# Guess values for system-dependent variables and create Makefiles.
# Generated by GNU Autoconf 2.69 for GNU C Library (see version.h).
#
-# Report bugs to <http://sourceware.org/bugzilla/>.
+# Report bugs to <https://sourceware.org/bugzilla/>.
#
#
# Copyright (C) 1992-1996, 1998-2012 Free Software Foundation, Inc.
$as_echo "$0: be upgraded to zsh 4.3.4 or later."
else
$as_echo "$0: Please tell bug-autoconf@gnu.org and
-$0: http://sourceware.org/bugzilla/ about your system,
+$0: https://sourceware.org/bugzilla/ about your system,
$0: including any error possibly output before this
$0: message. Then install a modern shell, or manually run
$0: the script under such a shell if you do have one."
PACKAGE_TARNAME='glibc'
PACKAGE_VERSION='(see version.h)'
PACKAGE_STRING='GNU C Library (see version.h)'
-PACKAGE_BUGREPORT='http://sourceware.org/bugzilla/'
-PACKAGE_URL='http://www.gnu.org/software/glibc/'
+PACKAGE_BUGREPORT='https://sourceware.org/bugzilla/'
+PACKAGE_URL='https://www.gnu.org/software/glibc/'
ac_unique_file="include/features.h"
enable_option_checking=no
ac_subst_vars='LTLIBOBJS
LIBOBJS
+pthread_in_libc
RELEASE
VERSION
mach_interface_list
DEFINES
static_nss
profile
+libc_cv_multidir
libc_cv_pie_default
+libc_cv_cc_pie_default
libc_cv_pic_default
shared
static
libc_cv_cc_nofma
libc_cv_mtls_dialect_gnu2
fno_unit_at_a_time
-libc_cv_output_format
libc_cv_has_glob_dat
libc_cv_hashstyle
libc_cv_fpie
libc_cv_z_combreloc
ASFLAGS_config
libc_cv_cc_with_libunwind
+libc_cv_insert
libc_cv_protected_data
-BISON
INSTALL_INFO
PERL
BASH_SHELL
PYTHON_PROG
AUTOCONF
NM
+BISON
AWK
SED
MAKEINFO
MAKE
LD
AS
+GPROF
OBJCOPY
OBJDUMP
AR
INSTALL_DATA
INSTALL_SCRIPT
INSTALL_PROGRAM
-sysdeps_add_ons
sysnames
submachine
multi_arch
+libc_cv_textrel_ifunc
no_stack_protector
stack_protector
libc_cv_ssp
+libc_cv_with_fp
base_machine
-add_on_subdirs
-add_ons
have_tunables
build_pt_chown
build_nscd
-build_obsolete_nsl
-link_obsolete_rpc
libc_cv_static_nss_crypt
libc_cv_nss_crypt
+build_crypt
+memory_tagging
+experimental_malloc
enable_werror
all_warnings
force_install
bindnow
-enable_lock_elision
hardcoded_path_in_tests
enable_timezone_tools
+extra_nonshared_cflags
use_default_link
sysheaders
-with_fp
ac_ct_CXX
CXXFLAGS
CXX
with_gd
with_gd_include
with_gd_lib
-with_fp
with_binutils
with_selinux
with_headers
with_default_link
+with_nonshared_cflags
enable_sanity_checks
enable_shared
enable_profile
+enable_static_pie
enable_timezone_tools
enable_hardcoded_path_in_tests
-enable_stackguard_randomization
-enable_lock_elision
-enable_add_ons
enable_hidden_plt
enable_bind_now
enable_stack_protector
enable_all_warnings
enable_werror
enable_multi_arch
+enable_experimental_malloc
+enable_memory_tagging
+enable_crypt
enable_nss_crypt
-enable_obsolete_rpc
-enable_obsolete_nsl
enable_systemtap
enable_build_nscd
enable_nscd
enable_pt_chown
enable_tunables
enable_mathvec
+enable_cet
+enable_scv
with_cpu
'
ac_precious_vars='build_alias
CXX
CXXFLAGS
CCC'
-ac_subdirs_all='
-'
+ac_subdirs_all=''
# Initialize some variables set by options.
ac_init_help=
in special situations) [default=yes]
--enable-shared build shared library [default=yes if GNU ld]
--enable-profile build profiled library [default=no]
+ --enable-static-pie enable static PIE support and use it in the
+ testsuite [default=no]
--disable-timezone-tools
do not install timezone tools [default=install]
--enable-hardcoded-path-in-tests
hardcode newly built glibc path in tests
[default=no]
- --enable-stackguard-randomization
- initialize __stack_chk_guard canary with a random
- number at program start
- --enable-lock-elision=yes/no
- Enable lock elision for pthread mutexes by default
- --enable-add-ons[=DIRS...]
- configure and build add-ons in DIR1,DIR2,... search
- for add-ons if no parameter given
--disable-hidden-plt do not hide internal function calls to avoid PLT
--enable-bind-now disable lazy relocations in DSOs
--enable-stack-protector=[yes|no|all|strong]
--disable-werror do not build with -Werror
--enable-multi-arch enable single DSO with optimizations for multiple
architectures
+ --disable-experimental-malloc
+ disable experimental malloc features
+ --enable-memory-tagging enable memory tagging if supported by the
+ architecture [default=no]
+ --disable-crypt do not build nor install the passphrase hashing
+ library, libcrypt
--enable-nss-crypt enable libcrypt to use nss
- --enable-obsolete-rpc build and install the obsolete RPC code for
- link-time usage
- --enable-obsolete-nsl build and install the obsolete libnsl library and
- depending NSS modules
--enable-systemtap enable systemtap static probe points [default=no]
--disable-build-nscd disable building and installing the nscd daemon
--disable-nscd library functions will not contact the nscd daemon
'no' and 'valstring'
--enable-mathvec Enable building and installing mathvec [default
depends on architecture]
+ --enable-cet enable Intel Control-flow Enforcement Technology
+ (CET), x86 only
+ --disable-scv syscalls will not use scv instruction, even if the
+ kernel supports it, powerpc only
Optional Packages:
--with-PACKAGE[=ARG] use PACKAGE [ARG=yes]
--with-gd=DIR find libgd include dir and library with prefix DIR
--with-gd-include=DIR find libgd include files in DIR
--with-gd-lib=DIR find libgd library files in DIR
- --with-fp if using floating-point hardware [default=yes]
--with-binutils=PATH specify location of binutils (as and ld)
--with-selinux if building with SELinux support
--with-headers=PATH location of system headers to use (for example
/usr/src/linux/include) [default=compiler default]
--with-default-link do not use explicit linker scripts
+ --with-nonshared-cflags=CFLAGS
+ build nonshared libraries with additional CFLAGS
--with-cpu=CPU select code for CPU variant
Some influential environment variables:
Use these variables to override the choices made by `configure' or to help
it to find libraries and programs with nonstandard names/locations.
-Report bugs to <http://sourceware.org/bugzilla/>.
-GNU C Library home page: <http://www.gnu.org/software/glibc/>.
+Report bugs to <https://sourceware.org/bugzilla/>.
+GNU C Library home page: <https://www.gnu.org/software/glibc/>.
General help using GNU software: <http://www.gnu.org/gethelp/>.
_ACEOF
ac_status=$?
as_fn_set_status $ac_retval
} # ac_fn_c_try_link
+
+# ac_fn_c_try_cpp LINENO
+# ----------------------
+# Try to preprocess conftest.$ac_ext, and return whether this succeeded.
+ac_fn_c_try_cpp ()
+{
+ as_lineno=${as_lineno-"$1"} as_lineno_stack=as_lineno_stack=$as_lineno_stack
+ if { { ac_try="$ac_cpp conftest.$ac_ext"
+case "(($ac_try" in
+ *\"* | *\`* | *\\*) ac_try_echo=\$ac_try;;
+ *) ac_try_echo=$ac_try;;
+esac
+eval ac_try_echo="\"\$as_me:${as_lineno-$LINENO}: $ac_try_echo\""
+$as_echo "$ac_try_echo"; } >&5
+ (eval "$ac_cpp conftest.$ac_ext") 2>conftest.err
+ ac_status=$?
