1# Copyright (C) 1998-2020 Free Software Foundation, Inc. 2# 3# This file is part of GCC. 4# 5# GCC is free software; you can redistribute it and/or modify 6# it under the terms of the GNU General Public License as published by 7# the Free Software Foundation; either version 3, or (at your option) 8# any later version. 9# 10# GCC is distributed in the hope that it will be useful, 11# but WITHOUT ANY WARRANTY; without even the implied warranty of 12# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 13# GNU General Public License for more details. 14# 15# You should have received a copy of the GNU General Public License 16# along with GCC; see the file COPYING3. If not see 17# <http://www.gnu.org/licenses/>. 18 19# Build a very basic set of libraries that should cater for most cases. 20 21# Single-precision floating-point is NOT supported; we don't build a 22# suitable library for that. Use the rm-profile config in that case. 23 24# PART 1 - Useful groups of options 25 26dp_fpus := vfp vfpv2 vfpv3 vfpv3-fp16 vfpv3-d16 vfpv3-d16-fp16 \ 27 neon neon-vfpv3 neon-fp16 vfpv4 neon-vfpv4 vfpv4-d16 \ 28 fpv5-d16 fp-armv8 neon-fp-armv8 crypto-neon-fp-armv8 \ 29 vfp3 30 31sp_fpus := vfpv3xd vfpv3xd-fp16 fpv4-sp-d16 fpv5-sp-d16 32 33v7a_fps := vfpv3 vfpv3-fp16 vfpv4 simd neon-fp16 neon-vfpv4 34v7ve_fps := vfpv3-d16 vfpv3 vfpv3-d16-fp16 vfpv3-fp16 vfpv4 neon \ 35 neon-fp16 simd 36 37# Not all these permutations exist for all architecture variants, but 38# it seems to work ok. 39v8_fps := simd fp16 crypto fp16+crypto dotprod fp16fml 40 41# We don't do anything special with these. Pre-v4t probably doesn't work. 42all_early_nofp := armv4 armv4t armv5t 43 44all_early_arch := armv5tej armv6 armv6j armv6k armv6z armv6kz \ 45 armv6zk armv6t2 iwmmxt iwmmxt2 46 47all_v7_a_r := armv7-a armv7ve armv7-r 48 49all_v8_archs := armv8-a armv8-a+crc armv8.1-a armv8.2-a armv8.3-a armv8.4-a \ 50 armv8.5-a armv8.6-a 51 52# No floating point variants, require thumb1 softfp 53all_nofp_t := armv6-m armv6s-m armv8-m.base 54 55all_nofp_t2 := armv7-m 56 57all_sp_only := armv7e-m armv8-m.main 58 59MULTILIB_OPTIONS = 60MULTILIB_DIRNAMES = 61MULTILIB_EXCEPTIONS = 62MULTILIB_MATCHES = 63MULTILIB_REUSE = 64 65# PART 2 - multilib build rules 66 67MULTILIB_OPTIONS += marm/mthumb 68MULTILIB_DIRNAMES += arm thumb 69 70MULTILIB_OPTIONS += mfpu=auto 71MULTILIB_DIRNAMES += autofp 72 73MULTILIB_OPTIONS += march=armv5te+fp/march=armv7+fp 74MULTILIB_DIRNAMES += v5te v7 75 76MULTILIB_OPTIONS += mfloat-abi=hard 77MULTILIB_DIRNAMES += fpu 78 79# Build a total of 4 library variants (base options plus the following): 80MULTILIB_REQUIRED += mthumb 81MULTILIB_REQUIRED += marm/mfpu=auto/march=armv5te+fp/mfloat-abi=hard 82MULTILIB_REQUIRED += mthumb/mfpu=auto/march=armv7+fp/mfloat-abi=hard 83 84# PART 3 - Match rules 85 86# Map all supported FPUs onto mfpu=auto 87MULTILIB_MATCHES += $(foreach FPU, $(dp_fpus), \ 88 mfpu?auto=mfpu?$(FPU)) 89 90MULTILIB_MATCHES += march?armv5te+fp=march?armv5te 91 92MULTILIB_MATCHES += $(foreach ARCH, $(all_early_arch), \ 93 march?armv5te+fp=march?$(ARCH) \ 94 march?armv5te+fp=march?$(ARCH)+fp) 95 96MULTILIB_MATCHES += march?armv7+fp=march?armv7 97 98MULTILIB_MATCHES += $(foreach FPARCH, $(v7a_fps), \ 99 march?armv7+fp=march?armv7-a+$(FPARCH)) 100 101MULTILIB_MATCHES += $(foreach FPARCH, $(v7ve_fps), \ 102 march?armv7+fp=march?armv7ve+$(FPARCH)) 103 104MULTILIB_MATCHES += $(foreach ARCH, $(all_v7_a_r), \ 105 march?armv7+fp=march?$(ARCH) \ 106 march?armv7+fp=march?$(ARCH)+fp) 107 108MULTILIB_MATCHES += $(foreach ARCH, $(all_v8_archs), \ 109 march?armv7+fp=march?$(ARCH) \ 110 $(foreach FPARCH, $(v8_fps), \ 111 march?armv7+fp=march?$(ARCH)+$(FPARCH))) 112 113MULTILIB_MATCHES += $(foreach ARCH, armv7e-m armv8-m.mainline, \ 114 march?armv7+fp=march?$(ARCH)+fp.dp) 115 116# PART 4 - Reuse rules 117 118MULTILIB_REUSE += mthumb=mthumb/mfpu.auto 119MULTILIB_REUSE += mthumb=mthumb/mfpu.auto/march.armv5te+fp 120MULTILIB_REUSE += mthumb=mthumb/march.armv5te+fp 121MULTILIB_REUSE += marm/mfpu.auto/march.armv5te+fp/mfloat-abi.hard=marm/march.armv5te+fp/mfloat-abi.hard 122MULTILIB_REUSE += marm/mfpu.auto/march.armv5te+fp/mfloat-abi.hard=march.armv5te+fp/mfloat-abi.hard 123MULTILIB_REUSE += marm/mfpu.auto/march.armv5te+fp/mfloat-abi.hard=mfpu.auto/march.armv5te+fp/mfloat-abi.hard 124MULTILIB_REUSE += mthumb/mfpu.auto/march.armv7+fp/mfloat-abi.hard=mthumb/march.armv7+fp/mfloat-abi.hard 125MULTILIB_REUSE += mthumb/mfpu.auto/march.armv7+fp/mfloat-abi.hard=mfpu.auto/march.armv7+fp/mfloat-abi.hard 126MULTILIB_REUSE += mthumb/mfpu.auto/march.armv7+fp/mfloat-abi.hard=march.armv7+fp/mfloat-abi.hard 127