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Not all architectures support -march=native, make it configurable and disable it when necessary.

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bit4 2016-02-06 10:32:29 -05:00
parent 9be7c822f7
commit 2e0657f4c6
1 changed files with 14 additions and 2 deletions
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16
configure.ac
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@ -40,7 +40,7 @@ dnl LT_INIT
AC_ARG_ENABLE(fat,
AC_HELP_STRING([--enable-fat],
[build a fat binary on systems that support it [[default=no]]]),
[build a fat binary on systems that support it [default=no]]),
[case $enableval in
yes|no) ;;
*) AC_MSG_ERROR([bad value $enableval for --enable-fat, need yes or no]) ;;
@ -48,7 +48,19 @@ AC_HELP_STRING([--enable-fat],
[enable_fat=no]
)
AC_ARG_ENABLE(native,
AC_HELP_STRING([--enable-native],
[build a binary optimized for the CPU found at compile time on systems that support it [default=yes]]),
[case $enableval in
yes|no) ;;
*) AC_MSG_ERROR([bad value $enableval for --enable-native, need yes or no]) ;;
esac],
[enable_native=yes]
)
AX_CHECK_COMPILE_FLAG([-O3], [CFLAGS=-O3])
dnl Not all architectures support -march=native
AX_CHECK_COMPILE_FLAG([-march=native], [], [enable_native=no])
if test $enable_fat == "yes"; then
dnl Fat build needs compiler who knows all the possible instruction sets
@ -57,7 +69,7 @@ if test $enable_fat == "yes"; then
AX_CHECK_COMPILE_FLAG([-msse4.1], [], AC_MSG_ERROR([Compiler does not know -msse4.1.]))
AX_CHECK_COMPILE_FLAG([-mavx], [], AC_MSG_ERROR([Compiler does not know -mavx.]))
AX_CHECK_COMPILE_FLAG([-mxop], [], AC_MSG_ERROR([Compiler does not know -mxop.]))
else
elif test $enable_native == "yes"; then
AX_EXT
CFLAGS="${CFLAGS} -march=native ${SIMD_FLAGS}"
fi