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-rw-r--r--sysdeps/x86_64/configure.ac18
1 files changed, 18 insertions, 0 deletions
diff --git a/sysdeps/x86_64/configure.ac b/sysdeps/x86_64/configure.ac
index c714c47351..c7b68544a2 100644
--- a/sysdeps/x86_64/configure.ac
+++ b/sysdeps/x86_64/configure.ac
@@ -76,5 +76,23 @@ EOF
 	       rm -rf conftest*])
 LIBC_CONFIG_VAR([have-mamx-tile], [$libc_cv_x86_have_amx_tile])
 
+# Check if -mapxf is enabled.
+AC_CACHE_CHECK(whether -mapxf is enabled,
+	       libc_cv_x86_have_apx, [dnl
+cat > conftest.c <<EOF
+#ifndef __APX_F__
+# error APX isn't enabled
+#endif
+EOF
+	       libc_cv_x86_have_apx=no
+	       if AC_TRY_COMMAND(${CC-cc} -c $CFLAGS conftest.c -o conftest.o 1>&AS_MESSAGE_LOG_FD); then
+		   libc_cv_x86_have_apx=yes
+	       fi
+	       rm -rf conftest*])
+if test $libc_cv_x86_have_apx = yes; then
+  AC_DEFINE(HAVE_X86_APX)
+fi
+LIBC_CONFIG_VAR([have-x86-apx], [$libc_cv_x86_have_apx])
+
 test -n "$critic_missing" && AC_MSG_ERROR([
 *** $critic_missing])