+ if test -s conftest.err; then
+ grep -v '^ *+' conftest.err >conftest.er1
+ cat conftest.er1 >&5
+ mv -f conftest.er1 conftest.err
+ fi
+ $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
+ test $ac_status = 0; } > conftest.i && {
+ test -z "$ac_c_preproc_warn_flag$ac_c_werror_flag" ||
+ test ! -s conftest.err
+ }; then :
+ ac_retval=0
+else
+ $as_echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+ ac_retval=1
+fi
+ eval $as_lineno_stack; ${as_lineno_stack:+:} unset as_lineno
+ as_fn_set_status $ac_retval
+
+} # ac_fn_c_try_cpp
cat >config.log <<_ACEOF
This file contains any messages produced by compilers while
running configure, to aid debugging if configure makes a mistake.
;;
esac
else
- BUGURL="http://www.gnu.org/software/libc/bugs.html"
+ BUGURL="https://www.gnu.org/software/libc/bugs.html"
fi
# We require GCC, and by default use its preprocessor. Override AC_PROG_CPP
# here to work around the Autoconf issue discussed in
-# <http://sourceware.org/ml/libc-alpha/2013-01/msg00721.html>.
+# <https://sourceware.org/ml/libc-alpha/2013-01/msg00721.html>.
# AC_PROG_CPP
# We require GCC. Override _AC_PROG_CC_C89 here to work around the Autoconf
# issue discussed in
-# <http://sourceware.org/ml/libc-alpha/2013-01/msg00757.html>.
+# <https://sourceware.org/ml/libc-alpha/2013-01/msg00757.html>.
fi
-# Check whether --with-fp was given.
-if test "${with_fp+set}" = set; then :
- withval=$with_fp; with_fp=$withval
-else
- with_fp=yes
-fi
-
-
-
# Check whether --with-binutils was given.
if test "${with_binutils+set}" = set; then :
withval=$with_binutils; path_binutils=$withval
fi
+
+# Check whether --with-nonshared-cflags was given.
+if test "${with_nonshared_cflags+set}" = set; then :
+ withval=$with_nonshared_cflags; extra_nonshared_cflags=$withval
+else
+ extra_nonshared_cflags=
+fi
+
+
+
# Check whether --enable-sanity-checks was given.
if test "${enable_sanity_checks+set}" = set; then :
enableval=$enable_sanity_checks; enable_sanity=$enableval
profile=no
fi
+# Check whether --enable-static-pie was given.
+if test "${enable_static_pie+set}" = set; then :
+ enableval=$enable_static_pie; static_pie=$enableval
+else
+ static_pie=no
+fi
+
# Check whether --enable-timezone-tools was given.
if test "${enable_timezone_tools+set}" = set; then :
enableval=$enable_timezone_tools; enable_timezone_tools=$enableval
-# Check whether --enable-stackguard-randomization was given.
-if test "${enable_stackguard_randomization+set}" = set; then :
- enableval=$enable_stackguard_randomization; enable_stackguard_randomize=$enableval
-else
- enable_stackguard_randomize=no
-fi
-
-if test "$enable_stackguard_randomize" = yes; then
- $as_echo "#define ENABLE_STACKGUARD_RANDOMIZE 1" >>confdefs.h
-
-fi
-
-# Check whether --enable-lock-elision was given.
-if test "${enable_lock_elision+set}" = set; then :
- enableval=$enable_lock_elision; enable_lock_elision=$enableval
-else
- enable_lock_elision=no
-fi
-
-
-if test "$enable_lock_elision" = yes ; then
- $as_echo "#define ENABLE_LOCK_ELISION 1" >>confdefs.h
-
-fi
-
-# Check whether --enable-add-ons was given.
-if test "${enable_add_ons+set}" = set; then :
- enableval=$enable_add_ons;
-else
- enable_add_ons=yes
-fi
-
-
# Check whether --enable-hidden-plt was given.
if test "${enable_hidden_plt+set}" = set; then :
enableval=$enable_hidden_plt; hidden=$enableval
fi
+# Check whether --enable-experimental-malloc was given.
+if test "${enable_experimental_malloc+set}" = set; then :
+ enableval=$enable_experimental_malloc; experimental_malloc=$enableval
+else
+ experimental_malloc=yes
+fi
+
+
+
+# Check whether --enable-memory-tagging was given.
+if test "${enable_memory_tagging+set}" = set; then :
+ enableval=$enable_memory_tagging; memory_tagging=$enableval
+else
+ memory_tagging=no
+fi
+
+if test "$memory_tagging" = yes; then
+ # Only enable this on architectures that support it.
+ case $host_cpu in
+ aarch64)
+ $as_echo "#define USE_MTAG 1" >>confdefs.h
+
+ ;;
+ esac
+fi
+
+
+# Check whether --enable-crypt was given.
+if test "${enable_crypt+set}" = set; then :
+ enableval=$enable_crypt; build_crypt=$enableval
+else
+ build_crypt=yes
+fi
+
+
+
# Check whether --enable-nss-crypt was given.
if test "${enable_nss_crypt+set}" = set; then :
enableval=$enable_nss_crypt; nss_crypt=$enableval
nss_crypt=no
fi
+if test x$build_libcrypt = xno && test x$nss_crypt = xyes; then
+ { $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: --enable-nss-crypt has no effect when libcrypt is disabled" >&5
+$as_echo "$as_me: WARNING: --enable-nss-crypt has no effect when libcrypt is disabled" >&2;}
+ nss_crypt=no
+fi
if test x$nss_crypt = xyes; then
nss_includes=-I$(nss-config --includedir 2>/dev/null)
if test $? -ne 0; then
as_fn_error $? "cannot find include directory with nss-config" "$LINENO" 5
fi
+ nspr_includes=-I$(nspr-config --includedir 2>/dev/null)
+ if test $? -ne 0; then
+ as_fn_error $? "cannot find include directory with nspr-config" "$LINENO" 5
+ fi
old_CFLAGS="$CFLAGS"
- CFLAGS="$CFLAGS $nss_includes"
+ CFLAGS="$CFLAGS $nss_includes $nspr_includes"
cat confdefs.h - <<_ACEOF >conftest.$ac_ext
/* end confdefs.h. */
-# Check whether --enable-obsolete-rpc was given.
-if test "${enable_obsolete_rpc+set}" = set; then :
- enableval=$enable_obsolete_rpc; link_obsolete_rpc=$enableval
-else
- link_obsolete_rpc=no
-fi
-
-
-
-if test "$link_obsolete_rpc" = yes; then
- $as_echo "#define LINK_OBSOLETE_RPC 1" >>confdefs.h
-
-fi
-
-# Check whether --enable-obsolete-nsl was given.
-if test "${enable_obsolete_nsl+set}" = set; then :
- enableval=$enable_obsolete_nsl; build_obsolete_nsl=$enableval
-else
- build_obsolete_nsl=no
-fi
-
-
-
-if test "$build_obsolete_nsl" = yes; then
- $as_echo "#define LINK_OBSOLETE_NSL 1" >>confdefs.h
-
-fi
-
# Check whether --enable-systemtap was given.
if test "${enable_systemtap+set}" = set; then :
enableval=$enable_systemtap; systemtap=$enableval
if test "${enable_tunables+set}" = set; then :
enableval=$enable_tunables; have_tunables=$enableval
else
- have_tunables=no
+ have_tunables=yes
fi
fi
+
+cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h. */
+
+int
+main ()
+{
+
+#ifndef __CET__
+# error no CET compiler support
+#endif
+ ;
+ return 0;
+}
+_ACEOF
+if ac_fn_c_try_cpp "$LINENO"; then :
+ libc_cv_compiler_default_cet=yes
+else
+ libc_cv_compiler_default_cet=no
+fi
+rm -f conftest.err conftest.i conftest.$ac_ext
+
+# Check whether --enable-cet was given.
+if test "${enable_cet+set}" = set; then :
+ enableval=$enable_cet; enable_cet=$enableval
+else
+ enable_cet=$libc_cv_compiler_default_cet
+fi
+
+
+# Check whether --enable-scv was given.
+if test "${enable_scv+set}" = set; then :
+ enableval=$enable_scv; use_scv=$enableval
+else
+ use_scv=yes
+fi
+
+
+if test "$use_scv" != "no"; then :
+ $as_echo "#define USE_PPC_SCV 1" >>confdefs.h
+
+fi
+
# We keep the original values in `$config_*' and never modify them, so we
# can write them unchanged into config.make. Everything else uses
# $machine, $vendor, and $os, and changes them whenever convenient.
# Some configurations imply other options.
elf=yes
-# The configure fragment of an add-on port can modify these to supplement
+# The configure fragment of a port can modify these to supplement
# or override the table in the case statement below. No fragment should
# ever change the config_* variables, however.
machine=$config_machine
# check below.
libc_config_ok=no
+# A preconfigure script for a system that may or may not use fpu
+# sysdeps directories sets this to a preprocessor conditional for
+# whether to use such directories.
