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23645707f1
Build glibc programs and tests as PIE by default and enable static-pie automatically if the architecture and toolchain supports it. Also add a new configuration option --disable-default-pie to prevent building programs as PIE. Only the following architectures now have PIE disabled by default because they do not work at the moment. hppa, ia64, alpha and csky don't work because the linker is unable to handle a pcrel relocation generated from PIE objects. The microblaze compiler is currently failing with an ICE. GNU hurd tries to enable static-pie, which does not work and hence fails. All these targets have default PIE disabled at the moment and I have left it to the target maintainers to enable PIE on their targets. build-many-glibcs runs clean for all targets. I also tested x86_64 on Fedora and Ubuntu, to verify that the default build as well as --disable-default-pie work as expected with both system toolchains. Signed-off-by: Siddhesh Poyarekar <siddhesh@sourceware.org> Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
58 lines
1.4 KiB
Plaintext
58 lines
1.4 KiB
Plaintext
# This file is generated from configure.ac by Autoconf. DO NOT EDIT!
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$as_echo "#define NO_RTLD_HIDDEN 1" >>confdefs.h
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if test -n "$sysheaders"; then
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OLD_CPPFLAGS=$CPPFLAGS
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CPPFLAGS="$CPPFLAGS $SYSINCLUDES"
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fi
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{ $as_echo "$as_me:${as_lineno-$LINENO}: checking Hurd header version" >&5
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$as_echo_n "checking Hurd header version... " >&6; }
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if ${libc_cv_hurd_version+:} false; then :
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$as_echo_n "(cached) " >&6
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else
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cat confdefs.h - <<_ACEOF >conftest.$ac_ext
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/* end confdefs.h. */
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#include <hurd/version.h>
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int
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main ()
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{
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#define NEED_VERSION 20020609
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#if HURD_INTERFACE_VERSION < NEED_VERSION
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# error Hurd version too old: HURD_INTERFACE_VERSION < NEED_VERSION
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#endif
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;
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return 0;
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}
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_ACEOF
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if ac_fn_c_try_cpp "$LINENO"; then :
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libc_cv_hurd_version=ok
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else
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libc_cv_hurd_version=bad
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fi
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rm -f conftest.err conftest.i conftest.$ac_ext
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fi
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{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $libc_cv_hurd_version" >&5
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$as_echo "$libc_cv_hurd_version" >&6; }
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if test "x$libc_cv_hurd_version" != xok; then
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as_fn_error $? "Hurd headers not installed or too old" "$LINENO" 5
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fi
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if test -n "$sysheaders"; then
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CPPFLAGS=$OLD_CPPFLAGS
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fi
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# Hurd has libpthread as a separate library.
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pthread_in_libc=no
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# Hurd build needs to be updated to support static pie, see:
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# https://sourceware.org/bugzilla/show_bug.cgi?id=28671
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$as_echo "#define PIE_UNSUPPORTED 1" >>confdefs.h
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# work around problem with autoconf and empty lines at the end of files
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