On the LoongArch64 CPU, GCC and clang predefine only __loongarch__,
__loongarch64. GCC predefines also __loongarch_lp64. But it's too hard
to remember that __loongarch64__ is not defined. So, let host-cpu-c-abi
define it.
Btw, this is independent of the floating-point variants of the ABI:
-mabi=lp64d (the default) defines
#define __loongarch_hard_float 1
#define __loongarch_double_float 1
-mabi=lp64f defines
#define __loongarch_hard_float 1
#define __loongarch_single_float 1
-mabi=lp64s defines
#define __loongarch_soft_float 1
2022-01-09 Bruno Haible <br...@clisp.org>
host-cpu-c-abi: Add support for LoongArch64 CPU.
* m4/host-cpu-c-abi.m4 (gl_HOST_CPU_C_ABI): Define __loongarch64__. (GCC
and clang predefine only __loongarch__, __loongarch64.)
diff --git a/m4/host-cpu-c-abi.m4 b/m4/host-cpu-c-abi.m4
index 6d1e4578c7..b9223241b4 100644
--- a/m4/host-cpu-c-abi.m4
+++ b/m4/host-cpu-c-abi.m4
@@ -1,4 +1,4 @@
-# host-cpu-c-abi.m4 serial 14
+# host-cpu-c-abi.m4 serial 15
dnl Copyright (C) 2002-2022 Free Software Foundation, Inc.
dnl This file is free software; the Free Software Foundation
dnl gives unlimited permission to copy and/or distribute it,
@@ -382,6 +382,9 @@ EOF
#ifndef __ia64__
#undef __ia64__
#endif
+#ifndef __loongarch64__
+#undef __loongarch64__
+#endif
#ifndef __m68k__
#undef __m68k__
#endif
