ax_cflags_strict_prototypes (Autoconf Archive)

ax_cflags_strict_prototypes

Synopsis

AX_CFLAGS_STRICT_PROTOTYPES [(shellvar [,default, [A/NA]]

Description

Try to find a compiler option that requires strict prototypes.

The sanity check is done by looking at sys/signal.h which has a set of macro-definitions SIG_DFL and SIG_IGN that are cast to the local signal-handler type. If that signal-handler type is not fully qualified then the system headers are not seen as strictly prototype clean.

For the GNU CC compiler it will be -fstrict-prototypes -Wstrict-prototypes The result is added to the shellvar being CFLAGS by default.

DEFAULTS:

 - $1 shell-variable-to-add-to : CFLAGS
 - $2 add-value-if-not-found : nothing
 - $3 action-if-found : add value to shellvariable
 - $4 action-if-not-found : nothing

NOTE: These macros depend on AX_APPEND_FLAG.

Source Code

Download the latest version of ax_cflags_strict_prototypes.m4 or browse the macro’s revision history.

License

Copying and distribution of this file, with or without modification, are permitted in any medium without royalty provided the copyright notice and this notice are preserved. This file is offered as-is, without any warranty.