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gh-95855: Refactor platform triplet detection code, add detection for MIPS soft float and musl libc (#107221)
- Move platform triplet detection code into Misc/platform_triplet.c - Refactor MIPS detection, use defined(__mips64) to detect MIPS64 - Compute libc values in separate section - Add detection for MIPS soft float - Add detection for musl musl supports SPE with its soft-float ABI: https://git.musl-libc.org/cgit/musl/commit/?id=7be59733d71ada3a32a98622507399253f1d5e48 Original patch by Christian Heimes. Co-authored-by: Christian Heimes <christian@python.org> Co-authored-by: Erlend E. Aasland <erlend@python.org>
This commit is contained in:
Jeffery To
GitHub
parent
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commit
c163d7f0b6
4 changed files with 265 additions and 376 deletions
255
Misc/platform_triplet.c
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255
Misc/platform_triplet.c
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/* Detect platform triplet from builtin defines
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* cc -E Misc/platform_triplet.c | grep '^PLATFORM_TRIPLET=' | tr -d ' '
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*/
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#undef bfin
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#undef cris
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#undef fr30
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#undef linux
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#undef hppa
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#undef hpux
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#undef i386
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#undef mips
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#undef powerpc
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#undef sparc
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#undef unix
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#if defined(__ANDROID__)
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# Android is not a multiarch system.
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#elif defined(__linux__)
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/*
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* BEGIN of Linux block
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*/
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// Detect libc (based on config.guess)
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# include <features.h>
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# if defined(__UCLIBC__)
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# error uclibc not supported
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# elif defined(__dietlibc__)
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# error dietlibc not supported
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# elif defined(__GLIBC__)
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# define LIBC gnu
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# define LIBC_X32 gnux32
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# if defined(__ARM_PCS_VFP)
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# define LIBC_ARM gnueabihf
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# else
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# define LIBC_ARM gnueabi
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# endif
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# if defined(__loongarch__)
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# if defined(__loongarch_soft_float)
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# define LIBC_LA gnusf
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# elif defined(__loongarch_single_float)
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# define LIBC_LA gnuf32
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# elif defined(__loongarch_double_float)
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# define LIBC_LA gnu
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# else
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# error unknown loongarch floating-point base abi
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# endif
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# endif
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# if defined(_MIPS_SIM)
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# if defined(__mips_hard_float)
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# if _MIPS_SIM == _ABIO32
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# define LIBC_MIPS gnu
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# elif _MIPS_SIM == _ABIN32
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# define LIBC_MIPS gnuabin32
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# elif _MIPS_SIM == _ABI64
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# define LIBC_MIPS gnuabi64
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# else
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# error unknown mips sim value
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# endif
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# else
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# if _MIPS_SIM == _ABIO32
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# define LIBC_MIPS gnusf
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# elif _MIPS_SIM == _ABIN32
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# define LIBC_MIPS gnuabin32sf
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# elif _MIPS_SIM == _ABI64
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# define LIBC_MIPS gnuabi64sf
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# else
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# error unknown mips sim value
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# endif
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# endif
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# endif
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# if defined(__SPE__)
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# define LIBC_PPC gnuspe
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# else
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# define LIBC_PPC gnu
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# endif
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# else
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// Heuristic to detect musl libc
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# include <stdarg.h>
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# ifdef __DEFINED_va_list
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# define LIBC musl
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# define LIBC_X32 muslx32
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# if defined(__ARM_PCS_VFP)
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# define LIBC_ARM musleabihf
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# else
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# define LIBC_ARM musleabi
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# endif
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# if defined(__loongarch__)
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# if defined(__loongarch_soft_float)
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# define LIBC_LA muslsf
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# elif defined(__loongarch_single_float)
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# define LIBC_LA muslf32
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# elif defined(__loongarch_double_float)
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# define LIBC_LA musl
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# else
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# error unknown loongarch floating-point base abi
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# endif
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# endif
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# if defined(_MIPS_SIM)
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# if defined(__mips_hard_float)
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# if _MIPS_SIM == _ABIO32
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# define LIBC_MIPS musl
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# elif _MIPS_SIM == _ABIN32
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# define LIBC_MIPS musln32
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# elif _MIPS_SIM == _ABI64
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# define LIBC_MIPS musl
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# else
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# error unknown mips sim value
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# endif
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# else
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# if _MIPS_SIM == _ABIO32
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# define LIBC_MIPS muslsf
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# elif _MIPS_SIM == _ABIN32
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# define LIBC_MIPS musln32sf
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# elif _MIPS_SIM == _ABI64
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# define LIBC_MIPS muslsf
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# else
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# error unknown mips sim value
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# endif
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# endif
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# endif
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# if defined(_SOFT_FLOAT) || defined(__NO_FPRS__)
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# define LIBC_PPC muslsf
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# else
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# define LIBC_PPC musl
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# endif
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# else
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# error unknown libc
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# endif
