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967deb43f8
Drop the pre-release part from this text as we don't use that in practise since many years. Update the phrasing to reflect our more strict interpretation: http://curl.haxx.se/mail/lib-2011-08/0064.html
61 lines
2.5 KiB
Plaintext
61 lines
2.5 KiB
Plaintext
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Version Numbers and Releases
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Curl is not only curl. Curl is also libcurl. They're actually individually
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versioned, but they mostly follow each other rather closely.
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The version numbering is always built up using the same system:
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X.Y[.Z]
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Where
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X is main version number
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Y is release number
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Z is patch number
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One of these numbers will get bumped in each new release. The numbers to the
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right of a bumped number will be reset to zero. If Z is zero, it may not be
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included in the version number.
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The main version number will get bumped when *really* big, world colliding
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changes are made. The release number is bumped when changes are performed or
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things/features are added. The patch number is bumped when the changes are
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mere bugfixes.
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It means that after release 1.2.3, we can release 2.0 if something really big
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has been made, 1.3 if not that big changes were made or 1.2.4 if mostly bugs
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were fixed.
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Bumping, as in increasing the number with 1, is unconditionally only
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affecting one of the numbers (except the ones to the right of it, that may be
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set to zero). 1 becomes 2, 3 becomes 4, 9 becomes 10, 88 becomes 89 and 99
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becomes 100. So, after 1.2.9 comes 1.2.10. After 3.99.3, 3.100 might come.
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All original curl source release archives are named according to the libcurl
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version (not according to the curl client version that, as said before, might
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differ).
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As a service to any application that might want to support new libcurl
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features while still being able to build with older versions, all releases
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have the libcurl version stored in the curl/curlver.h file using a static
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numbering scheme that can be used for comparison. The version number is
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defined as:
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#define LIBCURL_VERSION_NUM 0xXXYYZZ
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Where XX, YY and ZZ are the main version, release and patch numbers in
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hexadecimal. All three number fields are always represented using two digits
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(eight bits each). 1.2 would appear as "0x010200" while version 9.11.7
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appears as "0x090b07".
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This 6-digit hexadecimal number is always a greater number in a more recent
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release. It makes comparisons with greater than and less than work.
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This number is also available as three separate defines:
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LIBCURL_VERSION_MAJOR, LIBCURL_VERSION_MINOR and LIBCURL_VERSION_PATCH.
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