mirror of https://github.com/encounter/SDL.git
Fixed bug 4308 - Prebuilt SDL.dll files not compiled with ASLR support (DYNAMICBASE)
Cameron Gutman The current SDL 2.0.8 and the prerelease SDL 2.0.9 are compiled without the DYNAMICBASE flag to indicate that ASLR may relocate the DLL at load-time. https://docs.microsoft.com/en-us/cpp/build/reference/dynamicbase-use-address-space-layout-randomization?view=vs-2017 When I build SDL.dll myself using the VS2010 project, the DLL has the DYNAMICBASE flag set (as is the default). Similarly, MinGW-w64 also enables ASLR by default on all binaries for a couple years now (https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=836365)
This commit is contained in:
Sam Lantinga
parent
cc39c7a0cb
commit
4026f89d19
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@ -16063,6 +16063,108 @@ esac
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{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $have_no_undefined" >&5
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{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $have_no_undefined" >&5
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$as_echo "$have_no_undefined" >&6; }
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$as_echo "$have_no_undefined" >&6; }
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{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for linker option --dynamicbase" >&5
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$as_echo_n "checking for linker option --dynamicbase... " >&6; }
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have_dynamicbase=no
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case "$host" in
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*)
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save_LDFLAGS="$LDFLAGS"
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LDFLAGS="$LDFLAGS -Wl,--dynamicbase"
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cat confdefs.h - <<_ACEOF >conftest.$ac_ext
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/* end confdefs.h. */
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int
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main ()
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{
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;
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return 0;
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}
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_ACEOF
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if ac_fn_c_try_link "$LINENO"; then :
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have_dynamicbase=yes
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EXTRA_LDFLAGS="$EXTRA_LDFLAGS -Wl,--dynamicbase"
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fi
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rm -f core conftest.err conftest.$ac_objext \
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conftest$ac_exeext conftest.$ac_ext
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LDFLAGS="$save_LDFLAGS"
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;;
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esac
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{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $have_dynamicbase" >&5
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$as_echo "$have_dynamicbase" >&6; }
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{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for linker option --nxcompat" >&5
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$as_echo_n "checking for linker option --nxcompat... " >&6; }
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have_nxcompat=no
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case "$host" in
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*)
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save_LDFLAGS="$LDFLAGS"
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LDFLAGS="$LDFLAGS -Wl,--nxcompat"
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cat confdefs.h - <<_ACEOF >conftest.$ac_ext
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/* end confdefs.h. */
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int
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main ()
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{
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;
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return 0;
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}
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_ACEOF
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if ac_fn_c_try_link "$LINENO"; then :
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have_nxcompat=yes
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EXTRA_LDFLAGS="$EXTRA_LDFLAGS -Wl,--nxcompat"
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fi
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rm -f core conftest.err conftest.$ac_objext \
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conftest$ac_exeext conftest.$ac_ext
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LDFLAGS="$save_LDFLAGS"
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;;
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esac
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{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $have_nxcompat" >&5
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$as_echo "$have_nxcompat" >&6; }
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{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for linker option --high-entropy-va" >&5
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$as_echo_n "checking for linker option --high-entropy-va... " >&6; }
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have_high_entropy_va=no
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case "$host" in
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*)
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save_LDFLAGS="$LDFLAGS"
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LDFLAGS="$LDFLAGS -Wl,--high-entropy-va"
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cat confdefs.h - <<_ACEOF >conftest.$ac_ext
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/* end confdefs.h. */
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int
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main ()
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{
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;
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return 0;
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}
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_ACEOF
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if ac_fn_c_try_link "$LINENO"; then :
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have_high_entropy_va=yes
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EXTRA_LDFLAGS="$EXTRA_LDFLAGS -Wl,--high-entropy-va"
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fi
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rm -f core conftest.err conftest.$ac_objext \
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conftest$ac_exeext conftest.$ac_ext
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LDFLAGS="$save_LDFLAGS"
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;;
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esac
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{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $have_high_entropy_va" >&5
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$as_echo "$have_high_entropy_va" >&6; }
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# Check whether --enable-libc was given.
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# Check whether --enable-libc was given.
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if test "${enable_libc+set}" = set; then :
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if test "${enable_libc+set}" = set; then :
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enableval=$enable_libc;
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enableval=$enable_libc;
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51
configure.in
51
configure.in
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@ -232,6 +232,57 @@ case "$host" in
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esac
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esac
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AC_MSG_RESULT($have_no_undefined)
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AC_MSG_RESULT($have_no_undefined)
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AC_MSG_CHECKING(for linker option --dynamicbase)
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have_dynamicbase=no
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case "$host" in
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*)
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save_LDFLAGS="$LDFLAGS"
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LDFLAGS="$LDFLAGS -Wl,--dynamicbase"
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AC_TRY_LINK([
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],[
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],[
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have_dynamicbase=yes
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EXTRA_LDFLAGS="$EXTRA_LDFLAGS -Wl,--dynamicbase"
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])
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LDFLAGS="$save_LDFLAGS"
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;;
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esac
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AC_MSG_RESULT($have_dynamicbase)
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AC_MSG_CHECKING(for linker option --nxcompat)
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have_nxcompat=no
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case "$host" in
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*)
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save_LDFLAGS="$LDFLAGS"
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LDFLAGS="$LDFLAGS -Wl,--nxcompat"
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AC_TRY_LINK([
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],[
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],[
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have_nxcompat=yes
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EXTRA_LDFLAGS="$EXTRA_LDFLAGS -Wl,--nxcompat"
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])
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LDFLAGS="$save_LDFLAGS"
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;;
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esac
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AC_MSG_RESULT($have_nxcompat)
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AC_MSG_CHECKING(for linker option --high-entropy-va)
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have_high_entropy_va=no
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case "$host" in
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*)
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save_LDFLAGS="$LDFLAGS"
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LDFLAGS="$LDFLAGS -Wl,--high-entropy-va"
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AC_TRY_LINK([
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],[
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],[
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have_high_entropy_va=yes
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EXTRA_LDFLAGS="$EXTRA_LDFLAGS -Wl,--high-entropy-va"
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])
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LDFLAGS="$save_LDFLAGS"
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;;
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esac
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AC_MSG_RESULT($have_high_entropy_va)
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dnl See whether we are allowed to use the system C library
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dnl See whether we are allowed to use the system C library
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AC_ARG_ENABLE(libc,
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AC_ARG_ENABLE(libc,
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AC_HELP_STRING([--enable-libc], [Use the system C library [[default=yes]]]),
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AC_HELP_STRING([--enable-libc], [Use the system C library [[default=yes]]]),
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