+with_fp_cond=1
+
if frags=`ls -d $srcdir/sysdeps/*/preconfigure 2> /dev/null`
then
{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for sysdeps preconfigure fragments" >&5
$as_echo "" >&6; }
fi
-subdirs="$subdirs "
-
-
-case "$enable_add_ons" in
-''|no) add_ons= ;;
-yes|'*')
- add_ons=`cd $srcdir && ls -d 2> /dev/null */configure */sysdeps |
- sed 's@/[^/]*$@@' | sort | uniq`
- add_ons_automatic=yes
- ;;
-*) add_ons=`echo "$enable_add_ons" | sed 's/,/ /g'`
- add_ons_automatic=no ;;
-esac
-
-configured_add_ons=
-add_ons_sfx=
-add_ons_pfx=
-if test x"$add_ons" != x; then
- for f in $add_ons; do
- # Some sanity checks
- case "$f" in
- crypt)
- as_fn_error $? "
-*** It seems that you're using an old \`crypt' add-on. crypt is now
-*** part of glibc and using the old add-on will not work with this
-*** release. Start again with fresh sources and without the old
-*** \`crypt' add-on." "$LINENO" 5
- ;;
- localedata)
- as_fn_error $? "
-*** It seems that you're using an old \`localedata' add-on. localedata
-*** is now part of glibc and using the old add-on will not work with
-*** this release. Start again with fresh sources and without the old
-*** \`localedata' add-on." "$LINENO" 5
- ;;
- esac
- done
-
- # Now source each add-on's configure fragment.
- # The fragments can use $srcdir/$libc_add_on to find themselves,
- # and test $add_ons_automatic to see if they were explicitly requested.
- # A fragment can clear (or even change) $libc_add_on to affect
- # whether it goes into the list to be actually used in the build.
- use_add_ons=
- for libc_add_on in $add_ons; do
- # Test whether such a directory really exists.
- # It can be absolute, or relative to $srcdir, or relative to the build dir.
- case "$libc_add_on" in
- /*)
- libc_add_on_srcdir=$libc_add_on
- ;;
- *)
- test -d "$srcdir/$libc_add_on" || {
- if test -d "$libc_add_on"; then
- libc_add_on="`pwd`/$libc_add_on"
- else
- as_fn_error $? "add-on directory \"$libc_add_on\" does not exist" "$LINENO" 5
- fi
- }
- libc_add_on_srcdir=$srcdir/$libc_add_on
- ;;
- esac
-
- libc_add_on_frag=$libc_add_on_srcdir/configure
- libc_add_on_canonical=
- libc_add_on_config_subdirs=
- if test -r "$libc_add_on_frag"; then
- { $as_echo "$as_me:${as_lineno-$LINENO}: running configure fragment for add-on $libc_add_on" >&5
-$as_echo "$as_me: running configure fragment for add-on $libc_add_on" >&6;}
- libc_add_on_canonical=unknown
- libc_add_on_subdirs=
- . "$libc_add_on_frag"
- test -z "$libc_add_on" || {
- configured_add_ons="$configured_add_ons $libc_add_on"
- if test "x$libc_add_on_canonical" = xunknown; then
- as_fn_error $? "fragment must set \$libc_add_on_canonical" "$LINENO" 5
- fi
- for d in $libc_add_on_subdirs; do
- case "$libc_add_on" in
- /*) subdir_srcdir="$libc_add_on" ;;
- *) subdir_srcdir="\$(..)$libc_add_on" ;;
- esac
- case "$d" in
- .)
- d="${libc_add_on_canonical:-$libc_add_on}"
- ;;
- /*)
- subdir_srcdir="$d"
- ;;
- *)
- subdir_srcdir="$subdir_srcdir/$d"
- ;;
- esac
- d=`echo "$d" | sed 's@/*$@@;s@^.*/@@'`
- add_on_subdirs="$add_on_subdirs $d"
- test "$subdir_srcdir" = "\$(..)$d" || config_vars="$config_vars
-$d-srcdir = $subdir_srcdir"
- done
- for d in $libc_add_on_config_subdirs; do
- case "$d" in
- /*) as_fn_error $? "fragment uses absolute path in \$libc_add_on_config_subdirs" "$LINENO" 5 ;;
- esac
- if test ! -d "$libc_add_on_srcdir/$d"; then
- as_fn_error $? "fragment wants to configure missing directory $d" "$LINENO" 5
- fi
- case "$libc_add_on" in
- /*) as_fn_error $? "relative path required for add-on using \$libc_add_on_config_subdirs" "$LINENO" 5 ;;
- esac
- subdirs="$subdirs $libc_add_on/$d"
- done
- }
- fi
- if test -n "$libc_add_on"; then
- if frags=`ls -d $libc_add_on_srcdir/sysdeps/*/preconfigure 2> /dev/null`
-then
- { $as_echo "$as_me:${as_lineno-$LINENO}: checking add-on $libc_add_on for preconfigure fragments" >&5
-$as_echo_n "checking add-on $libc_add_on for preconfigure fragments... " >&6; }
- for frag in $frags; do
- name=`echo "$frag" | sed 's@/[^/]*$@@;s@^.*/@@'`
- echo $ECHO_N "$name $ECHO_C" >&6
- . "$frag"
- done
- { $as_echo "$as_me:${as_lineno-$LINENO}: result: " >&5
-$as_echo "" >&6; }
-fi
- use_add_ons="$use_add_ons $libc_add_on"
- add_ons_pfx="$add_ons_pfx $libc_add_on/"
- test -z "$libc_add_on_canonical" ||
- add_ons_sfx="$add_ons_sfx /$libc_add_on_canonical"
- fi
- done
- # Use echo to strip excess whitespace.
- add_ons="`echo $use_add_ons`"
-fi
-
-
-
###
### By using the undocumented --enable-hacker-mode option for configure
test -n "$base_machine" || base_machine=$machine
+# Determine whether to use fpu or nofpu sysdeps directories.
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for use of fpu sysdeps directories" >&5
+$as_echo_n "checking for use of fpu sysdeps directories... " >&6; }
+if ${libc_cv_with_fp+:} false; then :
+ $as_echo_n "(cached) " >&6
+else
+ cat > conftest.c <<EOF
+#if $with_fp_cond
+int dummy;
+#else
+# error "no hardware floating point"
+#endif
+EOF
+libc_cv_with_fp=no
+if ${CC-cc} $CFLAGS $CPPFLAGS -S conftest.c -o conftest.s \
+ 1>&5 2>&5 ; then
+ libc_cv_with_fp=yes
+fi
+rm -f conftest*
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $libc_cv_with_fp" >&5
+$as_echo "$libc_cv_with_fp" >&6; }
+
+
{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for -fstack-protector" >&5
$as_echo_n "checking for -fstack-protector... " >&6; }
if ${libc_cv_ssp+:} false; then :
-o conftest conftest.S 1>&5 2>&5; then
# Do a link to see if the backend supports IFUNC relocs.
$READELF -r conftest 1>&5
- LC_ALL=C $READELF -r conftest | grep 'no relocations' >/dev/null || {
+ LC_ALL=C $READELF -Wr conftest | grep -q 'IRELATIVE\|R_SPARC_JMP_IREL' && {
libc_cv_ld_gnu_indirect_function=yes
}
fi
{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $libc_cv_gcc_indirect_function" >&5
$as_echo "$libc_cv_gcc_indirect_function" >&6; }
+# Check if linker supports textrel relocation with ifunc (used on elf/tests).
+# Note that it relies on libc_cv_ld_gnu_indirect_function test above.
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking whether the linker supports textrels along with ifunc" >&5
+$as_echo_n "checking whether the linker supports textrels along with ifunc... " >&6; }
+if ${libc_cv_textrel_ifunc+:} false; then :
+ $as_echo_n "(cached) " >&6
+else
+ cat > conftest.S <<EOF
+.type foo,%gnu_indirect_function
+foo:
+.globl _start
+_start:
+.globl __start
+__start:
+.data
+#ifdef _LP64
+.quad foo
+#else
+.long foo
+#endif
+.text
+.globl address
+address:
+#ifdef _LP64
+.quad address
+#else
+.long address
+#endif
+EOF
+libc_cv_textrel_ifunc=no
+if test $libc_cv_ld_gnu_indirect_function = yes; then
+ if { ac_try='${CC-cc} $CFLAGS $CPPFLAGS $LDFLAGS -nostartfiles -nostdlib $no_ssp -pie -o conftest conftest.S'
+ { { eval echo "\"\$as_me\":${as_lineno-$LINENO}: \"$ac_try\""; } >&5
+ (eval $ac_try) 2>&5
+ ac_status=$?
