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|
dnl
dnl GCC_CET_FLAGS
dnl (SHELL-CODE_HANDLER)
dnl
AC_DEFUN([GCC_CET_FLAGS],[dnl
GCC_ENABLE(cet, default, ,[enable Intel CET in target libraries],
permit yes|no|default)
case "$host" in
i[[34567]]86-*-linux* | x86_64-*-linux*)
case "$enable_cet" in
default)
# Check if assembler supports CET.
AC_COMPILE_IFELSE(
[AC_LANG_PROGRAM(
[],
[asm ("setssbsy");])],
[enable_cet=yes],
[enable_cet=no])
;;
yes)
# Check if assembler supports CET.
AC_COMPILE_IFELSE(
[AC_LANG_PROGRAM(
[],
[asm ("setssbsy");])],
[],
[AC_MSG_ERROR([assembler with CET support is required for --enable-cet])])
;;
esac
;;
*)
enable_cet=no
;;
esac
if test x$enable_cet = xyes; then
$1="-fcf-protection -mcet"
fi
])
AC_DEFUN([GCC_CET_LDFLAGS],[dnl
GCC_ENABLE(cet-property, no, ,[enable Intel CET property in target libraries],
permit yes|no|default)
case "$host" in
i[[34567]]86-*-linux* | x86_64-*-linux*)
if test x$enable_cet_property = xyes; then
# Check if CET is enabled.
if test x$enable_cet != xyes; then
AC_MSG_ERROR([CET must be enabled for --enable-cet-property])
fi
fi
;;
*)
enable_cet_property=no
;;
esac
if test x$enable_cet_property = xyes; then
$1="-Wl,-z,ibt,-z,shstk"
fi
])
|
