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AX_CFLAGS_NO_WRITABLE_STRINGS [(shellvar [,default, [A/NA]])]
Try to find a compiler option that makes all string literals readonly.
The sanity check is done by looking at string.h which has a set of strcpy definitions that should be defined with const-modifiers to not emit a warning in all so many places.
For the GNU CC compiler it will be -fno-writable-strings -Wwrite-strings 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.
Download the latest version of ax_cflags_no_writable_strings.m4 or browse the macro’s revision history.
Copyright © 2008 Guido U. Draheim guidod@gmx.de
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