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# FP_CC_SUPPORTS_TARGET
# ---------------------
# Does CC support the --target=<triple> option? If so, we should pass it
# whenever possible to avoid ambiguity and potential compile-time errors (e.g.
# see #20162).
#
# The primary effect of this is updating CONF_CC_OPTS_STAGE[12] to
# explicitly ask the compiler to generate code for the $TargetPlatform.
AC_DEFUN([FP_CC_SUPPORTS_TARGET],
[
AC_REQUIRE([AC_PROG_CC])
AC_REQUIRE([GHC_LLVM_TARGET_SET_VAR])
AC_MSG_CHECKING([whether $1 CC supports --target])
echo 'int main() { return 0; }' > conftest.c
if $CC --target=$LlvmTarget -Werror conftest.c >& /dev/null ; then
CONF_CC_SUPPORTS_TARGET=YES
AC_MSG_RESULT([yes])
else
CONF_CC_SUPPORTS_TARGET=NO
AC_MSG_RESULT([no])
fi
rm -f conftest.c conftest
if test $CONF_CC_SUPPORTS_TARGET = YES ; then
CONF_CC_OPTS_STAGE1="--target=$LlvmTarget $CONF_CC_OPTS_STAGE1"
CONF_CC_OPTS_STAGE2="--target=$LlvmTarget $CONF_CC_OPTS_STAGE2"
CONF_CXX_OPTS_STAGE1="--target=$LlvmTarget $CONF_CXX_OPTS_STAGE1"
CONF_CXX_OPTS_STAGE2="--target=$LlvmTarget $CONF_CXX_OPTS_STAGE2"
CONF_GCC_LINKER_OPTS_STAGE1="--target=$LlvmTarget $CONF_GCC_LINKER_OPTS_STAGE1"
CONF_GCC_LINKER_OPTS_STAGE2="--target=$LlvmTarget $CONF_GCC_LINKER_OPTS_STAGE2"
fi
])
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