+ $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
+ test $ac_status = 0; }; }; then
+ libc_cv_textrel_ifunc=yes
+ fi
+fi
+rm -f conftest*
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $libc_cv_textrel_ifunc" >&5
+$as_echo "$libc_cv_textrel_ifunc" >&6; }
+
+
+# Check if CC supports attribute retain as it is used in attribute_used_retain macro.
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for GNU attribute retain support" >&5
+$as_echo_n "checking for GNU attribute retain support... " >&6; }
+if ${libc_cv_gnu_retain+:} false; then :
+ $as_echo_n "(cached) " >&6
+else
+ cat > conftest.c <<EOF
+static int var __attribute__ ((used, retain, section ("__libc_atexit")));
+EOF
+libc_cv_gnu_retain=no
+if ${CC-cc} -Werror -c conftest.c -o /dev/null 1>&5 \
+ 2>&5 ; then
+ libc_cv_gnu_retain=yes
+fi
+rm -f conftest*
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $libc_cv_gnu_retain" >&5
+$as_echo "$libc_cv_gnu_retain" >&6; }
+if test $libc_cv_gnu_retain = yes; then
+ $as_echo "#define HAVE_GNU_RETAIN 1" >>confdefs.h
+
+fi
+config_vars="$config_vars
+have-gnu-retain = $libc_cv_gnu_retain"
+
+# Check if gcc warns about alias for function with incompatible types.
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking if compiler warns about alias for function with incompatible types" >&5
+$as_echo_n "checking if compiler warns about alias for function with incompatible types... " >&6; }
+if ${libc_cv_gcc_incompatible_alias+:} false; then :
+ $as_echo_n "(cached) " >&6
+else
+ cat > conftest.c <<EOF
+int __redirect_foo (const void *s, int c);
+
+__typeof (__redirect_foo) *foo_impl (void) __asm__ ("foo");
+__typeof (__redirect_foo) *foo_impl (void)
+{
+ return 0;
+}
+
+extern __typeof (__redirect_foo) foo_alias __attribute__ ((alias ("foo")));
+EOF
+libc_cv_gcc_incompatible_alias=yes
+if ${CC-cc} -Werror -c conftest.c -o conftest.o 1>&5 2>&5 ; then
+ libc_cv_gcc_incompatible_alias=no
+fi
+rm -f conftest*
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $libc_cv_gcc_incompatible_alias" >&5
+$as_echo "$libc_cv_gcc_incompatible_alias" >&6; }
+
if test x"$libc_cv_ld_gnu_indirect_function" != xyes; then
if test x"$multi_arch" = xyes; then
as_fn_error $? "--enable-multi-arch support requires assembler and linker support" "$LINENO" 5
multi_arch=no
fi
fi
-if test x"$libc_cv_gcc_indirect_function" != xyes &&
- test x"$multi_arch" = xyes; then
- { $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: --enable-multi-arch support recommends a gcc with gnu-indirect-function support.
+if test x"$libc_cv_gcc_indirect_function" != xyes; then
+ # GCC 8+ emits a warning for alias with incompatible types and it might
+ # fail to build ifunc resolvers aliases to either weak or internal
+ # symbols. Disables multiarch build in this case.
+ if test x"$libc_cv_gcc_incompatible_alias" == xyes; then
+ { $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: gcc emits a warning for alias between functions of incompatible types" >&5
+$as_echo "$as_me: WARNING: gcc emits a warning for alias between functions of incompatible types" >&2;}
+ if test x"$multi_arch" = xyes; then
+ as_fn_error $? "--enable-multi-arch support requires a gcc with gnu-indirect-function support" "$LINENO" 5
+ fi
+ { $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: Multi-arch is disabled." >&5
+$as_echo "$as_me: WARNING: Multi-arch is disabled." >&2;}
+ multi_arch=no
+ elif test x"$multi_arch" = xyes; then
+ { $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: --enable-multi-arch support recommends a gcc with gnu-indirect-function support.
Please use a gcc which supports it by default or configure gcc with --enable-gnu-indirect-function" >&5
$as_echo "$as_me: WARNING: --enable-multi-arch support recommends a gcc with gnu-indirect-function support.
Please use a gcc which supports it by default or configure gcc with --enable-gnu-indirect-function" >&2;}
+ fi
fi
multi_arch_d=
if test x"$multi_arch" != xno; then
tail=$machine${submachine:+/$submachine}
while m=`echo $tail | sed 's@^\(.*\)/\([^/]*\)$@& \1@'`; test -n "$m"; do
set $m
- # Prepend the machine's FPU directory unless --without-fp.
- if test "$with_fp" = yes; then
+ # Prepend the machine's FPU directory unless the architecture specific
+ # preconfigure disables it.
+ if test "$libc_cv_with_fp" = yes; then
maybe_fpu=/fpu
else
maybe_fpu=/nofpu
# Find what sysdep directories exist.
-sysnames_add_ons=
sysnames=
for b in $base ''; do
for m0 in $mach ''; do
for o in /$ostry ''; do
test "$o" = / && continue
for m in $mach ''; do
- for d in $add_ons_pfx ''; do
- for a in $add_ons_sfx ''; do
- try_suffix="$m0$b$v$o$m"
- if test -n "$try_suffix"; then
- try_srcdir="${srcdir}/"
- case "$d" in
- /*) try_srcdir= ;;
- esac
- try="${d}sysdeps$try_suffix$a"
- test -n "$enable_debug_configure" &&
- echo "$0 DEBUG: try $try" >&2
- if test -d "$try_srcdir$try"; then
- sysnames="$sysnames $try"
- { test -n "$o" || test -n "$b"; } && os_used=t
- { test -n "$m" || test -n "$m0"; } && machine_used=t
- case x${m0:-$m} in
- x*/$submachine) submachine_used=t ;;
- esac
- if test -n "$d"; then
- case "$sysnames_add_ons" in
- *" $d "*) ;;
- *|'') sysnames_add_ons="$sysnames_add_ons $d" ;;
- esac
- fi
- fi
- fi
- done
- done
+ try_suffix="$m0$b$v$o$m"
+ if test -n "$try_suffix"; then
+ try_srcdir="${srcdir}/"
+ try="sysdeps$try_suffix"
+ test -n "$enable_debug_configure" &&
+ echo "$0 DEBUG: try $try" >&2
+ if test -d "$try_srcdir$try"; then
+ sysnames="$sysnames $try"
+ { test -n "$o" || test -n "$b"; } && os_used=t
+ { test -n "$m" || test -n "$m0"; } && machine_used=t
+ case x${m0:-$m} in
+ x*/$submachine) submachine_used=t ;;
+ esac
+ fi
+ fi
done
done
done
# If the assembler supports gnu_indirect_function symbol type and the
# architecture supports multi-arch, we enable multi-arch by default.
-case $sysnames_add_ons$sysnames in
+case $sysnames in
*"$multi_arch_d"*)
;;
*)
eval "${implies_type}=\"\$${implies_type} \$name_base/\$x\""
found=yes
fi
- for d in $add_ons_pfx ''; do
- try="${d}sysdeps/$x"
- case $d in
- /*) try_srcdir= ;;
- *) try_srcdir=$srcdir/ ;;
- esac
- test -n "$enable_debug_configure" &&
- echo "DEBUG: $name $implies_file $x try($d) {$try_srcdir}$try" >&2
- if test $try != $xsrcdir$name_base/$x && test -d $try_srcdir$try;
- then
- eval "${implies_type}=\"\$${implies_type} \$try\""
- found=yes
- case "$sysnames_add_ons" in
- *" $d "*) ;;
- *|'') sysnames_add_ons="$sysnames_add_ons $d" ;;
- esac
- fi
- done
+ try="sysdeps/$x"
+ try_srcdir=$srcdir/
+ test -n "$enable_debug_configure" &&
+ echo "DEBUG: $name $implies_file $x try() {$try_srcdir}$try" >&2
+ if test $try != $xsrcdir$name_base/$x && test -d $try_srcdir$try;
+ then
+ eval "${implies_type}=\"\$${implies_type} \$try\""
+ found=yes
+ fi
if test $found = no; then
{ $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: $name/$implies_file specifies nonexistent $x" >&5
$as_echo "$as_me: WARNING: $name/$implies_file specifies nonexistent $x" >&2;}
{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $default_sysnames" >&5
$as_echo "$default_sysnames" >&6; }
-# Collect the list of add-ons that supply partial sysdeps trees.
