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configure: Add --enable-clones for dynamic function multi-versioning.

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This commit is contained in:
Jason Volk 2023-03-03 20:39:17 -08:00
parent 44acc6a287
commit 4371380fe9
2 changed files with 29 additions and 0 deletions
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19
configure.ac
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@ -266,6 +266,24 @@ AC_ARG_ENABLE(optimize, RB_HELP_STRING([--enable-optimize], [Enable optimization
AM_CONDITIONAL([OPTIMIZE], [[[[ "$OPTIMIZE" = "1" ]]]]) AM_CONDITIONAL([OPTIMIZE], [[[[ "$OPTIMIZE" = "1" ]]]])
dnl
dnl Enable target clones code generation
dnl
AC_MSG_CHECKING(whether to generate code for target clones)
AC_ARG_ENABLE(clones, RB_HELP_STRING([--enable-clones], [Enable target clones generation]),
[
AC_MSG_RESULT([yes])
AC_SUBST(CLONES, 1)
RB_DEFINE([CLONES], [1], [Function multi-versioning for different architectures])
clones="yes"
], [
AC_MSG_RESULT([no])
clones="no"
])
AM_CONDITIONAL([CLONES], [[[[ "$CLONES" = "1" ]]]])
dnl dnl
dnl Explicit link-time-optimization switch dnl Explicit link-time-optimization switch
dnl dnl
@ -3154,6 +3172,7 @@ echo "Linker flags (LDFLAGS) ............ $LDFLAGS"
echo echo
echo "Developer platform (build) ........ $build_cpu $build_vendor $build_os" echo "Developer platform (build) ........ $build_cpu $build_vendor $build_os"
echo "Target platform (host) ............ $host_cpu $host_vendor $host_os" echo "Target platform (host) ............ $host_cpu $host_vendor $host_os"
echo "Target clones ..................... $clones"
echo "Target features ................... $machine_tuning $machine_features" echo "Target features ................... $machine_tuning $machine_features"
echo echo
echo "Precompile headers ................ $build_pch" echo "Precompile headers ................ $build_pch"

10
include/ircd/portable.h
View file

@ -81,6 +81,16 @@
#endif #endif
#endif #endif
//
// Target clones
//
#ifdef RB_CLONES
#define IRCD_CLONES(features) gnu::target_clones(features)
#else
#define IRCD_CLONES(features)
#endif
// //
// 128 bit integer support // 128 bit integer support
// //