| # Copyright (C) 1998-2021 Free Software Foundation, Inc. |
| # |
| # This file is part of GCC. |
| # |
| # GCC is free software; you can redistribute it and/or modify |
| # it under the terms of the GNU General Public License as published by |
| # the Free Software Foundation; either version 3, or (at your option) |
| # any later version. |
| # |
| # GCC is distributed in the hope that it will be useful, |
| # but WITHOUT ANY WARRANTY; without even the implied warranty of |
| # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| # GNU General Public License for more details. |
| # |
| # You should have received a copy of the GNU General Public License |
| # along with GCC; see the file COPYING3. If not see |
| # <http://www.gnu.org/licenses/>. |
| |
| # Build a very basic set of libraries that should cater for most cases. |
| |
| # Single-precision floating-point is NOT supported; we don't build a |
| # suitable library for that. Use the rm-profile config in that case. |
| |
| # PART 1 - Useful groups of options |
| |
| dp_fpus := vfp vfpv2 vfpv3 vfpv3-fp16 vfpv3-d16 vfpv3-d16-fp16 \ |
| neon neon-vfpv3 neon-fp16 vfpv4 neon-vfpv4 vfpv4-d16 \ |
| fpv5-d16 fp-armv8 neon-fp-armv8 crypto-neon-fp-armv8 \ |
| vfp3 |
| |
| sp_fpus := vfpv3xd vfpv3xd-fp16 fpv4-sp-d16 fpv5-sp-d16 |
| |
| v7a_fps := vfpv3 vfpv3-fp16 vfpv4 simd neon-fp16 neon-vfpv4 |
| v7ve_fps := vfpv3-d16 vfpv3 vfpv3-d16-fp16 vfpv3-fp16 vfpv4 neon \ |
| neon-fp16 simd |
| |
| # Not all these permutations exist for all architecture variants, but |
| # it seems to work ok. |
| v8_fps := simd fp16 crypto fp16+crypto dotprod fp16fml |
| |
| # We don't do anything special with these. Pre-v4t probably doesn't work. |
| all_early_nofp := armv4 armv4t armv5t |
| |
| all_early_arch := armv5tej armv6 armv6j armv6k armv6z armv6kz \ |
| armv6zk armv6t2 iwmmxt iwmmxt2 |
| |
| all_v7_a_r := armv7-a armv7ve armv7-r |
| |
| all_v8_archs := armv8-a armv8-a+crc armv8.1-a armv8.2-a armv8.3-a armv8.4-a \ |
| armv8.5-a armv8.6-a |
| |
| # No floating point variants, require thumb1 softfp |
| all_nofp_t := armv6-m armv6s-m armv8-m.base |
| |
| all_nofp_t2 := armv7-m |
| |
| all_sp_only := armv7e-m armv8-m.main |
| |
| MULTILIB_OPTIONS = |
| MULTILIB_DIRNAMES = |
| MULTILIB_EXCEPTIONS = |
| MULTILIB_MATCHES = |
| MULTILIB_REUSE = |
| |
| # PART 2 - multilib build rules |
| |
| MULTILIB_OPTIONS += marm/mthumb |
| MULTILIB_DIRNAMES += arm thumb |
| |
| MULTILIB_OPTIONS += mfpu=auto |
| MULTILIB_DIRNAMES += autofp |
| |
| MULTILIB_OPTIONS += march=armv5te+fp/march=armv7+fp |
| MULTILIB_DIRNAMES += v5te v7 |
| |
| MULTILIB_OPTIONS += mfloat-abi=hard |
| MULTILIB_DIRNAMES += fpu |
| |
| # Build a total of 4 library variants (base options plus the following): |
| MULTILIB_REQUIRED += mthumb |
| MULTILIB_REQUIRED += marm/mfpu=auto/march=armv5te+fp/mfloat-abi=hard |
| MULTILIB_REQUIRED += mthumb/mfpu=auto/march=armv7+fp/mfloat-abi=hard |
| |
| # PART 3 - Match rules |
| |
| # Map all supported FPUs onto mfpu=auto |
| MULTILIB_MATCHES += $(foreach FPU, $(dp_fpus), \ |
| mfpu?auto=mfpu?$(FPU)) |
| |
| MULTILIB_MATCHES += march?armv5te+fp=march?armv5te |
| |
| MULTILIB_MATCHES += $(foreach ARCH, $(all_early_arch), \ |
| march?armv5te+fp=march?$(ARCH) \ |
| march?armv5te+fp=march?$(ARCH)+fp) |
| |
| MULTILIB_MATCHES += march?armv7+fp=march?armv7 |
| |
| MULTILIB_MATCHES += $(foreach FPARCH, $(v7a_fps), \ |
| march?armv7+fp=march?armv7-a+$(FPARCH)) |
| |
| MULTILIB_MATCHES += $(foreach FPARCH, $(v7ve_fps), \ |
| march?armv7+fp=march?armv7ve+$(FPARCH)) |
| |
| MULTILIB_MATCHES += $(foreach ARCH, $(all_v7_a_r), \ |
| march?armv7+fp=march?$(ARCH) \ |
| march?armv7+fp=march?$(ARCH)+fp) |
| |
| MULTILIB_MATCHES += $(foreach ARCH, $(all_v8_archs), \ |
| march?armv7+fp=march?$(ARCH) \ |
| $(foreach FPARCH, $(v8_fps), \ |
| march?armv7+fp=march?$(ARCH)+$(FPARCH))) |
| |
| MULTILIB_MATCHES += $(foreach ARCH, armv7e-m armv8-m.mainline, \ |
| march?armv7+fp=march?$(ARCH)+fp.dp) |
| |
| # PART 4 - Reuse rules |
| |
| MULTILIB_REUSE += mthumb=mthumb/mfpu.auto |
| MULTILIB_REUSE += mthumb=mthumb/mfpu.auto/march.armv5te+fp |
| MULTILIB_REUSE += mthumb=mthumb/march.armv5te+fp |
| MULTILIB_REUSE += marm/mfpu.auto/march.armv5te+fp/mfloat-abi.hard=marm/march.armv5te+fp/mfloat-abi.hard |
| MULTILIB_REUSE += marm/mfpu.auto/march.armv5te+fp/mfloat-abi.hard=march.armv5te+fp/mfloat-abi.hard |
| MULTILIB_REUSE += marm/mfpu.auto/march.armv5te+fp/mfloat-abi.hard=mfpu.auto/march.armv5te+fp/mfloat-abi.hard |
| MULTILIB_REUSE += mthumb/mfpu.auto/march.armv7+fp/mfloat-abi.hard=mthumb/march.armv7+fp/mfloat-abi.hard |
| MULTILIB_REUSE += mthumb/mfpu.auto/march.armv7+fp/mfloat-abi.hard=mfpu.auto/march.armv7+fp/mfloat-abi.hard |
| MULTILIB_REUSE += mthumb/mfpu.auto/march.armv7+fp/mfloat-abi.hard=march.armv7+fp/mfloat-abi.hard |