diff options
Diffstat (limited to 'libphobos/configure')
| -rwxr-xr-x | libphobos/configure | 91 |
1 files changed, 89 insertions, 2 deletions
diff --git a/libphobos/configure b/libphobos/configure index e461c7442b2..c8137d4d572 100755 --- a/libphobos/configure +++ b/libphobos/configure @@ -722,6 +722,7 @@ LIBTOOL CFLAGS_FOR_BUILD CC_FOR_BUILD AR +CET_FLAGS RANLIB MAINT MAINTAINER_MODE_FALSE @@ -824,6 +825,7 @@ enable_option_checking enable_multilib enable_silent_rules enable_maintainer_mode +enable_cet enable_shared enable_static with_pic @@ -1476,6 +1478,7 @@ Optional Features: --enable-maintainer-mode enable make rules and dependencies not useful (and sometimes confusing) to the casual installer + --enable-cet enable Intel CET in target libraries [default=no] --enable-shared[=PKGS] build shared libraries [default=yes] --enable-static[=PKGS] build static libraries [default=yes] --enable-fast-install[=PKGS] @@ -5560,6 +5563,90 @@ $as_echo "no" >&6; } fi +# Add CET specific flags if CET is enabled + # Check whether --enable-cet was given. +if test "${enable_cet+set}" = set; then : + enableval=$enable_cet; + case "$enableval" in + yes|no|auto) ;; + *) as_fn_error $? "Unknown argument to enable/disable cet" "$LINENO" 5 ;; + esac + +else + enable_cet=no +fi + + +{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for CET support" >&5 +$as_echo_n "checking for CET support... " >&6; } + +case "$host" in + i[34567]86-*-linux* | x86_64-*-linux*) + case "$enable_cet" in + auto) + # Check if target supports multi-byte NOPs + # and if assembler supports CET insn. + cat confdefs.h - <<_ACEOF >conftest.$ac_ext +/* end confdefs.h. */ + +int +main () +{ + +#if !defined(__SSE2__) +#error target does not support multi-byte NOPs +#else +asm ("setssbsy"); +#endif + + ; + return 0; +} +_ACEOF +if ac_fn_c_try_compile "$LINENO"; then : + enable_cet=yes +else + enable_cet=no +fi +rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext + ;; + yes) + # Check if assembler supports CET. + cat confdefs.h - <<_ACEOF >conftest.$ac_ext +/* end confdefs.h. */ + +int +main () +{ +asm ("setssbsy"); + ; + return 0; +} +_ACEOF +if ac_fn_c_try_compile "$LINENO"; then : + +else + as_fn_error $? "assembler with CET support is required for --enable-cet" "$LINENO" 5 +fi +rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext + ;; + esac + ;; + *) + enable_cet=no + ;; +esac +if test x$enable_cet = xyes; then + CET_FLAGS="-fcf-protection -mshstk" + { $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5 +$as_echo "yes" >&6; } +else + { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5 +$as_echo "no" >&6; } +fi + + + # This should be inherited in the recursive make, but ensure it is defined. test "$AR" || AR=ar @@ -11647,7 +11734,7 @@ else lt_dlunknown=0; lt_dlno_uscore=1; lt_dlneed_uscore=2 lt_status=$lt_dlunknown cat > conftest.$ac_ext <<_LT_EOF -#line 11650 "configure" +#line 11737 "configure" #include "confdefs.h" #if HAVE_DLFCN_H @@ -11753,7 +11840,7 @@ else lt_dlunknown=0; lt_dlno_uscore=1; lt_dlneed_uscore=2 lt_status=$lt_dlunknown cat > conftest.$ac_ext <<_LT_EOF -#line 11756 "configure" +#line 11843 "configure" #include "confdefs.h" #if HAVE_DLFCN_H |