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# Copyright (C) 1998-2023 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
v9_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
all_v9_archs := armv9-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, $(all_v9_archs), \
march?armv7+fp=march?$(ARCH) \
$(foreach FPARCH, $(v9_fps), \
march?armv7+fp=march?$(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
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