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add support for more ABIs in litecross + update target list in README #226

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febb20e
litecross: support more target ABIs
alexrp Mar 8, 2026
f25a9f2
README: update target list
alexrp Mar 8, 2026
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18 changes: 13 additions & 5 deletions README.md
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Original file line number Diff line number Diff line change
Expand Up @@ -48,15 +48,23 @@ The following is a non-exhaustive list of `$(TARGET)` tuples that are
believed to work:

- `aarch64[_be]-linux-musl`
- `arm[eb]-linux-musleabi[hf]`
- `arm-linux-musleabi[hf]`
- `armeb-linux-musleabi[hf][be8]`
- `i*86-linux-musl`
- `loongarch64-linux-musl[sf]`
- `m68k-linux-musl`
- `microblaze[el]-linux-musl`
- `mips-linux-musl`
- `mips[el]-linux-musl[sf]`
- `mips64[el]-linux-musl[n32][sf]`
- `mips[isa32][el]-linux-musl[sf]`
- `mipsisa32r2[el]-linux-musl[nan2008][sf]`
- `mipsisa32r6[el]-linux-musl[sf]`
- `mips[isa]64[el]-linux-musl[n32][sf]`
- `mipsisa64r2[el]-linux-musl[n32][nan2008][sf]`
- `mipsisa64r6[el]-linux-musl[n32][sf]`
Comment on lines -54 to +62

@alexrp alexrp Mar 9, 2026

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I imagine this will be confusing, so to clarify:

  • MIPS r2 added optional support for nan2008.
  • MIPS r6 made nan2008 mandatory.
  • Earlier MIPS versions only supported the legacy format.

I'm also listing the r6 targets on their own since r6 is effectively a distinct ISA due to instruction encoding changes.

- `or1k-linux-musl`
- `powerpc-linux-musl[sf]`
- `powerpc64[le]-linux-musl`
- `riscv64-linux-musl`
- `riscv32-linux-musl[f32|sf]`
- `riscv64-linux-musl[f32|sf]`
- `s390x-linux-musl`
- `sh*[eb]-linux-musl[fdpic][sf]`
- `x86_64-linux-musl[x32]`
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28 changes: 28 additions & 0 deletions litecross/Makefile
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Expand Up @@ -27,6 +27,10 @@ ifneq ($(findstring powerpc64,$(TARGET)),)
GCC_CONFIG_FOR_TARGET += --with-abi=elfv2
endif

ifneq ($(findstring nan2008,$(TARGET)),)
GCC_CONFIG_FOR_TARGET += --with-nan=2008
endif

ifneq ($(findstring mips64,$(TARGET))$(findstring mipsisa64,$(TARGET)),)
ifneq ($(findstring n32,$(TARGET)),)
GCC_CONFIG_FOR_TARGET += --with-abi=n32
Expand All @@ -40,13 +44,37 @@ GCC_CONFIG_FOR_TARGET += --with-long-double-128
endif

ifneq ($(filter %sf,$(TARGET)),)
ifeq ($(findstring loongarch,$(TARGET)),)
ifeq ($(findstring riscv,$(TARGET)),)
GCC_CONFIG_FOR_TARGET += --with-float=soft
endif
endif
endif
Comment on lines 46 to +52

@alexrp alexrp Mar 9, 2026

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GCC does not accept --with-float=... for LoongArch and RISC-V, which is why we need --with-abi=... stuff below.


ifneq ($(filter %hf,$(TARGET)),)
GCC_CONFIG_FOR_TARGET += --with-float=hard
endif

ifneq ($(filter armeb%be8,$(TARGET)),)
GCC_CONFIG_FOR_TARGET += --with-arch=armv7-a
endif

ifneq ($(filter riscv32%f32,$(TARGET)),)
GCC_CONFIG_FOR_TARGET += --with-arch=rv32imafc_zicsr_zifencei --with-abi=ilp32f
endif

ifneq ($(filter riscv32%sf,$(TARGET)),)
GCC_CONFIG_FOR_TARGET += --with-arch=rv32imac_zicsr_zifencei --with-abi=ilp32
endif

ifneq ($(filter riscv64%f32,$(TARGET)),)
GCC_CONFIG_FOR_TARGET += --with-arch=rv64imafc_zicsr_zifencei --with-abi=lp64f
endif

ifneq ($(filter riscv64%sf,$(TARGET)),)
GCC_CONFIG_FOR_TARGET += --with-arch=rv64imac_zicsr_zifencei --with-abi=lp64
endif
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ifneq ($(LIBTOOL),)
LIBTOOL_ARG = LIBTOOL=$(LIBTOOL)
endif
Expand Down