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# endif
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# if defined(__x86_64__) && defined(__LP64__)
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PLATFORM_TRIPLET=x86_64-linux-LIBC
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# elif defined(__x86_64__) && defined(__ILP32__)
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PLATFORM_TRIPLET=x86_64-linux-LIBC_X32
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# elif defined(__i386__)
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PLATFORM_TRIPLET=i386-linux-LIBC
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# elif defined(__aarch64__) && defined(__AARCH64EL__)
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# if defined(__ILP32__)
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PLATFORM_TRIPLET=aarch64_ilp32-linux-LIBC
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# else
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PLATFORM_TRIPLET=aarch64-linux-LIBC
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# endif
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# elif defined(__aarch64__) && defined(__AARCH64EB__)
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# if defined(__ILP32__)
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PLATFORM_TRIPLET=aarch64_be_ilp32-linux-LIBC
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# else
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PLATFORM_TRIPLET=aarch64_be-linux-LIBC
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# endif
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# elif defined(__alpha__)
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PLATFORM_TRIPLET=alpha-linux-LIBC
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# elif defined(__ARM_EABI__)
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# if defined(__ARMEL__)
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PLATFORM_TRIPLET=arm-linux-LIBC_ARM
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# else
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PLATFORM_TRIPLET=armeb-linux-LIBC_ARM
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# endif
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# elif defined(__hppa__)
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PLATFORM_TRIPLET=hppa-linux-LIBC
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# elif defined(__ia64__)
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PLATFORM_TRIPLET=ia64-linux-LIBC
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# elif defined(__loongarch__) && defined(__loongarch_lp64)
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PLATFORM_TRIPLET=loongarch64-linux-LIBC_LA
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# elif defined(__m68k__) && !defined(__mcoldfire__)
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PLATFORM_TRIPLET=m68k-linux-LIBC
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# elif defined(__mips__)
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# if defined(__mips_isa_rev) && (__mips_isa_rev >=6)
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# if defined(_MIPSEL) && defined(__mips64)
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PLATFORM_TRIPLET=mipsisa64r6el-linux-LIBC_MIPS
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# elif defined(_MIPSEL)
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PLATFORM_TRIPLET=mipsisa32r6el-linux-LIBC_MIPS
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# elif defined(__mips64)
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PLATFORM_TRIPLET=mipsisa64r6-linux-LIBC_MIPS
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# else
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PLATFORM_TRIPLET=mipsisa32r6-linux-LIBC_MIPS
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# endif
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# else
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# if defined(_MIPSEL) && defined(__mips64)
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PLATFORM_TRIPLET=mips64el-linux-LIBC_MIPS
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# elif defined(_MIPSEL)
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PLATFORM_TRIPLET=mipsel-linux-LIBC_MIPS
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# elif defined(__mips64)
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PLATFORM_TRIPLET=mips64-linux-LIBC_MIPS
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# else
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PLATFORM_TRIPLET=mips-linux-LIBC_MIPS
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# endif
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# endif
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# elif defined(__or1k__)
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PLATFORM_TRIPLET=or1k-linux-LIBC
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# elif defined(__powerpc64__)
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# if defined(__LITTLE_ENDIAN__)
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PLATFORM_TRIPLET=powerpc64le-linux-LIBC
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# else
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PLATFORM_TRIPLET=powerpc64-linux-LIBC
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# endif
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# elif defined(__powerpc__)
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PLATFORM_TRIPLET=powerpc-linux-LIBC_PPC
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# elif defined(__s390x__)
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PLATFORM_TRIPLET=s390x-linux-LIBC
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# elif defined(__s390__)
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PLATFORM_TRIPLET=s390-linux-LIBC
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# elif defined(__sh__) && defined(__LITTLE_ENDIAN__)
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PLATFORM_TRIPLET=sh4-linux-LIBC
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# elif defined(__sparc__) && defined(__arch64__)
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PLATFORM_TRIPLET=sparc64-linux-LIBC
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# elif defined(__sparc__)
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PLATFORM_TRIPLET=sparc-linux-LIBC
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# elif defined(__riscv)
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# if __riscv_xlen == 32
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PLATFORM_TRIPLET=riscv32-linux-LIBC
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# elif __riscv_xlen == 64
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PLATFORM_TRIPLET=riscv64-linux-LIBC
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# else
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# error unknown platform triplet
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# endif
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# else
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# error unknown platform triplet
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# endif
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/*
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* END of Linux block
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*/
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#elif defined(__FreeBSD_kernel__)
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# if defined(__LP64__)
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PLATFORM_TRIPLET=x86_64-kfreebsd-gnu
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# elif defined(__i386__)
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PLATFORM_TRIPLET=i386-kfreebsd-gnu
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# else
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# error unknown platform triplet
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# endif
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#elif defined(__gnu_hurd__)
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PLATFORM_TRIPLET=i386-gnu
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#elif defined(__APPLE__)
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PLATFORM_TRIPLET=darwin
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#elif defined(__VXWORKS__)
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PLATFORM_TRIPLET=vxworks
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#elif defined(__wasm32__)
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# if defined(__EMSCRIPTEN__)
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PLATFORM_TRIPLET=wasm32-emscripten
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# elif defined(__wasi__)
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# if defined(_REENTRANT)
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PLATFORM_TRIPLET=wasm32-wasi-threads
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# else
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PLATFORM_TRIPLET=wasm32-wasi
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# endif
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# else
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# error unknown wasm32 platform
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# endif
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#elif defined(__wasm64__)
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# if defined(__EMSCRIPTEN__)
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PLATFORM_TRIPLET=wasm64-emscripten
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# elif defined(__wasi__)
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PLATFORM_TRIPLET=wasm64-wasi
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# else
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# error unknown wasm64 platform
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# endif
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#else
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# error unknown platform triplet
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#endif
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