-sysdeps_add_ons=
-for add_on in $add_ons; do
- case "$add_on" in
- /*) xsrcdir= ;;
- *) xsrcdir="$srcdir/" ;;
- esac
-
- test -d "$xsrcdir$add_on/sysdeps" || {
- case "$configured_add_ons " in
- *" $add_on "*) ;;
- *|'')
- as_fn_error $? "add-on $add_on has no configure fragment or sysdeps tree" "$LINENO" 5
- ;;
- esac
- continue
- }
- sysdeps_add_ons="$sysdeps_add_ons $add_on"
- case "$sysnames_add_ons" in
- *" $add_on/ "*) ;;
- *|'')
- { $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: add-on $add_on contributed no sysdeps directories" >&5
-$as_echo "$as_me: WARNING: add-on $add_on contributed no sysdeps directories" >&2;}
- continue ;;
- esac
-
- found=no
- for d in $sysnames; do
- case "$d" in
- $add_on/sysdeps/*) ;;
- *) continue ;;
- esac
- (cd "$xsrcdir$d" && for f in *[!~]; do
- case "$f" in
- sys|bits)
- for ff in $f/*.h; do
- test -d "$ff" || { test -e "$ff" && exit 88; }
- done
- ;;
- *)
- test -d "$f" || { test -e "$f" && exit 88; }
- ;;
- esac
- done)
- if test $? -eq 88; then
- found=yes
- break
- fi
- done
- if test $found = no; then
- { $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: add-on $add_on contributed no useful sysdeps directories" >&5
-$as_echo "$as_me: WARNING: add-on $add_on contributed no useful sysdeps directories" >&2;}
- fi
-done
-
-
-
-### Locate tools.
+### Locate tools.
# Find a good install program. We prefer a C program (faster),
# so one script is as good as another. But avoid the broken or
OBJCOPY=`$CC -print-prog-name=objcopy`
+GPROF=`$CC -print-prog-name=gprof`
+
# Determine whether we are using GNU binutils.
{ $as_echo "$as_me:${as_lineno-$LINENO}: checking whether $AS is GNU as" >&5
gnu_ld=$libc_cv_prog_ld_gnu
-# Accept binutils 2.22 or newer.
+# Accept binutils 2.25 or newer.
for ac_prog in $AS
do
# Extract the first word of "$ac_prog", so it can be a program name with args.
ac_prog_version=`$AS --version 2>&1 | sed -n 's/^.*GNU assembler.* \([0-9]*\.[0-9.]*\).*$/\1/p'`
case $ac_prog_version in
'') ac_prog_version="v. ?.??, bad"; ac_verc_fail=yes;;
- 2.1[0-9][0-9]*|2.2[2-9]*|2.[3-9][0-9]*|[3-9].*|[1-9][0-9]*)
+ 2.1[0-9][0-9]*|2.2[5-9]*|2.[3-9][0-9]*|[3-9].*|[1-9][0-9]*)
ac_prog_version="$ac_prog_version, ok"; ac_verc_fail=no;;
*) ac_prog_version="$ac_prog_version, bad"; ac_verc_fail=yes;;
AS=: critic_missing="$critic_missing as"
fi
-for ac_prog in $LD
+
+libc_cv_with_lld=no
+case $($LD --version) in
+ "GNU gold"*)
+ # Accept gold 1.14 or higher
+ for ac_prog in $LD
+do
+ # Extract the first word of "$ac_prog", so it can be a program name with args.
+set dummy $ac_prog; ac_word=$2
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+$as_echo_n "checking for $ac_word... " >&6; }
+if ${ac_cv_prog_LD+:} false; then :
+ $as_echo_n "(cached) " >&6
+else
+ if test -n "$LD"; then
+ ac_cv_prog_LD="$LD" # Let the user override the test.
+else
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+ IFS=$as_save_IFS
+ test -z "$as_dir" && as_dir=.
+ for ac_exec_ext in '' $ac_executable_extensions; do
+ if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
+ ac_cv_prog_LD="$ac_prog"
+ $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
+ break 2
+ fi
+done
+ done
+IFS=$as_save_IFS
+
+fi
+fi
+LD=$ac_cv_prog_LD
+if test -n "$LD"; then
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: $LD" >&5
+$as_echo "$LD" >&6; }
+else
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+fi
+
+
+ test -n "$LD" && break
+done
+
+if test -z "$LD"; then
+ ac_verc_fail=yes
+else
+ # Found it, now check the version.
+ { $as_echo "$as_me:${as_lineno-$LINENO}: checking version of $LD" >&5
+$as_echo_n "checking version of $LD... " >&6; }
+ ac_prog_version=`$LD --version 2>&1 | sed -n 's/^.*GNU gold.* \([0-9][0-9]*\.[0-9.]*\).*$/\1/p'`
+ case $ac_prog_version in
+ '') ac_prog_version="v. ?.??, bad"; ac_verc_fail=yes;;
+ 1.1[4-9]*|1.[2-9][0-9]*|1.1[0-9][0-9]*|[2-9].*|[1-9][0-9]*)
+ ac_prog_version="$ac_prog_version, ok"; ac_verc_fail=no;;
+ *) ac_prog_version="$ac_prog_version, bad"; ac_verc_fail=yes;;
+
+ esac
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_prog_version" >&5
+$as_echo "$ac_prog_version" >&6; }
+fi
+if test $ac_verc_fail = yes; then
+ LD=: critic_missing="$critic_missing GNU gold"
+fi
+
+ ;;
+ "LLD"*)
+ # Accept LLD 13.0.0 or higher
+ for ac_prog in $LD
+do
+ # Extract the first word of "$ac_prog", so it can be a program name with args.
+set dummy $ac_prog; ac_word=$2
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+$as_echo_n "checking for $ac_word... " >&6; }
+if ${ac_cv_prog_LD+:} false; then :
+ $as_echo_n "(cached) " >&6
+else
+ if test -n "$LD"; then
+ ac_cv_prog_LD="$LD" # Let the user override the test.
+else
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+ IFS=$as_save_IFS
+ test -z "$as_dir" && as_dir=.
+ for ac_exec_ext in '' $ac_executable_extensions; do
+ if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
+ ac_cv_prog_LD="$ac_prog"
+ $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
+ break 2
+ fi
+done
+ done
+IFS=$as_save_IFS
+
+fi
+fi
+LD=$ac_cv_prog_LD
+if test -n "$LD"; then
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: $LD" >&5
+$as_echo "$LD" >&6; }
+else
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+fi
+
+
+ test -n "$LD" && break
+done
+
+if test -z "$LD"; then
+ ac_verc_fail=yes
+else
+ # Found it, now check the version.
