config: Sync with GCC
Sync with GCC 2018-04-05 H.J. Lu <hongjiu.lu@intel.com> PR gas/22318 * plugins.m4 (AC_PLUGINS): Use dlsym to check if libdl is needed. 2018-02-14 Igor Tsimbalist <igor.v.tsimbalist@intel.com> PR target/84148 * cet.m4: Check if target support multi-byte NOPS (SSE).
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@ -1,3 +1,16 @@
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2018-04-05 H.J. Lu <hongjiu.lu@intel.com>
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Sync with GCC
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2018-04-05 H.J. Lu <hongjiu.lu@intel.com>
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PR gas/22318
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* plugins.m4 (AC_PLUGINS): Use dlsym to check if libdl is needed.
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2018-02-14 Igor Tsimbalist <igor.v.tsimbalist@intel.com>
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PR target/84148
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* cet.m4: Check if target support multi-byte NOPS (SSE).
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2018-02-06 Eric Botcazou <ebotcazou@adacore.com>
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* gcc-plugin.m4 (GCC_ENABLE_PLUGINS): Remove -q option passed to grep.
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@ -5,15 +5,24 @@ dnl
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AC_DEFUN([GCC_CET_FLAGS],[dnl
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GCC_ENABLE(cet, default, ,[enable Intel CET in target libraries],
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permit yes|no|default)
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AC_MSG_CHECKING([for CET support])
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case "$host" in
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i[[34567]]86-*-linux* | x86_64-*-linux*)
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case "$enable_cet" in
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default)
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# Check if assembler supports CET.
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# Check if target supports multi-byte NOPs
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# and if assembler supports CET insn.
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AC_COMPILE_IFELSE(
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[AC_LANG_PROGRAM(
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[],
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[asm ("setssbsy");])],
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[
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#if !defined(__SSE2__)
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#error target does not support multi-byte NOPs
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#else
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asm ("setssbsy");
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#endif
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])],
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[enable_cet=yes],
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[enable_cet=no])
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;;
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@ -34,5 +43,8 @@ case "$host" in
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esac
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if test x$enable_cet = xyes; then
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$1="-fcf-protection -mcet"
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AC_MSG_RESULT([yes])
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else
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AC_MSG_RESULT([no])
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fi
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])
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@ -16,6 +16,6 @@ AC_DEFUN([AC_PLUGINS],
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[plugins=$maybe_plugins]
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)
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if test "$plugins" = "yes"; then
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AC_SEARCH_LIBS([dlopen], [dl])
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AC_SEARCH_LIBS([dlsym], [dl])
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fi
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])
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