configure.ac (--enable-libssp): New.
2017-10-31 Sandra Loosemore <sandra@codesourcery.com> gcc/ * configure.ac (--enable-libssp): New. (gcc_cv_libc_provides_ssp): Check for explicit setting before trying to determine target-specific default. Adjust indentation. * configure: Regenerated. * doc/install.texi (Configuration): Expand --disable-libssp documentation. From-SVN: r254288
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Sandra Loosemore
Sandra Loosemore
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@ -1,3 +1,12 @@
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2017-10-31 Sandra Loosemore <sandra@codesourcery.com>
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* configure.ac (--enable-libssp): New.
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(gcc_cv_libc_provides_ssp): Check for explicit setting before
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trying to determine target-specific default. Adjust indentation.
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* configure: Regenerated.
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* doc/install.texi (Configuration): Expand --disable-libssp
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documentation.
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2017-10-31 Daniel Santos <daniel.santos@pobox.com>
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config/i386/i386.c (ix86_expand_epilogue): Correct stack
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26
gcc/configure
vendored
26
gcc/configure
vendored
@ -942,6 +942,7 @@ enable_fix_cortex_a53_843419
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with_glibc_version
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enable_gnu_unique_object
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enable_linker_build_id
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enable_libssp
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enable_default_ssp
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with_long_double_128
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with_gc
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@ -1682,6 +1683,7 @@ Optional Features:
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extension on glibc systems
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--enable-linker-build-id
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compiler will always pass --build-id to linker
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--enable-libssp enable linking against libssp
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--enable-default-ssp enable Stack Smashing Protection as default
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--enable-maintainer-mode
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enable make rules and dependencies not useful (and
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@ -18440,7 +18442,7 @@ else
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lt_dlunknown=0; lt_dlno_uscore=1; lt_dlneed_uscore=2
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lt_status=$lt_dlunknown
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cat > conftest.$ac_ext <<_LT_EOF
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#line 18443 "configure"
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#line 18445 "configure"
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#include "confdefs.h"
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#if HAVE_DLFCN_H
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@ -18546,7 +18548,7 @@ else
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lt_dlunknown=0; lt_dlno_uscore=1; lt_dlneed_uscore=2
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lt_status=$lt_dlunknown
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cat > conftest.$ac_ext <<_LT_EOF
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#line 18549 "configure"
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#line 18551 "configure"
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#include "confdefs.h"
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#if HAVE_DLFCN_H
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@ -29040,6 +29042,18 @@ $as_echo "#define HAVE_SOLARIS_CRTS 1" >>confdefs.h
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fi
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# Check whether --enable-libssp was given.
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if test "${enable_libssp+set}" = set; then :
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enableval=$enable_libssp; case "${enableval}" in
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yes|no)
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;;
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*)
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as_fn_error "unknown libssp setting $enableval" "$LINENO" 5
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;;
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esac
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fi
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# Test for stack protector support in target C library.
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{ $as_echo "$as_me:${as_lineno-$LINENO}: checking __stack_chk_fail in target C library" >&5
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$as_echo_n "checking __stack_chk_fail in target C library... " >&6; }
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@ -29047,6 +29061,11 @@ if test "${gcc_cv_libc_provides_ssp+set}" = set; then :
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$as_echo_n "(cached) " >&6
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else
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gcc_cv_libc_provides_ssp=no
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if test "x$enable_libssp" = "xno"; then
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gcc_cv_libc_provides_ssp=yes
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elif test "x$enable_libssp" = "xyes"; then
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gcc_cv_libc_provides_ssp=no
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else
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case "$target" in
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*-*-musl*)
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# All versions of musl provide stack protector
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@ -29094,8 +29113,9 @@ else
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fi
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;;
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*) gcc_cv_libc_provides_ssp=no ;;
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*) gcc_cv_libc_provides_ssp=no ;;
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esac
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fi
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fi
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{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $gcc_cv_libc_provides_ssp" >&5
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$as_echo "$gcc_cv_libc_provides_ssp" >&6; }
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@ -5756,10 +5756,25 @@ if test x$gcc_cv_solaris_crts = xyes; then
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[Define if the system-provided CRTs are present on Solaris.])
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fi
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AC_ARG_ENABLE(libssp,
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[AS_HELP_STRING([--enable-libssp], [enable linking against libssp])],
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[case "${enableval}" in
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yes|no)
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;;
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*)
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AC_MSG_ERROR([unknown libssp setting $enableval])
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;;
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esac], [])
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# Test for stack protector support in target C library.
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AC_CACHE_CHECK(__stack_chk_fail in target C library,
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gcc_cv_libc_provides_ssp,
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[gcc_cv_libc_provides_ssp=no
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gcc_cv_libc_provides_ssp,
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[gcc_cv_libc_provides_ssp=no
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if test "x$enable_libssp" = "xno"; then
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gcc_cv_libc_provides_ssp=yes
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elif test "x$enable_libssp" = "xyes"; then
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gcc_cv_libc_provides_ssp=no
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else
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case "$target" in
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*-*-musl*)
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# All versions of musl provide stack protector
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@ -5796,8 +5811,9 @@ AC_CACHE_CHECK(__stack_chk_fail in target C library,
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AC_CHECK_FUNC(__stack_chk_fail,[gcc_cv_libc_provides_ssp=yes],
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[echo "no __stack_chk_fail on this target"])
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;;
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*) gcc_cv_libc_provides_ssp=no ;;
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esac])
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*) gcc_cv_libc_provides_ssp=no ;;
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esac
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fi])
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if test x$gcc_cv_libc_provides_ssp = xyes; then
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AC_DEFINE(TARGET_LIBC_PROVIDES_SSP, 1,
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@ -1640,7 +1640,8 @@ not be built.
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@item --disable-libssp
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Specify that the run-time libraries for stack smashing protection
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should not be built.
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should not be built or linked against. On many targets library support
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is provided by the C library instead.
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@item --disable-libquadmath
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Specify that the GCC quad-precision math library should not be built.
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