These are the changes to autoconf files for the stdio_pure patch
Signed-off-by: Keith Packard <kei...@keithp.com>
---
libstdc++-v3/config.h.in | 3 +++
libstdc++-v3/configure | 17 ++++++++++++-----
2 files changed, 15 insertions(+), 5 deletions(-)
diff --git a/libstdc++-v3/config.h.in b/libstdc++-v3/config.h.in
index 72faabfb2c1..c0c166715cb 100644
--- a/libstdc++-v3/config.h.in
+++ b/libstdc++-v3/config.h.in
@@ -1022,6 +1022,9 @@
/* Define if POSIX read/write locks are available in <gthr.h>. */
#undef _GLIBCXX_USE_PTHREAD_RWLOCK_T
+/* Define to restrict std::__basic_file<> to stdio APIs. */
+#undef _GLIBCXX_USE_STDIO_PURE
+
/* Define if /dev/random and /dev/urandom are available for the random_device
of TR1 (Chapter 5.1). */
#undef _GLIBCXX_USE_RANDOM_TR1
diff --git a/libstdc++-v3/configure b/libstdc++-v3/configure
index d128de2f186..36c61a77d07 100755
--- a/libstdc++-v3/configure
+++ b/libstdc++-v3/configure
@@ -16376,7 +16376,7 @@ $as_echo_n "checking for underlying I/O to use... "
>&6; }
if test "${enable_cstdio+set}" = set; then :
enableval=$enable_cstdio;
case "$enableval" in
- stdio) ;;
+ stdio|stdio_posix|stdio_pure) ;;
*) as_fn_error $? "Unknown argument to enable/disable cstdio" "$LINENO"
5 ;;
esac
@@ -16386,16 +16386,23 @@ fi
- # Now that libio has been removed, you can have any color you want as long
- # as it's black. This is one big no-op until other packages are added, but
- # showing the framework never hurts.
+ # The only available I/O model is based on stdio, via basic_file_stdio.
+ # The default "stdio" is actually "stdio + POSIX" because it uses fdopen(3)
+ # to get a file descriptor and then uses read(3) and write(3) with it.
+ # The "stdio_pure" model doesn't use fdopen and only uses FILE* for I/O.
case ${enable_cstdio} in
- stdio)
+ stdio*)
CSTDIO_H=config/io/c_io_stdio.h
BASIC_FILE_H=config/io/basic_file_stdio.h
BASIC_FILE_CC=config/io/basic_file_stdio.cc
{ $as_echo "$as_me:${as_lineno-$LINENO}: result: stdio" >&5
$as_echo "stdio" >&6; }
+
+ if test "x$enable_cstdio" = "xstdio_pure" ; then
+
+$as_echo "#define _GLIBCXX_USE_STDIO_PURE 1" >>confdefs.h
+
+ fi
;;
esac
--
2.29.2
