older than most recent input ../src/arrow/memory_pool.h (1742339674423930054 vs 1742342592066759585) ninja explain: src/arrow/libarrow.so.p/tensor_csf_converter.cc.o is dirty ninja explain: output src/arrow/libarrow.so.p/type.cc.o older than most recent input ../src/arrow/memory_pool.h (1742339700193507988 vs 1742342592066759585) ninja explain: src/arrow/libarrow.so.p/type.cc.o is dirty ninja explain: output src/arrow/libarrow.so.p/c_bridge.cc.o older than most recent input ../src/arrow/memory_pool.h (1742339698160207796 vs 1742342592066759585) ninja explain: src/arrow/libarrow.so.p/c_bridge.cc.o is dirty ninja explain: src/arrow/libarrow.so is dirty [69/69] Linking target src/arrow/libarrow.so ``` -- This is an automated message from the Apache Git Service. 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