sinclude(./aclocal.m4)dnl Autoconf lossage GLIBC_PROVIDES dnl See aclocal.m4 in the top level source directory. # Local configure fragment for sysdeps/unix/sysv/linux. # On Linux, the default is to use libio instead of stdio. test $stdio = default && stdio=libio # Don't bother trying to generate any glue code to be compatible with the # existing system library, because we are the only system library. inhibit_glue=yes define([LIBC_LINUX_VERSION],[2.0.10])dnl define([libc_cv_linuxVER], [libc_cv_linux]patsubst(LIBC_LINUX_VERSION,[\.]))dnl AC_CACHE_CHECK(installed Linux kernel header files, libc_cv_linuxVER, [dnl AC_TRY_COMPILE([#include ], [#if LINUX_VERSION_CODE < ]dnl patsubst(LIBC_LINUX_VERSION,[^\([^.]*\)\.\([^.]*\)\.\([^.]*\)$],dnl [ (\1 *65536+ \2 *256+ \3) /* \1.\2.\3 */])[ eat flaming death #endif], libc_cv_linuxVER='LIBC_LINUX_VERSION or later', libc_cv_linuxVER='TOO OLD!')]) if test "$libc_cv_linuxVER" != 'LIBC_LINUX_VERSION or later'; then AC_MSG_ERROR([GNU libc requires kernel header files from Linux LIBC_LINUX_VERSION or later to be installed before configuring. The kernel header files are found usually in /usr/include/asm and /usr/include/linux; make sure these directories use files from Linux LIBC_LINUX_VERSION or later. This check uses , so make sure that file was built correctly when installing the kernel header files.]) fi # The Linux filesystem standard prescribes where to place "essential" # files. I.e., when the installation prefix is "/usr" we have to place # shared library objects and the configuration files on the root partition # in /lib and /etc. if test "$prefix" = "/usr"; then libc_cv_slibdir="/lib" libc_cv_sysconfdir="/etc" libc_cv_rootsbindir="/sbin" fi # Under Linux the LinuxThreads and crypt add-on should be available. case $add_ons in # Both are available. Good. *linuxthreads*crypt* | *crypt*linuxthreads*) message= ;; *linuxthreads*) message="\ *** WARNING: *** Are you sure you do not want to use the \`crypt' add-on?" ;; *crypt*) message="\ *** WARNING: *** Are you sure you do not want to use the \`linuxthread' add-on?" ;; *) message="\ *** WARNING: Are you sure you do not want to use the \`linuxthreads' *** and \`crypt' add-ons?" ;; esac if test "$message"; then if test $enable_sanity = yes; then echo "\ *** You should not compile the GNU libc without the \`linuxthreads' and *** \`crypt' add-on. Not using them risks to be incompatible with the *** libraries of other systems. Consider getting the add-ons and restart *** the configuration. *** If you really mean to avoid those add-ons run configure again, now *** using the extra parameter \`--disable-sanity-checks'." exit 1 else echo "$message" fi fi # Check whether `ldconfig' sources are available. This will go away as soon # as ldconfig is available in GNU libc. if test -f $srcdir/elf/ldconfig.c; then has_ldconfig=yes fi # Generate stdio_lim.h default_fopen_max="`${CC-gcc} -E $srcdir/sysdeps/unix/sysv/linux/mk-stdiolim.c | grep DEFAULT_FOPEN_MAX | cut -f2 -d':'`" default_filename_max="`${CC-gcc} -E $srcdir/sysdeps/unix/sysv/linux/mk-stdiolim.c | grep DEFAULT_FILENAME_MAX | cut -f2 -d':'`" # We double check if "default_fopen_max" and "default_filename_max" are # ok or not. if test "x$default_fopen_max" != "xOPEN_MAX" \ -a "x$default_filename_max" != "xPATH_MAX" then sed -e "s/DEFAULT_FOPEN_MAX/$default_fopen_max/" \ -e "s/DEFAULT_FILENAME_MAX/$default_filename_max/" \ $srcdir/sysdeps/unix/sysv/linux/stdio_lim.h.in > stdio_lim.h.new if test -r stdio_lim.h.new && cmp -s stdio_lim.h.new stdio_lim.h then echo stdio_lim.h unchanged rm -f stdio_lim.h.new else mv -f stdio_lim.h.new stdio_lim.h fi else # We remove the old one if we cannot generate the new one during # configure. rm -f stdio_lim.h fi