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libstdc++: Improve config output for --enable-cstdio [PR104301] 

Currently we just print "checking for underlying I/O to use... stdio"
unconditionally, whether configured to use stdio_pure or stdio_posix. We
should make it clear that the user's configure option chose the right
thing.

libstdc++-v3/ChangeLog:

	PR libstdc++/104301
	* acinclude.m4 (GLIBCXX_ENABLE_CSTDIO): Print different messages
	for stdio_pure and stdio_posix options.
	* configure: Regenerate.
This commit is contained in:
Jonathan Wakely 2022-01-31 11:00:18 +00:00
parent 8753b13a31
commit 19b8946dbd
2 changed files with 8 additions and 3 deletions
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4
libstdc++-v3/acinclude.m4
View File

@ -2830,11 +2830,13 @@ AC_DEFUN([GLIBCXX_ENABLE_CSTDIO], [
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
AC_MSG_RESULT(stdio)
if test "x$enable_cstdio" = "xstdio_pure" ; then
AC_MSG_RESULT([stdio (without POSIX read/write)])
AC_DEFINE(_GLIBCXX_USE_STDIO_PURE, 1,
[Define to restrict std::__basic_file<> to stdio APIs.])
else
AC_MSG_RESULT([stdio (with POSIX read/write)])
fi
;;
esac

7
libstdc++-v3/configure vendored
View File

@ -16408,13 +16408,16 @@ fi
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
{ $as_echo "$as_me:${as_lineno-$LINENO}: result: stdio (without POSIX read/write)" >&5
$as_echo "stdio (without POSIX read/write)" >&6; }
$as_echo "#define _GLIBCXX_USE_STDIO_PURE 1" >>confdefs.h
else
{ $as_echo "$as_me:${as_lineno-$LINENO}: result: stdio (with POSIX read/write)" >&5
$as_echo "stdio (with POSIX read/write)" >&6; }
fi
;;
esac