diff options
Diffstat (limited to 'docs/libcurl/ABI')
| -rw-r--r-- | docs/libcurl/ABI | 19 |
1 files changed, 13 insertions, 6 deletions
diff --git a/docs/libcurl/ABI b/docs/libcurl/ABI index 3ec0e04de..ef0caa6f2 100644 --- a/docs/libcurl/ABI +++ b/docs/libcurl/ABI @@ -7,16 +7,16 @@ libcurl's binary interface ABI - Application Binary Interface +---------------------------------- - First, allow me to define the word for this context: ABI describes the - low-level interface between an application program and a library. Calling - conventions, function arguments, return values, struct sizes/defines and - more. + "ABI" describes the low-level interface between an application program and a + library. Calling conventions, function arguments, return values, struct + sizes/defines and more. - For a longer description, see - http://en.wikipedia.org/wiki/Application_binary_interface + [Wikipedia has a longer description](http://en.wikipedia.org/wiki/Application_binary_interface) Upgrades +-------- In the vast majority of all cases, a typical libcurl upgrade does not break the ABI at all. Your application can remain using libcurl just as before, @@ -26,11 +26,13 @@ Upgrades it now is defined to work. Version Numbers +--------------- In libcurl land, you really can't tell by the libcurl version number if that libcurl is binary compatible or not with another libcurl version. Soname Bumps +------------ Whenever there are changes done to the library that will cause an ABI breakage, that may require your application to get attention or possibly be @@ -43,7 +45,11 @@ Soname Bumps During the first seven years of libcurl releases, there have only been four ABI breakages. + We are determined to bump the SONAME as rarely as possible. Ideally, we + never do it again. + Downgrades +---------- Going to an older libcurl version from one you're currently using can be a tricky thing. Mostly we add features and options to newer libcurls as that @@ -54,6 +60,7 @@ Downgrades soname, and then your application may need to adapt to the modified ABI. History +------- The previous major library soname number bumps (breaking backwards compatibility) have happened the following times: |