+ { $as_echo "$as_me:${as_lineno-$LINENO}: checking version of $LD" >&5
+$as_echo_n "checking version of $LD... " >&6; }
+ ac_prog_version=`$LD --version 2>&1 | sed -n 's/^.*LLD.* \([0-9][0-9]*\.[0-9.]*\).*$/\1/p'`
+ case $ac_prog_version in
+ '') ac_prog_version="v. ?.??, bad"; ac_verc_fail=yes;;
+ 1[3-9].*|[2-9][0-9].*)
+ ac_prog_version="$ac_prog_version, ok"; ac_verc_fail=no;;
+ *) ac_prog_version="$ac_prog_version, bad"; ac_verc_fail=yes;;
+
+ esac
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_prog_version" >&5
+$as_echo "$ac_prog_version" >&6; }
+fi
+if test $ac_verc_fail = yes; then
+ LD=: critic_missing="$critic_missing LLD"
+fi
+
+ libc_cv_with_lld=yes
+ ;;
+ *)
+ for ac_prog in $LD
do
# Extract the first word of "$ac_prog", so it can be a program name with args.
set dummy $ac_prog; ac_word=$2
ac_prog_version=`$LD --version 2>&1 | sed -n 's/^.*GNU ld.* \([0-9][0-9]*\.[0-9.]*\).*$/\1/p'`
case $ac_prog_version in
'') ac_prog_version="v. ?.??, bad"; ac_verc_fail=yes;;
- 2.1[0-9][0-9]*|2.2[2-9]*|2.[3-9][0-9]*|[3-9].*|[1-9][0-9]*)
+ 2.1[0-9][0-9]*|2.2[5-9]*|2.[3-9][0-9]*|[3-9].*|[1-9][0-9]*)
ac_prog_version="$ac_prog_version, ok"; ac_verc_fail=no;;
*) ac_prog_version="$ac_prog_version, bad"; ac_verc_fail=yes;;
$as_echo "$ac_prog_version" >&6; }
fi
if test $ac_verc_fail = yes; then
- LD=: critic_missing="$critic_missing ld"
+ LD=: critic_missing="$critic_missing GNU ld"
fi
+ ;;
+esac
+config_vars="$config_vars
+with-lld = $libc_cv_with_lld"
# These programs are version sensitive.
-
for ac_prog in gnumake gmake make
do
# Extract the first word of "$ac_prog", so it can be a program name with args.
ac_prog_version=`$MAKE --version 2>&1 | sed -n 's/^.*GNU Make[^0-9]*\([0-9][0-9.]*\).*$/\1/p'`
case $ac_prog_version in
'') ac_prog_version="v. ?.??, bad"; ac_verc_fail=yes;;
- 3.79* | 3.[89]* | [4-9].* | [1-9][0-9]*)
+ [4-9].* | [1-9][0-9]*)
ac_prog_version="$ac_prog_version, ok"; ac_verc_fail=no;;
*) ac_prog_version="$ac_prog_version, bad"; ac_verc_fail=yes;;
critic_missing="$critic_missing gawk"
fi
+for ac_prog in bison
+do
+ # Extract the first word of "$ac_prog", so it can be a program name with args.
+set dummy $ac_prog; ac_word=$2
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+$as_echo_n "checking for $ac_word... " >&6; }
+if ${ac_cv_prog_BISON+:} false; then :
+ $as_echo_n "(cached) " >&6
+else
+ if test -n "$BISON"; then
+ ac_cv_prog_BISON="$BISON" # Let the user override the test.
+else
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+ IFS=$as_save_IFS
+ test -z "$as_dir" && as_dir=.
+ for ac_exec_ext in '' $ac_executable_extensions; do
+ if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
+ ac_cv_prog_BISON="$ac_prog"
+ $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
+ break 2
+ fi
+done
+ done
+IFS=$as_save_IFS
+
+fi
+fi
+BISON=$ac_cv_prog_BISON
+if test -n "$BISON"; then
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: $BISON" >&5
+$as_echo "$BISON" >&6; }
+else
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+fi
+
+
+ test -n "$BISON" && break
+done
+
+if test -z "$BISON"; then
+ ac_verc_fail=yes
+else
+ # Found it, now check the version.
+ { $as_echo "$as_me:${as_lineno-$LINENO}: checking version of $BISON" >&5
+$as_echo_n "checking version of $BISON... " >&6; }
+ ac_prog_version=`$BISON --version 2>&1 | sed -n 's/^.*bison (GNU Bison) \([0-9]*\.[0-9.]*\).*$/\1/p'`
+ case $ac_prog_version in
+ '') ac_prog_version="v. ?.??, bad"; ac_verc_fail=yes;;
+ 2.7*|[3-9].*|[1-9][0-9]*)
+ ac_prog_version="$ac_prog_version, ok"; ac_verc_fail=no;;
+ *) ac_prog_version="$ac_prog_version, bad"; ac_verc_fail=yes;;
+
+ esac
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_prog_version" >&5
+$as_echo "$ac_prog_version" >&6; }
+fi
+if test $ac_verc_fail = yes; then
+ critic_missing="$critic_missing bison"
+fi
+
{ $as_echo "$as_me:${as_lineno-$LINENO}: checking if $CC is sufficient to build libc" >&5
$as_echo_n "checking if $CC is sufficient to build libc... " >&6; }
main ()
{
-#if !defined __GNUC__ || __GNUC__ < 4 || (__GNUC__ == 4 && __GNUC_MINOR__ < 7)
+#if !defined __GNUC__ || __GNUC__ < 6 || (__GNUC__ == 6 && __GNUC_MINOR__ < 2)
#error insufficient compiler
#endif
;
return 0;
}
_ACEOF
-if ac_fn_c_try_compile "$LINENO"; then :
+if ac_fn_c_try_cpp "$LINENO"; then :
libc_cv_compiler_ok=yes
else
libc_cv_compiler_ok=no
fi
-rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+rm -f conftest.err conftest.i conftest.$ac_ext
fi
{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $libc_cv_compiler_ok" >&5
$as_echo "$libc_cv_compiler_ok" >&6; }
test -n "$PYTHON_PROG" && break
done
-test -n "$PYTHON_PROG" || PYTHON_PROG="no"
-case "x$PYTHON_PROG" in
-xno|x|x:) PYTHON_PROG=no ;;
-*) ;;
-esac
-
-if test "x$PYTHON_PROG" = xno; then
- aux_missing="$aux_missing python"
+if test -z "$PYTHON_PROG"; then
+ ac_verc_fail=yes
else
- PYTHON="$PYTHON_PROG -B"
+ # Found it, now check the version.
+ { $as_echo "$as_me:${as_lineno-$LINENO}: checking version of $PYTHON_PROG" >&5
+$as_echo_n "checking version of $PYTHON_PROG... " >&6; }
+ ac_prog_version=`$PYTHON_PROG --version 2>&1 | sed -n 's/^.*Python \([0-9][0-9.]*\).*$/\1/p'`
+ case $ac_prog_version in
+ '') ac_prog_version="v. ?.??, bad"; ac_verc_fail=yes;;
+ 3.[4-9]*|3.[1-9][0-9]*|[4-9].*|[1-9][0-9]*)
+ ac_prog_version="$ac_prog_version, ok"; ac_verc_fail=no;;
+ *) ac_prog_version="$ac_prog_version, bad"; ac_verc_fail=yes;;
+ esac
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_prog_version" >&5
+$as_echo "$ac_prog_version" >&6; }
fi
+if test $ac_verc_fail = yes; then
+ critic_missing="$critic_missing python"
+fi
+
+PYTHON="$PYTHON_PROG -B"
+
test -n "$critic_missing" && as_fn_error $? "
*** These critical programs are missing or too old:$critic_missing
fi
-for ac_prog in bison
-do
- # Extract the first word of "$ac_prog", so it can be a program name with args.
-set dummy $ac_prog; ac_word=$2
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
-$as_echo_n "checking for $ac_word... " >&6; }
-if ${ac_cv_prog_BISON+:} false; then :
- $as_echo_n "(cached) " >&6
-else
- if test -n "$BISON"; then
- ac_cv_prog_BISON="$BISON" # Let the user override the test.
-else
-as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
-for as_dir in $PATH
-do
- IFS=$as_save_IFS
- test -z "$as_dir" && as_dir=.
- for ac_exec_ext in '' $ac_executable_extensions; do
- if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
- ac_cv_prog_BISON="$ac_prog"
- $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
- break 2
- fi
-done
- done
-IFS=$as_save_IFS
-
-fi
-fi
-BISON=$ac_cv_prog_BISON
-if test -n "$BISON"; then
- { $as_echo "$as_me:${as_lineno-$LINENO}: result: $BISON" >&5
-$as_echo "$BISON" >&6; }
-else
- { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
-$as_echo "no" >&6; }
-fi
-
-
- test -n "$BISON" && break
-done
-
-if test -z "$BISON"; then
- ac_verc_fail=yes
-else
- # Found it, now check the version.
