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[20060118] Zlib, kernel sources and src/common (Updated)
Christos Zoulas has merged a new version of the Zlib compression library into NetBSD. As the library is not only used in userland by gzip(1) and friends but also inside the kernel e.g. for PPP compression and in the bootloaders to load compressed kernels. To not have multiple copies of the same sources, it was moved into src/common.

This is important to note, as it is no longer sufficient to just grab src/sys to build a kernel, but src/common is also needed if you need to build something that uses zlib, like bootloaders (src/sys/arch/*/stand) and various kernel options (PPP, IPsec, OpenCrypto, VND_COMPRESSION).

Update: Actually the above is not true - Christos told me that ``there is a separate copy of zlib in /usr/src/sys/net; this is used for ppp and it cannot be merged with the current zlib because the old one is hacked to do packetized mode that pppd needs and the new one is too different to apply the same hacks. Before we had 3 copies of zlib; now we have 2.'' Close...

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