* configure.host: Add check for --enable-newlib-io-pos-args
and define WANT_IO_POS_ARGS flag if enabled. Define
the flag by default for x86-linux configurations.
* configure.in: Add support for --enable-newlib-io-pos-args.
* libc/configure.in: Ditto.
* configure: Regenerated.
* libc/configure: Ditto.
* libc/stdio/Makefile.am: Specify -fshort-enums for compiling
vfprintf.c and vfiprintf.c.
* libc/stdio/Makefile.in: Regenerated.
* libc/stdio/vfprintf.c: Add positional argument support that
is enabled by compiling with -DWANT_IO_POS_ARGS.
* configure.in (CC_FOR_NEWLIB): New variable that
bases on $(CC) and adds targ-include and libc/include as
-isystem directives if they are not already part of $(CC).
* Makefile.am (AM_MAKEFLAGS): Change setting of CC to equal
$(CC_FOR_NEWLIB).
* configure: Regenerated.
* Makefile.in: Ditto.
(CRT1_DIR): Set to ${crt1_dir}/ if crt1_dir is non-empty.
* Makefile.am: Change all occurrences of $(CRT0_DIR)/$(CRT0) to
$(CRT0_DIR)$(CRT0) to prevent make warnings. Likewise for
$(CRT1_DIR)/$(CRT1).
* libc/machine/xstormy16/Makefile.in: Regenerated.
* libc/machine/xstormy16/aclocal.m4: Regenerated.
* libc/machine/xstormy16/configure: Regenerated.
* Makefile.am: Add support for installing crt1.o if one exists.
* configure.host: Specify crt1.o for linux.
* configure.in: Expose CRT1 and CRT1_DIR for Makefile.am to use.
* Makefile.in: Regenerated.
* configure: Ditto.
* libc/include/sys/unistd.h (_SC_STREAM_MAX, _SC_PRIORITY_SCHEDULING):
Added for non-Cygwin, non-RTEMS configurations.
* libc/sys/linux/Makefile.am: Add support for crt1 and sysconf.
* libc/sys/linux/Makefile.in: Regenerated.
* libc/sys/linux/crt1.c: New empty file to override one defaulted
by gcc. This fixes problem with reconfiguring linux newlib build.
* libc/sys/linux/sysconf.c: New file.