On Tue, Oct 12, 2021 at 01:22:50PM +0300, Alexander Kuzmenkov wrote: > I noticed that `make install` updates modification time for all > installed headers. This leads to recompilation of all dependent > objects, which is inconvenient for example when working on a > third-party extension. A way to solve this would be to pass > `INSTALL="install -p"` to `configure`, to make `install` preserve the > timestamp. After this, a new problem arises -- the > `src/include/Makefile` doesn't use `install` for all headers, but > instead uses `cp`. This patch adds `-p` switch to `cp` invocation in > these files, to make it preserve timestamps. Combined with the > aforementioned install flag, it allows a developer to hack on both > postgres and a third-party extension at the same time, without the > unneeded recompilation.
The use of cp instead of $(INSTALL_DATA) for the installation of the headers comes from a703269, back from 2005. How do numbers compare today, 16 years later? -- Michael
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