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> 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). Use c_strcasecmp for ASCII case-insensitive comparison (Bug#11786).
This is safer than strcasecmp, which has unspecified behavior This is safer than strcasecmp, which has unspecified behavior
outside the POSIX locale and in practice sometimes does not work outside the POSIX locale and in practice sometimes does not work
in multibyte locales. Similarly for c_strncasecmp and strncasecmp. in multibyte locales. Similarly for c_strncasecmp and strncasecmp.
* configure.in (strcasecmp, strncasecmp): Remove checks. * configure.in (strcasecmp, strncasecmp): Remove checks.
* lib/c-ctype.c, lib/c-ctype.h, lib/c-strcase.h, lib/c-strcasecmp.c: * 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/c-strncasecmp.c: New files, taken from gnulib.
* lib/gnulib.mk, m4/gnulib-comp.m4: Regenerate. * lib/gnulib.mk, m4/gnulib-comp.m4: Regenerate.
......
...@@ -575,7 +575,9 @@ gl_EARLY ...@@ -575,7 +575,9 @@ gl_EARLY
AC_ARG_ENABLE([gcc-warnings], AC_ARG_ENABLE([gcc-warnings],
[AS_HELP_STRING([--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 [case $enableval in
yes|no) ;; yes|no) ;;
*) AC_MSG_ERROR([bad value $enableval for gcc-warnings option]) ;; *) AC_MSG_ERROR([bad value $enableval for gcc-warnings option]) ;;
...@@ -597,7 +599,7 @@ if test "${enableval}" != "no"; then ...@@ -597,7 +599,7 @@ if test "${enableval}" != "no"; then
LTO="-flto=$CPUS" LTO="-flto=$CPUS"
else else
LTO="-flto" LTO="-flto"
fi fi
old_CFLAGS=$CFLAGS old_CFLAGS=$CFLAGS
CFLAGS="$CFLAGS $LTO" CFLAGS="$CFLAGS $LTO"
AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[]], [[]])], AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[]], [[]])],
......
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