kou opened a new pull request, #35924:
URL: https://github.com/apache/arrow/pull/35924
### Rationale for this change
`-DCMAKE_CXX_FLAGS_RELEASE=-O...` works with #15022 but
`-DCMAKE_CXX_FLAGS_DEBUG=-O...` and
`-DCMAKE_CXX_FLAGS_RELWITHDEBINFO=-O...` don't work. Because we always
specify `-O0` for Debug and RelWithDebInfo.
### What changes are included in this PR?
These changes don't specify optimization levels for Debug and RelWithDebInfo
because optimization flags we specified are the same as the default one. So
user specified `CMAKE_CXX_FLAGS_DEBUG=-O...` and
`CMAKE_CXX_FLAGS_RELWITHDEBINFO=-O...` are used.
In addition, `ARROW_C_FLAGS_${CONFIG}` and `ARROW_CXX_FLAGS_${CONFIG}` are
introduced. Users can also use `-DARROW_CXX_FLAGS_DEBUG=-O...` instead of
`-DCMAKE_CXX_FLAGS_DEBUG=-O...`.
### Are these changes tested?
Yes.
### Are there any user-facing changes?
Yes.
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