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@ -3619,12 +3619,19 @@ For this of course you need the m4 file: |
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=head2 PREPROCESSOR SYMBOLS/MACROS |
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Libev can be configured via a variety of preprocessor symbols you have to |
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define before including any of its files. The default in the absence of |
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autoconf is documented for every option. |
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define before including (or compiling) any of its files. The default in |
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the absence of autoconf is documented for every option. |
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Symbols marked with "(h)" do not change the ABI, and can have different |
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values when compiling libev vs. including F<ev.h>, so it is permissible |
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to redefine them before including F<ev.h> without breakign compatibility |
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to a compiled library. All other symbols change the ABI, which means all |
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users of libev and the libev code itself must be compiled with compatible |
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settings. |
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=over 4 |
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=item EV_STANDALONE |
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=item EV_STANDALONE (h) |
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Must always be C<1> if you do not use autoconf configuration, which |
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keeps libev from including F<config.h>, and it also defines dummy |
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@ -3784,24 +3791,24 @@ as well as for signal and thread safety in C<ev_async> watchers. |
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In the absence of this define, libev will use C<sig_atomic_t volatile> |
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(from F<signal.h>), which is usually good enough on most platforms. |
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=item EV_H |
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=item EV_H (h) |
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The name of the F<ev.h> header file used to include it. The default if |
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undefined is C<"ev.h"> in F<event.h>, F<ev.c> and F<ev++.h>. This can be |
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used to virtually rename the F<ev.h> header file in case of conflicts. |
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=item EV_CONFIG_H |
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=item EV_CONFIG_H (h) |
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If C<EV_STANDALONE> isn't C<1>, this variable can be used to override |
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F<ev.c>'s idea of where to find the F<config.h> file, similarly to |
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C<EV_H>, above. |
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=item EV_EVENT_H |
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=item EV_EVENT_H (h) |
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Similarly to C<EV_H>, this macro can be used to override F<event.c>'s idea |
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of how the F<event.h> header can be found, the default is C<"event.h">. |
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=item EV_PROTOTYPES |
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=item EV_PROTOTYPES (h) |
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If defined to be C<0>, then F<ev.h> will not define any function |
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prototypes, but still define all the structs and other symbols. This is |
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@ -3883,6 +3890,17 @@ provide a bare-bones event library. See C<ev.h> for details on what parts |
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of the API are still available, and do not complain if this subset changes |
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over time. |
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=item EV_AVOID_STDIO |
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If this is set to C<1> at compiletime, then libev will avoid using stdio |
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functions (printf, scanf, perror etc.). This will increase the codesize |
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somewhat, but if your program doesn't otherwise depend on stdio and your |
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libc allows it, this avoids linking in the stdio library which is quite |
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big. |
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Note that error messages might become less precise when this option is |
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enabled. |
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=item EV_NSIG |
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The highest supported signal number, +1 (or, the number of |
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