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| -rw-r--r-- | configure.ac | 27 |
1 files changed, 27 insertions, 0 deletions
diff --git a/configure.ac b/configure.ac index 672a6dff..1dd5930e 100644 --- a/configure.ac +++ b/configure.ac @@ -242,6 +242,33 @@ else AM_CONDITIONAL(HAVE_SSE4_1, false) fi +dnl Check if the compiler supports specified GCC's built-in function +AC_DEFUN([CHECK_BUILTIN_SUPPORT], [ + AC_CACHE_CHECK( + [whether ${CC} has $1 built-in], + [osmo_cv_cc_has_builtin], [ + AC_LINK_IFELSE([ + AC_LANG_PROGRAM([], [ + __builtin_cpu_supports("sse"); + ]) + ], + [AS_VAR_SET([osmo_cv_cc_has_builtin], [yes])], + [AS_VAR_SET([osmo_cv_cc_has_builtin], [no])]) + ] + ) + + AS_IF([test yes = AS_VAR_GET([osmo_cv_cc_has_builtin])], [ + AC_DEFINE_UNQUOTED(AS_TR_CPP(HAVE_$1), 1, + [Define to 1 if compiler has the '$1' built-in function]) + ], [ + AC_MSG_WARN($2) + ]) +]) + +dnl Check if the compiler supports runtime SIMD detection +CHECK_BUILTIN_SUPPORT([__builtin_cpu_supports], + [Runtime SIMD detection will be disabled]) + AC_OUTPUT( libosmocore.pc libosmocodec.pc |