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Minimize printf/scanf size on platforms that don't need C99.

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* acconfig.h (_WANT_IO_C99_FORMATS): New macro.
* newlib.hin (_WANT_IO_C99_FORMATS): Likewise.
* configure.in (newlib-io-c99-formats): New configure option.
(_WANT_IO_C99_FORMATS): Define appropriately.
* configure.host (*-linux*, cygwin): Default c99-formats to yes.
* libc/stdio/vfprintf.c (_VFPRINTF_R) [!_WANT_IO_C99_FORMATS]:
Cripple ' flag; hh, z, j, t sizes; a, A, F, C, S specifiers.
* libc/stdio/vfscanf.c (_VFSCANF_R) [!_WANT_IO_C99_FORMATS]:
Likewise.
* configure: Regenerate.
This commit is contained in:
Eric Blake
2007-05-11 20:09:00 +00:00
parent b8a37af936
commit 0962fe9178
8 changed files with 187 additions and 63 deletions
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29
newlib/configure vendored
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@ -823,6 +823,7 @@ Optional Features:
--disable-FEATURE do not include FEATURE (same as --enable-FEATURE=no)
--enable-FEATURE[=ARG] include FEATURE [ARG=yes]
--enable-newlib-io-pos-args enable printf-family positional arg support
--enable-newlib-io-c99-formats enable C99 support in IO functions like printf/scanf
--enable-newlib-io-long-long enable long long type support in IO functions like printf/scanf
--enable-newlib-io-long-double enable long double type support in IO functions printf/scanf
--enable-newlib-mb enable multibyte support
@ -1357,6 +1358,19 @@ echo "$as_me: error: bad value ${enableval} for newlib-io-pos-args option" >&2;}
else
newlib_io_pos_args=
fi;
# Check whether --enable-newlib-io-c99-formats or --disable-newlib-io-c99-formats was given.
if test "${enable_newlib_io_c99_formats+set}" = set; then
enableval="$enable_newlib_io_c99_formats"
case "${enableval}" in
yes) newlib_io_c99_formats=yes;;
no) newlib_io_c99_formats=no ;;
*) { { echo "$as_me:$LINENO: error: bad value ${enableval} for newlib-io-c99-formats option" >&5
echo "$as_me: error: bad value ${enableval} for newlib-io-c99-formats option" >&2;}
{ (exit 1); exit 1; }; } ;;
esac
else
newlib_io_c99_formats=
fi;
# Check whether --enable-newlib-io-long-long or --disable-newlib-io-long-long was given.
if test "${enable_newlib_io_long_long+set}" = set; then
enableval="$enable_newlib_io_long_long"
@ -4778,7 +4792,7 @@ test x"$pic_mode" = xno && libtool_flags="$libtool_flags --prefer-non-pic"
case $host in
*-*-irix6*)
# Find out which ABI we are using.
echo '#line 4781 "configure"' > conftest.$ac_ext
echo '#line 4795 "configure"' > conftest.$ac_ext
if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
(eval $ac_compile) 2>&5
ac_status=$?
@ -5197,6 +5211,13 @@ _ACEOF
fi
if test "${newlib_io_c99_formats}" = "yes"; then
cat >>confdefs.h <<_ACEOF
#define _WANT_IO_C99_FORMATS 1
_ACEOF
fi
if test "${newlib_io_long_long}" = "yes"; then
cat >>confdefs.h <<_ACEOF
#define _WANT_IO_LONG_LONG 1
@ -5307,7 +5328,7 @@ echo "$as_me: error: --enable-newlib-iconv-encodings, --enable-newlib-iconv-from
for encoding in ${iconv_encodings1}; do
result=`echo "${available_encodings}" | grep -e "\(^\| \)${encoding}\( \|\$\)"`
if test $? != "0"; then
{ { echo "$as_me:$LINENO: error: ${encoding} is not supported - see ${srcdir}/libc/iconv/encoding.aliases file for the list of available encodings" >&5
{ { echo "$as_me:$LINENO: error: ${encoding} is not supported - see ${srcdir}/libc/iconv/encoding.aliases file for the list of available encodings" >&5
echo "$as_me: error: ${encoding} is not supported - see ${srcdir}/libc/iconv/encoding.aliases file for the list of available encodings" >&2;}
{ (exit 1); exit 1; }; }
fi
@ -5332,7 +5353,7 @@ _ACEOF
for encoding in ${iconv_encodings1}; do
result=`echo "${available_encodings}" | grep -e "\(^\| \)${encoding}\( \|\$\)"`
if test $? != "0"; then
{ { echo "$as_me:$LINENO: error: ${encoding} is not supported - see ${srcdir}/libc/iconv/encoding.aliases file for the list of available encodings" >&5
{ { echo "$as_me:$LINENO: error: ${encoding} is not supported - see ${srcdir}/libc/iconv/encoding.aliases file for the list of available encodings" >&5
echo "$as_me: error: ${encoding} is not supported - see ${srcdir}/libc/iconv/encoding.aliases file for the list of available encodings" >&2;}
{ (exit 1); exit 1; }; }
fi
@ -5352,7 +5373,7 @@ _ACEOF
for encoding in ${iconv_encodings1}; do
result=`echo "${available_encodings}" | grep -e "\(^\| \)${encoding}\( \|\$\)"`
if test $? != "0"; then
{ { echo "$as_me:$LINENO: error: ${encoding} is not supported - see ${srcdir}/libc/iconv/encoding.aliases file for the list of available encodings" >&5
{ { echo "$as_me:$LINENO: error: ${encoding} is not supported - see ${srcdir}/libc/iconv/encoding.aliases file for the list of available encodings" >&5
echo "$as_me: error: ${encoding} is not supported - see ${srcdir}/libc/iconv/encoding.aliases file for the list of available encodings" >&2;}
{ (exit 1); exit 1; }; }
fi