- { $as_echo "$as_me:${as_lineno-$LINENO}: checking version of $BISON" >&5
-$as_echo_n "checking version of $BISON... " >&6; }
- ac_prog_version=`$BISON --version 2>&1 | sed -n 's/^.*bison (GNU Bison) \([0-9]*\.[0-9.]*\).*$/\1/p'`
- case $ac_prog_version in
- '') ac_prog_version="v. ?.??, bad"; ac_verc_fail=yes;;
- 2.7*|[3-9].*|[1-9][0-9]*)
- ac_prog_version="$ac_prog_version, ok"; ac_verc_fail=no;;
- *) ac_prog_version="$ac_prog_version, bad"; ac_verc_fail=yes;;
-
- esac
- { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_prog_version" >&5
-$as_echo "$ac_prog_version" >&6; }
-fi
-if test $ac_verc_fail = yes; then
- BISON=no
-fi
-
{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for .set assembler directive" >&5
$as_echo_n "checking for .set assembler directive... " >&6; }
$as_echo "$libc_cv_protected_data" >&6; }
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking linker support for INSERT in linker script" >&5
+$as_echo_n "checking linker support for INSERT in linker script... " >&6; }
+if ${libc_cv_insert+:} false; then :
+ $as_echo_n "(cached) " >&6
+else
+ cat > conftest.c <<EOF
+ int __attribute__ ((section(".bar"))) bar = 0x12345678;
+ int test (void) { return bar; }
+EOF
+ cat > conftest.t <<EOF
+ SECTIONS
+ {
+ .bar : { *(.bar) }
+ }
+ INSERT AFTER .rela.dyn;
+EOF
+ libc_cv_insert=no
+ if { ac_try='${CC-cc} -nostdlib -nostartfiles $no_ssp -fPIC -shared conftest.c -Wl,-T,conftest.t -o conftest.so'
+ { { eval echo "\"\$as_me\":${as_lineno-$LINENO}: \"$ac_try\""; } >&5
+ (eval $ac_try) 2>&5
+ ac_status=$?
+ $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
+ test $ac_status = 0; }; }; then
+ libc_cv_insert=yes
+ fi
+ rm -f conftest.*
+
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $libc_cv_insert" >&5
+$as_echo "$libc_cv_insert" >&6; }
+
+
{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for broken __attribute__((alias()))" >&5
$as_echo_n "checking for broken __attribute__((alias()))... " >&6; }
if ${libc_cv_broken_alias_attribute+:} false; then :
fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking whether to use .ctors/.dtors header and trailer" >&5
-$as_echo_n "checking whether to use .ctors/.dtors header and trailer... " >&6; }
-if ${libc_cv_ctors_header+:} false; then :
- $as_echo_n "(cached) " >&6
-else
- libc_cv_ctors_header=yes
- cat > conftest.c <<EOF
-int _start (void) { return 0; }
-int __start (void) { return 0; }
-
-__attribute__ ((constructor)) void ctor (void) { asm (""); }
-__attribute__ ((destructor)) void dtor (void) { asm (""); }
-
-EOF
-if { ac_try='${CC-cc} $CFLAGS $CPPFLAGS $LDFLAGS $no_ssp -o conftest
- conftest.c -static -nostartfiles -nostdlib
- 1>&5'
- { { eval echo "\"\$as_me\":${as_lineno-$LINENO}: \"$ac_try\""; } >&5
- (eval $ac_try) 2>&5
- ac_status=$?
- $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
- test $ac_status = 0; }; }; then :
- if $READELF -WS conftest$ac_exeext | $AWK '
- { gsub(/\[ */, "[") }
- $2 == ".ctors" || $2 == ".dtors" {
- size = strtonum("0x" $6)
- align = strtonum("0x" $NF)
- seen[$2] = 1
- stub[$2] = size == align * 2
- }
- END {
- ctors_ok = !seen[".ctors"] || stub[".ctors"]
- dtors_ok = !seen[".dtors"] || stub[".dtors"]
- exit ((ctors_ok && dtors_ok) ? 0 : 1)
- }
- '; then :
- libc_cv_ctors_header=no
-fi
-
-else
- as_fn_error $? "missing __attribute__ ((constructor)) support??" "$LINENO" 5
-
-fi
-rm -f conftest*
-
-fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $libc_cv_ctors_header" >&5
-$as_echo "$libc_cv_ctors_header" >&6; }
-if test $libc_cv_ctors_header = no; then
- $as_echo "#define NO_CTORS_DTORS_SECTIONS 1" >>confdefs.h
-
-fi
-
{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for libunwind-support in compiler" >&5
$as_echo_n "checking for libunwind-support in compiler... " >&6; }
if ${libc_cv_cc_with_libunwind+:} false; then :
$as_echo "$libc_linker_feature" >&6; }
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for linker that supports -z start-stop-gc" >&5
+$as_echo_n "checking for linker that supports -z start-stop-gc... " >&6; }
+libc_linker_feature=no
+if test x"$gnu_ld" = x"yes"; then
+ libc_linker_check=`$LD -v --help 2>/dev/null | grep "\-z start-stop-gc"`
+ if test -n "$libc_linker_check"; then
+ cat > conftest.c <<EOF
+int _start (void) { return 42; }
+EOF
+ if { ac_try='${CC-cc} $CFLAGS $CPPFLAGS $LDFLAGS $no_ssp
+ -Wl,-z,start-stop-gc -nostdlib -nostartfiles
+ -fPIC -shared -o conftest.so conftest.c
+ 1>&5'
+ { { eval echo "\"\$as_me\":${as_lineno-$LINENO}: \"$ac_try\""; } >&5
+ (eval $ac_try) 2>&5
+ ac_status=$?
+ $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
+ test $ac_status = 0; }; }
+ then
+ libc_linker_feature=yes
+ fi
+ rm -f conftest*
+ fi
+fi
+if test $libc_linker_feature = yes; then
+ libc_cv_z_start_stop_gc=yes
+else
+ libc_cv_z_start_stop_gc=no
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $libc_linker_feature" >&5
+$as_echo "$libc_linker_feature" >&6; }
+config_vars="$config_vars
+have-z-start-stop-gc = $libc_cv_z_start_stop_gc"
+
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for linker that supports --depaudit" >&5
+$as_echo_n "checking for linker that supports --depaudit... " >&6; }
+libc_linker_feature=no
+if test x"$gnu_ld" = x"yes"; then
+ libc_linker_check=`$LD -v --help 2>/dev/null | grep "\--depaudit"`
+ if test -n "$libc_linker_check"; then
+ cat > conftest.c <<EOF
+int _start (void) { return 42; }
+EOF
+ if { ac_try='${CC-cc} $CFLAGS $CPPFLAGS $LDFLAGS $no_ssp
+ -Wl,--depaudit,x -nostdlib -nostartfiles
+ -fPIC -shared -o conftest.so conftest.c
+ 1>&5'
+ { { eval echo "\"\$as_me\":${as_lineno-$LINENO}: \"$ac_try\""; } >&5
+ (eval $ac_try) 2>&5
+ ac_status=$?
+ $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
+ test $ac_status = 0; }; }
+ then
+ libc_linker_feature=yes
+ fi
+ rm -f conftest*
+ fi
+fi
+if test $libc_linker_feature = yes; then
+ libc_cv_depaudit=yes
+else
+ libc_cv_depaudit=no
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $libc_linker_feature" >&5
+$as_echo "$libc_linker_feature" >&6; }
+config_vars="$config_vars
+have-depaudit = $libc_cv_depaudit"
+
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for linker that supports --no-dynamic-linker" >&5
+$as_echo_n "checking for linker that supports --no-dynamic-linker... " >&6; }
+libc_linker_feature=no
+if test x"$gnu_ld" = x"yes"; then
+ libc_linker_check=`$LD -v --help 2>/dev/null | grep "\--no-dynamic-linker"`
+ if test -n "$libc_linker_check"; then
+ cat > conftest.c <<EOF
+int _start (void) { return 42; }
+EOF
+ if { ac_try='${CC-cc} $CFLAGS $CPPFLAGS $LDFLAGS $no_ssp
+ -Wl,--no-dynamic-linker -nostdlib -nostartfiles
+ -fPIC -shared -o conftest.so conftest.c
+ 1>&5'
+ { { eval echo "\"\$as_me\":${as_lineno-$LINENO}: \"$ac_try\""; } >&5
+ (eval $ac_try) 2>&5
+ ac_status=$?
+ $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
+ test $ac_status = 0; }; }
+ then
+ libc_linker_feature=yes
+ fi
+ rm -f conftest*
+ fi
+fi
+if test $libc_linker_feature = yes; then
+ libc_cv_no_dynamic_linker=yes
+else
+ libc_cv_no_dynamic_linker=no
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $libc_linker_feature" >&5
+$as_echo "$libc_linker_feature" >&6; }
+config_vars="$config_vars
+have-no-dynamic-linker = $libc_cv_no_dynamic_linker"
+
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for -static-pie" >&5
+$as_echo_n "checking for -static-pie... " >&6; }
+if ${libc_cv_static_pie+:} false; then :
+ $as_echo_n "(cached) " >&6
+else
+ if { ac_try='${CC-cc} -static-pie -xc /dev/null -S -o /dev/null'
+ { { eval echo "\"\$as_me\":${as_lineno-$LINENO}: \"$ac_try\""; } >&5
+ (eval $ac_try) 2>&5
+ ac_status=$?
