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Diffstat (limited to 'doc/doc-docbook')
| -rw-r--r-- | doc/doc-docbook/spec.xfpt | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/doc/doc-docbook/spec.xfpt b/doc/doc-docbook/spec.xfpt index 7608dc680..97df293d5 100644 --- a/doc/doc-docbook/spec.xfpt +++ b/doc/doc-docbook/spec.xfpt @@ -5033,6 +5033,27 @@ address lists. In Exim 4 these are handled better by named lists &-- see section &<<SECTnamedlists>>&. +.new +.section "Builtin macros" "SECTbuiltinmacros" +Exim defines some macros depending on facilities available, which may +differ due to build-time definitions and from one release to another. +All of these macros start with an underscore. +They can be used to conditionally include parts of a configuration +(see below). + +The following classes of macros are defined: +.display +&` _HAVE_ `& build-time defines +&` _DRVR_AUTH_ `& authehticator drivers +&` _DRVR_RTR_ `& router drivers +&` _DRVR_TPT_ `& transport drivers +&` _OPT_ `& configuration option support +.endd + +Use an &"exim -bP macros"& command to get the list of macros. +.wen + + .section "Conditional skips in the configuration file" "SECID46" .cindex "configuration file" "conditional skips" .cindex "&`.ifdef`&" |