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Allow clang compilation for thumb with -mthumb-interwork. 

clang already uses -mthumb-interwork behaviour even thout it doesn't
support the option.
This commit is contained in:
Vladimir Serbinenko 2015-02-22 17:45:30 +01:00
parent 345076a78a
commit 2066c35b3f
1 changed files with 1 additions and 12 deletions
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13
configure.ac
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@ -1029,20 +1029,9 @@ if test "x$target_cpu" = xarm; then
])
if test "x$grub_cv_cc_mthumb_interwork" = xyes; then
TARGET_CFLAGS="$TARGET_CFLAGS -mthumb-interwork"
# Clang defaults to thumb interworking
elif test "x$grub_cv_cc_target_clang" = xno ; then
AC_MSG_ERROR([your compiler doesn't support -mthumb-interwork])
else
CFLAGS="$TARGET_CFLAGS"
AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[]], [[
#if defined (__thumb__) && !defined (__thumb2__)
#error thumb without interworking
#endif
]])],
[no_interwork_ok=yes],
[no_interwork_ok=no])
if test x$no_interwork_ok = xno ; then
AC_MSG_ERROR([attempt to compile to thumb with no thumb interwork])
fi
fi
fi