+ $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
+ test $ac_status = 0; }; }; then :
+ libc_cv_static_pie=yes
+else
+ libc_cv_static_pie=no
+fi
+
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $libc_cv_static_pie" >&5
+$as_echo "$libc_cv_static_pie" >&6; }
+config_vars="$config_vars
+have-static-pie = $libc_cv_static_pie"
+
{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for -fpie" >&5
$as_echo_n "checking for -fpie... " >&6; }
if ${libc_cv_fpie+:} false; then :
$as_echo "$libc_cv_has_glob_dat" >&6; }
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking linker output format" >&5
-$as_echo_n "checking linker output format... " >&6; }
-if ${libc_cv_output_format+:} false; then :
- $as_echo_n "(cached) " >&6
-else
- if libc_cv_output_format=`
-${CC-cc} -nostartfiles -nostdlib $no_ssp -Wl,--print-output-format 2>&5`
-then
- :
-else
- libc_cv_output_format=
-fi
-test -n "$libc_cv_output_format" || libc_cv_output_format=unknown
-fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $libc_cv_output_format" >&5
-$as_echo "$libc_cv_output_format" >&6; }
-
-
{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for -fno-toplevel-reorder -fno-section-anchors" >&5
$as_echo_n "checking for -fno-toplevel-reorder -fno-section-anchors... " >&6; }
if ${libc_cv_fno_toplevel_reorder+:} false; then :
fi
-# Some linkers on some architectures support __ehdr_start but with
-# bugs. Make sure usage of it does not create relocations in the
-# output (as the linker should resolve them all for us).
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking whether the linker provides working __ehdr_start" >&5
-$as_echo_n "checking whether the linker provides working __ehdr_start... " >&6; }
-if ${libc_cv_ehdr_start+:} false; then :
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking whether the assembler requires one version per symbol" >&5
+$as_echo_n "checking whether the assembler requires one version per symbol... " >&6; }
+if ${libc_cv_symver_needs_alias+:} false; then :
$as_echo_n "(cached) " >&6
else
-
-old_CFLAGS="$CFLAGS"
-old_LDFLAGS="$LDFLAGS"
-old_LIBS="$LIBS"
-CFLAGS="$CFLAGS -fPIC"
-LDFLAGS="$LDFLAGS -nostdlib -nostartfiles -shared $no_ssp"
-LIBS=
-cat confdefs.h - <<_ACEOF >conftest.$ac_ext
-/* end confdefs.h. */
-
-typedef struct {
- char foo;
- long val;
-} Ehdr;
-extern const Ehdr __ehdr_start __attribute__ ((visibility ("hidden")));
-long ehdr (void) { return __ehdr_start.val; }
-
-_ACEOF
-if ac_fn_c_try_link "$LINENO"; then :
- if $READELF -r conftest | grep -F __ehdr_start >/dev/null; then
- libc_cv_ehdr_start=broken
- else
- libc_cv_ehdr_start=yes
- fi
-else
- libc_cv_ehdr_start=no
-fi
-rm -f core conftest.err conftest.$ac_objext \
- conftest$ac_exeext conftest.$ac_ext
-CFLAGS="$old_CFLAGS"
-LDFLAGS="$old_LDFLAGS"
-LIBS="$old_LIBS"
+ cat > conftest.s <<EOF
+ .text
+testfunc:
+ .globl testfunc
+ .symver testfunc, testfunc1@VERSION1
+ .symver testfunc, testfunc1@VERSION2
+EOF
+ libc_cv_symver_needs_alias=no
+ if ${CC-cc} $ASFLAGS -c conftest.s 2>&5; then
+ libc_cv_symver_needs_alias=no
+ else
+ libc_cv_symver_needs_alias=yes
+ fi
+ rm conftest.*
fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $libc_cv_ehdr_start" >&5
-$as_echo "$libc_cv_ehdr_start" >&6; }
-if test "$libc_cv_ehdr_start" = yes; then
- $as_echo "#define HAVE_EHDR_START 1" >>confdefs.h
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $libc_cv_symver_needs_alias" >&5
+$as_echo "$libc_cv_symver_needs_alias" >&6; }
+if test "$libc_cv_symver_needs_alias" = yes; then
+ $as_echo "#define SYMVER_NEEDS_ALIAS 1" >>confdefs.h
-elif test "$libc_cv_ehdr_start" = broken; then
- { $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: linker is broken -- you should upgrade" >&5
-$as_echo "$as_me: WARNING: linker is broken -- you should upgrade" >&2;}
fi
{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for __builtin_trap with no external dependencies" >&5
libc_cv_localstatedir=$localstatedir
libc_cv_gcc_unwind_find_fde=no
libc_cv_idn=no
+pthread_in_libc=yes
# Iterate over all the sysdep directories we will use, running their
# configure fragments.
$as_echo "#define HAVE_IFUNC 1" >>confdefs.h
fi
+config_vars="$config_vars
+have-ifunc = $libc_cv_ld_gnu_indirect_function"
if test x"$libc_cv_gcc_indirect_function" = xyes; then
$as_echo "#define HAVE_GCC_IFUNC 1" >>confdefs.h
fi
+config_vars="$config_vars
+have-gcc-ifunc = $libc_cv_gcc_indirect_function"
# This is far from the AC_ARG_ENABLE that sets it so that a sysdeps
# configure fragment can override the value to prevent this AC_DEFINE.
{ $as_echo "$as_me:${as_lineno-$LINENO}: checking whether -fPIE is default" >&5
$as_echo_n "checking whether -fPIE is default... " >&6; }
-if ${libc_cv_pie_default+:} false; then :
+if ${libc_cv_cc_pie_default+:} false; then :
$as_echo_n "(cached) " >&6
else
- libc_cv_pie_default=yes
+ libc_cv_cc_pie_default=yes
cat > conftest.c <<EOF
#if defined __PIE__ || defined __pie__ || defined PIE || defined pie
# error PIE is default.
#endif
EOF
if eval "${CC-cc} -S conftest.c 2>&5 1>&5"; then
- libc_cv_pie_default=no
+ libc_cv_cc_pie_default=no
fi
rm -f conftest.*
fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $libc_cv_pie_default" >&5
-$as_echo "$libc_cv_pie_default" >&6; }
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $libc_cv_cc_pie_default" >&5
+$as_echo "$libc_cv_cc_pie_default" >&6; }
+libc_cv_pie_default=$libc_cv_cc_pie_default
+
+
+
+# Set the `multidir' variable by grabbing the variable from the compiler.
+# We do it once and save the result in a generated makefile.
+libc_cv_multidir=`${CC-cc} $CFLAGS $CPPFLAGS -print-multi-directory`
+
+
+if test "$static_pie" = yes; then
+ # Check target support for static PIE
+ cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h. */
+#ifndef SUPPORT_STATIC_PIE
+# error static PIE is not supported
+#endif
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"; then :
+
+else
+ as_fn_error $? "the architecture does not support static PIE" "$LINENO" 5
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+ # The linker must support --no-dynamic-linker.
+ if test "$libc_cv_no_dynamic_linker" != yes; then
+ as_fn_error $? "linker support for --no-dynamic-linker needed" "$LINENO" 5
+ fi
+ # Default to PIE.
+ libc_cv_pie_default=yes
+ $as_echo "#define ENABLE_STATIC_PIE 1" >>confdefs.h
+fi
+config_vars="$config_vars
+enable-static-pie = $static_pie"
+if test "$pthread_in_libc" = yes; then
+ $as_echo "#define PTHREAD_IN_LIBC 1" >>confdefs.h
+
+fi
+
+
ac_config_files="$ac_config_files config.make Makefile"
ac_config_commands="$ac_config_commands default"
Configuration commands:
$config_commands
-Report bugs to <http://sourceware.org/bugzilla/>.
-GNU C Library home page: <http://www.gnu.org/software/glibc/>.
+Report bugs to <https://sourceware.org/bugzilla/>.
+GNU C Library home page: <https://www.gnu.org/software/glibc/>.
General help using GNU software: <http://www.gnu.org/gethelp/>."
_ACEOF