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configure: Add -fno-unwind-tables if supported. 

Unwind tables are useless for us bt consume space if present. Ensure that they
are not.
This commit is contained in:
Vladimir Serbinenko 2015-12-31 19:20:03 +01:00
parent dcc499aaf0
commit 40051fedc3
1 changed files with 11 additions and 0 deletions
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11
configure.ac
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@ -937,6 +937,17 @@ if test "x$grub_cv_cc_fno_asynchronous_unwind_tables" = xyes; then
TARGET_CFLAGS="$TARGET_CFLAGS -fno-asynchronous-unwind-tables"
fi
AC_CACHE_CHECK([whether -fno-unwind-tables works], [grub_cv_cc_fno_unwind_tables], [
CFLAGS="$TARGET_CFLAGS -fno-unwind-tables"
AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[]], [[]])],
[grub_cv_cc_fno_unwind_tables=yes],
[grub_cv_cc_fno_unwind_tables=no])
])
if test "x$grub_cv_cc_fno_unwind_tables" = xyes; then
TARGET_CFLAGS="$TARGET_CFLAGS -fno-unwind-tables"
fi
AC_ARG_ENABLE([efiemu],
[AS_HELP_STRING([--enable-efiemu],
[build and install the efiemu runtimes (default=guessed)])])