Reference: Some Configuration Macros
config.m4
The file config.m4 is processed by buildconf and must contain all the instructions to be executed during configuration. For example, these can include tests for required external files, such as header files, libraries, and so on. PHP defines a set of macros that can be used in this process, the most useful of which are described in Table 9.18.
| Macro | Description |
|---|---|
| AC_MSG_CHECKING(message) | Prints a checking <message> text during configure. |
| AC_MSG_RESULT(value) | Gives the result to AC_MSG_CHECKING; should specify either yes or no as value. |
| AC_MSG_ERROR(message) | Prints message as error message during configure and aborts the script. |
| AC_DEFINE(name, value, description) | Adds |
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