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| author | Nikos Mavrogiannopoulos <nmav@gnutls.org> | 2013-09-30 18:57:25 +0200 |
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| committer | Nikos Mavrogiannopoulos <nmav@gnutls.org> | 2013-09-30 18:57:25 +0200 |
| commit | 9090ac02cde85e5613bf88fda0b019dfcfbc0435 (patch) | |
| tree | 0801ccdd7fddba39b5ca26978597b7d5d459f60d /doc | |
| parent | f27d6be073c761463f01065733551dd498557820 (diff) | |
| download | gnutls-9090ac02cde85e5613bf88fda0b019dfcfbc0435.tar.gz | |
document the version macros
Diffstat (limited to 'doc')
| -rw-r--r-- | doc/cha-gtls-app.texi | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/doc/cha-gtls-app.texi b/doc/cha-gtls-app.texi index 789dc1c34f..b6bf4948e7 100644 --- a/doc/cha-gtls-app.texi +++ b/doc/cha-gtls-app.texi @@ -262,6 +262,16 @@ with the dynamic linker an old version is actually used. So you may want to check that the version is okay right after program start-up. See the function @funcref{gnutls_check_version}. +On the other hand, it is often desirable to support more than one +versions of the library. In that case you could utilize compile-time +feature checks using the the @code{GNUTLS_VERSION_NUMBER} macro. +For example, to conditionally add code for GnuTLS 3.2.1 or later, you may use: +@example +#if GNUTLS_VERSION_NUMBER >= 0x030201 + ... +#endif +@end example + @node Building the source @subsection Building the source |