Commit f5c08e17 authored by Paul Eggert's avatar Paul Eggert

* configure.in: Document --enable-gcc-warnings better.

parent fee5959d
2012-07-06 Paul Eggert <eggert@cs.ucla.edu>
* configure.in: Document --enable-gcc-warnings better.
Use c_strcasecmp for ASCII case-insensitive comparison (Bug#11786).
This is safer than strcasecmp, which has unspecified behavior
outside the POSIX locale and in practice sometimes does not work
in multibyte locales. Similarly for c_strncasecmp and strncasecmp.
* configure.in (strcasecmp, strncasecmp): Remove checks.
* lib/c-ctype.c, lib/c-ctype.h, lib/c-strcase.h, lib/c-strcasecmp.c:
* lib/c-strncasecmp.c: New files, taken from gnulib.
* lib/gnulib.mk, m4/gnulib-comp.m4: Regenerate.
......
......@@ -575,7 +575,9 @@ gl_EARLY
AC_ARG_ENABLE([gcc-warnings],
[AS_HELP_STRING([--enable-gcc-warnings],
[turn on lots of GCC warnings (for developers)])],
[turn on lots of GCC warnings. This is intended for
developers, and may generate false alarms when used
with older or non-GNU development tools.])],
[case $enableval in
yes|no) ;;
*) AC_MSG_ERROR([bad value $enableval for gcc-warnings option]) ;;
......@@ -597,7 +599,7 @@ if test "${enableval}" != "no"; then
LTO="-flto=$CPUS"
else
LTO="-flto"
fi
fi
old_CFLAGS=$CFLAGS
CFLAGS="$CFLAGS $LTO"
AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[]], [[]])],
......
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