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Allow compilation without thumb-interwork as long as no thumb is

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involved or only thumb2 is used.
This commit is contained in:
Vladimir Serbinenko 2013-12-18 13:33:39 +01:00
parent 063f2a04d1
commit a29f317af1
4 changed files with 29 additions and 2 deletions
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23
configure.ac
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@ -871,6 +871,29 @@ if test "x$target_cpu" = xarm; then
if test "x$grub_cv_cc_mlong_calls" = xyes; then
TARGET_CFLAGS="$TARGET_CFLAGS -mlong-calls"
fi
AC_CACHE_CHECK([whether option -mthumb-interwork works], grub_cv_cc_mthumb_interwork, [
CFLAGS="$TARGET_CFLAGS -mthumb-interwork -Werror"
AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[]], [[]])],
[grub_cv_cc_mthumb_interwork=yes],
[grub_cv_cc_mthumb_interwork=no])
])
if test "x$grub_cv_cc_mthumb_interwork" = xyes; then
TARGET_CFLAGS="$TARGET_CFLAGS -mthumb-interwork"
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
#